Bug#910846: X server "Segmentation fault at address 0x0" when using about:support in Firefox-based browsers.

[Michel Dänzer]

On 2018-10-12 6:40 a.m., Gong S. wrote:
> Package: xserver-xorg-video-radeon
> Version: 1:18.1.0-1
> 
> I am using a standalone AMD HD 7670. "firmware-amd-graphics" is installed and loaded during boot.
> It seems that whenever I tries to query information about hardware acceleration, X segfaults.
> "dmesg" does not show any error or warning after segfault.
> Sometimes other programs or games trigger it as well, with the same problem described in the file Xorg.0.log.

[...]

> [   324.504] (EE) Backtrace:
> [   324.505] (EE) 0: /usr/lib/xorg/Xorg (OsLookupColor+0x139) [0x562764468de9]
> [   324.505] (EE) 1: /lib/x86_64-linux-gnu/libpthread.so.0 (funlockfile+0x50) [0x7f100883292f]
> [   324.506] (EE) 2: /usr/lib/xorg/modules/drivers/radeon_drv.so (_init+0x1592) [0x7f10073d4b24]
> [   324.506] (EE) 3: /usr/lib/xorg/Xorg (dri3_send_open_reply+0x55d) [0x562764438b4d]
> [   324.506] (EE) 4: /usr/lib/xorg/Xorg (drm_format_for_depth+0x93b) [0x56276443827b]
> [   324.506] (EE) 5: /usr/lib/xorg/Xorg (SendErrorToClient+0x35e) [0x56276430a97e]
> [   324.506] (EE) 6: /usr/lib/xorg/Xorg (InitFonts+0x3b6) [0x56276430e906]
> [   324.506] (EE) 7: /lib/x86_64-linux-gnu/libc.so.6 (__libc_start_main+0xe7) [0x7f1008683b17]
> [   324.506] (EE) 8: /usr/lib/xorg/Xorg (_start+0x2a) [0x5627642f867a]
> [   324.506] (EE) 
> [   324.506] (EE) Segmentation fault at address 0x0

Please make sure the xserver-xorg-video-radeon-dbgsym and
xserver-xorg-core-dbgsym packages are installed, and either get a
backtrace with gdb or another log file.


Does the problem also happen without Option "AccelMethod" "EXA"? That's
the default and recommended configuration for your GPU.


-- 
Earthling Michel Dänzer               |               http://www.amd.com
Libre software enthusiast             |             Mesa and X developer