Questions tagged [multiple-monitors]

Questions about multiple monitors (Including projectors), how to configure,customize, and troubleshoot, etc.

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17 views

GDM3 Crashes system when external monitor connected with Wayland

I installed Ubuntu 21.04 today and would like to use it with my external monitor. However, I have discovered that connecting the monitor before startup made the system hang at the purple login screen. ...
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x11vnc with virtual display causes window trail

I'm using x11vnc on my ubuntu 20.04 to connect my tablet to my virtual display, which I created with xrandr as follows: xrandr --newmode "2000x1200_60.00" 201.50 2000 2136 2352 2704 1200 ...
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29 views

Connecting multiple monitors through USB C adapter

I am using a USB C adapter with my laptop which has Ubuntu 21.04 installed. I am only able to use one HDMI cable at a time and cannot connect two HDMI cables at once. I am able to connect multiple ...
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Fullscreen videos too big on multiple monitors

So I have a 3 monitor setup. One 4k monitor as my main monitor, and two 1080p monitors. When i watch a video on fullscreen through any site or even downloaded locally, on my 4k monitor, everything ...
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Boot logs? Where can I look to figure out why my system will boot dual monitors with an OEM kernel but not any others?

Related to this topic: Why aren't the stock and mainline kernels supporting Intel onboard graphics when the 20.04b kernel does? Z590 motherboard 11th gen i9 11900k My new 11th gen i9 will boot to ...
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10 views

Error loading multi-monitors extension

I've tried installing the extension by running sudo apt install gnome-shell-extension-multi-monitors, reloading the shell, then enabling it via gnome-tweaks. However the enable button is greyed out ...
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27 views

4k display stuck 1024px

I have a Acer XB280HK and a dell Precision 3520 laptop. When try to use the external monitor on Ubunt doesnt exceed 1024px resolution. Below is the output of xrandr Screen 0: minimum 320 x 200, ...
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gnome shell crashes on hirsute when plugging external monitor

XPS 13-9300. Ubuntu Hirsute, 5.11.0-16-generic, gnome 3.38 on Wayland. I've also disabled pulseaudio in favour of pipewire as per this guide. The problem didn't occur on 20.04 (also with Wayland) or ...
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21 views

Laptop cannot go to sleep correctly, after removing the hdmi cable from the TV

I often hook up my laptop Acer Swift 3 to my TV screen to watch movies. When I remove the HDMI cable, closing the lid of my laptop (putting it to sleep), and then opening the lid again I always get ...
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22 views

Open application on current screen when using multiple monitors

Currently, I have two monitors that expand my workspace, one native from my laptop, that I use to control some applications (Spotify, Google Meets), and the other is external, which is used for ...
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48 views

Ubuntu 20.04 - USB-C to DisplayPort and issues with kernel log

I'm trying to connect a DisplayPort monitor on a laptop through a USB-C connector. However, it does not work. I'm using Ubuntu 20.04, uname -a: 5.8.0-50-generic #56~20.04.1-Ubuntu SMP Mon Apr 12 21:46:...
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Issue with built-in and external displays

I use a laptop with Ubuntu 18.04.4 and Intel® HD Graphics 5500 (BDW GT2). Normally I use one or two external monitors. In one setting one monitor is connected via HDMI another via VGA. External ...
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Ubuntu 20.04 Not Showing 144hz Screen. Capped at 60FPS. For OVERWATCH

I've bought a new Monitor (27" SAMSUNG ODYSSEY G5 1440p 144hz) and I only use Ubuntu 20.04. I primarily play OVERWATCH which is what I'd like to experience in 144hz for the first time ever. I ...
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27 views

Rubber Band Offset On Main Screen

I am encountering an issue where my cursor selection, on desktop, has an odd width offset: You can see here where the cursor is vs where the selection ends, with an width offset: My system has 2 ...
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custome xrandr display resolution on Radeon RX Vega 7 - Renoir [1002:1636]

I have recently bought an ThinkPad P14s Gen 1 with AMD Ryzen 7 PRO 4750U and integrated AMD Radeon RX Vega 7. graphics card. installed ubuntu on it and I was extremelly happy with the ...
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29 views

Scaling does not work separately for different monitors

I have two monitors (internal and external), external one has a much higher resolution compared to my internal one. If I don't scale, because of the resolution difference, the bigger screen does not ...
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1answer
22 views

Can't turn off external screen with gnome-shell

I'm using a Dell XPS 13 laptop with a noname USB-C dock for an external HDMI screen. Nearly 100% stock Ubuntu 20.04 with Xorg, Gnome-Shell, and kernel 5.8. Everything works fine, unless I want the ...
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Second monitor is not working when I open system options (20.04 LTS)

I have a strange problem for which i can't figure out what is going on. I want to connect my laptop (Dell Latitude E7470 with Ubuntu 20.04 LTS) to an old VGA monitor I have. To do this i'm using an ...
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23 views

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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32 views

One of my Dell Monitor becomes Synaptic Inc 24'' on Ubuntu 18

please excuse me if I did not post this question on the right website since I'm not sure this issue is caused by Dell or Ubuntu. I have Dell laptop (Precision5530) running Ubuntu 18. I have 2 external ...
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43 views

Second screen artifacts/flickering Ubuntu 20.04 & NVIDIA 1060

I can't seem to solve this issue, after getting a super ultrawide (5140x1440), my second monitor started having screen artifacts/flickering. It's completely random and I can't easily duplicate it, but ...
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How to show launch bar on some screen but not all

I have 4 screens in my build and i would like to show launch screen on some screen, but not all. Only on 2 of them for precision. I could find how to show on one, or on all, but not some, does someone ...
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Displaylink don't work if I close the lid of my laptop

I'm desperately trying to get my XPS 13 9350 (bios rev. 1.13.0, Ubuntu 20.04, kernel 5.8.0-50-generic) to work with my Dell 6000 dockstation and the two attached -- via displayport -- MSI Optix AG32CQ ...
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36 views

HDMI output detected but no signal under Kubuntu

I am using Kubuntu 20.04. I have dual boot and used an HDMI TV to extend the screen, worked perfect so far. However, when I switch to Linux, the HDMI display does not receive signal at all (Displays ...
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32 views

unknown display second monitor stays black and periodically flashes

Hello I am having a problem with my dual monitor set-up my primary screen works good but my second screen stays black and periodically flashes (less than a second) Ubuntu display setting Both displays ...
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92 views

Issues with fractional scaling on Ubuntu 21.04 with multiple monitors

I just installed 21.04 to see if it can handle my display layout better than 20.10. I had issues with the displays not understanding their borders when rendering menus or maximizing windows. This ...
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19 views

How to get external monitor to reconnect after sleep or power off

Using a laptop, when I sleep or disconnect power to my external monitor, after I power up (from sleep or just power up the external monitor) the display doesn't come on. The only way I've found to get ...
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82 views

How to turn off laptop screen when lid is closed and connected to external monitor

So sometimes when I connect my laptop to a monitor I like to use both screens at the same time but sometimes I just want to use the monitor. However when I close my laptop screen, my cursor can still ...
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1answer
16 views

How not to maximise windows across monitors on 20.04?

For some reason Ubuntu 20.04 is maximising windows across my monitors which is really frustrating. I would like it to only maximise windows within the monitor how can I do this? This question is the ...
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39 views

Hyper-V - 'Use all my monitors' - Change display scale

Context I installed Ubuntu 21.04 in a Hyper-V VM on Windows 10. It appears to be working great! I then followed the awesome directions here: How to install Ubuntu 20.04 on Hyper-V with enhanced ...
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21 views

NVIDIA Prime auto switch on multiple monitors

I am new to Ubuntu (used to other distros). I have a XPS15 with a GeForce GTX 1650. I want to use my laptop with another 4k monitor (in sum an external 4k monitor, and the laptop monitor is also 4k). ...
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35 views

KDE-Plasma does not look like it should

Ubuntu version: 20.04 I have been using RHEL for long time form server purposes (mostly only text), but I'm newbie in Ubuntu for Desktop daily usage. Previously I had original gnome and installed KDE-...
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27 views

Connecting a third monitor to System76 Ubuntu laptop

I have a System76 with an HDMI port, which I currently use for a second monitor. Ideally, I'd like to connect a third monitor and then turn off the laptop's screen as it's not great for my posture. My ...
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20 views

External monitor does not wake up from standby

Notebook is an acer ryzen 4000 series, integrated AMD GPU ubuntu 18.04, 20.04, 20.10 monitor plugged via hdmi-dvi cable problem is cannot wake up monitor when connecting to hdmi-dvi cable. i need to ...
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148 views

Ubuntu 20.04 doesn't work with thunderbolt 3 docking station and multiple monitors

I have ubuntu 20.04 installed on my Dell XPS 13 9350. I'm running kernel 5.8.0-50-generic. I recently got a Thinkpad Thunderbolt 3 dock gen 2 docking station. Connecting the dock station to the laptop ...
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1answer
84 views

How to use more than two monitors on Lubuntu 20.10

Today I installed Lubuntu 20.10 and immediately noticed an issue, it can only recognize one external monitor at once. I have a big hub with a bunch of USB ports and a couple of DisplayPorts. When I ...
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41 views

DisplayLinkManager High CPU usage

I am currently experiencing high CPU usage when ever I'm using my Thinkpad USB 3.0 ultra dock that has a screen connected with DisplayPort. I also have another screen connected with a HDMI cable ...
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28 views

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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How to make Activities overview only shown on current monito?

I am using two monitors, one at the left for screen-recording, another primary at the right for other work. It works fine but when I hit Super key, the Activities overview is shown on the left screen. ...
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1answer
96 views

Not detected second screen after update, Quadro RTX 3000 Mobile , Lenovo hinkpad p15 g1, Ubuntu 20.04

Hello I have troubles with my laptop detecting the external monitor. I am using Lenovo thinkpad p15 G1. The external monitor is connted through HDMI. Until an update (sudo apt-get update) it was ...
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1answer
86 views

Multiple Displays: Only two of three displays are available

I was using a built-in monitor of my laptop and two external displays connected to it installed with Ubuntu 20.04 LTS. I had to reinstall OS for some reason. After re-installation, only two monitors ...
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42 views

Why isn't my Ubuntu displaying on my dual monitors when I'm using usb-c? Is there something I can download or run on terminal?

Why isn't my Ubuntu displaying on my dual monitors when I'm using usb-c to dual HDMI? Is there something I can download or run on terminal? The monitors are being shown however, the display on the ...
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21 views

External UPERFECT Monitor Laggy Over USB-C but Fine Over HDMI

I have a UPERFECT MDS-156G16 1080p touchscreen monitor. When connected via Mini-HDMI to my ThinkPad P14s running Ubuntu 20.04, the screen is smooth and works great. When connected to the same computer ...
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31 views

Multiple issues: Not regnizing second monitor, authentication failed & no Power Off

I am facing three issues with my Ubuntu 20.04 installation on a laptop All a sudden my OS has stopped recognizing my second monitor connected through HDMI. The following login screen appears up ...
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64 views

Can't drag icons from second display

I'm currently using a laptop with Ubuntu 20.04.2 LTS, GNOME Version 3.36.8. I have a monitor connected to my laptop. I can freely drag and move icons across my desktop on the main laptop display, but ...
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80 views

How to enable a daisy-chained DisplayPort monitor via USB-C?

I'm running Xubuntu 20.04 on an HP Elitebook 845 G7 which has an AMD Ryzen 7 PRO 4750U with Radeon Graphics. I've been trying to use two daisy-chained DisplayPort monitors (Dell P2421DC) connected via ...
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31 views

KDE - Global Menu - Dual Screen

Hello askubuntu Community, I use a Plasma 5.21 setup that includes a global menu sitting in a topbar. It works perfectly fine, except when I move a window to the second screen. When I do that the menu ...
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1answer
24 views

Screen brightness turns to the minimum when I try to change it

I have a dual monitor setup, one is my laptop's screen and the other one is a normal monitor. When I start up Ubuntu everything's fine, but when I try changing the brightness of my laptop's monitor (...
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65 views

Dual monitor not detected after update in Ubuntu 20.04

Some weeks ago, I posted this question: Second monitor not showing the mouse in Ubuntu 20.04 I had no answers, so I had to reinstall Ubuntu entirely for the second monitor to work again. Now, after an ...
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25 views

Display settings reset to default on login

So the basic problem is that when I log in to my computer, after about a second, both screens briefly go black and when they come back on, one monitor is disabled in settings and the other goes to its ...

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