Monitor problems

MouseMat2004 · 12 Jan 2008 at 20:13

Just installed Ubuntu 7.10, It's having major problems with resolutions. I've used Envy to install the ATI drivers (X1950 PCI-E) and thats all installed and running correctly, well it's enabled in restricted drivers and the desktop effects work fine.

But I'm unable to set a res above 1024x768, It originally set it as a Plug and Play monitor with a max res of 800x600 so I changed that to a LCD 1280x1024 but when it booted all the screen was garbled, had to go back to defaults but the highest monitor I can choose is LCD 1024x768, anything else just defaults back to 1024x768...

Any ideas, I havent messed around with console commands.

Thanks

QuantumXP · 13 Jan 2008 at 01:54

It should possible to get your monitor working correctly once your xorg.conf is setup correctly. Xorg just needs to know a bit more about your system at the moment. If you could provide as much of the following information as possible it would be helpful.

What is the make and model of the monitor?
Do you know the horizontal and vertical refresh rates?
Is the monitors native resolution 1280x1024?
Please post your current /etc/X11/xorg.conf

MouseMat2004 · 13 Jan 2008 at 11:13

Its an Hanns G HX191D, 1280x1024 Native Res @ 75Hz. I'll get into Linux later and grab the xorg.conf file.

MouseMat2004 · 13 Jan 2008 at 11:18

Oh yeah should had said, I had the same monitor running no problems on my old PC (R9700 AGP) before I upgraded. I cant say exactly what it picked it up at, I didnt check because it had the correct resolution and refresh rate.

MouseMat2004 · 13 Jan 2008 at 13:29

ok heres my xorg.conf

# xorg.conf (xorg X Window System server configuration file)
#
# This file was generated by failsafeDexconf, using
# values from the debconf database and some overrides to use vesa mode.
#
# You should use dexconf or another such tool for creating a "real" xorg.conf
# For example:
# sudo dpkg-reconfigure -phigh xserver-xorg
Section "Files"
EndSection

Section "Module"
Load "glx"
Load "GLcore"
Load "v4l"
EndSection

Section "InputDevice"
Identifier "Generic Keyboard"
Driver "kbd"
Option "CoreKeyboard"
Option "XkbRules" "xorg"
Option "XkbModel" "pc105"
Option "XkbLayout" "us"
EndSection

Section "InputDevice"
Identifier "Configured Mouse"
Driver "mouse"
Option "CorePointer"
Option "Device" "/dev/input/mice"
Option "Protocol" "ImPS/2"
Option "ZAxisMapping" "4 5"
Option "Emulate3Buttons" "true"
EndSection

Section "Device"
Identifier "Failsafe Device"
Boardname "vesa"
Busid "PCI:1:0:0"
Driver "fglrx"
Screen 0
Option "VideoOverlay" "on"
Option "OpenGLOverlay" "off"
EndSection

Section "Monitor"
Identifier "Failsafe Monitor"
Vendorname "Generic LCD Display"
Modelname "LCD Panel 1024x768"
Horizsync 31.5-48.0
Vertrefresh 56.0 - 65.0
modeline "640x480@60" 25.2 640 656 752 800 480 490 492 525 -vsync -hsync
modeline "800x600@56" 36.0 800 824 896 1024 600 601 603 625 +hsync +vsync
modeline "800x600@60" 40.0 800 840 968 1056 600 601 605 628 +hsync +vsync
modeline "1024x768@60" 65.0 1024 1048 1184 1344 768 771 777 806 -vsync -hsync
Gamma 1.0
EndSection

Section "Screen"
Identifier "Default Screen"
Device "Failsafe Device"
Monitor "Failsafe Monitor"
Defaultdepth 24
SubSection "Display"
Depth 24
Modes "1024x768@60" "800x600@60" "800x600@56" "640x480@60"
EndSubSection
EndSection

Section "ServerLayout"
Identifier "Default Layout"
screen 0 "Default Screen" 0 0
Inputdevice "Generic Keyboard"
Inputdevice "Configured Mouse"
EndSection
Section "device" #
Identifier "device1"
Boardname "VESA driver (generic)"
Busid "PCI:1:0:1"
Driver "fglrx"
Screen 0
Option "VideoOverlay" "on"
Option "OpenGLOverlay" "off"
EndSection
Section "screen" #
Identifier "screen1"
Device "device1"
Defaultdepth 24
Monitor "monitor1"
EndSection
Section "monitor" #
Identifier "monitor1"
Gamma 1.0
EndSection
Section "ServerFlags"
EndSection
Section "Extensions"
Option "Composite" "Enable"
Option "Composite" "0"
EndSection

QuantumXP · 13 Jan 2008 at 16:48

Make a backup copy of your existing xorg.conf (ie xorg.conf.backup). Then edit the Monitor and Screen sections as listed below in the original file. This should have the correct settings for your monitor. I wasn't able to find official documentation of the Horiz and Vertical frequencies and copied them from another xorg.conf, however I believe them to be correct.

Code:

Section "Monitor"
	Identifier "Failsafe Monitor"
	Vendorname "Generic LCD Display"
	Modelname "LCD Panel"
	HorizSync 28-50
	VertRefresh 43-75
EndSection

Section "Screen"
Identifier "Default Screen"
Device "Failsafe Device"
Monitor "Failsafe Monitor"
DefaultDepth 24
	SubSection "Display"
		Depth 1
		Modes "1280x800" "1024x768" "800x600" "640x480"
	EndSubSection
	SubSection "Display"
		Depth 4
		Modes "1280x800" "1024x768" "800x600" "640x480"
	EndSubSection
	SubSection "Display"
		Depth 8
		Modes "1280x800" "1024x768" "800x600" "640x480"
	EndSubSection
	SubSection "Display"
		Depth 15
		Modes "1280x800" "1024x768" "800x600" "640x480"
	EndSubSection
	SubSection "Display"
		Depth 16
		Modes "1280x800" "1024x768" "800x600" "640x480"
	EndSubSection
	SubSection "Display"
		Depth 24
		Modes "1280x800" "1024x768" "800x600" "640x480"
	EndSubSection
EndSection

MouseMat2004 · 13 Jan 2008 at 17:16

Thanks, I'll try them a bit later on. I assume you meant 1280x1024 not 1280x800? I dont have a widescreen monitor.

QuantumXP · 13 Jan 2008 at 17:34

Yes it should be 1280x1024, that's what you get from copying and pasting.

J1234 · 13 Jan 2008 at 18:48

I had the same problem with Ubuntu last year when I was playing with Linux. Never sorted the problem. Gave up with it in the end

MouseMat2004 · 13 Jan 2008 at 19:04

Damn that didnt work either, all I get is out of range on my monitor but I can hear Ubuntu working in the background.

Linux is great when working but a bugger when its not.

QuantumXP · 13 Jan 2008 at 21:11

If you are still getting out of range then I think its just the horizontal and vertical frequencies that need adjustment. I've had another look but I can't find the exact ones for that monitor. If you have the user manual for it then you might find it listed in there.

NigeyUK · 14 Jan 2008 at 11:02

try this in your xorg.conf .. again backup the old conf just in case.

Section "Monitor"

Identifier "Standardbildschirm"

HorizSync 28-50

VertRefresh 43-75

DisplaySize 433 271

Option "DPMS"

EndSection

Section "Monitor"

Identifier "Hans.G HX191D"

Option "DPMS"

EndSection

DRZ · 14 Jan 2008 at 12:10

I had exactly this problem when I was running Ubuntu on my laptop a year or so back. Your problem is in *** way Gnome and X set the resolutions.

You can set the resolution in your xorg.conf to your hearts content but unless you set the resolution in Gnome to be the same then you will have issues. I never found the file where the Gnome settings were stored but I did manage to be able to navigate to the resolution changer tool through the garbled display and set it in there. Worked perfectly after that!

Irritating I know, but thats how I solved the problem for me. Hope this helps you!

MouseMat2004 · 14 Jan 2008 at 23:33

Well I think I finally bodged it. I basically set the monitor to a CRT 1280x1024 monitor, restarted but could only choose 1024x768 max, then I enabled ATI drivers through Restricted drivers then I was able to select 1280x1024@75Hz. Also got the desktop effects on too.

What a kufuffle...