Bug#366656: linux-source-2.6.16: Please apply ThinkPad suspend patch from OSDL bug 3022

[Steven Ihde <sihde@cs.stanford.edu>]

Package: linux-source-2.6.16
Severity: normal
Tags: patch

There is a well documented issue where certain ThinkPads with Radeon
video chipsets use too much power while suspended.  The GPU needs
special treatment to put it to sleep, otherwise it continues to burn a
lot of power while suspended (mine lasts just a few hours while
suspended).

For more information see:

http://www.thinkwiki.org/wiki/Problem_with_high_power_drain_in_ACPI_sleep
http://bugme.osdl.org/show_bug.cgi?id=3022

>From the OSDL bug report I obtained the following patch:

http://bugme.osdl.org/attachment.cgi?id=7899&action=view

Which solved the problem for me (mine is a ThinkPad T40, model 2373-94U).

If possible, please include the patch in the stock Debian kernel.
Since it is based on a whitelist of known ThinkPad models it seems to
be pretty safe.

The patch does require using the radeonfb framebuffer console driver;
I accomplished this simply by adding radeonfb to /etc/modules.

Thanks,

Steve


-- System Information:
Debian Release: 3.1
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing'), (1, 'experimental')
Architecture: i386 (i686)
Kernel: Linux 2.6.15-hamachi
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8)