nvidia autogenerated xorg.conf scales my 4k display.
by Johannes33 from LinuxQuestions.org on (#59F79)
Hi I added an extra screen to my nvidia gtx 960, then I hit the autogenerate xorg.conf.
Before I did that I saved the old xorg.conf so I could revert to it if something broke.
Result I got the extra 1080 screen working in portrait mode but the old 40" 4k screen got really scaled.
I reverted to my old xorg.conf to see if that was what was not playing nice and got my unscaled screen back but my second monitor is black.
I did a diff of the two xorg.conf and found that the only difference is one line. But I do not know how to decipher it.
picture of diff:
https://imgur.com/Hg3hUL7
(when imgur kills the picture here are the settings:)
under section "Screen"
scaling problem:
Option "metamodes" "DP-0: 3840x2160_60 +1080+0, DP-4.8: nvidia-auto-select +0+240 {rotation=left}"
One monitor:
Option "metamodes" "DP-0: nvidia-auto-select +1680+0, DVI-D-0: nvidia-auto-select +0+1110"
Could it be that one monitor affects the resolution of the other? I do not think the 1080 monitor is scaling at all.
On a side note can one access some settings in "nvidia x server settings" to change scaling?


Before I did that I saved the old xorg.conf so I could revert to it if something broke.
Result I got the extra 1080 screen working in portrait mode but the old 40" 4k screen got really scaled.
I reverted to my old xorg.conf to see if that was what was not playing nice and got my unscaled screen back but my second monitor is black.
I did a diff of the two xorg.conf and found that the only difference is one line. But I do not know how to decipher it.
picture of diff:
https://imgur.com/Hg3hUL7
(when imgur kills the picture here are the settings:)
under section "Screen"
scaling problem:
Option "metamodes" "DP-0: 3840x2160_60 +1080+0, DP-4.8: nvidia-auto-select +0+240 {rotation=left}"
One monitor:
Option "metamodes" "DP-0: nvidia-auto-select +1680+0, DVI-D-0: nvidia-auto-select +0+1110"
Could it be that one monitor affects the resolution of the other? I do not think the 1080 monitor is scaling at all.
On a side note can one access some settings in "nvidia x server settings" to change scaling?