lkml.org 
[lkml]   [2005]   [Feb]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
From
SubjectRe: [ACPI] Call for help: list of machines with working S3
On Thu, Feb 17, 2005 at 01:16:45AM -0500, Len Brown wrote:

> Pavel,
> I think that it is the BIOS' job on S3-suspend
> to save the video mode. On S3-resume the BIOS should
> re-POST and restore the video mode.

Should.

But this definitely is not the case on about 80+% of notebooks.

You can save the video state through VESA VBE, and restore it on resume,
but if the BIOS didn't re-POST the video, this will often fail.

> While Linux's X drivers may be able to handle the case
> where X is running -- that doesn't help us with the
> cases where X is not running (a case that Windows
> presumably does not have).
>
> Besides updated X drivers, which may have complicated
> restore routines for complicated modes, all the other
> techniques for restoring video from Linux are
> hit/miss workarounds for broken platforms.
>
> To completely solve the Linux S3 video restore issue,
> we need to push the platform and BIOS vendors.

That's correct.

> What am I missing?

I'm not sure if you can push the whole industry at once.

--
Vojtech Pavlik
SuSE Labs, SuSE CR
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/

\
 
 \ /
  Last update: 2005-03-22 14:10    [W:0.225 / U:0.540 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site