(I posted this in the laptop forum and didn't get any replies so I wondered if I might have picked the wrong forum. Sorry for the repost but I've spent another day looking at the documentation for xorg.conf and web searching and I still can't see what I'm doing wrong)
I have a Dell Inspiron 510m which I'm trying to use with F11. When I start some programs (such as Emacs and the Photo viewer) I get lots of screen corruption. A little digging suggests that this might be because the screen is running at 1024x768 when the native resolution is 1400x1050.
Apparently to make it work I need to run 915resolution so the graphics bios reports the correct resolution. I've added this to a start-up file (which I have done in /etc/rc.d/rc.local) is this correct? Will it be run before X starts?. I hoped the this would make the automaticlly generated xorg.conf work but it didn't so I guess I need to modify the xorg.conf file so the correct resolution is available.
I've installed the system-config-display and used that to set the monitor type to "1400x1050 generic" but I still can't set the resolution to more than 1024x768. I modified what I think is the correct section of the xorg.conf file so that it reads
Viewport 0 0
(my only addition is the Modes line and this is based on the README from 915resolution) but this just makes the screen display only the top left section of a larger display. If I go into "Preferences->Display" then I see that the resolution in the "Display preferences" is still 1024x768. I can't work out how to change this.
Can anybody help? What am I not doing (or what am I doing that I should not!)?
Thanks in advance