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SubjectRe: Bank screen after resume on Dell XPS M1330
Date
On Wednesday 06 of May 2009 20:52:26 Pavel Machek wrote:
> On Wed 2009-05-06 19:55:10, Andrey Borzenkov wrote:
> > On Tuesday 05 of May 2009 23:49:02 Pavel Machek wrote:
> > > On Mon 2009-05-04 06:27:35, Andrey Borzenkov wrote:
> > > > On Sunday 03 of May 2009 15:56:03 Matthew Garrett wrote:
> > > > > On Sun, May 03, 2009 at 03:43:28PM +0400, Andrey Borzenkov
wrote:
> > > > > > On Sunday 03 of May 2009 14:59:32 Matthew Garrett wrote:
> > > > > > > On Sun, May 03, 2009 at 11:11:47AM +0400, Andrey
> > > > > > > Borzenkov
> >
> > wrote:
> > > > > > > > 01:00.0 VGA compatible controller: nVidia Corporation
> > > > > > > > GeForce 8400M GS (rev a1)
> > > > > > >
> > > > > > > We don't know how to reinitialise nvidia graphics
> > > > > > > hardware.
> > > > > >
> > > > > > Just in case - same issue also after resume from
> > > > > > hibernation. I was under impression, that hibernation does
> > > > > > not have these issues as card goes via normal POST routine.
> > > > >
> > > > > Hm. That sounds a bit weirder.
> > > >
> > > > Is it worth further debugging? Anything I can provide?
> > >
> > > Try it with minimum config, init=/bin/bash? Switch to plain vga
> > > console?
> >
> > As stated in my first mail, that is exactly what I started with :)
>
> Ok, ok, and even that failed with hibernation?

You are right, I was not careful when testing. I tested once more with
two different kernels; hibernation works (also in normal init 3) as long
as video settings are the same between suspend and resume. If they
differ (e.g. plain VGA before suspend and frame buffer after) display is
most likely completely garbled (but still is not blank).

Of course, any attempt to switch to X (using nv driver) after resume is
doomed. OTOH *starting* X after resume seems to work.

Sorry for the noise.
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