Home / ubuntu / Questions

Questions[4k-monitor](ubuntu)

Martin Hope
Kaigo
Asked: 2020-09-17 02:26:46 +0800 CST
  • 6

I'm using VLC which is installed via the snap store. However, I have an issue when viewing it on a 4k display.

So I'm wondering if there is a way to set the scaling for snap apps, as I may run into this again for others.

I tried this post here so my desktop entry is now. .

Exec=env BAMF_DESKTOP_FILE_HINT=/var/lib/snapd/desktop/applications/vlc_vlc.desktop --force-device-scale-factor=2 /snap/bin/vlc %U

but couldn't get it to work.

Thanks!

PS. on Ubuntu 20.04

snap 4k-monitor
Martin Hope
Gabriel Staples
Asked: 2020-09-05 21:31:42 +0800 CST
  • 4

In my Ubuntu 20.04 display settings on a Dell Latitude 7490 laptop, I can set my laptop monitor to 1920 x 1080 resolution at 60 Hz, but I cannot set my AOC CU32V3 32" 4k monitor to 60 Hz (see screenshots below), even though the monitor supports it. It feels laggy, so I'd really like to increase the refresh rate to 60 Hz. Any idea how I can do this?

Laptop monitor is 60Hz: enter image description here

External monitor supports 4k (3840 x 2160 resolution) at 60Hz refresh rate, but I cannot set it to 60Hz: enter image description here

Notice there's no 60Hz option: enter image description here

Proof the manufacturer says it supports 60Hz at 4k:

https://us.aoc.com/en/monitors/cu32v3 enter image description here

Info on my laptop's graphics card (Intel HD Graphics 620):

I'm currently connected with a High Speed HDMI cable in HDMI 1.2 mode. Am I to understand that I must use a USB C to Display Port adapter and the Display Port to get 4k at 60Hz, perhaps, instead of HDMI?

enter image description here

Related:

  1. https://www.dell.com/community/Latitude/How-to-have-Latitude-7490-to-use-4k-display-with-60Hz/td-p/6085124
multiple-monitors display-resolution display 4k-monitor 20.04
Martin Hope
tomaytotomato
Asked: 2020-07-01 00:44:18 +0800 CST
  • 7

I have setup Ubuntu 20.04 in Dual boot with Windows 10.

On Windows 10 @ 3840 x 2160 (16:9) resolution I do not have any issues with video, smooth scrolling, IDE, games.

However on Ubuntu @ 3840 x 2160 (16:9) resolution, I get stuttering low FPS for video, jaggy/rough scrolling.

When I set it to 2048 x 1152 (16:9) resolution it is way smoother and no issues.

My hardware info is the following:

Intel(R) Core(TM) i5-4690K CPU @ 3.50GHz
Palit GeForce RTX 2070 8Gb
16Gb DDR3 2400mhz Corsair Vengeance RAM
LG 27inch 4K Monitor

These are the following things I've tried:

  • Swapped HDMI to Displayport from GPU to Monitor
  • Tried the prorietary Nvidia drivers (version 440), X.org drivers
  • Restarting Gnome
  • Updating the latest drivers and patches from Ubuntu

I am happy to use the monitor at a lower resolution but I am curious as to what the bottleneck is here?

Is there any fixes?

nvidia display-resolution graphics 4k-monitor
Martin Hope
medhunter
Asked: 2019-05-24 15:18:12 +0800 CST
  • 5

I have Ubuntu Budgie 18.04.2 LTS installed on an Acer F15 F5-573-70EB[Here] laptop with an i7 CPU, NVIDIA GTX 950m GPU, and 16GB RAM. I connect it to a Philips 4K HDR TV.

Before installing NVIDIA's drivers, full HD worked fine on the integrated Intel 620 GPU. Yet choosing 4k resolution with 200% scaling option, playback became laggy, non smooth, both in browser and VLC. I reverted back to 1080P which is fine.

After installing NVIDIA drivers from within Ubuntu updates and software, I get the same results.

How should I approach solving this?

nvidia display-resolution vlc acer 4k-monitor
Martin Hope
Elodin
Asked: 2018-10-22 17:39:23 +0800 CST
  • 7

I ask because I own a 4k large monitor and its a pain in the ass having to always change the resolution when Apps don't scale well to 4k e.g Steam, Spotify, Runescape(osrs) and other.

So what I would like know if its possible to have my main workspace remain at 4k and have the other change to e.g 1920x1080, 1600x900 1368x768. In essence a different resolution for each workspace.

Thank You.

display-resolution workspaces 4k-monitor scale-mode