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Re: Power Usage

 

Unfortunately I don't have any good news to share. This is what went down:

- Removed nvidia drivers
- Changed IDE to Enhanced
After these changes the machine hung on boot (in graphical mode)

- Changed back to Compatibility
Same result as with Enhanced. At this point I was affraid to be
completely locked out but ...

- Booted up in Recovery mode
- In text mode I renamed the old xorg.conf and used a 'basic' one that
had a failsafe suffix
After this everything went normal during boot, resolution was messed
up but at least I had a graphical screen. After following the acpi
instructions, I kept seeing both cards when running 'lspci |grep VGA'
but power consumption was under 10W for the most part (??).

 When reading the instructions here
http://ubuntuforums.org/showthread.php?t=1366605&highlight=hybrid+nvidia+off&page=10
, I got stuck on step 3 because I didn't know where 'asus_nvidia.ko'
came from. Then I realized I had lost control of the screen brightness
which I previously had by using the battery applet.

 In summary, I'm either too dumb to make this work or my system has
been modified to the point where the method that works for others
doesn't for me. I have invested enough time on this and I'm now
willing to sacrifice some battery time in exchange for sanity, I agree
with a user named Nicias from the Ubuntuforums:

This is what I mean by "solved"
    * I can chose which card to use at boot time in the bios.
    * I don't have to do anything with config files
    * The other card is powered down
    * the brightness keys work for both cards (also I have an init.d
service that manages brightness)
    * all of this survives hibernate.

 Thanks to everyone that chimed in. I will continue using NVIDIA until
switching is as simple as it is in Win7 on this very machine (one
button click).

Have a nice weekend, everyone.



On Sat, Oct 16, 2010 at 11:07 AM, Marco Rofei <marco.rofei@xxxxxxxxx> wrote:
>
> Marco, thanks for your reply. There is a difference so I will try to pursue switching off NVIDIA. How did you manage to get only Intel running?
>
> Regards
>
> You have to try the acpi_call method. HerMarco Rofei <marco.rofei@xxxxxxxxx>e you can find instructions.
> Before trying acpi_call uninstall nvidia drivers, and, in bios, go back to enhanced sata mode, then reboot.
>
> If not, the acpi_call will turn off your nvidia card and you got a black screen.
>
> You should find, running ./test.sh, that
> echo "\_SB.PCI0.P0P1.VGA._OFF" > /proc/acpi/call
> works.
>
> Use Powertop, or
> grep rate /proc/acpi/battery/BAT0/state
> to check battery consumption.
>
> You should have about 8.500~9.000mW
>
> MR



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