Brightness in Gnome

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#1

How do I adjust the brightness in Gnome?

#2

I use gnome long time ago and the feature wasn’t there. I have not use since so can’t help much. Best bet is to just adjust it directly from your monitor control buttons.

#3

The thing is most of the time it is fine, but for some things I have to change it temporariliy and don’t want to have to fiddle with the monitor everytime I want to run somethinbg that needs to be brighter or softer, whatever the case may be.

If there is no way to do it in gnome, then a way to do it for X would bne fine as well.

#4

Well, you can do this with the tools of the proprietary drivers if you’re using them: nvidia-settings (nvidia) and amdcccle (ATI) both can adjust brigthness, contrast and saturation. If you’re on Intel, I don’t know.

#5

Yes was considering installing the proprietary driver for my ATI card, but I would prefer to keep the OS driver at this point if possible. There must be a way to set brightness without using the proprietary drivers.

#6

Yes. There is/used to be a Gnome brightness applet : brightness applet gnome doesn’t work

#7

please try again wrote:

>
> Well, you can do this with the tools of the proprietary drivers if
> you’re using them: nvidia-settings (nvidia) and amdcccle (ATI) both
> can adjust brigthness, contrast and saturation. If you’re on Intel, I
> don’t know.
>
>
There are also gnome-power-manager applets, one of these is for brightness
(Disclaimer: I have no experience with it).

http://library.gnome.org/users/gnome-power-manager/stable/applets-general.html.en

Should also be available in openSUSE.

#8

Found it : zypper info gnome-applets-brightness

#9

I had tried that before starting the thread.

I also tried using System->Configuration->Power Management to do it, but I do not have a brightness slider like shown at the gnome site here:
GNOME Power Manager

#10

silenuz wrote:
> I do not have a brightness slider like shown at the gnome site
> here: ‘GNOME Power Manager’
> (http://projects.gnome.org/gnome-power-manager/gpp.html)

that slider is not available if the graphics driver you are using
doesn’t support adjusting the brightness…

hence another poster mentioned the need for the non-open driver…

–
DenverD
When it comes to chocolate, resistance is futile.
CAVEAT: http://is.gd/bpoMD [posted via NNTP w/openSUSE 10.3]

#11

You can try xgamma it is installed by default.
See man xgamma

You try it in the terminal, typing xgamma will show your current gamma config (default is 1) the range is 1-10

#12

I tried it with my intel card and it works lower than 1 means I can turn my monitor darker by typing a dot before the number like so
xgamma -gamma .7

Hope this help

I am using xfce and kde but I tried it in xfce.

#13

I’ve been using xgamma so far, but it doesn’t always work. Sometimes I’lll say
xgamma gamma 1.3
and it will report a value of 1 in and 1 out instead of changing it. Thus the need for something to change brightness. I now found this:
…:: seize the day ::… :: Using xbrightness to Manage Screen Brightness :: March :: 2009](http://medwinz.blogsome.com/2009/03/29/using-xbrightness-to-manage-screen-brightness/)
However the package links he makes are no longer valid.

#14

It should work, it might be because of a typo in the option gamma it should be like this:

-gamma

notice the - before gamma.

#15

Yes I made typo but what happens sometime is, when you type in the command you get something like this:

xgamma -gamma 1
-> Red 1.500, Green 1.500, Blue 1.500
<- Red 1.000, Green 1.000, Blue 1.000

Notice it shows the in amount and out amount.

Sometimes I’ll try to set it to 1.5 or something and I’ll get:

xgamma -gamma 1.5
-> Red 1.000, Green 1.000, Blue 1.000
<- Red 1.000, Green 1.000, Blue 1.000

Regardless of what the gamma had been set with in the previous command.

#16

It’s beyond my knowledge and can’t help you further.
On my side it works as I type the values.
Possibly there can be a hardware that doesn’t support values outside of a whole number consistently
where you will be stuck in choosing just the whole number 1 to 10.

#17

Well this was a temp solution for me, trying all xbacklight and what not, the xgamma actually worked for me. The app sliders and powersaving stuff didnt but this did =) After 2-3 days of hunting i found a solution in here. The only problem is how do i make this happen everytime the computer starts ? Its my moms laptop and she doesnt really understand all this terminal stuff and commands. So do i need to put the command somewhere or do i make a file somehwere ?

Thanks!

#18

Sorry for double post but i cant edit the post above. To mention the xgamma only changes the rgb colors and actually has nothing to do with the brightness. Even though this solution is better than having that intense brightness i have now, i still need to find why i cant change the brightness on the laptop.

#19

FYI, xgamma is not intended to adjust backlighting.

Anyway, make a simple script with your preferred editor. Then make it executable with ‘chmod +x name_of_your_script’

#! /bin/bash
xgamma -gamma 1.5

Then follow this guide about adding a program at startup. Hope this helps. :slight_smile:

#20

Thanks deano!

Im starting to thinking this problem goes way deeper than i thought from start, i dont get any results with lsmod | grep video, think i have to check what the real big problem is =)
Thanks for the script :wink: It was long ago i had been doing this kind of “cutomazation” in linux =)