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  1. Qt
  2. QTBUG-67898

glxGetProcAddress not found - Q_UNREACHABLE in gl_surface_qt.cpp

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    Details

    • Type: Bug
    • Status: Closed
    • Priority: P1: Critical
    • Resolution: Done
    • Affects Version/s: 5.11.0 Beta 4, 5.11.0
    • Fix Version/s: 5.11.0 RC 1
    • Component/s: WebEngine
    • Labels:
      None
    • Environment:
      Archlinux, Intel graphics: Mesa DRI Intel(R) HD Graphics 520 (Skylake GT2)
    • Commits:
      2370f8f6afb6d477123de85be3a988993d4b351e

      Description

      When trying to run this simple PyQt application:

      import sys
      
      from PyQt5.QtCore import QUrl
      from PyQt5.QtWidgets import QApplication
      from PyQt5.QtWebEngineWidgets import QWebEngineView
      
      app = QApplication(sys.argv)
      wv = QWebEngineView()
      
      wv.load(QUrl('https://www.qutebrowser.org/'))
      wv.show()
      
      app.exec_()
      

      I get:

      [18977:19027:0423/202959.647419:ERROR:gl_surface_qt.cpp(199)] glxGetProcAddress not found.
      [18977:19027:0423/203000.255247:ERROR:gl_surface_qt.cpp(294)] Requested OpenGL implementation is not supported. Implementation: 0
      ASSERT failure in Q_UNREACHABLE(): "Q_UNREACHABLE was reached", file ../gl_surface_qt.cpp, line 295
      Received signal 6
      #0 0x7f2cc5b010d0 base::debug::StackTrace::StackTrace()
      #1 0x7f2cc5aff139 base::debug::StackTrace::StackTrace()
      #2 0x7f2cc5affd04 base::debug::(anonymous namespace)::StackDumpSignalHandler()
      #3 0x7f2cd9985dd0 <unknown>
      #4 0x7f2cd95f1860 __GI_raise
      #5 0x7f2cd95f2ec9 __GI_abort
      #6 0x7f2cd7d2dfdc qt_message_fatal()
      #7 0x7f2cd7d2ed65 QMessageLogger::fatal()
      #8 0x7f2cd7d28cee qt_assert_x()
      #9 0x7f2cc202c604 gl::init::CreateOffscreenGLSurfaceWithFormat()
      #10 0x7f2cc7346090 gl::init::CreateOffscreenGLSurface()
      #11 0x7f2cca755505 gpu::GpuChannelManager::GetDefaultOffscreenSurface()
      #12 0x7f2cca7608d6 gpu::GLES2CommandBufferStub::Initialize()
      #13 0x7f2cca748bb9 gpu::GpuChannel::OnCreateCommandBuffer()
      #14 0x7f2cca74e860 _ZN4base20DispatchToMethodImplIPN3gpu10GpuChannelEMS2_FvRK28GPUCreateCommandBufferConfigiNS_18SharedMemoryHandleEPNS1_13ContextResultEPNS1_12CapabilitiesEESt5tupleIJS4_iS7_EESE_IJS8_SA_EEJLm0ELm1ELm2EEJLm0ELm1EEEEvRKT_T0_OT1_PT2_St16integer_sequenceImJXspT3_EEESP_ImJXspT4_EEE
      #15 0x7f2cca74c96f _ZN4base16DispatchToMethodIPN3gpu10GpuChannelEMS2_FvRK28GPUCreateCommandBufferConfigiNS_18SharedMemoryHandleEPNS1_13ContextResultEPNS1_12CapabilitiesEESt5tupleIJS4_iS7_EESE_IJS8_SA_EEEEvRKT_T0_OT1_PT2_
      #16 0x7f2cca74ad51 _ZN3IPC8MessageTI38GpuChannelMsg_CreateCommandBuffer_MetaSt5tupleIJ28GPUCreateCommandBufferConfigiN4base18SharedMemoryHandleEEES2_IJN3gpu13ContextResultENS7_12CapabilitiesEEEE8DispatchINS7_10GpuChannelESD_vMSD_FvRKS3_iS5_PS8_PS9_EEEbPKNS_7MessageEPT_PT0_PT1_T2_
      #17 0x7f2cca747e10 gpu::GpuChannel::OnControlMessageReceived()
      #18 0x7f2cca7482a3 gpu::GpuChannel::HandleMessageHelper()
      #19 0x7f2cca74838b gpu::GpuChannel::HandleOutOfOrderMessage()
      #20 0x7f2cca752b40 _ZN4base8internal13FunctorTraitsIMN3gpu10GpuChannelEFvRKN3IPC7MessageEEvE6InvokeIRKNS_7WeakPtrIS3_EEJS7_EEEvS9_OT_DpOT0_
      #21 0x7f2cca75182f _ZN4base8internal12InvokeHelperILb1EvE8MakeItSoIRKMN3gpu10GpuChannelEFvRKN3IPC7MessageEERKNS_7WeakPtrIS5_EEJS9_EEEvOT_OT0_DpOT1_
      #22 0x7f2cca74fef7 _ZN4base8internal7InvokerINS0_9BindStateIMN3gpu10GpuChannelEFvRKN3IPC7MessageEEJNS_7WeakPtrIS4_EES6_EEEFvvEE7RunImplIRKSA_RKSt5tupleIJSC_S6_EEJLm0ELm1EEEEvOT_OT0_St16integer_sequenceImJXspT1_EEE
      #23 0x7f2cca74e04a _ZN4base8internal7InvokerINS0_9BindStateIMN3gpu10GpuChannelEFvRKN3IPC7MessageEEJNS_7WeakPtrIS4_EES6_EEEFvvEE3RunEPNS0_13BindStateBaseE
      #24 0x7f2cc20ba230 _ZNO4base12OnceCallbackIFvvEE3RunEv
      #25 0x7f2cc5b01777 base::debug::TaskAnnotator::RunTask()
      #26 0x7f2cc5b5af8c base::internal::IncomingTaskQueue::RunTask()
      #27 0x7f2cc5b5f282 base::MessageLoop::RunTask()
      #28 0x7f2cc5b5f408 base::MessageLoop::DeferOrRunPendingTask()
      #29 0x7f2cc5b5f737 base::MessageLoop::DoWork()
      #30 0x7f2cc5b6022b base::MessagePumpDefault::Run()
      #31 0x7f2cc5b5ea48 base::MessageLoop::Run()
      #32 0x7f2cc5bd0720 base::RunLoop::Run()
      #33 0x7f2cc5c58f51 base::Thread::Run()
      #34 0x7f2cc5c59770 base::Thread::ThreadMain()
      #35 0x7f2cc5c4dd6f base::(anonymous namespace)::ThreadFunc()
      #36 0x7f2cd997b08c start_thread
      #37 0x7f2cd96b2e7f __GI___clone
        r8: 0000000000000000  r9: 00007f2c86550a30 r10: 0000000000000008 r11: 0000000000000246
       r12: 00007f2c86550e28 r13: 0000000000000000 r14: 00007f2c86551068 r15: 00007f2c3c008618
        di: 0000000000000002  si: 00007f2c86550a30  bp: 00007f2c86550c98  bx: 0000000000000006
        dx: 0000000000000000  ax: 0000000000000000  cx: 00007f2cd95f1860  sp: 00007f2c86550a30
        ip: 00007f2cd95f1860 efl: 0000000000000246 cgf: 002b000000000033 erf: 0000000000000000
       trp: 0000000000000000 msk: 0000000000000000 cr2: 0000000000000000
      [end of stack trace]
      Calling _exit(1). Core file will not be generated.
      

      This seems similar to QTBUG-66668, but happens on the current 5.11.0 branch on Linux (i.e. with that fix in, and not on Windows).

      I can't reproduce it with a C++ example for some reason, but I don't see how this could be a PyQt issue either...

      It does not happen with whatever MaintainanceTool calls 5.11.0-201804081744 (I think that was beta 3?), but does happen with 5.11.0-201804181845 (beta 4) and the current 5.11.0 head.

      It also does not happen in my more complex PyQt application for some reason...

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              Assignee:
              michal Michal Klocek
              Reporter:
              the compiler Florian Bruhin
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                Dates

                Created:
                Updated:
                Resolved:

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