Bug#567239: Blank screen on KMS

[Vladimir 'φ-coder/phcoder' Serbinenko]

Vladimir 'φ-coder/phcoder' Serbinenko wrote:
> Hilmar Preusse wrote:
>   
>> On 07.02.10 Choe, Hyun-ho (choehyunho at gmail.com) wrote:
>>
>> Dear Hyun-ho,
>>
>>   
>>     
>>> Maybe the GRUB team already know the problem, and I hope this bug
>>> fixed in the next release.  In the meanwhile, yes, you can change
>>> /etc/grub.d/10_linux like following.
>>>
>>>     
>>>       
>> Many thanks for your input. I fixed my grub.cfg and
>> /etc/grub.d/10_linux too. My box is booting now on VMWare even after
>> updating grub to 1.98~20100128-1.1 . Running update-grub doesn't
>> destroy my grub.cfg .
>>
>> Thanks again,
>>   Hilmar
>>   
>>     
>
> The change which happened is that instead of announcing VBE as such
> grub2 announces it as Generic Framebuffer, value previously used only on
> EFI. When KMS is active kernel should ignore whatever framebuffer
> bootloader has specified. So it looks like this change uncovered a bug
> in Linux.
>   
Actually it seems that there is an inconsistency about how lfb_size is
used on generic and vesa framebuffer. I'm doing few tests right now and
will report back
>   
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>
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-- 
Regards
Vladimir 'φ-coder/phcoder' Serbinenko


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