linux-kernel - Re: [RFT] x86 acpi: normalize segment descriptor register on resume

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Date:	Mon, 14 Jul 2008 09:39:16 +0200
From:	Pavel Machek <pavel@...e.cz>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Andi Kleen <andi@...stfloor.org>,
	"Rafael J. Wysocki" <rjw@...k.pl>,
	Andy Lutomirski <luto@...ealbox.com>,
	Matthew Garrett <mjg59@...f.ucam.org>,
	Ingo Molnar <mingo@...e.hu>,
	public-kernel-testers-u79uwXL29TY76Z2rM5mHXA@...gmane.org,
	ACPI Devel Maling List <linux-acpi@...r.kernel.org>,
	LKML <linux-kernel@...r.kernel.org>,
	pm list <linux-pm@...ts.linux-foundation.org>
Subject: Re: [RFT] x86 acpi: normalize segment descriptor register on resume

On Sun 2008-07-13 21:18:02, H. Peter Anvin wrote:
> H. Peter Anvin wrote:
>>
>> The most likely explanation for this is that the VESA BIOS expects to be 
>> entered in Big Real Mode (*.limit = 0xffffffff) instead of ordinary Real 
>> Mode.  Here is a completely untested patch which changes the segment 
>> descriptors to Big Real Mode instead.  It would be worth testing out.
>>
>
> ... and here is one that actually has a prayer of actually working.

I tried 2.6.26, but it does not seem to be broken here :-(. Thinkpad
x60. So it does not seem _all_ thinkpads have this problem... 

									Pavel


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