<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW --- - GPU lockups with kernel 3.11.0 / 3.12-rc1 (with bug 68235's patches applied) when dpm=1 on r600g (Cayman)" href="https://bugs.freedesktop.org/show_bug.cgi?id=69723#c33">Comment # 33</a> on <a class="bz_bug_link bz_status_NEW " title="NEW --- - GPU lockups with kernel 3.11.0 / 3.12-rc1 (with bug 68235's patches applied) when dpm=1 on r600g (Cayman)" href="https://bugs.freedesktop.org/show_bug.cgi?id=69723">bug 69723</a> from <a class="email" href="mailto:alexandre.f.demers@gmail.com" title="Alexandre Demers <alexandre.f.demers@gmail.com>"> Alexandre Demers</a> <pre>I made an observation: the hang will happen sooner when I play a movie. However, playing a video is not needed to hang the system, it just happens quicker. It happens only usual tasks (usually when switching of window or when scrolling in a window). I know to have tracked it that the performance level changes a lot when a video is being played depending of what else is going on. So, I tried something: I forced performance level to "high". By doing so, I had no crash (daily tasks, launched a quick piglit run, started TF2). I then force performance level to "low" and then I did pretty much the same thing without any problem. So it seems the problem is not with a performance level per-se, at least not with low and high. I would have to test with medium. It could also be interesting to test UVD performance levels, which I doubt is the problem since I can play videos and hangs happen even when UVD is not being used or no videos are being played. We could look at other things also. Maybe it is triggered after switching performance levels soo many times or when doing some combination. Could we be switching too often or too fast for the card? Many questions to investigate.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>