KMS/radeon regression: failure to set modes on CEDAR & TAHITI; v3.11 vs 3.12-rc5/rc7

[Jerome Glisse]

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.

Cheers,
Jerome

> 
> -- 
> Robin Hugh Johnson
> Gentoo Linux: Developer, Trustee & Infrastructure Lead
> E-Mail     : robbat2 at gentoo.org
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