linux-kernel - Re: [3/3] 2.6.21-rc6: known regressions

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Message-Id: <1176515823.4807.7.camel@daplas>
Date:	Sat, 14 Apr 2007 09:57:03 +0800
From:	"Antonino A. Daplas" <adaplas@...il.com>
To:	Adrian Bunk <bunk@...sta.de>
Cc:	Linus Torvalds <torvalds@...ux-foundation.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	pavel@...e.cz, linux-pm@...ts.osdl.org,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Marcus Better <marcus@...ter.se>,
	James Simmons <jsimmons@...radead.org>,
	Ingo Molnar <mingo@...e.hu>
Subject: Re: [3/3] 2.6.21-rc6: known regressions

On Sat, 2007-04-14 at 02:38 +0200, Adrian Bunk wrote:
> This email lists some known regressions in Linus' tree compared to 2.6.20.
> 
> If you find your name in the Cc header, you are either submitter of one
> of the bugs, maintainer of an affectected subsystem or driver, a patch
> of you caused a breakage or I'm considering you in any other way
> possibly involved with one or more of these issues.
> 
> Due to the huge amount of recipients, please trim the Cc when answering.
> 
> 
> Subject    : resume from RAM corrupts vesafb console
> References : http://lkml.org/lkml/2007/3/26/76
> Submitter  : Marcus Better <marcus@...ter.se>
> Handled-By : Pavel Machek <pavel@....cz>
> Status     : problem is being debugged
> 
> 
Hi Marcus,

A screen with blinking green blocks implies that your display is in text
mode, not in graphics mode.  I don't know what options you are using,
but have you tried using:

acpi_sleep=s3_mode

If the above does not work, also try

acpi_sleep=s3_bios,s3_mode

If it is still not working, you can add this to your suspend script:

vbetool vbemode set <VESA mode ID>

where VESA mode ID = "vga=" value - 512 (0x200)

Tony

PS: If your BIOS setup has an option to re-POST the graphics card on
resume, that is a big help.

Tony


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