Re: 2.6.32 regression (bisected): Video tearing/glitching with T400laptops

[Jesse Barnes]

 On Mon, 19 Oct 2009 10:04:37 +0900
Jesse Barnes <jbarnes@xxxxxxxxxxxxxxxx> wrote:

> On Thu, 15 Oct 2009 00:02:04 -0400
> Theodore Tso <tytso@xxxxxxx> wrote:
> 
> > On Wed, Oct 14, 2009 at 10:26:45PM -0400, Theodore Tso wrote:
> > > 
> > > If I need to live with a display glitch every 5-10 minutes or so
> > > to get better power savings, I'll take it....
> > > 
> > 
> > While mail reading and composing responses in a tty based mail
> > reader (mutt/emacs -nw), I'm seeing display glitches every 3-5
> > minutes.  Each time it's quite minor so it's the sort of thing
> > which is definitely "blink at the wrong time and you'll miss it".
> > 
> > Being a battery lifetime freak, I'll definitely take the tradeoff,
> > but given that it occurs even when I'm plugged into AC mains, I
> > could see some users being annoyed by it, and I could see them
> > wanting to be able to switch off the feature when they are on AC,
> > if we find a complete fix.
> 
> Ok, hopefully this is the "correct" patch.  It works for me, can you
> give it a try?

Here's an even more "final" patchset with some spurious hunks removed.

Thanks,
Jesse