Bug#754930: xserver-xorg-video-radeon: radeon driver segfault with upgrade to xorg 1.16

Michel Dänzer michel at daenzer.net
Wed Jul 16 00:01:02 PDT 2014

On 16.07.2014 15:27, Michael Strobel wrote:
> i recently upgrade my xserver to 1.16 and therefore switched from fglrx
> to radeon (fgrlx doesn't support xserver 1.16 yet). When i'm trying to
> start the xserver it sefaults (see logs). I'm not sure if it is a
> side effect from switching from fgrlx to radeon. I think i uninstalled
> fglrx properly.

I guess it's possible fglrx left the EGL stack messed up... If you start
Xorg with the environment variable EGL_LOG_LEVEL=debug, there should be
some more information about that in its stderr output.

> [   210.846] (EE) Backtrace:
> [   210.846] (EE) 0: /usr/bin/X (xorg_backtrace+0x49) [0x7f2d70d78339]
> [   210.846] (EE) 1: /usr/bin/X (0x7f2d70bcd000+0x1af3a9) [0x7f2d70d7c3a9]
> [   210.846] (EE) 2: /lib/x86_64-linux-gnu/libc.so.6 (0x7f2d6e925000+0x35480) [0x7f2d6e95a480]
> [   210.847] (EE) 3: /lib/x86_64-linux-gnu/libc.so.6 (0x7f2d6e925000+0x12530a) [0x7f2d6ea4a30a]
> [   210.847] (EE) 4: /usr/lib/x86_64-linux-gnu/libepoxy.so.0 (0x7f2d6b22b000+0x5402f) [0x7f2d6b27f02f]
> [   210.847] (EE) 5: /usr/lib/xorg/modules/libglamoregl.so (glamor_init+0x15c) [0x7f2d6b72284c]

It looks like it could be a bug in libepoxy0. It would be great if you
could get a backtrace with gdb, ideally with
/usr/lib/x86_64-linux-gnu/libepoxy.so.0 rebuilt to have debugging symbols.

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

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