[Bug 250933] AMD Radeon, FreeBSD 12.2, startx fails: Caught signal 6 (Abort trap). Server aborting

[bugzilla-noreply at freebsd.org]

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=250933

Jan Beich <jbeich at FreeBSD.org> changed:

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                 CC|                            |jbeich at FreeBSD.org

--- Comment #2 from Jan Beich <jbeich at FreeBSD.org> ---
(In reply to Kurt Jaeger from comment #0)
> (II) AMDGPU(0): Setting screen physical size to 1016 x 571

Can you try modesetting DDX driver (it's part of xorg-server package)? Set
Driver to "modesetting" in xorg.conf or deinstall xf86-video-amdgpu and remove
xorg.conf.

> (EE) 0: /usr/local/bin/Xorg (?+0x0) [0x41c400]
> (EE) unw_get_proc_name failed: no unwind info found [-10]
> (EE) 1: /lib/libthr.so.3 (?+0x0) [0x800928aa0]
> (EE) unw_get_proc_name failed: no unwind info found [-10]

Symbol addresses without exact binary and core dump are useless. Rebuild
xorg-server WITH_DEBUG=1 (unoptimized, debug symbols) or STRIP="" (optimized,
non-debug symbols) then re-upload Xorg.0.log.

> Any ideas what can be the next step to debug this ?

Try graphics/kmscube on console, mainly to check /dev/dri/* work fine. However,
OpenGL may fall back to software rendering. Also try vkcube-display from
devel/vulkan-tools.

If the issue is in the kernel driver running under truss(1) and raising
compat.linuxkpi.drm_debug may help determine which DRM ioctl fails and why.
However, connecting "why" to what introduced the regression may still be hard
without bisecting the kernel or at least $SYSDIR/compat/linuxkpi bits.

> Rolling back to 12.1 etc. would be a huge time sink 8-(

Even with bectl(8) or is this a new machine? Maybe try 13.0-CURRENT with
drm-current-kmod but keep userland and other ports as is.

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