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Bug 159791 - radeon power saving for 2373-HU6
Summary: radeon power saving for 2373-HU6
Alias: None
Product: Fedora
Classification: Fedora
Component: kernel
Version: rawhide
Hardware: All
OS: Linux
Target Milestone: ---
Assignee: Dave Jones
QA Contact: Brian Brock
Depends On:
TreeView+ depends on / blocked
Reported: 2005-06-07 23:57 UTC by David Zeuthen
Modified: 2015-01-04 22:20 UTC (History)
5 users (show)

Fixed In Version:
Doc Type: Bug Fix
Doc Text:
Clone Of:
Last Closed: 2005-09-04 23:25:00 UTC

Attachments (Terms of Use)

Description David Zeuthen 2005-06-07 23:57:21 UTC
Hey, I followed the description at

and put the radeon_force_sleep in modprobe.conf. With this, this script


 Tue Jun  7 19:28:00 EDT 2005
 before: 21680 mWh
 after: 21410 mWh
 diff: -270 mWh
 seconds: 1239 sec
 result: -784 mW
 Congratulations, your model seems NOT to be affected.

which is sweet. Please add

+	{
+		/* Reported by David Zeuthen <> */
+		.ident = "IBM ThinkPad T41 (2373-HU6)",
+		.matches = {
+		},
+	},

to linux-2.6.11-radeon-backlight.patch. Thanks!

Comment 1 Warren Togami 2005-06-08 02:36:44 UTC
Sweet, this is my model too.  I tested it this morning and it is working great.

Comment 2 Dave Jones 2005-06-09 03:32:14 UTC
I'm puzzled. The script say its not affected, why does it need adding ?

Comment 3 Warren Togami 2005-06-09 06:00:18 UTC
I am not sure what that script does, but testing both with and without this
radeonfb thing is a difference of 5000 to 1000 mWh power consumption in one hour
of sleeping.  It is proven beneficial on this model.

Comment 4 David Zeuthen 2005-06-09 14:38:41 UTC
In response to comment 2: The script was run with radeon_force_sleep=1. Without
that option the power consumption is about 5000 rather than 784. With the
white-list entry I posted we don't need the option :-)

Comment 5 Dave Jones 2005-07-05 20:10:09 UTC
fixed in CVS, will be in tomorrows build.

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