Re: [Intel-gfx] i835GM flicker on panning
On Mon, Sep 23, 2013 at 12:21:30PM +0200, Thomas Richter wrote: > Hi folks, > > >Can you please test with > > > >Option "LinearFramebuffer" "true"? > > > >Thanks, Daniel > > Tested again. Yes, indeed, LinearFramebuffer does make a difference. > Without it, panning to the right causes flicker, with it, moving the > mouse to the right - panning right (thus scrolling the screen to the > left) causes no flicker. Scrolling into the other direction always > causes flicker, no matter what. Hm, this is something I've completely missed thus far: Does the flicker only happen when you pan, or also when the image is at a stable postion (but not aligned to one of the safe boundaries you've identified)? Thanks, Daniel -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
Re: [Intel-gfx] i835GM flicker on panning
On Sun, Sep 22, 2013 at 10:03:21PM +0200, Daniel Vetter wrote: > Hm, that sounds a bit more like the ddx is having fun with rendering. > Have you tried switching the backed from to either SNA or UXA? Also > adding relevant mailing lists ... If it was just the ddx, you would observe the same tearing with the rotated setup as well. The question here would be whether it is tearing or flicker? Tearing would just be the usual frontbuffer rendering artifact. However, flicker could be misrendering of a DRI client (seeing the backbuffer etc) or a clock timing issue (pipe underruns and whatnot). Using a rotated framebuffer would disable pageflipping, and prevent the historically common glitches when flipping. (Historically? That's hysterical!) -Chris -- Chris Wilson, Intel Open Source Technology Centre -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
