how to change resolution ?

black · 11-22-2003, 04:06 AM

hi all~

i set the resolution too high when installing redhat system, and i found nowhere to fix it, any suggestions ?

linksocc · 11-22-2003, 04:22 AM

use ctrl+alt+keypad_minus

trallith · 11-22-2003, 09:55 AM

you set the possible resolutions for your screen in /etc/X11/XF86Config-4 under Section "Screen"

Find the Subsection "Display" for the Colordepth you default to, and just add a the resolution you want at the beginning of the line to make it the default resolution for that depth.

If have multiple resolutions for a given screen you can rotate through them by Ctrl+alt+keypad(-/+)

black · 11-24-2003, 07:10 AM

Quote:

Originally posted by trallith
you set the possible resolutions for your screen in /etc/X11/XF86Config-4 under Section "Screen"

Find the Subsection "Display" for the Colordepth you default to, and just add a the resolution you want at the beginning of the line to make it the default resolution for that depth.

If have multiple resolutions for a given screen you can rotate through them by Ctrl+alt+keypad(-/+)

one thousand thanx for u i'll try that thanx again

black · 11-25-2003, 07:04 AM

gosh i failed...

This is the original "Display" block in that file:

Code:

Subsection "Display"
	Depth	24
	Modes	"1152x864"
EndSubsection

and i tried this:

Code:

Subsection "Display"
	Depth	24
	Modes	"1024x768"
	Modes	"1152x864"
EndSubsection

failed, then i tried this:

Code:

Subsection "Display"
	Depth	24
	Modes	"1024x768"
	Depth	24
	Modes	"1152x864"
EndSubsection

failed again, what on earch should i do ???

jazzyjazz · 11-25-2003, 07:22 AM

Have u tried just to put this ? :

Subsection "Display"
Depth 24
Modes "1024x768"
EndSubsection

U should put modes in one line if u want multiple entries

Like this :

Subsection "Display"
Depth 24
Modes "1024x768" "1152x864"
EndSubsection

Otherwise if u do like u did i think he's gonna try to start too resolution in one time wich causes the failure while in line he switches to the seconds in the first doesnt work

Hope this helps

black · 11-25-2003, 07:37 AM

Quote:

Originally posted by jazzyjazz
Have u tried just to put this ? :

Subsection "Display"
Depth 24
Modes "1024x768"
EndSubsection

U should put modes in one line if u want multiple entries

Like this :

Subsection "Display"
Depth 24
Modes "1024x768" "1152x864"
EndSubsection

Otherwise if u do like u did i think he's gonna try to start too resolution in one time wich causes the failure while in line he switches to the seconds in the first doesnt work

Hope this helps

thanx jazzyjazz i tried that but failed either, after that modification nothing happened even if i grabbed Ctrl+Alt+minus and Ctrl+Alt+plus one hundred times. Or should i run something to make it work ?

trallith · 11-25-2003, 08:10 AM

Look at the top of that section, and make sure
DefaultColorDepth 24

and make sure the line DontZoom is either commented out, or is not present.
What jazzyjazz said should work.

Just to test it, add another mode to that line like "800x600" and then test switching a couple of times.

black · 11-25-2003, 08:37 AM

oh yes i got it, i set this resolution as follows:

Code:

Modes	"800x600" "1024x768" "1152x864"

and after i relogin the system it works, Cheers~~~

but, something looks very strange, ie it defaults to 800x600 and always display part of the whole screen, and the screen scrolls only when mouse reaches one of the edges, how to get a fullscreen plz ???

jazzyjazz · 11-25-2003, 09:24 AM

Well if u have default 800x600 is because it is written in first place in your Modes line

The fact that when u reach the edge of ur screen ur desktop moves could be due to the fact that in ur XF86 config file Virtual desktop is enabled.

Try to find for virtual desktop in ur config file and change the input for that line

black · 11-26-2003, 06:10 AM

Quote:

Originally posted by jazzyjazz
Well if u have default 800x600 is because it is written in first place in your Modes line

The fact that when u reach the edge of ur screen ur desktop moves could be due to the fact that in ur XF86 config file Virtual desktop is enabled.

Try to find for virtual desktop in ur config file and change the input for that line

is that section named virtual desktop ? i coulnd found that item just get a "monitor" section...or is that in other file named XF86Config ?

jazzyjazz · 11-26-2003, 06:44 AM

i'm not sure where exactly it is, but if you open the config file in any text editor, just hit Ctrl+F too look for the word

black · 11-26-2003, 09:03 PM

i searched bot XF86Config and XF86Config-4 but found no "virtual desktop"

twilli227 · 11-26-2003, 10:53 PM

I am running RH9 and kde. If you go to your start icon -> System Settings -> Display -> enter root password, you can change your settings there. After the change, logout and back in and your settings will take affect.

lugoteehalt · 11-27-2003, 11:08 AM

To toggle a sort of wierd, magnified, virtual desktop; which may help, do:
Ctrl-Alt-keypad +.