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    SAMSON with hybrid graphics cards (Intel/Nvidia)

    Getting started
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    • DmitriyMarin
      DmitriyMarin last edited by DmitriyMarin

      Thank you @Ivan for reporting this issue!

      It might be a problem specific to optirun or to OpenGL. Do you have libGL installed via nvidia drivers or mesa-utils?

      Could you, please, check dependencies for SAMSON-Core:

      cd ~/NANO-D/SAMSON/0.7.0/Binaries
      ldd ./SAMSON-Core | grep gl
      ldd ./SAMSON-Core | grep GL
      

      In particular, is libGL.so.1 the correct one?

      And could you, please, run and post the output for

      optirun glxinfo | grep OpenGL
      

      Dmitriy,
      The SAMSON Team, https://s-c.io

      Ivan 1 Reply Last reply Reply Quote 0
      • Ivan
        Ivan @DmitriyMarin last edited by

        @dmitriymarin

        dia@lenovo:~/NANO-D/SAMSON/0.7.0/Binaries$ ldd ./SAMSON-Core | grep gl
        	libglib-2.0.so.0 => /lib/x86_64-linux-gnu/libglib-2.0.so.0 (0x00007fa0eba45000)
        dia@lenovo:~/NANO-D/SAMSON/0.7.0/Binaries$ ldd ./SAMSON-Core | grep GL
        	libOpenGL.so.0 => /usr/lib/x86_64-linux-gnu/libOpenGL.so.0 (0x00007fdd14161000)
        	libGLX.so.0 => /usr/lib/x86_64-linux-gnu/libGLX.so.0 (0x00007fdd13f2f000)
        	libGLU.so.1 => /usr/lib/x86_64-linux-gnu/libGLU.so.1 (0x00007fdd13cc0000)
        	libSBGLog.so => not found
        	libQt5OpenGL.so.5 => /usr/lib/x86_64-linux-gnu/libQt5OpenGL.so.5 (0x00007fdd13c66000)
        	libGLdispatch.so.0 => /usr/lib/x86_64-linux-gnu/libGLdispatch.so.0 (0x00007fdd121e6000)
        	libGL.so.1 => /usr/lib/x86_64-linux-gnu/libGL.so.1 (0x00007fdd117e4000)
        dia@lenovo:~/NANO-D/SAMSON/0.7.0/Binaries$ optirun glxinfo | grep OpenGL
        OpenGL vendor string: NVIDIA Corporation
        OpenGL renderer string: GeForce GTX 1050/PCIe/SSE2
        OpenGL core profile version string: 4.5.0 NVIDIA 390.87
        OpenGL core profile shading language version string: 4.50 NVIDIA
        OpenGL core profile context flags: (none)
        OpenGL core profile profile mask: core profile
        OpenGL core profile extensions:
        OpenGL version string: 4.6.0 NVIDIA 390.87
        OpenGL shading language version string: 4.60 NVIDIA
        OpenGL context flags: (none)
        OpenGL profile mask: (none)
        OpenGL extensions:
        
        dia@lenovo:~/NANO-D/SAMSON/0.7.0/Binaries$ optirun ldd ./SAMSON-Core | grep gl
        	libglib-2.0.so.0 => /lib/x86_64-linux-gnu/libglib-2.0.so.0 (0x00007f21ab7ff000)
        dia@lenovo:~/NANO-D/SAMSON/0.7.0/Binaries$ optirun ldd ./SAMSON-Core | grep GL
        	libOpenGL.so.0 => /usr/lib/x86_64-linux-gnu/libOpenGL.so.0 (0x00007f440f894000)
        	libGLX.so.0 => /usr/lib/x86_64-linux-gnu/libGLX.so.0 (0x00007f440f662000)
        	libGLU.so.1 => /usr/lib/x86_64-linux-gnu/libGLU.so.1 (0x00007f440f3f3000)
        	libSBGLog.so => not found
        	libQt5OpenGL.so.5 => /usr/lib/x86_64-linux-gnu/libQt5OpenGL.so.5 (0x00007f440f399000)
        	libGLdispatch.so.0 => /usr/lib/x86_64-linux-gnu/libGLdispatch.so.0 (0x00007f440d915000)
        	libGL.so.1 => /usr/lib/x86_64-linux-gnu/primus/libGL.so.1 (0x00007f440cf62000)
        
        

        about libGL version. I can provide synaptic screenshot.
        0_1551425844873_2019-03-01_14-37-01.png

        1 Reply Last reply Reply Quote 0
        • DmitriyMarin
          DmitriyMarin last edited by DmitriyMarin

          @Ivan
          Unfortunately, I do not have a laptop with linux and an Nvidia Optimus GPU now.

          Do you have the Nouveau driver blacklisted or uninstalled? Because it causes some issues on Nvidia Optimus GPUs.
          Does optimus/bumblebee work for you in other apps? What happens if you, for example, execute in the terminal:

          optirun glxgears
          

          Does primusrun work for you? optirun relies on VirtualGL which might cause the issue you have.

          Dmitriy,
          The SAMSON Team, https://s-c.io

          Ivan 1 Reply Last reply Reply Quote 0
          • Ivan
            Ivan last edited by

            optirun glxgears works fine, I am intensively using VMD software with Nvidia. primusrun also runs well.

            I add --logconsole flag in the start script.

            Can this information help?

            dia@lenovo:~/NANO-D/SAMSON/0.7.0/Binaries$ ./SAMSON-Core.sh 
            saving context
            launching SAMSON-Core
            Python found in the system: 
            Python executable:    /usr/bin/python3
            qt.network.ssl: QSslSocket: cannot resolve CRYPTO_num_locks
            qt.network.ssl: QSslSocket: cannot resolve CRYPTO_set_id_callback
            qt.network.ssl: QSslSocket: cannot resolve CRYPTO_set_locking_callback
            qt.network.ssl: QSslSocket: cannot resolve ERR_free_strings
            qt.network.ssl: QSslSocket: cannot resolve EVP_CIPHER_CTX_cleanup
            qt.network.ssl: QSslSocket: cannot resolve EVP_CIPHER_CTX_init
            qt.network.ssl: QSslSocket: cannot resolve sk_new_null
            qt.network.ssl: QSslSocket: cannot resolve sk_push
            qt.network.ssl: QSslSocket: cannot resolve sk_free
            qt.network.ssl: QSslSocket: cannot resolve sk_num
            qt.network.ssl: QSslSocket: cannot resolve sk_pop_free
            qt.network.ssl: QSslSocket: cannot resolve sk_value
            qt.network.ssl: QSslSocket: cannot resolve SSL_library_init
            qt.network.ssl: QSslSocket: cannot resolve SSL_load_error_strings
            qt.network.ssl: QSslSocket: cannot resolve SSL_get_ex_new_index
            qt.network.ssl: QSslSocket: cannot resolve SSLv3_client_method
            qt.network.ssl: QSslSocket: cannot resolve SSLv23_client_method
            qt.network.ssl: QSslSocket: cannot resolve SSLv3_server_method
            qt.network.ssl: QSslSocket: cannot resolve SSLv23_server_method
            qt.network.ssl: QSslSocket: cannot resolve X509_STORE_CTX_get_chain
            qt.network.ssl: QSslSocket: cannot resolve OPENSSL_add_all_algorithms_noconf
            qt.network.ssl: QSslSocket: cannot resolve OPENSSL_add_all_algorithms_conf
            qt.network.ssl: QSslSocket: cannot resolve SSLeay
            qt.network.ssl: QSslSocket: cannot resolve SSLeay_version
            qt.network.ssl: QSslSocket: cannot call unresolved function SSLeay
            qt.network.ssl: Incompatible version of OpenSSL
            libpng warning: iCCP: known incorrect sRGB profile
            =============== SBGPath summary infos ================
            
            ===============
             > SBGPath::getSAMSONPath()                       = /home/dia/NANO-D/SAMSON/0.7.0
             > SBGPath::getSDKPath()                          = .
            ===============
             > SBGPath::getUserDataPath()                     = /home/dia/NANO-D/SAMSON
             > SBGPath::getUserElementPath()                  = /home/dia/.NANO-D/SAMSON/DATA/0.7.0/Elements
             > SBGPath::getUserElementDataPath()              = /home/dia/.NANO-D/SAMSON/DATA/0.7.0/Data/Elements
             > SBGPath::getUserDownloadedElementPath()        = /home/dia/.NANO-D/SAMSON/DATA/0.7.0/Download/Elements
            ===============
             > SBGPath::getDevelopperDataPath()               = 
             > SBGPath::getDevelopperElementPath()            = /Elements
             > SBGPath::getDevelopperElementPackagedPath()    = /Connect/Elements
            ===============
             > SBGPath::getBinaryPath()                       = /home/dia/NANO-D/SAMSON/0.7.0/Binaries
            ===============
             > SBGPath::getCurrentSkinPath()                  = /home/dia/.NANO-D/SAMSON/DATA/0.7.0/Resource/Skins/Default
             > SBGPath::getCursorPath()                       = /home/dia/.NANO-D/SAMSON/DATA/0.7.0/Resource/Skins/Default/Cursors
             > SBGPath::getIconPath()                         = /home/dia/.NANO-D/SAMSON/DATA/0.7.0/Resource/Skins/Default/Icons
             > SBGPath::getImagePath()                        = /home/dia/.NANO-D/SAMSON/DATA/0.7.0/Resource/Skins/Default/Images
             > SBGPath::getSoundPath()                        = /home/dia/.NANO-D/SAMSON/DATA/0.7.0/Resource/Skins/Default/Sounds
             > SBGPath::getSplashScreenPath()                 = /home/dia/.NANO-D/SAMSON/DATA/0.7.0/Resource/Skins/Default/SplashScreens
             > SBGPath::getStylePath()                        = /home/dia/.NANO-D/SAMSON/DATA/0.7.0/Resource/Skins/Default/StyleSheets
            ===============
             > SBGPath::getInterfacePath()                    = /home/dia/.NANO-D/SAMSON/DATA/0.7.0/Resource/Interface
             > SBGPath::getScratchPath()                      = /home/dia/.NANO-D/SAMSON/DATA/0.7.0/Scratch
             > SBGPath::getScratchElementPath()               = /home/dia/.NANO-D/SAMSON/DATA/0.7.0/Scratch/Elements
             > SBGPath::getScratchUpdatesPath()               = /home/dia/.NANO-D/SAMSON/DATA/0.7.0/Scratch/Updates
             > SBGPath::getShaderPath()                       = /home/dia/.NANO-D/SAMSON/DATA/0.7.0/Resource/Shaders
             > SBGPath::getTranslationPath()                  = /home/dia/.NANO-D/SAMSON/DATA/0.7.0/Resource/Translations
            
            =============== SBGPath summary infos ================
            
            "/home/dia/.NANO-D/SAMSON/DATA/0.7.0/Resource/Skins/Default/Cursors"
            "/home/dia/.NANO-D/SAMSON/DATA/0.7.0/Resource/Skins/Default/Icons"
            "/home/dia/.NANO-D/SAMSON/DATA/0.7.0/Elements"
            "/home/dia/.NANO-D/SAMSON/DATA/0.7.0/Scratch"
            "/home/dia/.NANO-D/SAMSON/DATA/0.7.0/Resource/Shaders"
            "/home/dia/.NANO-D/SAMSON/DATA/0.7.0/Resource/Skins/Default/Sounds"
            "/home/dia/.NANO-D/SAMSON/DATA/0.7.0/Resource/Skins/Default/SplashScreens"
            "/home/dia/.NANO-D/SAMSON/DATA/0.7.0/Resource/Skins/Default/StyleSheets"
            "/home/dia/.NANO-D/SAMSON/DATA/0.7.0/Resource/Translations"
            
            =============================================================================
            Allowed elements ids in database: 
            1   ->   "06485695-DEE2-1383-A575-E5AABA05DCCD"
            2   ->   "154ACCDA-8950-C6B2-7456-DAB6BA82AA5D"
            3   ->   "2305E415-C812-1C1A-CDBE-78896176B067"
            4   ->   "385FE362-ADFD-CE55-95C0-4E63560EFA29"
            5   ->   "8B38B2FD-DE8D-F24A-36E7-7AC624173F9F"
            6   ->   "8CBDC8B1-59E1-6459-D68F-B840275DD5E9"
            7   ->   "9DFF7162-FFBF-C149-C9D3-2E1DEBC40321"
            8   ->   "CE375B52-7D0B-7DF0-AA3E-EB0AD85BEBFE"
            9   ->   "CEBACCDA-8950-C6B2-7456-D077BA82AA5D"
            10   ->   "EC83FAEB-1A42-FF16-EEB2-CF021EF38EBF"
            11   ->   "F912F119-7CBB-B5BD-972A-0A02DFCF683D"
            =============================================================================
            
            "start 0 0 files downloaded successfully\n"
            Could not open  "/home/dia/.NANO-D/SAMSON/DATA/0.7.0/Scratch/disabledElements.info"
            Extracting /home/dia/.NANO-D/SAMSON/DATA/0.7.0/Scratch/Elements/06485695-DEE2-1383-A575-E5AABA05DCCD
            Extracting /home/dia/.NANO-D/SAMSON/DATA/0.7.0/Scratch/Elements/154ACCDA-8950-C6B2-7456-DAB6BA82AA5D
            Extracting /home/dia/.NANO-D/SAMSON/DATA/0.7.0/Scratch/Elements/2305E415-C812-1C1A-CDBE-78896176B067
            Extracting /home/dia/.NANO-D/SAMSON/DATA/0.7.0/Scratch/Elements/385FE362-ADFD-CE55-95C0-4E63560EFA29
            Extracting /home/dia/.NANO-D/SAMSON/DATA/0.7.0/Scratch/Elements/8B38B2FD-DE8D-F24A-36E7-7AC624173F9F
            Extracting /home/dia/.NANO-D/SAMSON/DATA/0.7.0/Scratch/Elements/8CBDC8B1-59E1-6459-D68F-B840275DD5E9
            Extracting /home/dia/.NANO-D/SAMSON/DATA/0.7.0/Scratch/Elements/9DFF7162-FFBF-C149-C9D3-2E1DEBC40321
            Extracting /home/dia/.NANO-D/SAMSON/DATA/0.7.0/Scratch/Elements/CE375B52-7D0B-7DF0-AA3E-EB0AD85BEBFE
            Extracting /home/dia/.NANO-D/SAMSON/DATA/0.7.0/Scratch/Elements/CEBACCDA-8950-C6B2-7456-D077BA82AA5D
            Extracting /home/dia/.NANO-D/SAMSON/DATA/0.7.0/Scratch/Elements/EC83FAEB-1A42-FF16-EEB2-CF021EF38EBF
            Extracting /home/dia/.NANO-D/SAMSON/DATA/0.7.0/Scratch/Elements/F912F119-7CBB-B5BD-972A-0A02DFCF683D
            Registering: A visual model to represent secondary structure
            	Registering: Secondary structure
            Registering: This element contains three exporters (*xyz, *.pdb, *.mol2) to easily export models from SAMSON
            	Registering: Protein Data Bank (*.pdb)
            	Registering: XYZ (*.xyz)
            	Registering: Mol2 (*.mol2)
            Registering: An editor to generate atoms from the periodic table
            	Registering: Periodic table
            Registering: An editor to easily twist molecular systems
            	Registering: Twister
            Registering: This element contains a set of essential editors for SAMSON, for example to select, translate, erase, rotate...
            	Registering: Translation controller plane
            	Registering: Torsion
            	Registering: Ruler
            	Registering: Delegate
            	Registering: Translation controller center GUI
            	Registering: Rotation controller axis
            	Registering: Translation controller plane GUI
            	Registering: Rotation controller axis GUI
            	Registering: Angle
            	Registering: Atom-atom distance
            	Registering: Atom name
            	Registering: Translation controller axis
            	Registering: Translation controller center
            	Registering: Translation
            	Registering: Eraser
            	Registering: Rotation controller
            	Registering: Translation controller axis GUI
            	Registering: Bond order
            	Registering: Group name
            	Registering: Translation controller
            	Registering: Move camera
            	Registering: Atom creator
            	Registering: Rotation controller track-ball GUI
            	Registering: Bond length
            	Registering: Rotation controller track-ball
            	Registering: Rectangle selection
            	Registering: Lasso selection
            	Registering: Point selection
            	Registering: Rotation
            Registering: This element is a group called default visual models to easily display different molecule visualizations in SAMSON
            	Registering: Gaussian surface
            	Registering: Ball and stick
            	Registering: Ball-and-stick
            	Registering: Van der Waals
            	Registering: Lines
            	Registering: Licorice
            	Registering: Lines
            	Registering: Van der Waals
            	Registering: Gaussian surface
            	Registering: Licorice
            Registering: SAMSON document exporters (*.sam and *.samx)
            	Registering: SAMSON Documents (*.samx)
            	Registering: SAMSON Documents (*.sam)
            Registering: This element contains three importers (*xyz, *.mol2, *.pdb [with aliases: *.pdb1, ..., *.pdb6, *.ent, *.vdb]) to easily load models into SAMSON
            	Registering: Protein Data Bank (*.pdb4)
            	Registering: Protein Data Bank (*.ent)
            	Registering: Protein Data Bank (*.pdb5)
            	Registering: VIPERdb, PDB format (*.vdb)
            	Registering: Protein Data Bank (*.pdb6)
            	Registering: XYZ (*.xyz)
            	Registering: Protein Data Bank (*.pdb)
            	Registering: Mol2 (*.mol2)
            	Registering: Protein Data Bank (*.pdb1)
            	Registering: Protein Data Bank (*.pdb2)
            	Registering: Protein Data Bank (*.pdb3)
            Registering: SAMSON document importers (*.sam and *.samx)
            	Registering: SAMSON Documents (*.samx)
            	Registering: SAMSON Documents (*.sam)
            Registering: Universal Force Field
            	Registering: Universal Force Field
            	Registering: Universal Force Field
            	Registering: UFF Force Field Factory
            Registering: An element containing six state updaters
            	Registering: SESStateUpdaterPack
            	Registering: SESStateUpdaterPack
            	Registering: Partitioned Euler
            	Registering: SESStateUpdaterPack
            	Registering: Velocity Verlet
            	Registering: SESStateUpdaterPack
            	Registering: Adaptively restrained NVE
            	Registering: Steepest descent
            	Registering: SESStateUpdaterPack
            	Registering: SESStateUpdaterPack
            	Registering: Interactive modeling
            	Registering: Adaptive steepest descent
            Registering: SAMSON Base - Data Model - App
            	Registering: App
            Registering: SAMSON Base - Data Model - Color
            	Registering: Color scheme per chain ID
            	Registering: Constant color scheme
            	Registering: Color scheme per temperature factor
            	Registering: CPK color scheme
            	Registering: Color scheme per residue sequence number
            	Registering: Color scheme per residue type
            	Registering: Color scheme per partial charge
            	Registering: Color scheme per secondary structure type
            	Registering: Color scheme per occupancy
            	Registering: Color scheme per formal charge
            Registering: SAMSON Base - Data Model - Data Graph
            	Registering: Data graph node
            	Registering: Node group
            	Registering: Data graph node color scheme
            Registering: SAMSON Base - Data Model - Document
            	Registering: Label
            	Registering: Camera
            	Registering: Layer
            	Registering: Document
            Registering: SAMSON Base - Data Model - Structural Model
            	Registering: Molecule
            	Registering: Backbone
            	Registering: Atom
            	Registering: Segment
            	Registering: Bond
            	Registering: Side chain
            	Registering: Path
            	Registering: Chain
            	Registering: Structural model
            	Registering: Grid
            	Registering: Structural particle
            	Registering: Residue
            	Registering: Structural nodes
            	Registering: Conformation
            	Registering: Pseudo-atom
            	Registering: Structural group
            Registering: SAMSON Base - Data Model - Visual Model
            Registering: SAMSON Base - Data Model - Controller
            	Registering: Controller
            	Registering: Controller node
            Registering: SAMSON Base - GUI - DataGraph
            Registering: SAMSON Base - GUI - Document
            	Registering: The GUI of a camera
            	Registering: The GUI of a layer
            Registering: SAMSON Base - GUI - Editor
            	Registering: Editor
            Registering: SAMSON Base - GUI - Inspector
            	Registering: Inspector - SBQuantity::mass Factory
            	Registering: Inspector - SBQuantity::length Factory
            	Registering: Inspector - Bool Factory
            	Registering: Inspector - Node Factory
            	Registering: Inspector - SBBond::BondType Factory
            	Registering: Inspector - SBQuantity::dimensionless Factory
            	Registering: Inspector - int Factory
            	Registering: Inspector - SBNode::Type Factory
            	Registering: Inspector - double Factory
            	Registering: Inspector - SBResidue::ResidueType Factory
            	Registering: Inspector - std::string Factory
            	Registering: Inspector - float Factory
            	Registering: Inspector - SBQuantity::second Factory
            	Registering: Inspector - unsigned short Factory
            	Registering: Inspector - SBPosition3 Factory
            	Registering: Inspector - short Factory
            	Registering: Inspector - char Factory
            	Registering: Inspector - SBVector3 Factory
            	Registering: Inspector - SBQuantity::dimensionless Factory
            	Registering: Inspector - unsigned int Factory
            	Registering: Inspector - Atom Factory
            	Registering: Inspector - SBResidue::SecondaryStructureType Factory
            	Registering: Inspector - SBPath::AnimationType Factory
            	Registering: Inspector - SBElement::Type Factory
            	Registering: Inspector - SBQuantity::time Factory
            	Registering: Inspector - char Factory
            Registering: SAMSON Base - GUI - Structural model
            	Registering: The GUI of an atom
            	Registering: The GUI of a structural model
            	Registering: The GUI of a structural model conformation
            	Registering: The GUI of a bond
            	Registering: The GUI of a structural model conformation
            Registering: SAMSON Base - Facade - SAMSON
            	Registering: The SAMSON Facade
            libpng warning: iCCP: known incorrect sRGB profile
            libpng warning: iCCP: known incorrect sRGB profile
            libpng warning: iCCP: known incorrect sRGB profile
            libpng warning: iCCP: known incorrect sRGB profile
            libpng warning: iCCP: known incorrect sRGB profile
            libpng warning: iCCP: known incorrect sRGB profile
            libpng warning: iCCP: known incorrect sRGB profile
            libpng warning: iCCP: known incorrect sRGB profile
            
            =============================================================================
            Allowed elements in database: 
            
                  -----------------------------------------------------------------------
                  -  "elementName" "Secondary structure on GPUs"
                  -  "elementDeveloperID" "C682B30F-0D21-4CDB-B968-B72E225DDC8F"
                  -  "elementID" "06485695-DEE2-1383-A575-E5AABA05DCCD"
                  -  "elementVersion" "0.7.0"
                  -  "checksumDebug" 0
                  -  "checksumRelease" 0
                  -  "elementDescription" ""
                  -  "elementOS" ""
                  -  "samsonVersion" "0.7.0"
                  -  "forceUpdate" false
                  -----------------------------------------------------------------------
            
                  -----------------------------------------------------------------------
                  -  "elementName" "SAMSON Visual Models"
                  -  "elementDeveloperID" "C682B30F-0D21-4CDB-B968-B72E225DDC8F"
                  -  "elementID" "154ACCDA-8950-C6B2-7456-DAB6BA82AA5D"
                  -  "elementVersion" "0.7.0"
                  -  "checksumDebug" 0
                  -  "checksumRelease" 0
                  -  "elementDescription" ""
                  -  "elementOS" ""
                  -  "samsonVersion" "0.7.0"
                  -  "forceUpdate" false
                  -----------------------------------------------------------------------
            
                  -----------------------------------------------------------------------
                  -  "elementName" "Periodic table"
                  -  "elementDeveloperID" "C682B30F-0D21-4CDB-B968-B72E225DDC8F"
                  -  "elementID" "2305E415-C812-1C1A-CDBE-78896176B067"
                  -  "elementVersion" "0.7.0"
                  -  "checksumDebug" 0
                  -  "checksumRelease" 0
                  -  "elementDescription" ""
                  -  "elementOS" ""
                  -  "samsonVersion" "0.7.0"
                  -  "forceUpdate" false
                  -----------------------------------------------------------------------
            
                  -----------------------------------------------------------------------
                  -  "elementName" "Basic importers"
                  -  "elementDeveloperID" "C682B30F-0D21-4CDB-B968-B72E225DDC8F"
                  -  "elementID" "385FE362-ADFD-CE55-95C0-4E63560EFA29"
                  -  "elementVersion" "0.7.7"
                  -  "checksumDebug" 0
                  -  "checksumRelease" 0
                  -  "elementDescription" ""
                  -  "elementOS" ""
                  -  "samsonVersion" "0.7.0"
                  -  "forceUpdate" false
                  -----------------------------------------------------------------------
            
                  -----------------------------------------------------------------------
                  -  "elementName" "Twister"
                  -  "elementDeveloperID" "C682B30F-0D21-4CDB-B968-B72E225DDC8F"
                  -  "elementID" "8B38B2FD-DE8D-F24A-36E7-7AC624173F9F"
                  -  "elementVersion" "0.7.0"
                  -  "checksumDebug" 0
                  -  "checksumRelease" 0
                  -  "elementDescription" ""
                  -  "elementOS" ""
                  -  "samsonVersion" "0.7.0"
                  -  "forceUpdate" false
                  -----------------------------------------------------------------------
            
                  -----------------------------------------------------------------------
                  -  "elementName" "Universal force field"
                  -  "elementDeveloperID" "C682B30F-0D21-4CDB-B968-B72E225DDC8F"
                  -  "elementID" "8CBDC8B1-59E1-6459-D68F-B840275DD5E9"
                  -  "elementVersion" "0.7.5"
                  -  "checksumDebug" 0
                  -  "checksumRelease" 0
                  -  "elementDescription" ""
                  -  "elementOS" ""
                  -  "samsonVersion" "0.7.0"
                  -  "forceUpdate" false
                  -----------------------------------------------------------------------
            
                  -----------------------------------------------------------------------
                  -  "elementName" "SAMSON Format Exporter"
                  -  "elementDeveloperID" "C682B30F-0D21-4CDB-B968-B72E225DDC8F"
                  -  "elementID" "9DFF7162-FFBF-C149-C9D3-2E1DEBC40321"
                  -  "elementVersion" "0.7.0"
                  -  "checksumDebug" 0
                  -  "checksumRelease" 0
                  -  "elementDescription" ""
                  -  "elementOS" ""
                  -  "samsonVersion" "0.7.0"
                  -  "forceUpdate" false
                  -----------------------------------------------------------------------
            
                  -----------------------------------------------------------------------
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            =============================================================================
            
            QPixmap::scaled: Pixmap is a null pixmap
            libpng warning: iCCP: known incorrect sRGB profile
            libpng warning: iCCP: known incorrect sRGB profile
            "File"
            "File"
            "Edit"
            "Edit"
            "App"
            
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            • Ivan
              Ivan last edited by

              It warns about libpng version. I think, that can be the reason. Which version of libpng is required?

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              • DmitriyMarin
                DmitriyMarin last edited by DmitriyMarin

                Actually, you should not worry about the following libpng warning:

                libpng warning: iCCP: known incorrect sRGB profile
                

                The libpng warning might be caused by libpng provided with your Python installation. To check whether this causes the problem, you could try commenting the addition of a path to Python libraries in the SAMSON-Core.sh script:

                #export LD_LIBRARY_PATH=${PYTHON_LIBRARY_PATH}:${LD_LIBRARY_PATH}
                

                I do not think that it is due to libpng, rather it might be a problem of a driver and OpenGL layer provided by Bumblebee.

                Dmitriy,
                The SAMSON Team, https://s-c.io

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                • Ivan
                  Ivan last edited by Ivan

                  It is really strange, that even if I tried to run it with optirun or primusrun in about dialog it showing, that I still using Intel HD card.

                  0_1551452795316_2019-03-01 22-05-53.png

                  I think there is some hidden restart of application GUI inside some python stuff, so really it does not use Nvidia card at all.

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                  • Ivan
                    Ivan @DmitriyMarin last edited by

                    @dmitriymarin

                    Do you have the Nouveau driver blacklisted or uninstalled? Because it causes some issues on Nvidia Optimus GPUs.

                    Yes.

                    dia@lenovo:~$ cat /etc/modprobe.d/nvidia-blacklists-nouveau.conf
                    # You need to run "update-initramfs -u" after editing this file.
                    
                    # see #580894
                    blacklist nouveau
                    
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                    • DmitriyMarin
                      DmitriyMarin last edited by

                      Python is not used by SAMSON, Python is present in the launching script just to add a path to its libraries so that users could use the Python Scripting Element. So you can safely comment the Python-related block in the launching script if you are not using the Python Scripting Element.

                      The information you see in the About dialogue (or in Preferences > Installation > General) shows all the graphics cards, meaning that it can show both CPU and GPU. But in your case, the SAMSON installer could not find your Nvidia GPU.

                      Personally, I used SAMSON before on a laptop with Linux (Ubuntu) equipped with Nvidia GeForge GTX 670MX GPU (which has Optimus technology) but without Bumblebee/optirun installed. So the problem seems to be either in SAMSON not being able to properly detect GPU or lack of some drivers.

                      How did you install SAMSON? With optirun or without? Does it give you the same behavior in both cases?

                      Dmitriy,
                      The SAMSON Team, https://s-c.io

                      1 Reply Last reply Reply Quote 0
                      • DmitriyMarin
                        DmitriyMarin last edited by DmitriyMarin

                        Have you tried to install SAMSON with primusrun and then launching SAMSON with it?

                        If there is a configuration file for optirun/primusrun which allows specifying which apps should use GPU you may try specifying GPU for SAMSON.

                        Is it possible for you to try with nvidia-prime? It should provide better OpenGL support compared to optirun since optirun has an additional layer VirtualGL which might be causing this issue.

                        Dmitriy,
                        The SAMSON Team, https://s-c.io

                        Ivan 1 Reply Last reply Reply Quote 0
                        • Ivan
                          Ivan @DmitriyMarin last edited by Ivan

                          @dmitriymarin said in SAMSON with hybrid graphics cards (Intel/Nvidia):

                          Have you tried to install SAMSON with primusrun and then launching SAMSON with it?

                          I tried, and that did not help.

                          If there is a configuration file for optirun/primusrun which allows specifying which apps should use GPU you may try specifying GPU for SAMSON.

                          There is no such a file :( It is controlled by the prefix in the command line when I calling the app.

                          Is it possible for you to try with nvidia-prime? It should provide better OpenGL support compared to optirun since optirun has an additional layer VirtualGL which might be causing this issue.

                          I have no such a command nvidia-prime... If I understand correct, primusrun have no such an extra layer.

                          DmitriyMarin 1 Reply Last reply Reply Quote 0
                          • DmitriyMarin
                            DmitriyMarin @Ivan last edited by DmitriyMarin

                            @ivan said in SAMSON with hybrid graphics cards (Intel/Nvidia):

                            I tried, and that did not help.

                            Apparently, SAMSON might be having a problem properly detecting your GPU during the installation, even with primusrun.

                            Nvidia PRIME does not go with Bumblebee/optirun/primusrun, it is an Nvidia technology and it also allows one to switch between CPU and Nvidia GPU without additional layers giving a direct OpenGL access, which is more preferable. It is done via GPU offloading. But it comes with a downside: for a switch between CPU and GPU to take an effect one needs to log out and log in back (OS needs to do some re-initializations).
                            0_1551542253508_nvidia-prime.png
                            You can check whether you have Nvidia PRIME or not in the Nvidia X Server Settings. Nvidia PRIME is either installed together with an nvidia proprietary driver or you can install it via (after installing nvidia proprietary drivers):

                            sudo apt install nvidia-prime 
                            

                            Note: To use Nvidia PRIME you might need to remove Bumblebee/optirun/primusrun.

                            Note: In case, if you are using Nvidia PRIME, SAMSON should be installed with an active Nvidia GPU and to use SAMSON it would be necessary to enable to Nvidia GPU.

                            Personally, on my laptop with Ubuntu 16.04 and equipped with Nvidia GeForce GTX 670MX I have the nvidia-384 driver installed with Nvidia PRIME. I had Bumblebee installed many years ago, but I could not make it work with CUDA.
                            0_1551542531017_samson-about-gpu.png

                            Dmitriy,
                            The SAMSON Team, https://s-c.io

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                            • Ivan
                              Ivan last edited by

                              I installed Linux Mint 19.1 and installed nvidia-driver-390. Now interface has no such troubles. Thank you for advices.

                              DmitriyMarin 1 Reply Last reply Reply Quote 1
                              • Ivan
                                Ivan last edited by

                                Should interface eat so much 96% CPU from one of cores ?

                                DmitriyMarin 1 Reply Last reply Reply Quote 0
                                • DmitriyMarin
                                  DmitriyMarin @Ivan last edited by

                                  @Ivan
                                  Great! I am glad that you solved the issue! Apparently, it was a problem with drivers. Do you use primusrun/optirun or just nvidia GPU directly?

                                  Dmitriy,
                                  The SAMSON Team, https://s-c.io

                                  Ivan 1 Reply Last reply Reply Quote 0
                                  • DmitriyMarin
                                    DmitriyMarin @Ivan last edited by

                                    @ivan
                                    Yes, sorry, it can consume quite a lot sometimes. For me, for example, just the interface consumes sometimes 30-50% of one CPU core. To decrease the CPU consumption, you can hide the Document view (Ctrl/Cmd+1) or the Inspector (Ctrl/Cmd+I) when you do not need them. There is an issue with them which causes such consumption. It will be fixed in the next version of SAMSON.

                                    Dmitriy,
                                    The SAMSON Team, https://s-c.io

                                    Ivan 1 Reply Last reply Reply Quote 0
                                    • Ivan
                                      Ivan @DmitriyMarin last edited by

                                      @dmitriymarin Now I am using Nvidia PRIME like you showed in screenshot above. I do not think, that it is driver issue, but it is how you utilize them. I am also developing some software with OpenGL, however by using lower version API (1.2). So it works both Intel and Nvidia cards. I think, that advanced functions like in OpenGL 3.2 should be used using procedure addresses like it is doing with SDL_GL_GetProcAddress.

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                                      • Ivan
                                        Ivan @DmitriyMarin last edited by Ivan

                                        @dmitriymarin said in SAMSON with hybrid graphics cards (Intel/Nvidia):

                                        @ivan
                                        Yes, sorry, it can consume quite a lot sometimes. For me, for example, just the interface consumes sometimes 30-50% of one CPU core. To decrease the CPU consumption, you can hide the Document view (Ctrl/Cmd+1) or the Inspector (Ctrl/Cmd+I) when you do not need them. There is an issue with them which causes such consumption. It will be fixed in the next version of SAMSON.

                                        Will wait :) SAMSON has very cute interface, however such cost of one core for that it is not acceptable!

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                                        • DmitriyMarin
                                          DmitriyMarin last edited by

                                          Dear @Ivan ,
                                          Thanks to issues raised on the forum, we have fixed the issue in SAMSON causing problems with the viewport when using Intel integrated graphics processor. This issue might have been causing the problem you have posted in this thread. The new installation of SAMSON should resolve the issue.

                                          Dmitriy,
                                          The SAMSON Team, https://s-c.io

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