Red Hat Bugzilla – Bug 159791
radeon power saving for 2373-HU6
Last modified: 2015-01-04 17:20:07 EST
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!
Sweet, this is my model too. I tested it this morning and it is working great.
I'm puzzled. The script say its not affected, why does it need adding ?
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.
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 :-)
fixed in CVS, will be in tomorrows build.