[ltp] ACPI S3 power drain and Thinkpad Wiki/radeonfb

[linux-thinkpad@linux-thinkpad.org]

On Thu, 21 Jul 2005, Chris Vanden Berghe wrote:

> Hi,
>
> Thanks for your replies.
>
>> Clark just answered actually (I thought I'd sent this):
>> # modprobe radeonfb radeon_force_sleep=1
>>
>> (you can check available options with modinfo -p radeonfb).
>
> modinfo -p radeonfb gives me:
>
> default_dynclk:int: -2=enable on mobility only,-1=do not change,0=off,1=on
> noaccel:bool: disable acceleration
> nomodeset:bool: disable actual setting of video mode
> mirror:bool: mirror the display to both monitors
> force_dfp:bool: force display to dfp
> ignore_edid:bool: Ignore EDID data when doing DDC probe
> monitor_layout:Specify monitor mapping (like XFree86)
> force_measure_pll:Force measurement of PLL (debug)
> nomtrr:bool: disable use of MTRR registers
> panel_yres:int: set panel yres
> mode_option:Specify resolution as "<xres>x<yres>[-<bpp>][@<refresh>]"
>
> So, the radeon_force_sleep option doesn't seem to be there (standard
> 2.6.12-2 kernel).  I will try this evening if the option has any effect
> on the power consumption...
>
> Thanks,
> Chris.

Yes - it'll need the patch then - bugzilla entry

http://bugzilla.kernel.org/show_bug.cgi?id=3022

Luckily the Fedora Core 4 kernel includes the patch.