Bug#924540: xserver-xorg-video-radeon: undefined symbol: glamor_finish when AccelMethod is EXA and TearFree is on

[Michel Dänzer]

On 2019-03-13 11:28 p.m., Antonio Ospite wrote:
> Package: xserver-xorg-video-radeon
> Version: 1:19.0.0-1
> Severity: minor
> 
> Dear Maintainer,
> 
> when upgrading from 18.1.0-1 to 18.1.99+git20190207-1 (or 19.0.0-1) Xorg
> failed to start on my system with the following error in the logs:
> 
> mar 13 23:06:44 jcn /usr/lib/gdm3/gdm-x-session[12568]: /usr/lib/xorg/Xorg: symbol lookup error: /usr/lib/xorg/modules/drivers/radeon_drv.so: undefined symbol: glamor_finish
> 
> at first I worked around the problem by downgrading the package.
> 
> However upon further investigation it turned out I had some old custom
> config in /usr/share/X11/xorg.conf.d/ which breaks new versions of the
> driver.
> 
> In particular, having both the settngs below in
> /usr/share/X11/xorg.conf.d/10-radeon.conf makes Xorg fail to start when
> using the xserver-xorg-video-radeon driver:
> 
> 	Option "AccelMethod" "EXA"
>  	Option "TearFree" "on"
> 
> Anyway, removing these options fixes the issue for me.
> 
> Not sure if this is a regression [...]

It is, thanks for the report. Fixed by
https://gitlab.freedesktop.org/xorg/driver/xf86-video-ati/commit/79bc0e054f37026377d54cac6cd8127d4aa9baca