Bug#849224: xorg: Lots of graphical lockups

[Ryan Mattox]

Source: xorg
Severity: important

Dear Maintainer,

As I was using my computer and setting up my second monitor, my display locked
up and would only unlock when I went to a different tty and back to X. I
eventually figured out compton was locking up my graphics, so I disabled it,
but other programs such as games like supertuxkart and funguloids freeze up and
playback from vlc also freezes up. Even simple things like glxgears freeze up.
Chrome freezes up too, but firefox does not, even when playing fullscreen
video.
However, if I run games with the environment variable "vblank_mode=0", games
work again, even chrome and compton works, but vlc still has troubles decoding
video.
Also I'm running the open source radeon driver with a AMD Radeon HD 6400M card
if it matters.
Anyway, thanks for putting in the time to look at my problem.



-- System Information:
Debian Release: stretch/sid
APT prefers testing
APT policy: (900, 'testing'), (800, 'unstable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 4.8.0-2-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages xserver-xorg depends on:
ii x11-xkb-utils 7.7+3
ii xkb-data 2.18-1
ii xserver-xorg-core 2:1.19.0-2
ii xserver-xorg-input-all 1:7.7+18
ii xserver-xorg-input-libinput [xorg-driver-input] 0.22.0-1+b1
ii xserver-xorg-input-synaptics [xorg-driver-input] 1.9.0-1+b1
ii xserver-xorg-input-wacom [xorg-driver-input] 0.33.0-1+b1
ii xserver-xorg-video-ati [xorg-driver-video] 1:7.8.0-1+b1
ii xserver-xorg-video-mach64 [xorg-driver-video] 6.9.5-1+b2
ii xserver-xorg-video-r128 [xorg-driver-video] 6.10.1-2+b1
ii xserver-xorg-video-radeon [xorg-driver-video] 1:7.8.0-1+b1
ii xserver-xorg-video-vmware [xorg-driver-video] 1:13.2.1-1+b1

Versions of packages xserver-xorg recommends:
ii libgl1-mesa-dri 13.0.2-1

[Michel Dänzer]

On 24/12/16 04:13 AM, Ryan Mattox wrote:
> Source: xorg
> Severity: important
>
> Dear Maintainer,
>
> As I was using my computer and setting up my second monitor, my display locked
> up and would only unlock when I went to a different tty and back to X. I
> eventually figured out compton was locking up my graphics, so I disabled it,
> but other programs such as games like supertuxkart and funguloids freeze up and
> playback from vlc also freezes up. Even simple things like glxgears freeze up.
> Chrome freezes up too, but firefox does not, even when playing fullscreen
> video.
> However, if I run games with the environment variable "vblank_mode=0", games
> work again, even chrome and compton works, but vlc still has troubles decoding
> video.
> Also I'm running the open source radeon driver with a AMD Radeon HD 6400M card
> if it matters.
> Anyway, thanks for putting in the time to look at my problem.

Could be bug #846779 . The following may serve as a workaround in
/etc/X11/xorg.conf:

Section "Device"
Identifier "Device0"
Option "AccelMethod" "glamor"
Option "DRI" "3"
EndSection


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