Re: "Glove box" BIOS patch causes boot flicker

From: H. Peter Anvin
Date: Thu Sep 23 2010 - 16:51:45 EST


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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