Bug 159791 - radeon power saving for 2373-HU6
radeon power saving for 2373-HU6
Status: CLOSED RAWHIDE
Product: Fedora
Classification: Fedora
Component: kernel (Show other bugs)
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All Linux
medium Severity medium
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Assigned To: Dave Jones
Brian Brock
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Blocks:
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Reported: 2005-06-07 19:57 EDT by David Zeuthen
Modified: 2015-01-04 17:20 EST (History)
5 users (show)

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Doc Type: Bug Fix
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Last Closed: 2005-09-04 19:25:00 EDT
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RHEL 7.3 requirements from Atomic Host:


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Description David Zeuthen 2005-06-07 19:57:21 EDT
Hey, I followed the description at 

 http://www.livejournal.com/users/pjones_code/400.html

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

 http://thinkwiki.org/wiki/ACPI_sleep_power_drain_test_script

says

 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 <davidz@redhat.com> */
+		.ident = "IBM ThinkPad T41 (2373-HU6)",
+		.matches = {
+			DMI_MATCH(DMI_SYS_VENDOR, "IBM"),
+			DMI_MATCH(DMI_PRODUCT_NAME, "2373HU6"),
+		},
+	},

to linux-2.6.11-radeon-backlight.patch. Thanks!
Comment 1 Warren Togami 2005-06-07 22:36:44 EDT
Sweet, this is my model too.  I tested it this morning and it is working great.
Comment 2 Dave Jones 2005-06-08 23:32:14 EDT
I'm puzzled. The script say its not affected, why does it need adding ?
Comment 3 Warren Togami 2005-06-09 02:00:18 EDT
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 10:38:41 EDT
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 16:10:09 EDT
fixed in CVS, will be in tomorrows build.

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