On Sun, May 26, 2013 at 5:38 PM, Gard Spreemann <gspreemann@xxxxxxxxx> wrote: > Hi, > > If I should contact a list instead of you directly, I sincerely apologize! You should have cc'ed relevant lists at least ;-) Fixed up. > After a recent kernel upgrade, I found that my system (using Nouveau) would > stutter whenever eDP-1 was turned off. That display being turned off apparently > causes repeated EDID retrievals and failed checksums. I did a git bisect which > lead me to > *** > commit 69787f7da6b2adc4054357a661aaa1701a9ca76f > Author: Daniel Vetter <daniel.vetter@xxxxxxxx> > Date: Tue Oct 23 18:23:34 2012 +0000 > > drm: run the hpd irq event code directly > > All drivers already have a work item to run the hpd code, so we don't > need to launch a new one in the helper code. Dave Airlie mentioned > that the cancel+re-queue might paper over DP related hpd ping-pongs, > hence why this is split out. > > Signed-off-by: Daniel Vetter <daniel.vetter@xxxxxxxx> > Reviewed-by: Alex Deucher <alexander.deucher@xxxxxxx> > Signed-off-by: Dave Airlie <airlied@xxxxxxxxxx> > *** > as the first bad commit, and I was advised to contact you as well as file a bug > with the Nouveau project [1]. > > I don't have enough insight into the code in question to understand the > problem, but your discussion on April 6 [2] seems relevant. > > Please let me know if there's anything I can do to help. > > [1] https://bugs.freedesktop.org/show_bug.cgi?id=64858 > [2] https://patchwork.kernel.org/patch/2402211/ My guess is that you've worked around these edid stalls with drm_kms_helper.poll=0 and the above commit breaks that w/a. That patch was shot down unfortunately. If you can't reproduce these stalls on older kernels when removing the poll=0 option, then something else broke. -Daniel -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
