Hi Michal, Here is what I get, but I'm not sure it confirms my earlier observation:
$ cat /proc/acpi/battery/*/state present: yes capacity state: ok charging state: discharging present rate: 18885 mW remaining capacity: 52950 mWh present voltage: 15480 mV $ echo '\_SB.PCI0.PEG1.GFX0._OFF' > /proc/acpi/call $ cat /proc/acpi/battery/*/state present: yes capacity state: ok charging state: discharging present rate: 11310 mW remaining capacity: 52110 mWh present voltage: 15583 mV I waited about four minutes after turning the card off. I was measuring the time savings before by depending on gnome-power-manager. That is probably a mistake. :-/ Hope this help. - Pete On 6 April 2011 12:54, Michal Kottman <[email protected]> wrote: > On Wed, 2011-04-06 at 11:20 +0100, Pete Goodall wrote: >> Hi all, >> >> So I checked out the latest acpi_call from git, ran make and inserted >> the module. When I run the test_off.sh script I find a method that >> works. However, my battery time remaining goes *down* not up. I also >> have a modified version of the script that basically only tries the >> method that worked for my laptop (\_SB.PCI0.PEG1.GFX0._OFF) and I >> replace OFF with ON. Afaict this will turn the discrete graphics back >> on. When I do this my battery life now shows an additional two hours >> remaining. >> >> This makes no sense to me, so I'm wondering if I'm misunderstanding >> the purpose of the script. I thought this script was designed to turn >> off the discrete graphics chip so I had less battery drain. However, >> from this testing it seems I get more battery drain when it is off. >> Am I wrong? > > This is VERY strange. It seems that the producer your laptop has a sense > of humor. We generally do not know what the methods do (and don't have > the hardware to try it out, that's why we need your help), and expect > they work according to their name. > > In your case, GFX0._OFF, we would expect that it would turn the card off > and the resulting rate would lower. It would be best if you could > provide a listing showing the following commands, to verify your claims: > > $ cat /proc/acpi/battery/*/state > $ echo '\_SB.PCI0.PEG1.GFX0._OFF' > /proc/acpi/call > > ... wait for a while ... > > $ cat /proc/acpi/battery/*/state > > If it really turns out that _OFF uses more power, then we'll change the > call to _ON :) > > > _______________________________________________ > Mailing list: https://launchpad.net/~hybrid-graphics-linux > Post to : [email protected] > Unsubscribe : https://launchpad.net/~hybrid-graphics-linux > More help : https://help.launchpad.net/ListHelp > -- Pete Goodall <[email protected]> _______________________________________________ Mailing list: https://launchpad.net/~hybrid-graphics-linux Post to : [email protected] Unsubscribe : https://launchpad.net/~hybrid-graphics-linux More help : https://help.launchpad.net/ListHelp
