linux-kernel - Re: [BUG] rc1 and rc2: Laptop unusable: on boot,screen black instead of native resolution

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Message-ID: <1403882067.16305.124.camel@rzhang1-toshiba>
Date:	Fri, 27 Jun 2014 23:14:27 +0800
From:	Zhang Rui <rui.zhang@...el.com>
To:	Martin Kepplinger <martink@...teo.de>
Cc:	"rjw@...ysocki.net" <rjw@...ysocki.net>,
	"lenb@...nel.org" <lenb@...nel.org>,
	"linux-acpi@...r.kernel.org" <linux-acpi@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	linux-media@...r.kernel.org
Subject: Re: [BUG] rc1 and rc2: Laptop unusable: on boot,screen black
 instead of native resolution

On Mon, 2014-06-23 at 16:46 +0200, Martin Kepplinger wrote:
> Am 2014-06-23 15:14, schrieb Zhang Rui:
> > On Mon, 2014-06-23 at 14:22 +0200, Martin Kepplinger wrote:
> >> Am 2014-06-23 03:10, schrieb Zhang, Rui:
> >>>
> >>>
> >>>> -----Original Message-----
> >>>> From: Martin Kepplinger [mailto:martink@...teo.de]
> >>>> Sent: Sunday, June 22, 2014 10:25 PM
> >>>> To: Zhang, Rui
> >>>> Cc: rjw@...ysocki.net; lenb@...nel.org; linux-acpi@...r.kernel.org;
> >>>> linux-kernel@...r.kernel.org
> >>>> Subject: [BUG] rc1 and rc2: Laptop unusable: on boot,screen black
> >>>> instead of native resolution
> >>>> Importance: High
> >>>>
> >>>> Since 3.16-rc1 my laptop's just goes black while booting, instead of
> >>>> switching to native screen resolution and showing me the starting
> >>>> system there. It's an Acer TravelMate B113 with i915 driver and
> >>>> acer_wmi. It stays black and is unusable.
> >>>>
> > This looks like a duplicate of
> > https://bugzilla.kernel.org/show_bug.cgi?id=78601
> > 
> > thanks,
> > rui
> I'm not sure about that. I have no problem with v3.15 and the screen
> goes black way before a display manager is started. It's right after the
> kernel loaded and usually the screen is set to native resolution.
> 
> Bisect told me aaeb2554337217dfa4eac2fcc90da7be540b9a73 as the first bad
> one. Although, checking that out and running it, works good. not sure if
> that makes sense.
> 
could you please check if the comment in
https://bugzilla.kernel.org/show_bug.cgi?id=78601#c5 solves your problem
or not?

thanks,
rui
> >>>> Do you have other people complain about that? Bisecting didn't lead to
> >>>> a good result. I could be wrong but I somehow suspect the mistake to be
> >>>> somewhere in commit 99678ed73a50d2df8b5f3c801e29e9b7a3e5aa85
> >>>>
> >>> In order to confirm if the problem is introduced by the above commit,
> >>> why not checkout the kernel just before and after this commit and see if the problem exists?
> >>>
> >>> Thanks,
> >>> rui
> >>>
> >> So maybe I was wrong. d27050641e9bc056446deb0814e7ba1aa7911f5a is still
> >> good and aaeb2554337217dfa4eac2fcc90da7be540b9a73 is the fist bad one.
> >> This is a big v4l merge. I added the linux-media list in cc now.
> >>
> >> What could be the problem here?
> >>
> >>>
> >>>> There is nothing unusual in the kernel log.
> >>>>
> >>>> This is quite unusual for an -rc2. Hence my question. I'm happy to test
> >>>> changes.
> >>>>
> >>>>                                      martin
> >>>> --
> >>>> Martin Kepplinger
> >>>> e-mail        martink AT posteo DOT at
> >>>> chat (XMPP)   martink AT jabber DOT at
> >>
> > 
> > 
> 


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