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SubjectRe: [Intel-gfx] 3.15-rc5: Regression in i915 driver?
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3.15-rc2 seems to be good, 3.15-rc5 seems to be bad. Bisecting this the next days.

Am 12.05.2014 18:54 schrieb Daniel Vetter <daniel@ffwll.ch>:
>
> On Mon, May 12, 2014 at 10:09:54AM +0300, Jani Nikula wrote:
> > On Sun, 11 May 2014, Daniel Vetter <daniel.vetter@ffwll.ch> wrote:
> > > On Sun, May 11, 2014 at 11:02 AM, Dave Airlie <airlied@gmail.com> wrote:
> > >> On 11 May 2014 18:28, Thomas Meyer <thomas@m3y3r.de> wrote:
> > >>> Hi,
> > >>>
> > >>> 3.14.3 works as expected.
> > >>> 3.15-rc5 shows a strange behaviour: When resuming from ram the X server
> > >>> seems to be disfunctional.
> > >>>
> > >>> I see this WARNING in the kernel log before suspend to ram in the early
> > >>> boot process:
> > >
> > > Doesn't ring a bell really.
> > > - Is there anything in dmesg after resume?
> > > - How exactly does X misbehave? Is fbcon still working? Does X
> > > behaviour get restored if you restart X?
> > > - Can you please try to bisect this issue? Note that the backlight
> > > issue might be unrelated to the issues with X misbehaving after
> > > resume. You might need to do a bisect for both if the symptoms don't
> > > agree.
> >
> > I agree the WARNING from i965_enable_backlight() is unrelated. Focus on
> > the other symptoms first.
>
> The backlight backtrace seems to be a genuine new bug. Bisecting it would
> be highly appreciated. Bisecting on the other issue and appending the
> result to the bug Chris quoated should also really be useful - atm we
> don't have any reported who can reproduce this clearly enough to do a
> bisect.
> -Daniel
> --
> Daniel Vetter
> Software Engineer, Intel Corporation
> +41 (0) 79 365 57 48 - http://blog.ffwll.ch
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