NVIDIA dual screens not working as expected

English Hardware
1

All,

I just added a NVIDIA NVS300 to my machine (with two monitors now, both acer al1912), reinstalled 13.1 64 bit, added nvidia repositories, updated and ran nvidia-xconfig and got my two screens … however they do not have the same resolution. The first one has 1280x1024 (as expected) and the second one has 640x480 :’( (expected also 1280x1024)
I hoped to fix this with nvidia-settings … but both monitors use the highest resolution available within nvidia-settings.

The machine is dual-boot with windows 7. In windows 7 I was able to set the resolution of the second monitor to 1280x1014 (using the “windows” nvidia-settings tool), therefore I concluded that the hardware is capable of giving me the expected result :slight_smile:

I just can’t get this (dual screens both on 1280x1024) to work on linux, any suggestions??

2

Hmmm Maybe the second monitor is not registering and default resolution is used.?? You can set the resolutions for either or both monitors in the /etc/X11/xorg.conf or the /etc/X11/xorg.conf.d files. You will have to calculate the modline for the monitor.

Also You did not mention which desktop. Did you try making adjustments there?

3

Since it worked under windows I assumed that the hardware was not faulty … WRONG!!
In the xorg log I found that one EDID could not be read. Switched monitors → problem moved, thus monitor defect or cable defect. Switched cable → problem moved.
Replaced the cable with a new one … problem solved!!!

To all: thanks for your feedback!!!