Arch Linux

spagnollo

Member

Registered: 2015-02-19

Posts: 2

Can't change screen resolution

Recently I haven't been able to add a new modeline and change my screen resolution. My default screen resolution is 1920x1080, but I want to enable 1280x720, as it's not included by default.

I tried to follow the instructions in the wiki(https://wiki.archlinux.org/index.php/Xrandr#Adding_undetected_resolutions) running the following commands:

cvt 1280 720
# Modeline "1280x720_60.00"   74.50  1280 1344 1472 1664  720 723 728 748 -hsync +vsync
xrandr --newmode  "1280x720_60.00"   74.50  1280 1344 1472 1664  720 723 728 748 -hsync +vsync
xrandr --addmode eDP1 1280x720_60.00
xrandr --output eDP1 --mode 1280x720_60.00

When I run it, the screen goes black then returns to the default resolution. No errors in console.

What could possibly be happening? What can I do to enable the 1280x720 resolution?

Knute

Member

From: Minot, ND

Registered: 2009-03-17

Posts: 604

Re: Can't change screen resolution

Have you looked in /etc/X11/xorg.conf?

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Knute

onslow77

Member

Registered: 2014-09-21

Posts: 283

Re: Can't change screen resolution

Hello,

What is the output when you run:

xrandr

Regards
Martin

Last edited by onslow77 (2015-02-25 12:32:00)