Thanks for the input. I managed after much fiddling to get the display back on track. But there is still something strange going on. Each morning now when I get to the computer the left monitor is dead, i.e. it doesn't seem to have a data signal. The only way to bring it back is to power down the computer and physically disconnect and reconnect the dvi cable from the graphics card. After that everything works again until next morning. There isn't anything of interest in /var/log/messages I have a nVidia NV43GL [Quadro FX 550] card. Both monitors connect to this card with dvi I using the nouveau driver Any thoughs? Markus 2010/1/15 Tomas Hajek <thajek@xxxxxxxxxxxxx>: > Hi Markus, > I had a similar problem and what I had to do was just mv the /etc/X11/xorg.conf file out of the way (I think system-config-display > might be failing on trying to parse your exising xorg.conf file.) I had this problem with my ATI card but it might work for you too. > -Tomas > Müslüm Ejder wrote: >> Hi Markus, >> i had 2 Displays connected on 2 devices >> 1 Nvidia on Board >> 1 Nvidia on AGP >> >> if u have two Videocards you must go into your PC-BIOS and specify the >> Videocard where your Primary Display Connected as your Primary one. >> >> but most people using only 1 Videocard for two Displays. if this is true >> for you then chek if your nvidia driver is installed properly. >> >> to check it open a terminal and : >> lsmod | grep nvidia >> if the output like the following line, the driver is installed and works >> and you dont need to install the driver again. >> nvidia 10311864 26 >> >> if the output is nothing the driver is not installed or not for the >> kernel u have. Then you need to install it with following steps: >> >> Download the latest driver from >> http://www.nvidia.co.uk/Download/index.aspx?lang=en-uk >> change to runlevel 3 - open a terminal and type : >> su -C 'init 3' >> login as root >> yum install gcc kernel-headers (installer needs the headers and gcc >> to auto compile the driver for your kernel) >> now change to folder where u downloaded your nvidia driver is locatet >> Type "sh NVIDIA-Linux-x86_64-169.12.pkg1.run" >> follow the steps from installer to install or reinstall the driver. >> >> Now or when your driver was properly installed you must config your >> screen, for a basic configuration use nvidia-xconfig in terminal as >> root. >> now u can go back into runlevel 5 as root with: >> init 5 >> log in in your desktop and open a terminal >> now type su -C 'nvidia-settings' >> and Configure your Desktop >> when you have multiple displays and use it as one big desktop >> (stretched) you cannot enable desktop effects etc. only when u have >> multiple desktops and displays. >> >> - hope will help you - >> >> Am Donnerstag, den 14.01.2010, 10:02 +0100 schrieb Markus Lindholm: >>> When I try to run system-config-display as root I get the following >>> >>> Traceback (most recent call last): >>> File "/usr/share/system-config-display/xconf.py", line 378, in <module> >>> dialog = xConfigDialog.XConfigDialog(hardware_state, xconfig, >>> videocard.VideoCardInfo()) >>> File "/usr/share/system-config-display/xConfigDialog.py", line 640, >>> in __init__ >>> if len(self.xconfig.layout[0].adjacencies) > 1: >>> IndexError: index out-of-bounds >>> >>> The background is that this morning when I came to my desktop machine >>> I didn't get a password screen from the screensaver, so I rebooted. It >>> booted fine and I got a login screen and it accepted my login but I >>> didn't get a proper gnome desktop. All I got was a blue background >>> (the standard one) and the possibility to right click -> cŕeate a new >>> folder -> open up the file-browser -> find gnome-terminal and so I >>> could start applications in X but I had no desktop, i.e. no panels or >>> menus and so forth. >>> >>> I thought perhaps installing nvidia drivers from rpm fusion instead >>> would help. That was a non-starter, I didn't even get X. So I erased >>> those packages. >>> >>> At that point I also thought of disconnecting my second monitor that >>> had been blank all morning, and that did the trick of getting back my >>> desktop, but at that point the resolution of my screen had dropped to >>> 800x600 and now I don't seem to have any means to set it back >>> >>> Any advice? >>> Markus >>> -- >>> users mailing list >>> users@xxxxxxxxxxxxxxxxxxxxxxx >>> To unsubscribe: https://admin.fedoraproject.org/mailman/listinfo/users >>> Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines >> >> > -- > users mailing list > users@xxxxxxxxxxxxxxxxxxxxxxx > To unsubscribe: https://admin.fedoraproject.org/mailman/listinfo/users > Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines -- users mailing list users@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe: https://admin.fedoraproject.org/mailman/listinfo/users Guidelines: http://fedoraproject.org/wiki/Communicate/MailingListGuidelines