Comment 40 for bug 1792932

Hi there! Same issue, same use case, same distro.

I'm using the radeon driver instead of amdgpu but the assert seems to be the same one anyway. I don't have the actual assert message, but I do have a backtrace that doesn't seem to have been posted here before:

Backtrace:
0: /usr/lib/xorg-server/Xorg (OsLookupColor+0x139) [0x55cd08924e99]
1: /usr/lib/libpthread.so.0 (funlockfile+0x50) [0x7f6d28fb2e1f]
2: /usr/lib/libc.so.6 (gsignal+0x110) [0x7f6d28c1e860]
3: /usr/lib/libc.so.6 (abort+0x1c9) [0x7f6d28c1fec9]
4: /usr/lib/libc.so.6 (__assert_fail_base+0x14c) [0x7f6d28c170bc]
5: /usr/lib/libc.so.6 (__assert_fail+0x43) [0x7f6d28c17133]
6: /usr/lib/xorg-server/Xorg (dixRegisterPrivateKey+0x23f) [0x55cd087dd9ff]
7: /usr/lib/xorg/modules/libglamoregl.so (glamor_init+0xca) [0x7f6d1ba9d3fa]
8: /usr/lib/xorg/modules/drivers/modesetting_drv.so (_init+0x39de) [0x7f6d1bcd2d2e]
9: /usr/lib/xorg-server/Xorg (AddGPUScreen+0xf0) [0x55cd087bf630]
10: /usr/lib/xorg-server/Xorg (xf86PlatformMatchDriver+0xa9c) [0x55cd0881f59c]
11: /usr/lib/xorg-server/Xorg (xf86PlatformDeviceCheckBusID+0x211) [0x55cd08824881]
12: /usr/lib/xorg-server/Xorg (config_fini+0x9bd) [0x55cd0882105d]
13: /usr/lib/xorg-server/Xorg (config_fini+0x1340) [0x55cd08822420]
14: /usr/lib/xorg-server/Xorg (OsCleanup+0x621) [0x55cd08925e01]
15: /usr/lib/xorg-server/Xorg (WaitForSomething+0x1fb) [0x55cd0891e70b]
16: /usr/lib/xorg-server/Xorg (SendErrorToClient+0x113) [0x55cd087bf023]
17: /usr/lib/xorg-server/Xorg (InitFonts+0x420) [0x55cd087c32a0]
18: /usr/lib/libc.so.6 (__libc_start_main+0xea) [0x7f6d28c0af4a]
19: /usr/lib/xorg-server/Xorg (_start+0x2a) [0x55cd087acf0a]

Followed by "Caught signal 6 (Aborted). Server aborting".

The assertion message in the attached (but not mine) x-0.log.old is:

>Xorg: privates.c:385: dixRegisterPrivateKey: Assertion `!global_keys[type].created' failed.

BTW, useful stuff in the comments here regarding AutoAddGPU, the (useless) Ignore setting and DRI3 stuff! I think I learnt more from reading a couple of comments here than in the past four hours of fiddling.