Screen lines at 75 hz

[Flying Mandarine]

I found only one .xinitrc file, in /etc/X11/xinit. Can I try this one out safely?

And am I just supposed to paste this:

xrandr --newmode "cvt -r 1280 768 60" 79.50 1280 1344 1472 1664 768 771 781 798 -hsync +vsync
xrandr --addmode HDMI-0 "cvt -r 1280 768 60"
xrandr --output HDMI-0 --mode "cvt -r 1280 768 60"

exit 0

in the new file? With or without the 'exit 0' bit?

Again, thank you for your help,

FlyingMandarine

[BicyclerBoy]

Don't know..
How much harm can it do?

The ~/.xinitrc/ I refer to is a hidden folder in your home folder..
It may not exist.

But your /etc/X11/xinit/xinitrc folder/file seems promising ..
The definitive answer should be found on Xorg.org website..

I would not add the "exit 0" to end of the new file.

[Flying Mandarine]

I found the file where you suggested it would be. However, I'm afraid it's still not working.

There is only one line of command in that file:

. /etc/X11/Xsession

I tried adding the following both before and after that line of command:

xrandr --newmode "cvt -r 1280 768 60" 79.50 1280 1344 1472 1664 768 771 781 798 -hsync +vsync
xrandr --addmode HDMI-0 "cvt -r 1280 768 60"
xrandr --output HDMI-0 --mode "cvt -r 1280 768 60"

But it didn't work. However, it still does work pretty well when I input those three commands manually in the Terminal after Ubuntu has booted.

[BicyclerBoy]

It's possible the full path to executable is required
/usr/bin/xrandr

It is possible the best soln is a script in hidden folder in user home
~/.xinitrc/my_script

[Flying Mandarine]

Well that's curious, I thought I had answered a few days ago...

I added this full path, but it didn't work either.

As for ~/.xinitrc/my_script, I didn't find it in my Home folder.

Although I would like to know what the problem actually is, the fact is, I just have to enter those three commands in the terminal when I start my computer and everything is fine, so I don't want to bother you any longer, as I don't think it's worth the trouble.

You've been incredibly helpful BicyclerBoy, and thanks to you my problem is practically solved, which is more than enough!

Thank you for your time and patience,

FlyingMandarine

[BicyclerBoy]

You most likely do not have the hidden folder (& therefore any contents)..

You have to create the hidden folder...& the script inside.

I'll try some experiments on my computer & get back to you..

Failing all that you could place the commands into a script (text file with execute bit set) & launch it from keyboard combo or desktop icon..