144Hz monitor stuck at 60Hz

i have the last nvidia-352 driver and after a reboot my monitor return to auto 60Hz instead of 144Hz.

I tried sudo nvidia-settings and saving the configuration in /etc/X11/xorg.conf but it doesn't work.

I have tried the same thing in Kubuntu and my configuration is saved after a reboot.

Sometimes, you need to add the command in your configuration including all the parameters.

I had the same issue. Adding xrandr --output DVI-I-2 --mode 1920x1080 --rate 144.00, where you of course have to identify your parameters by just running xrandr and setting your DVI/HDMI output correctly.