16.04.10, 12:01, "Alex Deucher" <[email protected]>:
> 2010/4/16 : > > > > > > 16.04.10, 10:58, "Alex Deucher" : > > > >> On Fri, Apr 16, 2010 at 10:16 AM, wrote: > >> > > >> > Enabling kms with r600 causes serious problems with vsync. For > example, glxgears with low-res window works just as there is no vsync, and > with large window fps becomes 60, but visible and regular lags appear - > rendering just stop approximately once a second for a sort moment. EXAVSync > options seems has no effect. Also there is following error when starting gl > apps: > >> > > >> > do_wait: drmWaitVBlank returned -1, IRQs don't seem to be working > correctly. > >> > Try adjusting the vblank_mode configuration parameter. > >> > > >> > Adjusting vblank_mode var doesn't work ether. With ums there is no > sync problem. > >> > > >> > >> those options are not supported under kms at the moment. > >> > >> > I'm using Debian Squeeze with mesa 7.7.1-1 and radeon 6.13.0-1. Also i > have two 1920x1080 panels connected via dvi. > >> > >> What kernel are you using? You need 2.6.33 for r6xx+ irq support > >> which is required for vblank irqs. > >> > >> Alex > >> > >> > > > > I've installed 2.6.33, there is indeed no drmWaitVBlank error, but the > problem still exists. > > > > The dri_config vblank options don't work with kms. you need to use > one of the GLX vsync extensions. > > Alex > > Sorry, maybe i've described this bug in misleading way. The problem is not about enabled/disabled vsync, but in that, that by the default with kms there are lags with buggy vsync. And i've find no way to change this buggy vsync state, ether proper enabling or disabling completely. _______________________________________________ xorg-driver-ati mailing list [email protected] http://lists.x.org/mailman/listinfo/xorg-driver-ati
