Ubuntu
gnome-power-manager package

Setting screen brightness

Asked by JCarlin

Since updating to Ubuntu 12.04, each time the computer (Samsung N210) is switched off the screen brightness defaults to the rather dim setting. How can I make a brighter setting the default?

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N1ck 7h0m4d4k15 (nicktux) said : 		#1

Hi ,

is this your problem ? https://bugs.launchpad.net/ubuntu/+source/gnome-power-manager/+bug/923940

If yes , then is a bug and you must wait for a fix.

or

we can try a workaround with some commands , until bug fixed.

just let me know .

Thanks

Revision history for this message
JCarlin (jcarlin) said : 		#2

Thank you, Nik, yes I believe that is the problem. I can reset it every
time I log on - in an ideal world I shouldn't need to! I will await a
fix.

On Mon, 2012-09-10 at 14:15 +0000, NikTh wrote:

> Your question #208155 on Ubuntu changed:
> https:��answers.launchpad.net�ubuntu�+question�208155
>
> Status: Open => Answered
>
> NikTh proposed the following answer:
> Hi ,
>
> is this your problem ? https:��bugs.launchpad.net�ubuntu�+source�gnome-
> power-manager�+bug�923940
>
> If yes , then is a bug and you must wait for a fix.
>
> or
>
> we can try a workaround with some commands , until bug fixed.
>
> just let me know .
>
> Thanks
>

Revision history for this message
actionparsnip (andrew-woodhead666) said : 		#3

Try:
gksudo gedit /etc/default/grub; sudo update-grub

Find:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"

Change it to:
GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor"

Save the new file and close gedit. Reboot to test

Revision history for this message
actionparsnip (andrew-woodhead666) said : 		#4

Also run:

gksudo gedit /etc/rc.local

Add this line ABOVE the 'exit 0' line:

setpci -s 00:02.0 F4.B=00

Save the new file, close gedit then run:

sudo /etc/rc.local

HTH

Revision history for this message
N1ck 7h0m4d4k15 (nicktux) said : 		#5

On 09/10/2012 05:56 PM, actionparsnip wrote:
> Question #208155 on Ubuntu changed:
> https://answers.launchpad.net/ubuntu/+question/208155
>
> actionparsnip proposed the following answer:
> Also run:
>
> gksudo gedit /etc/rc.local
>
> Add this line ABOVE the 'exit 0' line:
>
> setpci -s 00:02.0 F4.B=00
>
> Save the new file, close gedit then run:
>
> sudo /etc/rc.local
>
> HTH
>
 Hi ,
@actionparsnip moved straight away to the workaround . :)

Follow the workaround that @actionparsnip provided . Hopefully will work.

Thanks

Revision history for this message
JCarlin (jcarlin) said : 		#6

Thank you, but where do I start??? What do you mean, try gksudo? Try it
where? And I don't know where to look for GRUB. I just want a box on
the brightness settings page which says "keep this setting as
default"...
Oh dear, perhaps I should have stayed with microsoft...

On Mon, 2012-09-10 at 14:56 +0000, actionparsnip wrote:

> Your question #208155 on Ubuntu changed:
> https:��answers.launchpad.net�ubuntu�+question�208155
>
> Status: Open => Answered
>
> actionparsnip proposed the following answer:
> Try:
> gksudo gedit �etc�default�grub; sudo update-grub
>
> Find:
> GRUB_CMDLINE_LINUX_DEFAULT="quiet splash"
>
> Change it to:
> GRUB_CMDLINE_LINUX_DEFAULT="quiet splash acpi_backlight=vendor"
>
> Save the new file and close gedit. Reboot to test
>

Revision history for this message
actionparsnip (andrew-woodhead666) said : 		#7

Press CTRL+ALT+T and you can run the commands

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