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Errors when using VirtualBox with 3D acceleration: gr: ILLEGAL_CLASS ch 6 [007f7f8000 VirtualBox[5063]] subc 0 class c000 mthd 2390 data 00000000

Submitted by mpiechotka@nvidia.com

Assigned to Nouveau Project

Link to original bug (#99954)

Description

On W530 with iGPU disabled I see the errors in dmesg log when I try to run VirtualBox with 3D acceleration:

[ 8781.350709] nouveau 0000:01:00.0: gr: ILLEGAL_CLASS ch 6 [007f7f8000 VirtualBox[5063]] subc 0 class c000 mthd 2390 data 00000000
[ 8781.350729] nouveau 0000:01:00.0: gr: ILLEGAL_CLASS ch 6 [007f7f8000 VirtualBox[5063]] subc 0 class c000 mthd 2390 data 00000000
[ 8781.350749] nouveau 0000:01:00.0: gr: ILLEGAL_CLASS ch 6 [007f7f8000 VirtualBox[5063]] subc 0 class c000 mthd 2390 data 00000000
[ 8781.350769] nouveau 0000:01:00.0: gr: ILLEGAL_CLASS ch 6 [007f7f8000 VirtualBox[5063]] subc 0 class c000 mthd 2390 data 00000000
[ 8781.350789] nouveau 0000:01:00.0: gr: ILLEGAL_CLASS ch 6 [007f7f8000 VirtualBox[5063]] subc 0 class c000 mthd 2390 data 00000000
[ 8781.350808] nouveau 0000:01:00.0: gr: ILLEGAL_CLASS ch 6 [007f7f8000 VirtualBox[5063]] subc 0 class c000 mthd 2390 data 00000000
[ 8781.350828] nouveau 0000:01:00.0: gr: ILLEGAL_CLASS ch 6 [007f7f8000 VirtualBox[5063]] subc 0 class c000 mthd 2390 data 00000000
[ 8781.350848] nouveau 0000:01:00.0: gr: ILLEGAL_CLASS ch 6 [007f7f8000 VirtualBox[5063]] subc 0 class c000 mthd 2390 data 00000000
[ 8781.350868] nouveau 0000:01:00.0: gr: ILLEGAL_CLASS ch 6 [007f7f8000 VirtualBox[5063]] subc 0 class c000 mthd 2390 data 00000000
[ 8781.350888] nouveau 0000:01:00.0: gr: ILLEGAL_CLASS ch 6 [007f7f8000 VirtualBox[5063]] subc 0 class c000 mthd 2390 data 00000000
[ 8781.350907] nouveau 0000:01:00.0: gr: ILLEGAL_CLASS ch 6 [007f7f8000 VirtualBox[5063]] subc 0 class c000 mthd 2390 data 00000000
[ 8781.350927] nouveau 0000:01:00.0: gr: ILLEGAL_CLASS ch 6 [007f7f8000 VirtualBox[5063]] subc 0 class c000 mthd 2380 data 00000800
[ 8781.350947] nouveau 0000:01:00.0: gr: ILLEGAL_CLASS ch 6 [007f7f8000 VirtualBox[5063]] subc 0 class c000 mthd 2384 data 00000000
[ 8781.350967] nouveau 0000:01:00.0: gr: ILLEGAL_CLASS ch 6 [007f7f8000 VirtualBox[5063]] subc 0 class c000 mthd 2388 data 00380800

VirtualBox itself has hang.