From mboxrd@z Thu Jan 1 00:00:00 1970 From: Florian Mickler Subject: Re: 2.6.33-rc2: Reported regressions from 2.6.32 Date: Sun, 17 Jan 2010 16:17:26 +0100 Message-ID: <20100117161726.5752b181@schatten.dmk.lab> References: <20100116174821.GA18306@redhat.com> <201001162257.16277.rjw@sisk.pl> <20100117123218.GA3182@redhat.com> <84144f021001170618g708a7c14ob1b222ab1cbdaa20@mail.gmail.com> Mime-Version: 1.0 Content-Transfer-Encoding: QUOTED-PRINTABLE Return-path: Sender: linux-kernel-owner@vger.kernel.org List-ID: Content-Type: text/plain; charset="iso-8859-1" To: linux-kernel@vger.kernel.org Cc: kernel-testers@vger.kernel.org On Sun, 17 Jan 2010 16:18:39 +0200 Pekka Enberg wrote: > On Sun, Jan 17, 2010 at 2:32 PM, Michael S. Tsirkin > wrote: > > On Sat, Jan 16, 2010 at 02:04:07PM -0800, Linus Torvalds wrote: > >> > >> > >> On Sat, 16 Jan 2010, Rafael J. Wysocki wrote: > >> > > >> > > Immediately upon startup, screen is flickering (becomes > >> > > lighter and darker again). The problem occurs with kernels > >> > > 2.6.33-rc1 to 2.6.33-rc4, but not with kernel 2.6.32 and below= =2E > >> > > >> > We've already had several reports like this already. > >> > > >> > Care to review the bugs linked to http://bugzilla.kernel.org/sho= w_bug.cgi?id=3D14885 > >> > and check if none of them matches the problem you describe? > >> > >> I suspect that should be fixed by commit 33814341f22 ("drm/i915: d= isable > >> LVDS downclock by default") that got merged today. > >> > >> So try current -git. > >> > >> =A0 =A0 =A0 =A0 =A0 =A0 =A0 Linus > > > > > > Tested with 6ccf80eb15ccaca4d3f1ab5162b9ded5eecd9971, still get > > the flickering effect. so 33814341f22 does not seem to help. >=20 > Yeah, me too which is why I am doing a git bisect here. What's strang= e > about it is that the first bisection point seems to suggest that the > regression happened _before_ the DRM merge to 2.6.33-rc1. I guess it'= s > possible that the bug is already in 2.6.32 but I've yet to see the > flickering effect. Oh well, back to bisect... >=20 > Pekka on which side of the merge? linus or drm?=20 i.e. it is to be expected to be before the merge, (but on the drm side) so don't get confused... or did i misunderstood the situation?