Re: VESA fb console in 2.6.15

[Bill Davidsen <davidsen@tmr.com>]

Antonino A. Daplas wrote:
> Andrew Morton wrote:
> 
>>Damien Wyart <damien.wyart@gmail.com> wrote:
>>
>>>>>I've noticed in several versions of 2.6.15 that VESA fb console
>>>>>seems completely broken : it draws screen in several very slow
>>>>>steps, making the whole display almos unusable. And it crashes
>>>>>*very* often, for example when switching to X. The computer is
>>>>>complety locked, and doesn't even respond to SysRQ.
>>>>>I use vga=0x31B as boot param.
>>>
>>>* "Antonino A. Daplas" <adaplas@gmail.com> [051122 01:28]:
>>>
>>>
>>>>Try booting with:
>>>>vga=0x31b video=vesafb:mtrr:3
>>>
>>>Thanks, this works fine with this param and also without any video=
>>>param. I had a default video=vesafb:mtrr:2 in my grub conf file because
>>>of mtrr problems a few kernel versions earlier (had been discussed
>>>extensively on this list). This setting doesn't work well in 2.6.15.
>>>
>>
>>Does 2.6.15-rc? work OK without any special boot options? (We want it to..)
>>
> 
> 
> From what I understand, before this, he needs video=vesafb:mtrr:2. (Because
> his machine defaults to write-back mtrr instead of write-combining). Now it
> works without any special boot options because I made vesafb default to
> nomtrr because of problems like this and conflicts with X/DRI.
> 
Thank you, I bet this fixes a problem I was having with a system which 
sometimes came up with video problems unless I used an mtrr parameter.
-- 
    -bill davidsen (davidsen@tmr.com)
"The secret to procrastination is to put things off until the
  last possible moment - but no longer"  -me