Ubuntu 해상도 이슈

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2023/03/27

xrandr : Failed to get size of gamma for output default" for mDP type connection

My system specs : Intel i7-8700k (Coffe-lake) Mother board : ROG(Maximus X Hero) OS :Ubuntu-Gnome 16.04 I booted my new PC with Ubutnu-Gnome 16.04, after installation the screen resolution is 10...

https://askubuntu.com/questions/978663/xrandr-failed-to-get-size-of-gamma-for-output-default-for-mdp-type-connection

How to fix error 'xrandr: cannot find output "VGA1"'?

I am trying to enable a HDMI connection to a monitor connected with a HDMI cable to my Lenovo laptop using the following commands. > xrandr xrandr: Failed to get size of gamma for output default

https://unix.stackexchange.com/questions/176452/how-to-fix-error-xrandr-cannot-find-output-vga1

본인의 경우 아래와 같은 작업을 하니

2560\times 1440

해상도로 변경이 가능했음!

sudo nano /etc/default/grub

	GRUB_CMDLINE_LINUX_DEFAULT="quiet splash i915.alpha_support=1"
	GRUB_GFXMODE=2560x1440

sudo reboot
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복사

이후 발견했지만, Intel CPU 에서만 동작을 하는 듯 함!