On Thu, Nov 7, 2013 at 11:52 AM, Alex Deucher <alexdeucher at gmail.com> wrote:
> On Wed, Nov 6, 2013 at 7:12 PM, Robin H. Johnson <robbat2 at gentoo.org> > 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 at gentoo.org> 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 > Yep, that was puzzling me too but sometimes the universe just get thing wrongs. Cheers, Jerome > > > > > -- > > Robin Hugh Johnson > > Gentoo Linux: Developer, Trustee & Infrastructure Lead > > E-Mail : robbat2 at gentoo.org > > GnuPG FP : 11ACBA4F 4778E3F6 E4EDF38E B27B944E 34884E85 > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.freedesktop.org/archives/dri-devel/attachments/20131107/faa29642/attachment.html>
