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Old 11-26-08, 12:13 PM   #1
davidtrickett
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Default Nightmare monitor

I am using Ubuntu Hardy, and have onboard Nvidia 6100 graphics. I recently purchased a Samsung 943N monitor, and have been completely unable to get it to work properly in Ubuntu. I have manually edited the xorg.conf file (see attached) but when I start up the system tells me that it can't cope with the monitor/card. Continuing the best resolution I get is 800x600@61Hz, rather than everything from 1280x1024@60 downwards. I have tried to download & install the Nvidia drivers (NVIDIA-Linux-x86-177.82-pkg1.run) but have not had any success - I assume I am doing something wrong but I don't know what!

I also attach the xorg log file.

Can anyone help please - I've spent days trying to sort this & it's driving me nuts!

Thanks
Attached Files
File Type: txt xorg.conf.26_11.txt (1.9 KB, 88 views)
File Type: txt Xorg log.txt (51.3 KB, 89 views)
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Old 11-26-08, 02:40 PM   #2
Cougar81
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Location: Helsinki, Finland
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Default Re: Nightmare monitor

Use this as your xorg.conf (uncomment the modelines if you need them):
Code:
Section "InputDevice"
	Identifier	"Generic Keyboard"
	Driver		"kbd"
	Option		"XkbRules"	"xorg"
	Option		"XkbModel"	"pc105"
	Option		"XkbLayout"	"gb"
EndSection

Section "InputDevice"
	Identifier	"Configured Mouse"
	Driver		"mouse"
EndSection

Section "Device"
	Identifier	"Device0"
	Boardname	"NVIDIA GeForce"
	Busid		"PCI:0:13:0"
	Driver		"nvidia"
	Vendorname	"NVIDIA"
EndSection

Section "Monitor"
	Identifier     "Monitor0"
	VendorName     "Samsung"
	ModelName      "Samsung 943N"
	HorizSync       30.0 - 81.0
	VertRefresh     56.0 - 75.0
#	Modeline "1280x1024" 107.954 1280 1344 1456 1688 1024 1025 1028 1066 +hsync +vsync

#	Modeline "1280x768" 79.545 1280 1360 1488 1664 768 771 778 798 -hsync +vsync

#	Modeline "1024x768" 65.000 1024 1064 1200 1344 768 778 784 806 -hsync -vsync

#	Modeline "800x600" 40.000 800 856 984 1056 600 601 605 628 +hsync +vsync
	Option         "DPMS"
EndSection

Section "Screen"
	Identifier	"Default Screen"
	Device		"Device0"
	Monitor		"Monitor0"
	Defaultdepth	24
	SubSection "Display"
		Depth	24
		Virtual	1280	1024
		Modes		"1280x1024@60" "1024x768@60" "800x600@60" "640x480@60" "1280x768@60"
	EndSubSection
EndSection

Section "ServerLayout"
	Identifier	"Default Layout"
	Screen 0	"Default Screen" 0 0
EndSection

Section "Module"
	Load		"extmod"
	Load		"freetype"
	Load		"glx"
	Load		"v4l"
EndSection

Section "ServerFlags"
EndSection
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Old 11-26-08, 03:27 PM   #3
davidtrickett
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Posts: 4
Default Re: Nightmare monitor

Cougar81

Thanks for your response. I copied & pasted your code into xorg.conf but unfortunately it made no difference - still with 800x600@61. While booting I get the "Ubuntu is running in low graphics mode" screen - if I select configure it offers me a "Plug 'n' Play" monitor 800x600@61, "vesa- Generic VESA compliant video card". I've tried both with & without the modelines (which were derived from PowerStrip). Any further thoughts?
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Old 11-27-08, 01:12 AM   #4
slanbarn
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Location: Sweden
Posts: 66
Default Re: Nightmare monitor

Now follow this only if you dont have any speciall cinfiguration in your xorg.conf! Otherwise it might be a bit work to get back...

This is what I do when X is totally borked:
1. Get into runlevel 3(or what runlevel your distibution is using for a non-x environment). That is for debian and ubuntu: at gdm login screen: 'ctrl+alt+[1-6]', login, as root: /etc/init.d/gdm stop'
2. Remove xorg.conf like 'rm /etc/X11/xorg.conf' or rename to xorg.conf.old or the likes of that...
3. optional - Reinstall nvidia driver
4. From the drivers installprogram or manually by running 'nvidia-xconfig' as root, will generate a basic, hopefully working xcorg.conf.
If you use dual screens(two monitors) plug both in now.
5. as root still in terminal: '/etc/init.d/gdm/start'
Hopefully X will start with this basic xorg.conf that uses the nvidia driver. If further configuration is needed, first try with 'nvidia-settings' and make the changes if there are any to be made, and be sure to click "save configuration file" or something like that

'/etc/init.d/gdm stop[restart]' is for terminating X in a nice way. Ofcourse you could remove and genrerate a new xorg.conf while still in your graphical environment then yust restart X with the new configfile by logging out and in again... possibly a ctrl+alt+backspace is needed to fully restart X. However if a reinstall of the nvidia driver is needed, you cant have X running, thats why theese steps are in here.
And yeah, if you dont use gdm as login-program(not correct term, i know) use what you use like /etc/init.d/kdm[gdm xdm whatever] stop[start]

EDIT: to clarify step 1: You dont need to get to runlevel 3, but following the above about restall of nvidia-driver, x can not be running. If you like to go to runlevel 3 in debian/ubuntu use 'telinit 3' and then 'telinit 5' to get back to a graphical environment.
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Old 11-27-08, 03:27 AM   #5
Cougar81
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Default Re: Nightmare monitor

Can you post your Xorg log using the configuration I posted?
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Old 11-27-08, 05:38 AM   #6
davidtrickett
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Posts: 4
Default Re: Nightmare monitor

Cougar81

Now things have got really weird - when I logged on for this session there was a brief view of an Nvidia splash screen just before the desktop appeared - and I've got all available resolutions back! I had done absolutely nothing to anything in the meanwhile - apart from pressing the monitor button to display resolution during bootup which should not have any effect. However we are not there yet (and I suspect this is only temporary) - refresh rated are still out and title bars have vanished from screen windows.

Here are some more files - conf & log from last night (800x600) and now.
Attached Files
File Type: txt xorg.0.log.26_11.txt (51.2 KB, 75 views)
File Type: txt xorg.0.log.27_11.txt (23.7 KB, 86 views)
File Type: txt xorg.conf.26_11.txt (1.9 KB, 73 views)
File Type: txt xorg.conf.working.27_11.txt (1.7 KB, 91 views)
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Old 11-27-08, 03:22 PM   #7
davidtrickett
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Talking Re: Nightmare monitor

Cougar81

Re earlier - I think I have managed to sort things out! Yesterday I downloaded the Nvidia proprietary drivers, but couldn't figure out how to install them. Every attempt I made was greeted with an error message. Somehow on the next restart it must have decided to install itself! So we now seem to be stable & after a bit more messing about I seem to have all resolutions needed.

Aren't computers wonderful?

Thanks for all your help - although you didn't actually give me a working answer you have taught me a lot.

Now if you can tell me how to get Ubuntu to cope with my 6 button 2 wheel mouse you will earn my undying gratitude !
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Old 11-28-08, 01:55 PM   #8
Cougar81
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Posts: 6
Default Re: Nightmare monitor

First, try commenting the InputDevice sections out. The xorg-server should find the input devices automatically. Else, try using evdev:
Code:
Section "InputDevice"
	Identifier	"Configured Mouse"
	Driver		"evdev"
	Option		"CorePointer"
	Option		"Device" "/dev/input/eventX"
EndSection
Find which event dev-file is your mouse from dmesg or search it from /sys/class/input/. If you can upgrade your xorg-server to 1.5.x you may have better luck with it.

Glad to hear the mode-setting is working now.
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