Nvidia Quadro 5000 messing up X Server display


Here is more information about the problem.

$ lspci | grep VGA
03:00.0 VGA compatible controller: NVIDIA Corporation GF100GL [Quadro 5000] (rev a3)

And I have two monitors: Dell U2412M and Dell E2414H. The issue is that Dell U2414M has 1920x1200 resolution and works great but Dell E2414H only has 1280x1024 resolution (as the highest setting). Under Nvidia X Server Settings, this one actually shows up as NVIDIA_LCD_VGA and not as Dell like the other monitor.

My /etc/X11/xorg.conf file is https://pastebin.com/Pzf2jbjx

Both the monitors had 1920x1200 resolution and were working find till one of the recent updates from Ubuntu and I cannot get the higher resolution back on second monitor.

Any tips or guidance would be appreciated.


Please run nvidia-bug-report.sh as root and attach the resulting nvidia-bug-report.log.gz file to your post. You will have to rename the file ending to something else since the forum software doesn’t accept .gz files (nifty!).

Attached is the output from nvidia-bug-report.sh.

nvidia-bug-report.log (732.0 KB)

Looks like you’re using some converter DP to DVI or VGA and the EDID can’t be read. I suspect the adapter simply being broken so the EDID is replaced by the nvidia driver with a generic one.
Please check if using a different connector on the nvidia card changes anything. Also check if the connector at the monitor is properly seated and if the monitor is properly detected when connected to the DVI port.
In general, you should urgently check the fan and heat spreader of the nvidia card for dust and clean it. It runs at 82°C while idle.

Yes, I am using an adapter to convert for cabling. I shut down the machine, took off all the wires and re-plugged the wires again and the resolution is BACK to 1920x1080!!!

It has been a while since I cleaned the machine and dust may have accumulated, I will clean it again in next few days.

Thanks for the troubleshooting and really appreciate your help!