Thread (2 messages) 2 messages, 2 authors, 2004-10-21

RE: [Linux-fbdev-devel] Re: Generic VESA framebuffer driver and Video card BOOT?

From: Pallipadi, Venkatesh <hidden>
Date: 2004-10-21 23:22:22
Also in: lkml

-----Original Message-----
From: Pavel Machek [mailto:pavel@ucw.cz] 
Sent: Thursday, October 21, 2004 4:00 PM
To: Pallipadi, Venkatesh
Cc: Kendall Bennett; linux-kernel@vger.kernel.org; 
linux-fbdev-devel@lists.sourceforge.net
Subject: Re: [Linux-fbdev-devel] Re: Generic VESA framebuffer 
driver and Video card BOOT?

Hi!
quoted
quoted
The rest of the code you have above seems superfluous to me 
as we have 
quoted
quoted
never needed to do that. Then again we boot the card using the BIOS 
emulator, which is different because it runs within a 
protected machine 
state.

Have you taken a look at the X.org code? They have code in 
there to POST 
the video card also (either using vm86() or the BIOS emulator).
I have done some experiments with this video post stuff.
I think this should be done using x86 emulator rather than doing 
in real mode. The reason being, with an userlevel emulator 
we can call
quoted
it at different times during resume. The current real mode videopost
does 
Actually Ole Rohne has patch that allows you to call real mode any
time you want.
							Pavel
Yes. I tried Ole's patch. That helped on one of my laptops. But, on 
the other one it doesn't work. It goes into real mode but never returns.
Both systems had Radeom 9000M cards, but one with older version of the 
firmware (didn't work) and one with newer version.

IIRC, even Stefan had similar problems with Ole's patch.

Thanks,
Venki
Keyboard shortcuts
hback out one level
jnext message in thread
kprevious message in thread
ldrill in
Escclose help / fold thread tree
?toggle this help