Questions tagged [display]

Questions regarding the display(s) attached to a unix or linux machine, the DISPLAY environment setting, the ImageMagick display tool or (along with X11 tag) remote display redirection

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5 views

Disabling extra monitors from “fake” X11 sessions

I have 3 NVIDIA GPUs in my system. One is used for display, and two are used for compute. I would like to adjust the fan curve for the two compute GPUs, and from what I know all current methods ...
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1answer
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+50

An attempt to switch to a doublescan X11 modeline fails with “Configure crtc 0 failed”

I have a modern 1920x1200 LED display, capable of up to 96 kHz HorizSync, up to 76 Hz VertRefresh, and up to 205 MHz pixel clock. Apart from its native resolution, the display can also run in ...
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9 views

xrandr --pos not working for external monitor

I want my external 4k monitor on the left and my internal FHD laptop monitor on the right, scaled accordingly. I have written a little script to help with that, and it worked on my previous machine. ...
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24 views

Xauthority for python plotting in a docker container

I'm trying to understand how to run a docker container with an X11 server running in it so that I can do visualizations when I write some python code, and found lots of answers out there. I found many ...
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Mini DisplayPort 1.2 to DP 1.2 on Dell monitor not working

I have a laptop (TUXEDO Book BC1510) with 1 HDMI and 1 Mini DisplayPort 1.2 running Pop!_OS 20.04. Pop is an Ubuntu derived distro by System76. This is in "About": i7 9750H Mesa Intel UHD ...
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20 views

Speeding the initialization of the X.org server, greeter, and session

Background I am currently experiencing a long "startup" time on my machine (and was well before gorilla): .-/+oossssoo+/-. sterlingbutters@butters-ubuntu `:...
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1answer
52 views

How to check the laptop ID for the LCD panel manufacturer?

How can I know the brand/model of the display used in a laptop? I have been roaming with dmidecode but I haven't found that information.
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1answer
26 views

Pop!OS 20.04 - Glitched screen instead of login screen

I am running Pop!OS 20.04, on an Asus Tuf FX505DU with an Nvidia 1660TI, and sometimes when I boot up the OS, instead of the login screen I get a glitched screen (horizontal bars of pixels of ...
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0answers
27 views

How to add a fake display for X?

What I wish to achieve? I want to add a fake display for X server. I don't need it to be displayed. I just want it to run in the background and make X feel that there are two displays attached to my ...
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0answers
130 views

HDMI input not detected on Debian 10

I am running Debian 10 Buster on an an hybrid laptop with the following GPUs: $ lspci | grep -E "VGA|3D" 00:02.0 VGA compatible controller: Intel Corporation UHD Graphics 630 (Mobile) 01:...
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280 views

Evince: Unable to init server: Could not Connect: Connection refused

When running $ evince a.pdf I receive the following error message. No protocol specified Unable to init server: Could not connect: Connection refused Cannot parse arguments: Cannot open display: I ...
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1answer
32 views

size of display connected via HDMI was'nt automatically detected correctly (xUbuntu)

I have xUbuntu 18.04.4 LTS (XFCE 4.12 + 4.15.0-111 Linux kernel) on the Dell Vostro 3360 laptop. When I connected the external display (Samsung SyncMaster T240) via VGA cable - all is good and I got ...
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1answer
135 views

How to add keyboard layout in dwm

I want to add additional language input to my linux. I am using MX Linux and DWM desktop environment. How can I do this?
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1answer
374 views

DISPLAY environment variable not set

I am using a Amazon Linux 2 (a Fedora/Cent OS like distro) EC2 machine with the Deep Learning AMI (Amazon Linux 2) Version 30.1 AMI. I want to use xclip and gedit in the remote instance. But if I type ...
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12 views

Opensuse failed to load x display manager

Running opensuse and recently updated the nvidia driver along with a couple other things. Now I get a failed to start x display manager. Reinstalling the driver doesn't fix it, and I'm unsure how to ...
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27 views

Can't get to 4096x1440 resolution

I'm trying to set up a X220 ThinkPad (Intel HD 3000) with a 5120x1440 monitor. For some reason I can't figure out there seems to be a limit where I can't reach 4096x1440. For reference, I'm using the ...
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disable gestures from touchpad running centos8

I have a Panasonic fz-g1 which run centos8 with gnome UI. I trying to set it to run a single application on full screen. When swiping with 2 fingers from top to middle of the screen the app is ...
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2answers
191 views

How to have a seamless custom JPG image splash screen when GRUB starts, the kernel boots, etc. until a GUI app starts?

On a standard Debian, how to replace everything that is displayed at Linux boot by a custom JPG or PNG image, until a Python app with GUI starts? Is there a generic way to replace the boot messages ...
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0answers
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Can't setup dual monitor in Debian!

I just got a new laptop and decided to try Debian on it, currently tracking "testing" repositories. It has both an integrated Intel GPU and an NVIDIA GPU. I installed the non-free "...
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0answers
27 views

Second screen is recognized by xrandr but stays black

After two weeks of not using my machine I have the following issue: I have two connected screens The second one (Apple screen) is connected and recognized by xrandr, but stays black. If I change the ...
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1answer
114 views

Some apps (zoom.us) have incorrect scaling on eDPI (1080p) screen but not HDMI (1440p) screen

I use two screens: my laptop screen (eDPI-1, 1920x1080) and my external monitor (HDMI-2, 2560x1440). All my applications render just fine on both, at the resolution I would expect, with the sole ...
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1answer
14 views

Application permanently launches with transparency applied. Where can I find the configuration causing this behavior?

Generally, where do I find configurations that might be causing this & how do I debug such an issue? In this specific case, the main thing I did that could have caused this is using transset-df ...
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0answers
55 views

How to add authorized client to xhost?

Om a linux machine (In this case Debian), when I use the xhost command as follows: $ xhost + access control disabled, clients can connect from any host $ xhost - access control enabled, only ...
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1answer
52 views

Ubuntu, detect new display

Running Ubuntu based Os on my Laptop, I have an external HDMI display that is not detected. I tried lspci and xrandr but the display stay "disconnected". How can I detect the display and extend my ...
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0answers
11 views

Adding external monitor to Oracle Linux 7.3 laptop

I installed Oracle linux on to my laptop Dell latitude e5270 (i3-6100u). I wanted to use an external monitor with the laptop but connecting one using VGA or HDMI will not work. xrandr command will ...
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0answers
33 views

Dual screen on Pop_Os

Running Pop! 20.04 on HP 850 g5. I would like to connect a second monitor IIYama ProLite E2482HS but this one is definitively black. The displays settings does not detect it. xrandr does not show a ...
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2answers
98 views

How do I correctly (re)set $DISPLAY?

I connect from a Windows PC to a Linux PC with ssh using MobaXTerm. Within the ssh session, I have a tmux session with a few windows and panes. The ssh session will typically disconnect after a few ...
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0answers
37 views

Cannot drop from 144Hz to 60Hz in Archlinux

I have a recent XMG core 15 laptop with a 144Hz display. I have a dual-boot Windows10/Archlinux installed and both OS report the refresh rate of the screen being 144Hz. While this is great for gaming, ...
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1answer
57 views

How to specify display to stream using v4l2loopback?

I have a setup with 2 monitors. I'm on Manjaro, I installed v4l2loopback from AUR (here is github link: https://github.com/umlaeute/v4l2loopback)and it works great, no problem there. But my question ...
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0answers
24 views

Linux Kernel 4.20 LCD MIPI DSI Display

I have a bananapi m2m board that I have connected to a BananaPi 7-inch screen using the MIPI DSI Connector. I have not been able to produce a video signal on linux kenel 4.20. My distro is archlinux-...
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0answers
15 views

Display issue prevents opening GUI in Debian 10

I updated my OS to Linux Debian 10 from 9. And I'm having a big issue when trying to start any graphical interface. I get the message: "cannot open display". I worked out in the OS updates already. ...
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0answers
174 views

Type C to HDMI not working on Linux Mint 19.3 Cinnamon

Has anyone found a solution to this issue? I've recently installed Linux Mint alongside Windows on a Lenovo T480 and while the Type C port works with an adapter to HDMI when using Windows, Linux Mint ...
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0answers
10 views

Increase system font sizes in Chrome running on Sway

I recently started using Sway on a high resolution 4k monitor and have been experiencing eye strain as a result of the small system fonts. I can increase the page zoom size, but built in system font, ...
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1answer
37 views

Scaling bugs in Debian 10/KDE - how to increase the size / zoom of apps instead of scaling the display?

In Debian 10 stable with KDE changing the scaling under the display settings has a lot of bugs. For example the tabs in the bottom panel are too large and have a font-size that's much too large so ...
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0answers
17 views

Monitor cannot recover after switching off at maximum resolution when using nouveau driver

I'm using Arch with Wayland-based Sway window manager, which does not support nvidia proprietary drivers, so I am forced to use nouveau. Everything is fine, except one thing. If I switch my monitor ...
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0answers
112 views

How to recover screen brightness in Fedora 32

I have a lenovo T400 laptop pc and was offered the option (by the software program) to upgrade from Fedora 31 to Fedora 32. That seemed a good thing to do so I did it. Since F32 has been running I ...
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0answers
219 views

Xorg Can't open display error and run startx on local with another user on boot

I have some trouble setting up a HTPC with Debian 10 (k5.4) and as i'm not a linux expert i wonder if can anybody help me with some questions. To understand the context I've build a tiny passive ...
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0answers
68 views

fedora31: cannot open display:: 0 without ethernet

I use as a window manager i3, lightdm and other graphic display manager disabled Starting with Fedora-31, executing "nm down ethernet" causes the graphics programs to stop running: Cannot open ...
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0answers
46 views

Linux mint lightdm not showing taskbar after logging in?

I am running Linux Mint 19.3 Cinnamon. I have been running with the lightdm interface for the last two weeks without issue, however this morning when I booted with lightdm it was stuck on the login ...
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1answer
164 views

Lower possible screen resolution on MX Linux than Windows

I'm running MX Linux and Windows on the same machine. I'm using an LCD television screen connected via HDMI to the graphics card (NVIDIA GeForce RTX 2070 SUPER). My problem: On Windows, I can select ...
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0answers
45 views

Fullscreen glitch / problem / blackout when using online video (Youtube, Netflix) on browser (Firefox, Midori, Chrome) elementary OS

I'm a bit new to linux environment but I did all the research I can before posting here. I will just go to the point. When I open a Youtube or Netflix video (and sometimes other fullscreen apps like ...
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1answer
779 views

Debian 10 [Buster]: HDMI Input Not detected

OS: GNOME 3.30.2 on Debian GNU/Linux 10 (64-bit) My laptop has no output from the HDMI port. The monitor shows "NO INPUT DETECTED". Previously I had Kubuntu installed and before that I had windows 10,...
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1answer
24 views

starting GUI application on other users display via roots cron

I'm trying to automate the connection of a VPN tunnel via cron upon system boot. I have a bash-script triggered by roots cron sudo crontab -e (because some other commands needs elevation). I'd be ...
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0answers
158 views

Windows in X session opening on wrong display

I want to solve a problem with Zoom's screen sharing (it conflicts with wayland and suggests using X). I can get Zoom to work, but the problem is that most but not all applications in the X session ...
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1answer
133 views

Xrandr doesn't detect HDMI port on the motherboard?

I am running Mageia 4.14 KDE. On a newly installed Mageia system I can't change the resolution for my monitors. I have One monitor hooked up to the HDMI port and other on VGA port. They both come up ...
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1answer
102 views

XF86-video-intel vs Modesetting for a 2nd Monitor [Manjaro]

I am trying to get an external monitor (Dell) working on my laptop (dell) via a ubc-c docking station (dell). and I am having some issue - Running on an up to date Manjaro (5.4.28-1) Basically while ...
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42 views

Ubuntu 18 & Thinkpad Dock - External Monitor available rate not working

Running Ubuntu 18, on a Thinkpad E590, connected to a Thinkpad USB-C Dock, which is then connected, via DisplayPort to an Ultrawide monitor. This monitor's native resolution is 3840x1600 @ 60hz. ...
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0answers
18 views

Screen splits in a Toshiba laptop: how to fix it?

I have this weird issue: when I start my Toshiba laptop the screen gets split in three. It does not happen always, but happens very frequently. To fix it, I restart/turn-off the machine until it gets ...
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1answer
277 views

Invalid MIT-MAGIC-COOKIE-1 Error: Unable to initialize GTK+, is DISPLAY set properly?

I'm having this problem on my Debian box (Buster). Whenever I run the command sudo ./FreeFileSync I get the following error: Invalid MIT-MAGIC-COOKIE-1 key10:24:17: Error: Unable to initialize GTK+,...
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0answers
80 views

ElementaryOS Workspaces with dual monitor setup

I am having a really hard time getting a good dual monitor setup on my distro (Elementary OS 5.1.2). My current setup is: notebook placed on my desk in a normal way, ideally it's screen would be ...

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