linux-kernel - Re: "Glove box" BIOS patch causes boot flicker

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Message-ID: <4C9BBDDD.6050803@linux.intel.com>
Date:	Thu, 23 Sep 2010 13:51:41 -0700
From:	"H. Peter Anvin" <hpa@...ux.intel.com>
To:	"H. Peter Anvin" <hpa@...or.com>
CC:	Jan Engelhardt <jengelh@...ozas.de>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>
Subject: Re: "Glove box" BIOS patch causes boot flicker

On 09/23/2010 01:48 PM, H. Peter Anvin wrote:
> On 09/23/2010 01:46 PM, Jan Engelhardt wrote:
>>
>> On Thursday 2010-09-23 22:00, H. Peter Anvin wrote:
>>> On 09/23/2010 11:54 AM, Jan Engelhardt wrote:
>>>> On Wednesday 2010-09-22 02:34, H. Peter Anvin wrote:
>>>>
>>>>> There were some minor bugs (typos) in the conversion to the glove box 
>>>>> coding style. The ones we have found have been fixed, so the first 
>>>>> thing is to try the current mainline or the current tip tree.  
>>>>> Otherwise I would look for issues where either the wrong register is 
>>>>> changed, or something like a variable is changed instead of a field.
>>>>
>>>> I tried v2.6.36-rc5 now, and it looks better. The cursor position is 
>>>> retained as desired. The mode switch is still there, albeit much 
>>>> shorter than it used to be.
>>>
>>> The mode switch was there in the original code.
>>
>> That may very well be so, but there clearly is distinguished behavior 
>> w.r.t. that in 2.6.36 compared to .30.
> 
> Yes, but that caused regressions from the old assembly code.
> 

By the way, if you don't want a mode reset, use "vga=current".

	-hpa

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