Dear Maintainer,


The gpu occasionally locks up at random. Sometimes it can recover, other times
it requires a restart.  GPU is radeon HD6850.

uname -a gives the following:

Linux debian 4.3.0-1-amd64 #1 SMP Debian 4.3.3-5 (2016-01-04) x86_64 GNU/Linux

i think i have same bug, but different gpu which is amd hd5850.
crashes are rare, roughly speaking once a month but recently somewhat more common. crashes happen randomly but i suspect some kind of action is needed to crash the system like drawing web page or clicking the mouse button. when crashes happen it usually gets into black screen with total linux freeze, and log files doesn't contain anything relevant, last time i used netconsole (kernel logs) without anything relevant. one time screen has gone into black and recovered and crashed after that. one time it rebooted (though i was sleeping so i didn't know what was going on exactly, xscreensaver was on though).

this bug report exist already so i send this information but i have other suspects like motherboard.

Package: xserver-xorg-video-radeon
Version: 1:7.5.0-1

Dear Maintainer,

I have an radeon HD 5750

In phenomenicaly random moment ,  in frequency of one per day , and usually
while i play in the same time Stellaris (starting it from withing the steam
client)
linux will freeze and screen will become blank .Fans are still operational ,
also i tested another screen but still blank.

/var/log/syslog display hundred times :

ec 31 17:56:28 enous kernel: [20887.723072] radeon 0000:01:00.0: GPU lockup
(current fence id 0x00000000007c89d8 last fence id 0x00000000007c89e0 on ring
0)
Dec 31 17:56:29 enous kernel: [20888.234984] radeon 0000:01:00.0: ring 0
stalled for more than 216576msec
Dec 31 17:56:29 enous kernel: [20888.234987] radeon 0000:01:00.0: GPU lockup
(current fence id 0x00000000007c89d8 last fence id 0x00000000007c89e0 on ring
0)
Dec 31 17:56:29 enous kernel: [20888.746986] radeon 0000:01:00.0: ring 0
stalled for more than 217088msec


*** Reporter, please consider answering these questions, where appropriate ***

   * What led up to the situation?
   * What exactly did you do (or not do) that was effective (or
     ineffective)?
   * What was the outcome of this action?
   * What outcome did you expect instead?

*** End of the template - remove these template lines ***