Setting X's resolution by hand

How can I set X's resolution by hand.

I tried erasing the lower than "1024x768" resolutions from the xorg.conf file.... but it didn't work. I keep getting a lousy 640x480 resolution. :'(

I could not figure out......setting by Hand means....Maybe that means setting it manually!

But, if you are trying to change the Resolution of your screen, you may find an option at

System --> preferences --> Screen Resolution.

That should cure your problem.

Or do you mean manually edit /etc/X11/xorg.conf to include the desired resolution?

I mean actually editing the file. I'm not able to start my gnome session (it's another question thread here.... take a look )

Not being able to start your Gnome session is different from changing your resolution. Contrary to public belief, one doesn't change the resolution by merely (as would seem intuitive to do) adding in a resolution such as 1024 x 768 as an option. The HorizSync and VertRefresh ranges in the /etc/X11/xorg.conf file have to be correct for your monitor.

Oh, I see. Now we're talking!

Are there reasonable values I could use? or is there a place where I can find out? The monitor is a HP 5500.

You can get a lot of information about the specifications of your monitor, in the Monitor Manual, if you have it.

I tried to search the Internet about the specifications of your monitor.
HP 5500
They said it was a printer!!!


Are you sure you have provided the correct Monitor Model?

Try these links out

HP Monitors Specifications Page

HP Official Site

The HP official Site had drivers, but not the specifications.

Well, that's what the front of the monitor sais. I'll take a closer look tomorrow (I mean, this morning) at the office.

Originally posted by aysiu Not being able to start your Gnome session is different from changing your resolution. Contrary to public belief, one doesn't change the resolution by merely (as would seem intuitive to do) adding in a resolution such as 1024 x 768 as an option. The HorizSync and VertRefresh ranges in the /etc/X11/xorg.conf file have to be correct for your monitor.

I was fooling around with my laptop (800x600) yesterday - in Windows, if I set the resolution to a higher number, I can just scroll around the screen (and get a larger VNC window on my main machine) -- but Linux failed to start X - something about the resolution out of range. I would then assume I have to edit the /etc/X11/xorg.conf or X86Free.conf (Mandriva)...

Yep. Like AYSIU said, the Sync Ranges are crucial to the correct operation of the X Windows enviroment. Simply do as already been said:

LinuxBox:# emacs /etc/X11/xorg.conf

Hope that Helps,
aratis

I have been working remotely from my desktop... but as soon as I get to sit in front of the computer, I'll be feeding you back.

In the Future: it might be a good idea to make a backup of your original "xorg.conf" directly after installing the OS. Before you install a graphics driver. Simply do the following:

LinuxBox:$ su root
pass: *****
LinuxBox:# cp /etc/X11/xorg.conf /etc/X11/xorg.conf_old

Oh, don't worry about that. If I were to make big changes on the file, I'd certainly do it. Thanks for worrying anyway!