intel videocard & brightness in X

[Alex007]

Hi all,

I have laptop with videocard Intel Corporation Mobile GM965/GL960 Integrated Graphics Controller (rev 03).

When X window system start or I go to the console and return to X or when just screensaver runs, the brightness become set to lowest level.

What should I do to remove this feature?

[nowshining]

Re: intel videocard & brightness in X

it may be a bug??

u can try:

sudo kate /etc/X11/xorg.conf

or in terminal

sudo nano /etc/X11/xorg.conf

under "Section "Monitor"

right about EndSection

put Gamma 1 1 1

or whatever # u want - the higher the brighter, etc..

logout and back in - then press ctrl + alt + backspace and re-login.

[Alex007]

Re: intel videocard & brightness in X

No. I don't think that the problem is in the Gamma. Because I can return the brightness to normal using the keys or by putting the maximum value to the /proc/acpi/video/.../brightness. (when I read the value from this file it has value 0).

But thanks, I'll try.

[finifly]

Re: intel videocard & brightness in X

I was having this issue as well. What kernel are you using? Use the command uname -r to find out.

I found that with the kernels 2.6.24-17-generic and 2.6.24-19-generic I was getting this brightness issue and I have an Intel graphics card (it happened with VirtualBox too).

I had no brightness issues with 2.6.24-18-generic. So you may want to try that.

[Alex007]

Re: intel videocard & brightness in X

I use 2.6.24-19-server kernel (I have 4G memory and generic can't detect all 4G)

OK. Thanks. I'll try to install 2.6.24-18. Unfortunately I can test this only in my evening.

[Alex007]

Re: intel videocard & brightness in X

Unfortunately, the brightness issue is still here with 2.6.24-18-server kernel

[toad]

Re: intel videocard & brightness in X

Have you checked the Ubuntu forum about this? There is a lot more people using that gnome thing than kubuntu and your issue does not seem to have anything to do with kde or gnome.

See what you find there, if we cannot help you solve the problem...

[Alex007]

Re: intel videocard & brightness in X

I have searched this problem by google with no good results for my problem. Also when I installed openSuSe 11.0 I had the same problem with 2.6.25 kernel... But thanks for your advice, I'll ask my question there.

[undoIT]

Re: intel videocard & brightness in X

Did you ever get this fixed? In case anyone else is having this issue, there is a work around:

kdesudo kate /etc/modprobe.d/blacklist

add the following line, save and restart X (Ctrl Alt Backspace):

blacklist video

I found this on the Ubuntu forums awhile back and it works for me in both Ubuntu and Kubuntu. It fixes both the non-granular brightness adjustment and the brightness resetting itself.