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Questions tagged [monitors]

Computer monitors (i.e. screens or displays). For system/application monitoring, please use the /monitoring tag.

0
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0answers
9 views

Ubuntu dual-monitor issue (they both work, but not simultaneously)

I've recently installed Ubuntu 18.10. I've a dual monitor setup that works fine in my Windows, and it worked great in Linux right after installation. But after reboot, I can't make them work both at ...
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0answers
8 views

How to xrandr 4k with Intel 3000 HD Sandybridge?

Running the command below, I expect the external monitor resolution to be changed to 4K. Although xrandr states my desired mode as active, it remains 1366x768: xrandr --output DP2 --mode 3840x2160 --...
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0answers
63 views

Ubuntu 18.04 intel vga hdmi not listed

I have a Lenovo Y530 laptop running Ubuntu 18.04 with Intel graphics and nvidia. When I use nvidia everything is just fine. I can use external monitor and xrandr detects it. When I use Intel I ...
1
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1answer
38 views

obtain the manufacturer and product ID and serial number of the display

The goal is to obtain the manufacturer and product ID and the serial number of the display under the Linux platform. I eventually need to get this information in the program in C++. But I also accept ...
0
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1answer
43 views

Uniquely identify DP monitors for use in xrandr

I have 2 monitors plugged in via DisplayPort*, named DP1 and DP2. I configure them next to each other like this: xrandr --output DP1 --pos 0x0 --output DP2 --pos 3840x0 Problem: Sometimes, they are ...
1
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1answer
29 views

Laptop monitor as a server's display

I have connected my server through displayport-VGA cabel to my laptop but my Ubuntu 14 on laptop recognizes it as a view destination, not a view source. How can I revert it and get view from a ...
2
votes
1answer
49 views

How do I get the current focused monitor?

I'm using i3 as my WM with a Dual-Head setup. I have already mapped some keys to switch between workspaces on one of the monitors (Mod+Keypad 1..8) and I would like to use the same keybindings on both ...
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0answers
19 views

Apple 27" Cinema HD Display making Xorg slow to a crawl

I recently came across an Apple 27" Cinema HD Display, which is 2560x1600 and connects through DVI. I have a fairly powerful gaming PC, GTX 770 graphics card, i5-6600k, SSD, and 16 GB RAM. I ...
1
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1answer
174 views

Linux cannot detect 2560x1440 144z capability of Vega 64 [duplicate]

Using KDE Neon, a Vega 64, and a Pixio px277h, I have tried to manually make xrandr use the setting for 144hz because it does not seem to detect this properly. The monitor has 144hz capability, the ...
0
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1answer
45 views

Gnome3 can not set energy saving properties

Neither using the Settings application nor the command: gsettings set org.gnome.desktop.session idle-delay 120 Does have any affect on turning the monitor idle.
0
votes
1answer
89 views

Why is my linux screen blurry on my monitor but it isn't when running Windows?

I have a linux machine running Centos connected to two ViewSonic monitors. One is 22 inches and the other is 24 inches. I also have a Windows machine connected only to the 24 inch monitor pressing the ...
1
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0answers
53 views

color filter in linux display stack

is it possible to change the displayed color in a monitor, either in its open-source driver, or other middleware in the display stack of a linux system? i came across this question because i visited ...
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0answers
73 views

Screen goes blank if I turn it off and then on without X server

I'm in the process of running some Machine Learning algorithm that needs all my GPU. As such I want to leave it running during the night with X server off as to let all the GPU RAM available to my ML ...
6
votes
1answer
321 views

Xrandr problem trying to avoid broken display

Days ago I broke my laptop display by accident, the right side of the screen is damage but the most part of the left side is usable. I do some research trying to find a way to modify the dimension of ...
2
votes
0answers
113 views

Why does xdpyinfo and xrandr give different measurements?

I'm trying to calculate the size of my 2 screens together. Using xdpyinfo, I see the following: xdpyinfo | grep 'dimensions:' dimensions: 5120x1600 pixels (1355x423 millimeters) However, ...
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0answers
84 views

How to stop internal laptop screen from turning off when closing lid?

When closing my laptop, it turns off the internal screen, which moves all windows to the second screen. I realise that I could move all windows to a secondary workspace to not have them overlap the ...
1
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0answers
14 views

Issue All-In-One Inspiron 2310 Monitor Volume Keys

At the side panel from my all in one monitor, there are 2 keys for raising and lowering volume (see picture). After installing Ubuntu 16.04.03, both keys working proper but after the first system ...
0
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0answers
83 views

xrandr not detecting old monitor

Xrandr, nor any other program, is detecting my second monitor; as in, xrandr acts like the second monitor doesn't even exist when it's connected. I think it could be due to the fact that both the ...
2
votes
2answers
601 views

Force monitor detection, low level

My external monitor (dell) is not detected on my Asus Laptop if I switch it on only after I booted the laptop. The case similar to How to make linux detect/re-probe monitors with intel i915 driver?, ...
1
vote
1answer
726 views

“Custom” DPI on Linux Mint Mate

So it's known that Mate and Cinnamon desktop environments only allow the options "Normal" and "Double DPI" in user interface scaling, unlike Ubuntu which you can change with a slider. These two ...
1
vote
1answer
760 views

How do I use the KDE 5 monitor calibration tool?

I recently replace my laptop monitor and have noticed it's not as crisp as the only one / my external monitors. In KDE5 there is a "System Settings Module" called Gamma that supplies different test ...
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0answers
188 views

Turning off monitor as root, without xset

I have a script in /etc/acpi that runs when I close my laptop's lid. It turns off the internal monitor. It does this by export DISPLAY=:0 sudo -u toothrot xset dpms ...
4
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1answer
155 views

Can root test whether a monitor is connected?

I use a script in /etc/acpi to turn off the screen (xset dpms force off) when I close my laptop's lid. Now I want it to act differently when an external monitor is connected (set brightness to zero ...
1
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0answers
320 views

Blank screen after sleeping: hotplug event: connector link-state is BAD

In the past my laptop worked well, but for the past months I have had issues with the laptop screen not being able to wake up after certain events. Basically, after I suspend the laptop there is an ...
2
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0answers
266 views

“xset dpms force off” also logout from desktop

I'm using Arch Linux with Gnome as DE and lightdm as display manager. I have a keyboard shortcut with the xset dpms force off command for turning off the laptop monitor. When I execute this command ...
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0answers
255 views

Persistently bad screen resolution on BenQ display with Centos7

I'm running a dual monitor display with Cenos7 as the OS and Gnome 3.22.3 as the GUI. Graphics cards is an NVIDIA 1080Ti. I've tried following this post and this post, and still haven't been able to ...
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0answers
1k views

Ubuntu 16.04 can not recognize HDMI-monitor, but Ubuntu 17.10 can

Currently I am learning how to use Ubuntu, and while I am using Ubuntu 17.10. My HDMI connection to the Acer Monitor works perfectly fine. However, Ubuntu 17.10 has some problems about apt-get ...
0
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1answer
40 views

Debian monitor out of range after install

I've tried adding nomodeset to the boot options from grub at startup (press "e" etc...) but it doesn't work. I also tried adding vga=795 and although it did work it doesn't get saved plus it's ...
1
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0answers
68 views

Debian 9: Backlight Flash at Boot

I've just installed a fresh new Debian 9 LXDE into an ACER AMD Notebook and everything seems to be working fine. However, during the boot, there is an annoying Strong Backlight Flash (seems like a ...
3
votes
2answers
1k views

Debian 9: Backlight Brightness

I've just installed a fresh new Debian 9 with LXDE into an ACER AMD Notebook and everything seems to be working fine, except for the backlight brightness. During the boot, it happens the following: ...
0
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0answers
42 views

Monitors not working correctly

I'm having this problem that when I boot into Linux my monitors stop working. Everything starts up fine. When I reach desktop then after couple of seconds my monitor just loses signal. It doesn't ...
1
vote
1answer
3k views

After upgrading to 18.04 Ubuntu monitor is unknown

Have been running Ubuntu Mate 17.10 and just upgraded to 18.04 LTS. But after upgrading my monitor settings are all wrong and can't set the proper resolution. How can I resolve this?
0
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1answer
98 views

Gnome - Laptop Monitor Off when Lid Closes?

I'm running Gnome (Wayland) on Arch Linux. I have configured the environment not to go to suspend, etc. when the lid is closed. When I close the lid, the monitor turns off for a second or two (as ...
1
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3answers
180 views

Screen lag spikes when WiFi on

I have a strange problem: Whenever WiFi is turned on (doesn't matter if connected or not), my screen freezes for a few frames every ~2-3 seconds. This does not affect the cursor, but everything else. ...
2
votes
1answer
1k views

How to make linux detect/re-probe monitors with intel i915 driver?

I have a laptop running linux with nvidia optimus/intel hybrid graphics where all outputs are connected to the intel card. It is driven by the i915 driver. An external monitor or beamer is discovered ...
0
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0answers
335 views

Turning off screen

In Arch Linux, is it possible to turn off the screen without going through xorg (with xset dpms force off)? I have seen that sudo vbetool dpms off is supposed to work, but it does not on my system (...
2
votes
0answers
218 views

How to switch HiDPI application resolution without restarting them

I am running GNOME 3.26 with GDM on X.org. I have an external monitor at work and I am running my Laptop (Dell XPS 9550) and the monitor in about the same resolution (regarding dpi; both around ~...
0
votes
1answer
20 views

Everything tearing other than background image with 3 monitors

So here is my problem: System Info Displays -Display- Resolution : 9600x2160 pixels Vendor : The X.Org Foundation Version : 1.18.4 -Monitors- Monitor 0 : 1920x1080 pixels ...
1
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0answers
169 views

ubuntu 17.10 detects larger monitor than it is

I have my pc connected to a 42 inch LED TV and ubuntu 17.10 detects it at 52 inches. therefore I do not see all the elements of the desktop. xrandr shows me the following: Screen 0: minimun 320x200,...
3
votes
1answer
386 views

Connect a Mac thunderbolt monitor to a DELL computer running on Arch Linux

I want to have a dual screen, with the screen of my laptop + the Mac thunderbolt monitor. I connect the Mac thunderbolt monitor on the DisplayPort of my DELL Latitude E7440 running on Arch Linux/...
2
votes
0answers
370 views

Configure external monitor with MacBook Air

I have a MacBook Air (13-inch, Early 2015) and I run Ubuntu 16.04 on it. Under Ubuntu I cannot detect the external monitor with the thunderbolt cable. Settings -> Displays doesn't show any other ...
1
vote
1answer
199 views

Multiple monitor with virtual gap between them

I'm having a problem with my system for some time. I've been hitting this problem for some time. I looked for people with a problem similar to mine but found none. I use 3 monitors in portrait mode ...
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0answers
987 views

Fix resolution on second screen in a dual monitor mirroring setup by adding black bars

I have a monitor connected to my laptop. The monitors physical resolution is 1920x1200 (16:10) while the laptop's built in display's is 1920x1080 (16:9). When I mirror the display I currently have two ...
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0answers
148 views

External monitor zooms out when lid is closed in fedora 27

I didn't have this issue in fedora 26, I always closed my lid, now this happens (Screenshots taken in fullscreen) lid open lid closed Similar I guess is this ubuntu bug, any solution? Edit: Lid ...
1
vote
1answer
541 views

How to get monitor width using xrandr --query?

I have a shell script, that loops through xrandr to find connected monitors, which get assigned inside of a variable. Inside that loop, I want to have another loop that determines the width of said ...
2
votes
0answers
552 views

New i5 Kaby Lake computer with Intel HD 620 booting to black screen

I just got a new Gigabyte Brix machine (https://www.gigabyte.com/Mini-PcBarebone/GB-BKi5A-7200-rev-10#ov). It has an Intel HD 620 graphics chip. I've been trying to install Linux on it but no luck. I'...
1
vote
1answer
372 views

Screen artifacts after the first boot

During the first boot the monitor whistles for a while, and the mouse pointer has a strange artifact: But after "Log out" / "Log in" - everything is fine. Any ideas what it can be and how to resolve? ...
3
votes
0answers
4k views

how to enable full resolution on large monitor (in KDE)?

I have a BenQ gw2765 monitor with 2560x1440 resolution... but my computer will only give it a maximum of 1920x1080 resolution. The monitor is connected to my Lenovo Thinkpad X1 laptop via an HDMI-...
2
votes
1answer
3k views

xrandr will not detect monitor on DisplayPort [closed]

I recently got a new ViewSonic Monitor and was configuring it to 144 Hz using XRandr. It seems I messed something up and now, I can't get my monitor to work using DisplayPort. Only HDMI works. This ...
2
votes
1answer
280 views

Determine resolution of a display on a remote systyem?

How can I determine the resolution of a display on a remote system. If I use xrandr it displays the resolution of my local screen: me@rome:~$ ssh -X road me@road's password: Welcome to Ubuntu 17.10 (...