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Open Up Your Terminal
Install i8xx,i9xx display driver
In order to use higher resolution install updated Intel i8xx, i9xx display driver. It is provided by a package called xserver-xorg-video-intel. This package provides the driver for the Intel i8xx and i9xx family of chipsets, including i810, i815, i830, i845, i855, i865, i915, and i945 series chips.
sudo apt-get install xserver-xorg-video-intel
When this is finished reboot your system
Now you need to go to System>Preferences>Screen Resolution to see all of the new options.
The new Intel driver is still in experimental state. I tried it before, and it did not work. I recommend installing 915resolution instead. From the 915resolution site:
Do a simple
sudo aptitude install 915resolutionrestart, and it should be working. If it doesn’t, you can check the 915resolution site for help (you might have to edit xorg.conf): http://www.geocities.com/stomljen/
I’m using 915resolution to setup the widescreen mode in my laptop, but i have trouble setting different refresh rates for the external VGA output. I have tested the xorg-video-intel driver, but when i set a lower screen resolution, the Xserver is restarted by itself and the screen geometry remains the same.
915resolution worked for me as well at 60 Hz. I have no display problems on a Gateway MX8738 widescreen laptop running three operating systems Ubuntu, Vista and XP Professional.
I have manually added new resolution 1920×1080 for my widescreen lcd and it worked, but the resolution is not permanent and is lost after reboot.
sudo xrandr –newmode 1920×1080 220.75 1920 2064 2264 2608 1080 1083 1088 1130 -hsync +vsync
sudo xrandr –addmode VGA1 1920×1080
It seems to finally work in 10.04 as of Alpha-2 for me. Perhaps I had the option prior to 10.04 but I had not noticed the “mirror option” before. Now I can control both monitors independently through the Display option via software rather than try my luck at the shortcut keys through the hardware and hope for the best.