[ltp] radeonfb sleep patch for kernel 2.6.15

[Noah Dain]

On 6/19/06, Guarded Identity <q507ddf02@sneakemail.com> wrote:
> Hi,
>
> This reminds me of something I was curious about a while back.  At the time, i
> posted my question to a forum with really poor visibility... the "Discussion"
> tab on the wiki
> (http://www.thinkwiki.org/wiki/Talk:Problem_with_high_power_drain_in_ACPI_sleep).
>
> Since my question still stands, I'll quote an excerpt of my post there:
> > I'm wondering what kind of power usage we're really shooting for with the
> > ACPI S3 sleep state. My system right now is eating up around 0.54 Watts
> > when in the S3 state. The /var/log/battery.log file created by the ACPI
> > sleep power drain test script reports "Congratulations, your model seems
> > NOT to be affected" if the power usage is merely below 1.0 Watt. 1.0 Watt
> > seems like a very liberal threshold. Can we get down to 0.2 Watts? Or is 0.5
> > Watts about as good as it gets? I'm definately interested in everyone's
> > experiences, opinions, and statistics.
>
> I don't think that I suffer from the Radeon GPU problem, but it seems that
> with a little tweaking ACPI sleep can be improved.  Maybe someone here knows
> what the real limitation are.
>
> I'm not sure whether the best place to discuss your sleep performance  is on
> this thread or on the wiki, so I'll leave that to you.
>
> - Sukant
>
>
>
> On Sunday 18 June 2006 2:35 pm, Laurent Gilson pumpkin-at-gmx.de |
> LinuxThinkpad| wrote:
> > Hello,
> >
> > > where did you get that patch?
> >
> > http://www.thinkwiki.org/wiki/Problem_with_high_power_drain_in_ACPI_sleep#F
> >or_ThinkPads_with_Radeon_graphic_chips =>
> > http://bugme.osdl.org/attachment.cgi?id=8220&action=view
> >
> > > The most up to date patch is for
> > > 2.6.16, iirc.  I've been grabbing mine from here:
> > > http://bugme.osdl.org/show_bug.cgi?id=3022
> >
> > And luckily the list contains a patch for 2.6.14 which happens to apply
> > cleanly to 2.6.15.
> >
> > Thanks.
> --
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>

similar experience here (r40, radeon 7500).  The patch did wonders for
battery life under S3, but there is still way too much drain going on.

Maybe someone in here can test a similar model thinkpad but one that
does not have an ati chip with the acpi test script.

-- 
Noah Dain
"I don't want to make toys, I want to be a dentist!"