Change Resolution through command prompt

[simay]

I was messing around with Mandriva 10.2 a few days ago, and I accidently set the resoulution too high for my monitor. Is there any way i can change the resolution through the failsafe mode command prompt?

any help would be appreciated

simay

[budman7]

You will have to edit the xorg.conf file.
Use your fav text editor and open it. I will explain how to do this with nano and vi.

As root

vi /etc/X11/xorg.conf
scroll down to the resolution settings, they are near the end
delete the offending resolution by backspacing through it or putting the cursor on the first character and holding down the delete button.
Then hit ZZ (must be capital z's) to quit and save your work.
Reboot

nano /etc/X11/xorg.conf
do the same as in vi to delete the offending resolution,
hit Ctrl and x and answer the prompts.
reboot.

If your OS uses xfree86, I believe it is the XF86Config file that you will need to edit.

[simay]

bud,
thanks for the response.
i did what you said, edited my xorg.conf file, saved, and rebooted. now, when i do a normal start, mandriva goes to a command prompt instead of a gui logon like it normally would.

do i need to specify a resolution in the xorg.conf file?
if so, how do i? i tried when i was editing the xorg file, but both sets of my number keys seemed to be disabled.

if not, how might i bet mandriva to do a graphical logon?


simay

[budman7]

You didn't delete all of the resolutions in there did you?
Just the ones that were to high.

"xorgconfig" will write a new xorg.conf file, you will have to answer some questions about your computer.
Monitor-vertical and horizontal refresh rates. They can be found on the back of your monitor.
video card-what kind is it and how much memory does it have
keyboard-what type is it
mouse-Don't settle for the default type, try /dev/input/mice or /dev/psaux(if it is USB)

Try "startx"
In order for this to work you may need to create a .xinitrc file.
su into root
nano .xinitrc
put one line in this file "startkde", without the "
save and exit

[simay]

i did delete all of them, they were all too high.

im going to try what you suggested as soon as i have time

>"xorgconfig" will write a new xorg.conf file
do i just type xorgconfig or startx into the command prompt and answer the questions?

thanks
simay

[psic]

i did delete all of them, they were all too high.

im going to try what you suggested as soon as i have time

>"xorgconfig" will write a new xorg.conf file
do i just type xorgconfig or startx into the command prompt and answer the questions?

thanks
simay

xorgconfig

[budman7]

Yes, you do need to specify some resolutions.
1024x768 or 800x600 should not be to high.

[sabin]

Another solution if you cannot find the frequencies for vertical and horizontal refresh, etcetera, etetera, but it will take longer (but it will be in graphical mode) : reboot with your Mandriva installation DVD. Chose "upgrade". Wait the usual steps (it won't destroy your system, only update what you chose to update), and then in the summary of the upgrades, chose to respecify again your graphical card and your monitor.