Questions tagged [monitor]

Questions that relate to the electronic display (sometimes called a visual display unit) for computers. Typically questions relate to visual issues such as flickering, resolution, black-screens together with the usage of single and multiple displays.

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Ubuntu black screen on startup

I have a Lenovo T460 running Ubuntu 20.04. Recently I unplugged it from an external monitor and then restarted it. Since then it has stopped working correctly. Now when I turn it on, I see the Lenovo ...
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How do I clock my monitor to 75Hz?

I have an nVIDIA card and I want to clock my monitor to 75Hz. The monitor is Dell P2720D.
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Big lag when puting external monitor as main and only screen

I just installed Ubuntu 20.04 on my laptop (120hz). I wanted to set a BenQ 60hz external monitor as my main screen because I don't like the small screen of the laptop. When I use the dual screen ...
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20.04 - does not detect VGA monitor connection event

It's my first question here - so I'd like to say Hello! I'm facing some issue on such setup: Dell Precision 7510 with origin Nvidia graphics Ubuntu 20.04 fresh install Dell docking station with ...
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External monitor not working with HDMI

I am using a DELL XPS 15 9570 laptop with UBUNTU 18.04 LTS. When I connect the external screen through HDMI, the screen is not working. I have tried multiple solutions found on internet but any of ...
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Virtual monitor using AMD gpu

I am trying to setup a virtual monitor with xrandr. I don't have intel gpu, so creating a /etc/X11/xorg.conf.d/20-intel.conf file is not a solution for me... How can I create a virtual display output ...
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Ubuntu Monitor Help

My 240 Hertz monitor (Running off DisplayPort from my GTX 1060) Will run just fine at 120 hertz, then I will switch to 240 hertz in Linux setting (Well, 239.76 Hertz) and the monitor will become ...
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How can I get around the fractional scaling bug with upturned monitors?

If the monitor is upturned Ubuntu will rescale firefox in an awkward way after going to sleep mode. Has anybody found a solution for this fractional rescaling bug?
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How can I reset my monitor settings?

I have Ubuntu 20.04 running on my laptop and have it connected to an external monitor. Ever since I connected another device to my monitor and then switched back to my laptop, my laptop won't connect ...
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Ubuntu suddenly doesn't detect my Monitor anymore

I have a Lenovo ThinkPad P53 with Ubuntu 20.04 installed and it is connected to an additional Monitor. I connected these devices with a cable that has usb-c on the one side (plugged into my laptop) ...
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20.04 Display goes black and whole monitor is unresponsive

I'm facing a strange issue. Some time ago (about 2 months) my computer started to show a black screen while operating it normally (e.g. reading e-mails). If something is played (e.g. youtube) I can ...
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LG 34WN750 monitor crash?

I'm not sure why this is happening. I turn on my computer, do some work, and all of a sudden it just crashes. I have my monitor connected to rtx 3090 via hdmi, with AMD ryzen cpu. Is this a monitor ...
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eDP-1-1 to eDP-1

I am currently running Ubuntu 20.04 with 5.11 kernel on a dell xps 15 9500 with i3 wm. Since yesterday I'm having a problem about the laptop monitor: it is no longer seen as eDP-1 but eDP-1-1. This ...
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Display mode automatically switching in Ubuntu 20.04.02

I have an issue where sometimes out of nowhere Ubuntu decides to switch the display mode by itself to Single Monitor, Mirror or Join Displays, when I use my second display alongside my built-in Laptop ...
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In task admin, why is CPU% shown as a whole number? (ubuntu 20.04)

When i enter gnome-system-monitor a window pops up with the CPU % that every process is taking, however it just shows a number like 1,2,3,4... not a real percentage. How can I see real percentages?
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How can I fix this elusive graphical glitch at the top of my monitor?

I just installed Ubuntu 20.04.2 LTS recently (I'm a first time user) and I am experiencing a weird graphical glitch. The row of pixels at the top of my main monitor displays randomly flickering ...
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Newbie question here regaring screen resolution

I have a question where I bet you can help me out. First of a little of the backstory: I had run a RPi 4 with raspian and a kiosk mode to display my smarthome. I needed to switch to an Ubuntu build ...
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Cannot boot in fullscreen with ultrawide 21:9 monitor

I have a 3440x1440 21:9 monitor and I struggled a lot to boot without adding "nomodeset" setting in grub. I am on ubuntu desktop 20.10 with AMD 5500xt GPU and a ryzen 7 AMD CPU. My problem ...
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Ubuntu 20.04 Monitor Works on DVI Not on HDMI

I recently built a system and installed Ubuntu 20.04 LTS on it. During the building, I was using an older monitor connected to the machine via DVI port (MSI GeForce GT710 graphics card). It worked ...
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90 views

Turn off monitor

I just upgraded to 20.04 from 18 for my Ubuntu server which runs on a laptop. I have an alias that runs at startup that uses vbetool to turn off the screen sudo sh -c 'vbetool dpms off; read ans; ...
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Samsung LE22B450C4W TV size incorrectly detected and picture not centred on screen

I have just been given a Samsung LE22B450C4W 22" television that I wish to use as a second monitor for a DELL Inspiron 1545 laptop running Ubuntu 20.10, connected by a VGA cable. The screen ...
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How to turn off the monitor via command on Wayland (KDE Plasma)?

I like turning off the monitor when I don't need it, to reduce eyestrain and energy consumption (e. g. when only listening to music). On X11, I have been using the sleep 0.5; xset dpms force off shell ...
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Monitor turn off on install 20.04

I am trying to install Ubuntu on my tv computer to replace windows because I prefer an open source when possible even if my family is use to it. I created a usb boot disk using Rufus for desktop Lts ...
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Ubuntu 20.10 Desktop 64-bit - Change colour bit-depth

In the GUI settings the colour bit-depth option is not present: Where is it?
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Second monitor looks distorted

I have attached an image of what I see. My mouse seems to be pictured fine but everything else is distorted for some reason. I am new to Ubuntu and Linux in general so I am not sure on how to approach ...
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Resolution issues after installing fakexrandr on Ubuntu

I recently got a Philips 499P9H monitor and everything worked at first, but I wanted to be able to only use half the monitor for a fullscreen application / video, so I googled around and found ...
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Ubuntu 18.04 LTS monitor with displayport not working

I just connected another monitor via displayport adaptor (monitor is VGA) but it's blank after that I ran xrandr I it showed it's there. After there I ran: xrandr -q | grep DP DP-1-1 connected (...
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How do I create a headless Xorg server with two monitors?

I'm trying to make a headless server with two monitors, the eventual goal being to run an application (Zoom) full-screen on the second screen, grab it via OBS and send it out via NDI. Control would be ...
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102 views

Input signal out of range after logging in KDE

I installed KUbuntu (Ubuntu with KDE) a few weeks ago. Yesterday, I used Synaptic to download and install the GL-117 game. When I ran it, my monitor went black and displayed this message: Input signal ...
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Drivers for monitor lenovo y27-20q

I want to connect 2 monitors one with HDMI and one with display port, the one with the HDMI cable is a basic dell display 1920:1080 and the one with the display port has a 2K resolution. the monitor ...
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29 views

How to always use external monitor

When I plugin my external monitor through HDMI, I can switch to "External Only" by pressing win+P. But when I logout & login the system, it reverts back to using both laptop & ...
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How to get second monitor back

I'm probably missing something obvious, but one of my monitors doesn't work when logged in (both are fine when not logged in, so I know it's not a hardware issue). When I run mate-display-properties ...
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Does Qualcomm Atheros QCA6174 802.11ac include packet injection?

I was able to put my QCA6174 in to monitor mode. Upon using aireplay-ng --test wlan0mon It says: No Answer.. Found 0 AP Does this mean the wireless chip on the Dell Xps 13 9360 does not include packet ...
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1answer
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How to increase display size?

I have a dual monitor setup with one 1080p and one 1440p monitor. The size of text and graphics on my 1440p monitor is very small. I have tried to use the scale option but it reduces the sharpness of ...
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Module cpuid not found in directory /lib/modules/5.8.0-1013-raspi when I'm launching sensors-detect

When I launch the command sensor-detect I receive this error: "Module cpuid not found in directory /lib/modules/5.8.0-1013-raspi" This is my OS. Linux 5.8.0-1013-raspi #16-Ubuntu SMP PREEMPT ...
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Ubuntu 20.04 LTS with DELL 3419w

it is possible to use Ubuntu 20.04 LTS with a DELL 3419w uwqhd display? If I switch from a FullHD 22 zoll monitor to the DELL monitor, so the screen goes black. Best regards, Dirk
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Using Ubuntu as second monitor

I have an HP laptop that is dual-booted windows with Ubuntu along. I want to use windows on my laptop and ubuntu on the monitor such that both can run side by side. Is it possible?? Thanks in Advance!
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Ubuntu 18.04, two monitors. When one turns off, they don't “reset” to a single monitor. I can still move my mouse on to the turned-off monitor

I have Ubuntu 18.04. I have two monitors, one hooked up to an HDMI port, the other to displayport. My left monitor is labeled 1, and primary. My right monitor is labeled 2. Previously, when I'd turn ...
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Screen brightness issue

I have Ubuntu 20.04LTS, I faced problem in screen brightness, The brightness controller in the top side menu is missed, Then I tried to change brightness level manually from terminal. I tried to get ...
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1answer
126 views

Help configuring display settings: Ubuntu 20.04 and old (of course) desktop w/NVIDIA GeForce 7050 graphics card

I recently loaded Ubuntu 20.04 onto a new 1TB hard drive in an old eMachines desktop computer. Info: NVIDIA GeForce 7050 Integrated graphics card VGA port on desktop; no other display ports Acer 20” ...
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42 views

Set a monitor resolution not available in Display Settings?

I'm attempting to follow this guide. My display is 1600x900, however that resolution is not available in the Display Settings dialogue. I tried a few things, and ended up following the linked guide. ...
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Monitors wake up immediately after lock

I changed my pc recently and reinstalled Ubuntu from scratch (20.04 LTS). Now when I lock the pc or when it locks automatically after 5 minutes (default setting), the monitors will turn themselves ...
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How to adjust for a wrong fractional scalling after standby in LTS 20.04?

As soon as my system goes into standby and I move my mouse the monitor shows the correct login screen again. But when I had entered my password, the fractional scaling (presumably) is now off. I have ...
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How can I adapt brightness of my Dell P2720D Monitor under settings with a Intel NUC?

Unfortunately it doesn't work. Under settings -> info I can see Ubuntu found a "Mesa Intel® UHD Graphics (CML GT2)" as onboard graphiccard.
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Monitors out of range on login

Ever since I installed my new graphics card (an RTX 2070 Super) I've been getting this weird problem with my Ubuntu 20.04 installation where 2 of my 3 screens stop working. The firmware on the ...
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210 views

How do I increase the resolution of headless system using dummy monitor?

Please, this question has not been answered, I have read them all and none seems to work for me. I have a headless system Ubuntu 20.04 with Advanced Micro Devices, Inc. [AMD/ATI] Richland [Radeon HD ...
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Proportions on Philips monitor are completely wrong

I cannot get a normal screen resolution with ubuntu. The Proportions on my Philips monitor are completely wrong. Ubuntu only sees 1024/768 and 800x600 resolution. My other windows and Synology ...
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356 views

External Screen USB-C with Ubuntu 20.04 it works and it doesn't work

I have a Envy 13 2018 with a Blitzwolf screen Bw-pcm2. I conect them through the usb-c interface (send power and display) and the screen dont show any image (it´s not on). But, if i boot the notebook ...
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162 views

HDMI not working with Ubuntu 20.04 despite multiple attempts. Cannot display screen on projectors, monitors, or TVs

Since Ubuntu 18.04 and 20.04, there seeems to be a higher incidence of HDMI not working at all, and it seems that many posts do not have solutions. My computer Info lspci 00:00.0 Host bridge: Intel ...
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Poor black colour on one monitor while using Kubuntu

I have an issue with dual monitor configuration. I am using HP ProDesk 600 G1 with two monitors - HP EliteDisplay E231 (connected via VGA) and EIZO EV2316W (connected via DisplayPort). It is nearly ...

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