On Wed, Nov 6, 2013 at 7:12 PM, Robin H. Johnson <robbat2@xxxxxxxxxx> wrote: > On Wed, Nov 06, 2013 at 05:37:11PM -0500, Jerome Glisse wrote: >> On Wed, Nov 06, 2013 at 05:48:55PM +0000, Robin H. Johnson wrote: >> > On Wed, Nov 06, 2013 at 12:16:31PM -0500, Alex Deucher wrote: >> > > On Wed, Nov 6, 2013 at 12:14 PM, Robin H. Johnson <robbat2@xxxxxxxxxx> wrote: >> > > > (Resending to dri-devel because the first one didn't make it). >> > > > >> > > > I apologize for not sending this sooner, but I wanted to be really sure that I >> > > > wasn't introducing the bug elsewhere, and I was lacking time to even narrow it >> > > > down this far. >> > > > >> > > > TL;DR: >> > > > 3.11 kernel does proper modeset for dual 1920x1200 outputs >> > > > 3.12-rc5/rc7 kernel fails to do proper modeset, blank screen after radeon loaded >> > > Can you bisect? >> > I have the next step in the bisect prepared (taking an educated guess >> > and deciding that rc1 was probably also bad, because the changes after >> > rc1 were minimal), but this is my primary box for getting work done; so >> > I haven't rebooted since writing my email and preparing that next >> > kernel. >> Culprit likely d1e3b5564834ea24dee6b364a172365f64865fe5 try reverting that one. > Confirmed as the buggy commit via bisect. > Then reverted in 3.12 and 3.12 suddenly works. I'm not sure how you would even be hitting those code paths as hw i2c is disabled by default and I don't see it enabled on your kernel command line. Alex > > -- > Robin Hugh Johnson > Gentoo Linux: Developer, Trustee & Infrastructure Lead > E-Mail : robbat2@xxxxxxxxxx > GnuPG FP : 11ACBA4F 4778E3F6 E4EDF38E B27B944E 34884E85 _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
