How to set the resolution?

Xzander · 10-24-2007, 05:20 PM

Hi,

I am using Debian 4.0r1 in VirtualBox with gnome. I have three resolutions available in Desktop/Preference/SetResolution: 1024x768, 800x600 and 640x480. I am currently at 1024x768. I want to downgrade to 800x600. I select 800x600. 61 Hz is selt and nothing else is available. I press apply. X server restarts and I have to login again BUT, the resolution is still at 1024x768. I have removed display modes in 'Screen' section of xorg.conf but it seems to have no effect as 640x480 is still available:

Code:

Section "Files"
	FontPath	"/usr/share/fonts/X11/misc"
	FontPath	"/usr/X11R6/lib/X11/fonts/misc"
	FontPath	"/usr/share/fonts/X11/cyrillic"
	FontPath	"/usr/X11R6/lib/X11/fonts/cyrillic"
	FontPath	"/usr/share/fonts/X11/100dpi/:unscaled"
	FontPath	"/usr/X11R6/lib/X11/fonts/100dpi/:unscaled"
	FontPath	"/usr/share/fonts/X11/75dpi/:unscaled"
	FontPath	"/usr/X11R6/lib/X11/fonts/75dpi/:unscaled"
	FontPath	"/usr/share/fonts/X11/Type1"
	FontPath	"/usr/X11R6/lib/X11/fonts/Type1"
	FontPath	"/usr/share/fonts/X11/100dpi"
	FontPath	"/usr/X11R6/lib/X11/fonts/100dpi"
	FontPath	"/usr/share/fonts/X11/75dpi"
	FontPath	"/usr/X11R6/lib/X11/fonts/75dpi"
	# path to defoma fonts
	FontPath	"/var/lib/defoma/x-ttcidfont-conf.d/dirs/TrueType"
EndSection

Section "Module"
	Load	"i2c"
	Load	"bitmap"
	Load	"ddc"
	Load	"dri"
	Load	"extmod"
	Load	"freetype"
	Load	"glx"
	Load	"int10"
	Load	"vbe"
EndSection
Section "InputDevice"
	Identifier	"Generic Keyboard"
	Driver		"kbd"
	Option		"CoreKeyboard"
	Option		"XkbRules"	"xorg"
	Option		"XkbModel"	"pc105"
	Option		"XkbLayout"	"ca"
EndSection
Section "InputDevice"
	Identifier	"Configured Mouse"
	Driver		"mouse"
	Option		"CorePointer"
	Option		"Device"		"/dev/input/mice"
	Option		"Protocol"		"ImPS/2"
	Option		"Emulate3Buttons"	"true"
EndSection
Section "Device"
	Identifier	"Generic Video Card"
	Driver		"vesa"
	BusID		"PCI:0:2:0"
EndSection
Section "Monitor"
	Identifier	"Generic Monitor"
	Option		"DPMS"
	HorizSync	28-64
	VertRefresh	43-60
EndSection
Section "Screen"
	Identifier	"Default Screen"
	Device		"Generic Video Card"
	Monitor		"Generic Monitor"
	DefaultDepth	16
	SubSection "Display"
		Depth		16
		Modes		"1280x800" "1024x768" "800x600"
	EndSubSection
EndSection
Section "ServerLayout"
	Identifier	"Default Layout"
	Screen		"Default Screen"
	InputDevice	"Generic Keyboard"
	InputDevice	"Configured Mouse"
EndSection
Section "DRI"
	Mode	0666
EndSection

When I login, there's a button 'Actions'. If I choose 'Configure the login manager' and enter my root password, there's 'Configure X Server...' under security tab. The server name is 'Standard name', the command is '/usr/bin/X -dpi 96 -audit 0' and Launch is 'Greeter'.

Any idea on how to fix it??

Thank's

LlNUX · 10-24-2007, 06:13 PM

what I would try is to reconfigure X server and when it comes to a question which resolution I want I will try pick just one which I want. This works for me.:-)

Code:

or you can try edit config manually which is not alway good idea:
	SubSection "Display"
		Depth		16
		Modes		"1280x800" "1024x768" "800x600"
	EndSubSection

Xzander · 10-25-2007, 07:21 AM

Thank's, i'll try this out.

Xzander · 10-25-2007, 06:27 PM

Didn't work...

Any other idea?

Xzander · 10-26-2007, 06:51 AM

I found the problem! I had to press 'peripherals'->'Install guest additions' in virtual box to add drivers for the virtual video card. Now everyting works ok. For mor informations, just read 'Guest addition' in virtualbox manual.

Thank's