Low resolution problem.

[Lakis]

I just installed the latest Kubuntu for a test drive.

Installation went really smooth and after restarting and logging-in I'm now at the desktop interface.
Seems reaaly good, but I have a resolution problem:
I'm at 1024X768, instead of 1360X768.
Going to KDE settings confirms that 1024X768 is the maximum resolution I can get.

Since my monitor is (an older) TFT one (that is known to actually support only it's native mode), now I have a problem.

Trying to set the needed resolution, I tried xrandr and indeed it successfully sets it to 1360X768.
Only one problem though:
It forgets it at log-off. At next restart I have to repeat the process again!

Does someone knows how to create a proper Xorg.conf, in order my system to "remember" the correct resolution?
Glad for joining you!
L.

[claydoh]

There are multiple ways to get your resolution set, the simplest is to add the command(s) you used in a .xprofile file in your home directory.

Options are listed here
https://wiki.ubuntu.com/X/Config/Res...thods_to_setup

[Lakis]

THANKS claydoh!

I didn't notice the related wiki page.

After a lot of trial and error I made a script (Mode.sh), I set it to executable and (through KDE settings) I set it to autostart.

xrandr --newmode "1360x768_60.00"  84.72  1360 1424 1568 1776  768 769 772 795  -HSync +Vsync
xrandr --addmode VGA-0 "1360x768_60.00"
xrandr --output VGA-0 --mode "1360x768_60.00"

So far so good.
This way when my system starts It goes to the proper (1360x768_60.00) mode.

I still have a problem with VTs (virtual terminals).
When I'm switching to one of them (eg. with ctrl-alt-F1), it continuously brings me a message (something like "ERROR no or invalid EDID") and all VTs are virtually broken.
It's really difficult even to login. When I'm start typing it brings another of those error messages and I have to start over again.

Any way to fix this VT erratic behavior?
TIA!

[oshunluvr]

When you switch to terminals, you're not using X. Your script sets X but not the VT display.

The fix will likely be a command line boot entry in GRUB that will set the proper resolution for the terminals.

In theory this will work;
Edit /etc/default/grub and add

GRUB_GFXMODE=1360x768x24
GRUB_GFXPAYLOAD_LINUX=keep

Run sudo update-grub and reboot. If it doesn't work, you may need to go into the grub menu and delete those entries to be able to boot, then delete them and re-run update-grub.

Alternately, you can try something like:

nomodeset video=uvesafb:mode_option=1360x768-24,mtrr=3,scroll=ywrap

in the linux boot line.

[kontzBern]

It seems to be an issue with your graphics card yet it's weird the resolution in 1024x768 but not 800x600. Look here: https://askubuntu.com/questions/2323...e-on-my-system

[Lakis]

It seems to be an issue with your graphics card yet it's weird the resolution in 1024x768 but not 800x600. Look here: https://askubuntu.com/questions/2323...e-on-my-system

It's radeon (the open source edition. No proprietary version exists any more)

When you switch to terminals, you're not using X. Your script sets X but not the VT display.

The fix will likely be a command line boot entry in GRUB that will set the proper resolution for the terminals.

In theory this will work;
Edit /etc/default/grub and add

GRUB_GFXMODE=1360x768x24
GRUB_GFXPAYLOAD_LINUX=keep

Run sudo update-grub and reboot. If it doesn't work, you may need to go into the grub menu and delete those entries to be able to boot, then delete them and re-run update-grub.

Alternately, you can try something like:

nomodeset video=uvesafb:mode_option=1360x768-24,mtrr=3,scroll=ywrap

in the linux boot line.

I tried them and I experiment with similar nomodeset options, but although they're fixing the VTs problem they're lowering my desktop resolution to 1024X768 (the script doesn't work any more).