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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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16.04 Delayed Recogntion of External monitor from docking bay

16.04 in a docked HP 8440p laptop recognizes the external displayport monitor at boot. The machine is often left on at night, however the monitor is turned off. In the past, the system would ...
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Screen scaling problem in 18.04 on 4k screen [duplicate]

My Ubuntu 18.04 came default with a screen scaling of 200% which is great, since everything is teeny-tiny if I set it to 100 %. However, not all programs seem to respect this setting; see for ...
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Changing tv to sole monitor

I am creating a media/retro gaming pc from and old Toshiba satellite c660 laptop. As I am rehousing the board I need to dispense with the laptop screen. The problem is I cannot stop the laptop screen ...
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Second Monitor is not working after “driver update”

My Acer monitor which is plugged into my Razer Blade 15 laptop is now not being detected in Ubuntu 18.04.1 LTS after installing an nvidia driver (sudo ubuntu-drivers autoinstall) I have no idea if ...
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How to connect my camera on my computer to see the image or video in direct on my monitor? [closed]

I try a lot of software and did not succeed ( I will elaborate on that latter). I want to make video to be use latter on a internet channel. I will need to see the image on the monitor of my computer ...
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52 views

Help with Scaling Apps on a High DPI Monitor? (3840x2160) (Ubuntu 18.04 LTS on Gnome)

I've recently been having problems with my High DPI (3840x2160) monitor and scaling apps on Ubuntu 18.04 LTS on Gnome. I've set scaling to 200% as you see in the photos below, but it doesn't seem to ...
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52 views

Tired eyes when using Philips 193v monitor

I decided to get used to Linux systems, but for some reason they make my eyes get tired (unlike Windows). My monitor (Philips 193v) The graphics card from the company Axel3D - Nvidia GeForce GTS450 ...
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fresh 18.04 upgrade on eeePC can't power off display

After upgrade to 18.04 LTS 32-bit on my eeePC 1015-CX (atom N2600) display can't power off, I try also to set 1 minute timeout.
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After Ubuntu 18.04 reinstall, monitor stops working

I am running Ubuntu 18.04 on an old Acer Aspire e1-470p pc (with Intel HD Graphics 4000 Graphics processor) connected to a Viewsonic VX2703MH-LED monitor by HDMI. I corrupted my boot options (...
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34 views

Installing DPMS extension on Ubuntu?

**Accidentally logged in on Ubuntu on Wayland which caused DPMS not to be enabled. My bad. ** I need to run a script in JS: exec('xset dpms force off', null); I'm running Ubuntu 18.10 and it doesn't ...
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How to switch which graphics card is used for video output

I have two graphics cards: A GTX 1070 Ti and a Quadro K620. I need to use the Quadro for my monitor output so the more powerful 1070 can be devoted to computation. Whenever I plug a monitor into the ...
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Ubuntu duplicates display for each graphics card (fresh install)

I'm on a mid-2012 macbook pro (model 10,1), and Ubuntu (18.04.1) thinks that I have two built-in displays. This is a fresh install, so there's no possibility that I've misconfigured anything I think ...
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How to change orientation of built-in display in Ubuntu 18.04? [duplicate]

I have a somewhat unusual setup for my computer at my desk: I use an HP Spectre x360, which I connect to an external monitor, which allows me to have two screens to use. Due to space limitations I ...
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21 views

How do I recongure ubuntu-18.04 for a new monitor?

I've updated my monitor. The machine boots, and I see the booting screen. But then it stops sending any video signal at all. I presume that it doens't know how to configure for the new monitor. ...
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I have to use xrandr after unlocking my computer

If I reboot my machine, the monitors are usually in the right order (not always). The Ubuntu display settings shows them backwards from what I think it should be, basically 1 is on the right and 2 is ...
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1answer
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Monitor problem

After installing Xubuntu, I was trying to adjust the resolution of my Compaq all in one computer. I made the mistake of clicking on the second monitor, wich is not existent. Now all I can see is the ...
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2answers
212 views

Dell XPS 13 UHD Screen + Monitor application scaling issues (Wayland and X windows)

I am using Ubuntu 18.04 on a Dell XPS 13 (2018) that has a UHD Screen (3480 x 2160), I am then connecting to a UHD Dell 34" Monitor (3440 x 1440) via a USB-C DisplayPort cable. All the screenshots ...
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38 views

wireshark monitor mode ethernet card Ubuntu

I read somewhere that is best to disable all protocols on the capture card to avoid the card itself sending and receiving any traffic, in Windows you can just uncheck all protocols on the card ...
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1answer
421 views

How to monitor Ryzen Temperatures on Ubuntu 18.04?

i found this post https://linuxconfig.org/monitor-amd-ryzen-temperatures-in-linux-with-latest-kernel-modules however the git repository they are using doesn't exist any more so i cannot try it. ...
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10 views

System hang after resume only if no monitor connected?

Ive found some crazy bug and specially for ubuntu server Installing ubuntu server 18.04 on braswell platform , testing with kernels 4.14.47 , 4.14.79, 4.16.3, 4.18.7 & 4.19.0 My server is resuming ...
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129 views

Software opens on secondary monitor (ubuntu 18.04 gnome)

I am using Ubuntu gnome, and software opens on the wrong monitor (even if I set the other as primary in settings, and with xrandr). This can be very very annoying when only one of the monitors is ...
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67 views

Ubuntu 18.04 stopped detecting second Dell monitor

I tried to switch of keyboard lights on my MSI - notebook, trying many combinations of fn + F1 - F10 (and other buttons). Sometime during this period, the second screen was disconnected. I could not ...
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Hot Plug event of gadget serial device using libudev

I am writing a C++ console application where I want to monitor and capture any hotplug events on only my /dev/ttyGS0 port. I am using Ubuntu 16.04 on my linux device (Boundary Device). I've been ...
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How to keep screen monitor resolution ( Led AOC 22") in 1440x900?

I am using Nvdia 340.107 version driver in Ubuntu 18.10. I never was able to keep monitor screen in resolution 1440X900, witch is fine for my eyes, since older version of Ubuntu, every time I reboot ...
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59 views

MAME on Ubuntu 18.04 is turning off DPMS / Energy Star monitor blanking?

MAME Arcade Emulator seems to be turning off DPMS screen blanking (Energy Star) which means that if I leave MAME running, my monitor never blanks. I can't find where in the source code this is ...
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55 views

Compile two Wifi drivers together

I have two drivers (let’s say A and B) for my Alfa Awus036ACH, which are "rtl8812au". The A driver supports very well mode monitor, but not the AP mode... The B driver badly supports mode monitor but ...
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246 views

Realtek RTL8812BU Support For Monitor mode and packet Injuction AND ad hoc?

Need to know Realtek RTL8812BU support for Monitor mode an and packet Injunction? IT support Packet injection ? monitor mode? IT support for FLuxtion (Evil-Twin Attack) ? i want to buy new use wifi ...
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73 views

Vitualbox - Ubuntu 16 144hz Monitor 1440p

I wanted to know how to set up my Virtualbox instance to support output at 144hz with G-Sync. I'm not sure what I would do to get this working withing Virtualbox as many questions address standard ...
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30 views

Xmodmap doesnt remember my settings

I need to map one of my key to other key and I do it with the following command: xmodmap -e "keycode 94 = a" but I need to do it everytime I restart my PC. Is there any other way? Why won't it ...
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16 views

Console (multi-user) Mode Overscans External Monitor

I've got Ubuntu 18.04.1 LTS on an old Dell Latitude laptop with a 27" external monitor plugged in. My resolution in the graphical environment works perfectly. I frequently use Ctrl+Alt+F3 to escape ...
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2answers
146 views

How do I shrink my monitor's size?

I would like a black, empty margin surrounding my entire screen, effectively turning a 24" monitor into a 20" one instead. My setup: Ubuntu 18.04.1 LTS Intel Graphics Xfce4 (I'd prefer a cross ...
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Use laptop as a second monitor

I've spent far too much time Googling this and haven't been able to find anything. I have a laptop and tower both running Ubuntu. I want to be able to use the laptop as a 2nd display to extend the ...
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1answer
133 views

Better sub-pixel rendering of fonts when monitor is in the portrait mode [duplicate]

When I turn the LCD monitor into portrait mode, the fonts rendering gives my head dizziness. There are numerous questions and answers for the case of Windows OS. Also, there are answers for gnome. I ...
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1answer
198 views

Actual Refresh Rate is 40Hz when Refresh Rate set to 60Hz in System Settings and xrandr

Here are 5 output lines from glxgears: 219 frames in 5.0 seconds = 43.674 FPS 201 frames in 5.0 seconds = 40.007 FPS 201 frames in 5.0 seconds = 40.006 FPS 201 frames in 5.0 seconds = 40.005 FPS 201 ...
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1answer
37 views

Monitor detecting poroblem [duplicate]

Ubuntu 18.04 Detects 2 monitors when I only have one. My monitor model is LG LG22MP68VQ-P. HDMI supported. I have to rearrange the settings to get the screen. Can anyone help me out?
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Ubuntu Server keeps suspending when external monitor is disconnected

I got Ubuntu server 18.04.1 running on a laptop with a broken display. Obviously, I Used an external monitor for the install Now when I disconnected the external monitor, the server suspends within ...
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What in Lubuntu would cause monitor to alternate Analog/Digital and stay in black screen?

I just installed latest stable version of Lubuntu from USB. Tested it first running off the USB and the interface worked but after I installed and restarted as it requested, it defaults to starting ...
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1answer
31 views

Screen out of the monitor, how to fix

The screen is cut out borders of the monitor. It doesn't give me problem with the vga cable, but when I use the HDMI it does this unfunny joke. I have no idea how to resolve, in windows there is a ...
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18 views

Graphics driver issue if system is powered on with monitor switched off

Curious issue that I'm hoping someone can shed some light on. If my monitor is either switched on (or in standby mode) and i power on my PC, happy days everything boots as it should. If my monitor ...
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After ubuntu upgrade to 18.04, my monitor does a refresh like old cathod tube monitor

I was using Ubuntu 16.04 and it came up the dialog to update to 18.04. It started updating, but apparently it failed at some point, because when i restarted the PC, it failed to boot. I made some ...
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1answer
65 views

Automatically turn on monitor at certain time

When I lock my session, the monitor turns off after a while. How do I set it up so that the monitor are scheduled at a certain time (i.e at 8 am) to turn on to show the lock screen ? Ubuntu 18.04
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1answer
50 views

Application like Windows Task Manager [duplicate]

Is there any program like Task Manager for Windows which can kill any full screen program (mostly Windows games I play through wine) when it got stuck and it don't want anything to come above it? I ...
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1answer
38 views

Can i make my 3 monitor set-up merge to a single monitor if the other two are not available

I currently work with a three monitor set-up (side by side by side) on an Ubuntu 18.04 LTS Desktop. I am presently upgrading some hardware that's not all computer related but want to get this sorted ...
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Ubuntu 16.04 window too small scaling issue

I am using a 4k monitor (thinkpad) with scaling x2. Certain program window are too small. How to fix this? thanks
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1answer
68 views

Portable monitors that work with Ubuntu/Linux

I was wondering if anyone had success in using a portable monitor on their Ubuntu system and if so which one? Edit: (More details) Specifically I was thinking something along the lines of https://...
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Problem with an external monitor and ethernet connection plugged into a displaylink on ubuntu 18.04

I upgraded my ubuntu distribution from 16.04 to 18.04. On 16.04, an external monitor (VGA plug) and the ethernet connection were working well. Since the upgrade, I obtain very strange behavior of the ...
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51 views

Ubuntu 18.04 Dual Screen Not Working on new Dell G5 15 in my main account

I installed Ubuntu 18.04 on my laptop. It was working very well with the nvidia drivers but suddenly (I don't know if maybe after an update) the dual monitor function stopped working in my main ...
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68 views

Login screen does not appear on my external monitor

I use an external monitor on my laptop while the internal monitor is broken, but the system still detects it as active. Even using the setting of the monitor as primary did not solve this issue. Is ...
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361 views

Ubuntu 18.04 Dual Screen Not Working on new Dell G5 15

I installed Ubuntu 18.04 on my laptop. It was working very well with the nvidia drivers but suddenly (I don't know if maybe after an update) the dual monitor function stopped working. My computer is ...
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17 views

Switch monitor order number

I have a problem with the "order" of the screen. Especially with the number for each screen given by the OS: monitor order screen The left (primary) one has the "order"-number 3 (displayed on the ...