On Mon, 13 Sep 2010 23:36:11 +0300 Vasily Khoruzhick <anars...@gmail.com> wrote:
> Hi there, I've just built graphics stack (xf86-video-intel, libdrm, mesa) > from > git (but I'm on 2.6.35.x kernel) and still experiencing vsync troubles > without > composite manager, here's output of glxgears: > > $ glxgears > Running synchronized to the vertical refresh. The framerate should be > approximately the same as the monitor refresh rate. > 243 frames in 5.0 seconds = 48.124 FPS > 157 frames in 5.0 seconds = 31.300 FPS > 155 frames in 5.0 seconds = 30.864 FPS > > But I'm pretty sure that vertical refresh is 60 hz! And gears are jerky (not > smooth at all). If I move mouse cursor over glxgears window FPS goes up to > 60. > And main problem is that keyboard events are also jerky, i.e. I press key and > system receives press event in 0.1-0.5 sec or so (tested via xev). > > There's no such problem when composition manager is running (i.e. effects are > enabled in KDE) > > Is there any solution for this problem? It really annoys me. I remember seeing a similar problem on an Eee PC I had; it seemed to be timer/interrupt related somehow. If I booted with clocksource=tsc (or maybe it was pit) I got nice smooth animations, but if I used the HPET things were really slow. Does the same work for you? -- Jesse Barnes, Intel Open Source Technology Center _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org http://lists.freedesktop.org/mailman/listinfo/intel-gfx
