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 20.04 Fresh Install On Brand New Acer Aspire 5 Computer: Absolutelty Horrific Hardware Support from Ubuntu with a Range of Problems

After installing Ubuntu 20.04 alongside Windows on my brand new Acer Aspire 5 laptop, many things are not working. During the installation I checked the box to install third party drivers so I'm ...
ekiefer's user avatar
  • 41
0 votes
1 answer
4k views

VGA not working

TL;DR: Connecting notebook to an external monitor with VGA doesn't work, Ubuntu recognizes an "unknown" display but nothing appears in the monitor. The monitor works on other computers. I'm ...
Mauricio Karas's user avatar
1 vote
0 answers
736 views

HDMI is not giving an output "AddScreen/ScreenInit failed for driver 0"

I can't seem to get an output from my HDMI port, however I can access it through PuTTY. When I use xrandr I keep getting messages "Can't open display". Maybe there's an obvious error in the ...
Simon's user avatar
  • 111
0 votes
2 answers
621 views

KVM switch not showing image on secondary screen

Trying to set up my XPS 9570 on Ubuntu 20.04 with this KVM switch: https://www.amazon.ca/gp/product/B08F1XGTBN/ref=ppx_yo_dt_b_asin_title_o00_s01?ie=UTF8&psc=1 I can use the keyboard and mouse ...
Alex's user avatar
  • 171
0 votes
0 answers
297 views

Ubuntu Boot From Flash Drive Out of Range [duplicate]

Seems to be booting from the flash drive and screen turns black and a small box appears with "Out Of Range" appears. I have been able to get to the grub menu and boot without graphics. I ...
Joe's user avatar
  • 1
0 votes
1 answer
355 views

Benq GW2480 Gnome controls not working

I've a problem with a new Benq GW2480. I've just plugged it in with a hdmi to usb-c cable to my Intel nuc 8i5. It found it immediately. But I cannot control the brightness or volume, the Gnome ...
Simon Williams's user avatar
2 votes
0 answers
300 views

iMac monitor colors are washed out after suspend in Ubuntu 18.04

I managed to install Ubuntu on an old iMac a while ago, but when it wakes up from a suspend, the colours on the monitor are super washed out. I've looked for a few hours on the internet for a fix, but ...
Blobtoe's user avatar
  • 66
1 vote
0 answers
30 views

Just switched from windows 10 to Ubuntu. Right before I uninstalled windows, all three of my monitors were working, now one is black screen

When picking the primary display, all three monitors are there. It appears my left monitor it still part of the equation, because certain windows open up over there, and I can drag the mouse into the ...
David Martin's user avatar
0 votes
1 answer
1k views

LG Monitor not working with 75hz

I have LG 34WL500 and it works fine with 60hz settings, but when I set 75hz the screen remains black. Has anyone experienced similar issue? Am not sure if additional drivers are needed for this ...
Кристиян Кацаров's user avatar
0 votes
1 answer
446 views

Change monitor default framerate

My principal monitor defaults to 75Hz, but for some reason does not display anything when the frame rate is 75Hz on any of my devices (and OS). It does however work when changing to 60Hz. I managed to ...
merc1er's user avatar
  • 223
2 votes
1 answer
4k views

Unable to set a refresh rate higher than 60Hz after installing nvidia driver

After fresh installing Ubuntu 20 everything works fine with a monitor (LG w2363d) at 120hz and 1920x1080 with nouveau driver(GTX 1060) and mobo(Sabertooth 990fx), except when I install any nvidia ...
dariemihai95's user avatar
0 votes
1 answer
83 views

Issue after upgraded from ubuntu 18.04 LTS to latest ubuntu 20.04 LTS where extra monitor blanking out for few seconds randomly

can someone help please urgently as it is disturbing my work from home setup? It worked fine in Ubuntu 18.04 LTS but issue in 20.04 LTS. Extra monitor- (philips 273V7QDAB) Laptop - Inspiron 15R 5000 ...
user895130's user avatar
2 votes
1 answer
202 views

Monitor does not "wakup" after suspend

I have Dell UltraSharp 49 Curved Monitor - U4919DW and the monitor stays in standby after suspend mode is exited. Sometimes it wakes up after a while. Any clues how to debug this? Ubuntu version: 20....
spacemonkey's user avatar
0 votes
1 answer
2k views

Ubuntu 20.04 Second monitor is not working

I tried to connect my laptop with the second monitor, however, it displays on the second monitor that No HDMI signal from your device. When I checked the Displays setting, there is no monitor too. I ...
Gauss Shiroemon Madeon's user avatar
1 vote
0 answers
55 views

PC goes black screen & unresponsive after a while

I have a clean and fresh installation of Ubuntu 20.04 along with the most recent GNOME desktop. Although I have set in energy settings that the screen should never go off, it does so, and in addition, ...
user826955's user avatar
0 votes
1 answer
1k views

AIRMON-NG FROZEN LAPTOP

I have ubuntu when I do airmon-ng start wlo1 the computer freezes and won't move until I restart it! Can you help me?
ANOGHMAL's user avatar
1 vote
0 answers
866 views

xorg.conf not working with my LG 22LG30R monitor on Ubuntu 20.04 - can't set resolution

Ubuntu 20.04 LTS xorg.conf does not work with my lg monitor My PC: Core 2 Quad Q6600, XFX Geforce 8600GT 512MB VRAM, 8GB RAM, HD 400GB, Ubuntu 20.04 LTS. Graphics Driver: NVIDIA-Linux-x86_64-340.108 (...
Alex Dedalus's user avatar
3 votes
1 answer
853 views

Screen flickering on certain apps in Ubuntu 20.04.1 LTS

I use Ubuntu 20.04.1 LTS on a dual-monitor setup. These are the relevant components of my PC: CPU: AMD Ryzen 7 3700X 3.6GHz Motherboard: Asus TUF GAMING X570-PLUS Memory: Corsair Vengeance LPX 16GB (2 ...
DrChoppy's user avatar
0 votes
1 answer
114 views

Ubuntu 18.04 - second screen stay black

I know there is multiple questions mentioning the same issue but none of them gave me an answer. I've installed Ubuntu 18.04 on my Asus TUF 765D Laptop. When plugin a secondary screen (that works ...
boubside's user avatar
0 votes
1 answer
66 views

Ubuntu (Studio) suddenly not detecting monitors

Last night, all is well. This morning, only one of two monitors is detected, and only at a low resolution. [Edit: Ubuntu 20.04.] I'm not an advanced user, but know enough to do these things: lshw -c ...
Michael Dickson's user avatar
1 vote
1 answer
3k views

Server 20.04 turn screen off after inactivity

I am running Ubuntu 20.04 server on a raspberry pi 4. My issue is that the screen does not turn off, at all. I do not have any xserver installed, so x related answers won't work. Using setterm, I can ...
adoorable_door's user avatar
0 votes
1 answer
2k views

Remote System Monitor for Ubuntu and Android

I'm looking for a software for Ubuntu that is similar to Remote System Monitor I would like to access to my data and see them from my Android phone. Could you suggest any software like that?
grande grande's user avatar
1 vote
0 answers
31 views

Random Freezes in Ubuntu 20.0.4

My screen occasionally freezes, but it unfreezes after a second. During the freeze I can still hear audio, and whatever game is still running with ~60 fps. Freezing might not be the correct term, but ...
Hamuel's user avatar
  • 13
1 vote
1 answer
78 views

Network Activity w/o Terminal

While I can in certain cases appreciate the information floor provided by nload, et al. network monitors, how hard would it have been for Canon to just have the three-box network symbol on the top bar ...
user avatar
3 votes
0 answers
288 views

Gray overlay after login

After recent update and restart my screen is overlaid with semi-transparent gray. I've got no clue how to solve it, only thing that sort of works is changing monitors arrangement in settings, so that ...
entio's user avatar
  • 81
0 votes
1 answer
1k views

Set monitor refresh rate and make sure it was set correctly?

So I rand xrandr and got his output: 1920x1080 60.05*+ 59.93 48.04 1680x1050 59.95 59.88 1600x1024 60.17 1400x1050 59.98 1600x900 60.00 ...
Andrius's user avatar
  • 232
1 vote
1 answer
3k views

Vmware Wayland enabling 1920x1080 resolution

There already are many of the same questions but they ALL seems to be about the default X11, because they are all using "Virtual1", which seems to be the monitor name in X11, which is ...
Hello Kitty's user avatar
0 votes
1 answer
272 views

Can I change the standby time for my monitor with ddcutil?

When I restart my computer, DPMS turns my main monitor quickly and it adds a delay to being able to see my bootloader for selection. I do not want to turn off DPMS, only change the standby time. ...
avisitoritseems's user avatar
0 votes
0 answers
264 views

Ubuntu 20.04, wifi and dual monitor not working

Ubuntu 20.04 LTS was working fine after initial install. After the weekend I came back and neither my wifi nor second monitor working. Have screenshots of video/network diagnostics below. Seems I have ...
Andrew's user avatar
  • 1
0 votes
1 answer
1k views

Vlc media player full screen black rectangle

Whenever I change to full screen I see a small black shape of a rectangle for a split second. Plz help, I am new to UBUNTU 20.04 I use acer aspire e5 and I completely erased windows I only have Ubuntu ...
LE VAN DEES's user avatar
0 votes
0 answers
796 views

LG monitor (24MK430H-B) shows "no signal" with RPi 4

I've installed Ubuntu MATE with desktopify on a Raspberry Pi 4, got it running, used disable_overscan=1, all this in my LG TV. Now I've moved the Pi to my office, bought an LG monitor (24MK430H-B) and ...
Diogo Pratas's user avatar
1 vote
1 answer
291 views

Primary monitor turns off when it's input source changes, and does not turn back on

I am running Ubuntu 20.04 LTS with a GTX 1080 GPU with the Nvidia Driver Version 440.100 That being said, I have a two monitor setup: Monitor LG: 2560 x 1080 (primary) (DisplayPort) Monitor Samsung: ...
Ardante's user avatar
  • 21
2 votes
1 answer
2k views

New 20.04 install does not fill the whole monitor

Just installed 20.04 on my old desktop and initially the display was about 100 pixels too far left, cutting off the dock. I changed the refresh rate and auto-adjusted the monitor which lines the top ...
skinnypete's user avatar
0 votes
1 answer
805 views

External monitor not working

I have a dual-boot (Windows 10) Acer Aspire A715-71G Notebook with an Nvidia GeForce GTX 1050 Mobile GPU and I am trying to connect it with additional monitors to extend the view. When I plug in the ...
Pantelis Kaniouras's user avatar
1 vote
0 answers
68 views

Display Port monitor not detected Ubuntu 18.04 - VGA ok - Intel Ivybridge Mobile GC

VGA monitor running fine. Got a second monitor to run off the displayPort on the docking station.. Cable is a displayport to DVI adapter. Ubuntu just doesn't detect the second monitor. Machine is HP ...
Dan1971's user avatar
  • 11
3 votes
0 answers
158 views

External monitor only works when on the right hand side

Disclaimer: I'm a software developer, not a Linux expert. I use Ubuntu for development but I am bit rubbish when it comes to digging into the OS so please talk me to me like I'm a 5 years old :D On a ...
Alexandre Leprêtre's user avatar
0 votes
1 answer
795 views

uknown display in display settings and low resolution. Not getting Edid information because of bad checksum

I have three monitors, but one monitor has a low resolution of 1600x900 when the native is 1920x1080. In display settings it says the monitor is 'Unknown' but when I run get-edid | parse-edid it does ...
BerimboloAlex's user avatar
4 votes
1 answer
7k views

monitor calibration on 20.04?

I have been searching, but I have found nothing conclusive, about which colourmeters are supported by Ubuntu software? Anyone with experiences in monitor-calibration on 20.04? Any hint will be ...
garups's user avatar
  • 51
1 vote
1 answer
209 views

How does ubuntu 18.04 (gnome) autodetect monitor changes?

In Ubuntu 18.04, when I dock my laptop, the monitor layout gets assigned to the previous configuration I had when the laptop was undocked. Recently I changed distro & desktop environment and I ...
orestisf's user avatar
  • 148
2 votes
0 answers
292 views

Dual monitor setup with portrait monitor - How to turn off artificially larger screen?

I think I'm turning slightly mad with this problem. I can't seem to find any other questions or solutions regarding this, yet it seems like a scenario a lot of ubuntu developers would have encountered ...
Paul's user avatar
  • 21
0 votes
2 answers
471 views

display not working after Ubuntu splash screen

18.04 on an Asus Z97. On boot, the monitor works fine and gets as far as displaying the Ubuntu splash screen (Ubuntu plus the dots). After that the display loses the signal. I have vino running and ...
Rob190's user avatar
  • 1
1 vote
0 answers
77 views

Xrandr stopped detecting motherboard outputs

I have a PC with dual boot windows-linux. I allocated 500 unallogated GB from the ubuntu disk to windows, and this screwed up my ubuntu installation. I managed to get it working again, but here's the ...
Federico Olivieri's user avatar
1 vote
0 answers
1k views

How to duplicate display on external monitor?

I have connected my Dell Inspiron laptop with Lubuntu-20-04-lts-focal-fossa OS to an external monitor through HDMI port. But the xrandr does not seem to recognize it. It says HDMI-1 disconnected (...
SanMelkote's user avatar
4 votes
1 answer
9k views

ubuntu 20.04 how can i setup a dummy monitor so i can use vnc as a second screen and still be able to drag windows back and forth

so i'd like ubuntu to believe there is a second monitor attached. the main reason is: i'd like to be able to set vnc to monitor that screen and use various devices as a second screen. for instance ...
user246838's user avatar
2 votes
1 answer
336 views

How to optimise firefox for full HD wide screen? Webpages often are centred, search results constricted to 1/3rd of the screen width

As you can see, the Google results uses only 1/3rd of the screen width. Often the case with many websites as well. Any fix to optimise Firefox and Chrome to render the pages for Full HD monitors.
Confguy2016's user avatar
0 votes
2 answers
214 views

Set custom resolution which is not native from monitor

It's possible to set custom resolution screen which is not my monitor native? Ex: My monitor is 1366x768 and I set 1920x1080.
Jorge Luis Santana's user avatar
0 votes
0 answers
1k views

Applications and games opening on the wrong monitor

As the title states whenever I open any application or particularly steam game, it will open on the wrong monitor. My secondary display is on the left and the main monitor has been set to main in the ...
Cameron's user avatar
  • 11
3 votes
2 answers
1k views

Ubuntu 20.04 - Disable laptop built in monitor slows down the system

I am trying to connect my laptop to two external monitors and disable the built in monitor, in order to work only on the two external monitors. However, when I disable the build in monitor, all the ...
Volscente's user avatar
0 votes
1 answer
713 views

My BenQ PD2700U does not work with Ubuntu 20.04

I am trying to use a BenQ PD2700U with Ubuntu 20.04 and it doesn't work at all. It is connected to an HDMI port. I am new to Linux. What might be the problem, and how can I fix it? Thanks in advance.
Fernando's user avatar
0 votes
1 answer
3k views

Why is my laptop screen flickering uncontrollably on Ubuntu 20.04?

This issue is best illustrated visually, hence I created a recording in the form of an GIF of my laptop screen flickering hectically. The flickering doesn't seem to have a pattern associated with it - ...
Mateja Petrovic's user avatar

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