how to set screen resolution properly on my Kubuntu-laptop???

[Abdullah Ramazanoglu]

Magyari, Balázs dedi ki:

> Hi everyone,
> I'm new on this mailing list and I don't know if I address my question
> to the right place so please tell me if this question should be
> discussed elsewhere!
> I have a screen resolution problem. I have a Gigabyte W511U Notebook
> with an Intel Alviso 915GM chipset.
> My screen should be 1280x800 at 60Hz. Kde shows 1024x768 at 60Hz.
> I checked the xorg.conf and also made a "dpkg-reconfigure
> xserver-xorg" and there're only the 1280x800 resolutions set so X (or
> what) seems to be configured well.
> Then I found some info searching on the web and installed
> 915resolution (which I found in my repositories suitable for my
> chipset) and configured it. I chose Mode 62 : 1280x800, 32 bits/pixel
> and set it by typing "sudo nano /etc/default/915resolution". The
> values are: MODE=62 XRESO=1280 YRESO=800 BIT=32. I saved the config
> file (or what), and started 915resolution by typing "sudo
> /etc/init.d/915resolution start". Then I tried to access KDE System
> Settings and I still couldn't change my resolution to higher than
> 1024x768. And this is the case as well when I restart computer and
> start 915resolution and try to set Display in System Settings.
> So what did I wrong? Can anybody help me please? How can I set display
> to 1280x800 and how should this sreen resolution be automatically
> enabled for each and every session?
> Thanks for your time and help!
> Regards,
> Balázs

Output of "apt-cache show 915resolution" indicates that...

"If you want to automatically set the resolution on each boot
and before X is launched, see /usr/share/doc/915resolution/README.Debian
for information about configuring the provided initscript."

As I don't have 915resolution package installed, I can't suggest what/how
to configure, but I would suggest reading every file
in /usr/share/doc/915resolution/ directory. Also, "dpkg -L 915resolution"
command will list the files that come with the package. See if there are
other documentation, such as man pages etc.

Assuming everything is set up according to the docs, there may be another
reason for 1024x768, namely, incorrect Modeline entry. For instance, I
know that "via" driver is a bit picky about dot-clock values. It has a
hard coded frequency list of valid dot-clocks, and if your dot-clock in
the Modeline doesn't exactly match one of those valid ones, the "via"
driver simply skips (rejects) that modeline and selects the next best fit
resolution: There are embedded default resolutions defined within Xorg,
even if you don't define them explicitly. So, in such a scenario Xorg may
choose to reject your explicitly defined resolution in favor of some
embedded default one.

This was just an example to various possibilities (Xorg rejecting your
explicit definitions).

-- 
Abdullah Ramazanoglu
aramazan ÄT myrealbox D0T cöm