<div class="gmail_quote">On Thu, Jan 12, 2012 at 17:25, Jesse Barnes <<a href="mailto:jbarnes@virtuousgeek.org">jbarnes@virtuousgeek.org</a>> wrote: <blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> <div class="im">On Thu, 12 Jan 2012 20:08:59 +0100 Vincent Vanackere <<a href="mailto:vincent.vanackere@gmail.com">vincent.vanackere@gmail.com</a>> wrote: > > Thanks for the report... do you also have: > > > > commit 7a4198664d46b87025a64530f1530ab2bea54c19 > > Author: Jesse Barnes <<a href="mailto:jbarnes@virtuousgeek.org">jbarnes@virtuousgeek.org</a>> > > Date: Tue Nov 15 10:28:53 2011 -0800 > > > > drm/i915: don't disable a PCH DPLL that's in use > > > > > > commit d8e70a254d8f2da141006e496a51502b79115e80 > > Author: Jesse Barnes <<a href="mailto:jbarnes@virtuousgeek.org">jbarnes@virtuousgeek.org</a>> > > Date: Tue Nov 15 10:28:54 2011 -0800 > > > > drm/i915: only set the intel_crtc DPMS mode to on if the mode set > > succeeded > > > > in your tree? Those are needed to fix some 3 pipe related bugs. > > > > -- > > Jesse Barnes, Intel Open Source Technology Center > > > </div>> Yes, these commits were present. To double-check I just tested the latest > tip at a429638cac1e5c656818a45aaff78df7b743004e and the problem is still > there. Stefan, you have the same machine? I wonder if it's an eDP config; my t420 here works ok with current bits, but it uses LVDS. </blockquote><div> If you are using eDP, you might be facing <a href="https://bugs.freedesktop.org/show_bug.cgi?id=42263">https://bugs.freedesktop.org/show_bug.cgi?id=42263</a> or <a href="https://bugs.freedesktop.org/show_bug.cgi?id=42278">https://bugs.freedesktop.org/show_bug.cgi?id=42278</a>. Could you try with patch mentioned at <a href="https://bugs.freedesktop.org/show_bug.cgi?id=42263">https://bugs.freedesktop.org/show_bug.cgi?id=42263</a> reverted? </div></div>-- Eugeni Dodonov<a href="http://eugeni.dodonov.net/" target="_blank"> </a>