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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xrandr panning with dual monitors

I would like to set up vertical panning on my laptop screen (eDP-1, native resolution 1920x1080), while using a secondary screen (HDMI-1) in its native resolution. Following this answer, I have tried ...
0 votes
1 answer
4k views

Connect Pop OS to TV using Miracast

I have been trying to find a way to connect my Pop!_OS to my TV using Miracast for quite some time. Tried to set up Miracast for straight 2 days but was unable to get it to work. I'm kind of ...
0 votes
0 answers
11 views

Display bmp image using u-boot on virtual QEMU

I have an issue of displaying a bmp image using u-boot on virtual QEMU. I've built QEMU using buildroot and added the following options in u-boot.fragement file to support splash screen and virtio gpu:...
0 votes
0 answers
10 views

Keeping display contiguration (with panning) after disconnecting external monitor from laptop

Setup Laptop: Lenovo Legion 5 15ACH6 (with Nvidia GeForce RTX 3050) eDP-2 External monitor: Asus ZenScreen MB16AH Monitor 15.6" FHD (connected via USB C) DP-1-2 Other Info The external monitor ...
3 votes
1 answer
2k views

Display xvfb output in remote PC

I have a Windows pc that I use to connect to my Ubuntu PC over ssh that I use as a server (18.04) that is connected only to the internet and power (No monitor). When I run glxgears -info I only get 8-...
7 votes
2 answers
13k views

xrandr three (3) monitors

I'm using Fedora 24 with 2 additional non-HDPI Dell monitors with my HDPI laptop (using thunderbolt 3 and daisy chaining the monitors with DP1.2) I am trying to get the 3 monitors to display nicely ...
0 votes
1 answer
26 views

KDE environment distro show black screen in my system

I fresh install Fedora with KDE in my desktop computer with ASRock motherboard and AMD Ryzen 5600G with iGPU and i made the bootable USB using balena etcher. When i update via terminal sudo dnf ...
0 votes
1 answer
12k views

xhost: unable to open display "desktop:0"

UPDATE 1: I am not using SSH. I am using a local machine. UPDATE 2: I restarted the X and notice that the Xauthority file that I am exporting to is actually being updated: $ sudo systemctl restart ...
2 votes
1 answer
2k views

Installing Nvidia drivers on rhel 8.6 with dkms but getting asm/kmap_types.h and drm/drmP.h errors in build

I'm trying to install the nvidia drivers for my T1000 Quadro on my Rhel 8.6 Lenovo p15. However I'm running into errors when trying to build and install the driver. System info? root:Downloads# ...
0 votes
3 answers
6k views

Monitor detected but with no signal in Linux Mint and Ubuntu

I have a Slimbook laptop with an external monitor (HP Elitedisplay E243) connected to it using HDMI. Suddenly, the monitor stopped working (it was at a system start). The monitor gets detected by the ...
0 votes
1 answer
26 views

Monitor power control on touchscreen monitor

I have a computer (Ubuntu) connected to a touchscreen monitor via a single USB-C cable. It provides video output, touchscreen abilities, and power. My goal is to have a systemd service use xset or ...
0 votes
0 answers
16 views

Grub menu not visible on TV (but working)

My question is similar to this one: GRUB Menu Not Visible To summarize, GRUB seems to be working in so far that it times-out after the expected 10s I set, and starts the expected default OS, but I can'...
0 votes
0 answers
178 views

No HDR option on KDE Neon plasma 6 - using iGPU instead of dGPU?

I installed KDE Neon about a month ago on my laptop (Gigabyte Aero 15XD) which have an HDR display and an Nvidia RTX 3070. I updated Neon to v6 recently, on Wayland, and hoped to enable HDR, but I don'...
0 votes
1 answer
46 views

Detecting if monitor is on/off

I want to detect if my monitor is on/off. This is because I need to record my screen time as an assignment. Numerous google searches haven't helped, as they return answers saying that it's not ...
2 votes
2 answers
3k views

Xorg and xrandr detect a connected monitor that doesn't exist

I'm on a laptop with no additional monitors connected, but when I run xrandr -q, the output lists two connected devices. Xfce's Display settings dialog also shows two monitors, and so does Xorg.0.log. ...
2 votes
1 answer
2k views

KMS Terminal: How to disable second screen, or how to force a certaion resolution?

I have two screens with different native resolution connected to my Gentoo/systemd machine. since the VTs try to mirror the outputs, they do not use the whole size of the higher resolution screen. I ...
0 votes
0 answers
73 views

How to make an unofficial Orange Pi 5 Mipi-DSI display work on an Orange Pi 5 Arch Linux system, given kernel driver source and .deb package?

For a while I've tried to make use of a display I ordered from Aliexpress to make it work with an unofficial 7Ji Arch Linux distribution for Orange Pi 5, to no avail. Perhaps against my better ...
0 votes
1 answer
25 views

HDMI port not detected in CentOS 7

I purchased a new Lenovo ideapad 3, Core i7 decent laptop with Linux Mint. Had to backwards install Centos 7 to run an AWIPS weather program. Now the HDMI external port to run an external monitor ...
1 vote
1 answer
1k views

"No X11 DISPLAY variable was set [...]" when using java.swing

When I'm trying to run a Java GUI application from the command line, I get: Exception in thread "main" java.awt.HeadlessException: "No X11 DISPLAY variable was set, or no headful ...
0 votes
0 answers
157 views

Failed to start Light Display Manager, stuck on black screen

I have been using Linux Mint for about a month. Today, I turned on my computer and first I got this error after the Linux Mint logo appeared. UBSAN: array-index-out.of-bounds in /var/lib/dkms/...
0 votes
1 answer
2k views

Xrdp session has wrong display screen size and aspect ratio

I am using remote desktop on a windows machine to connect to a CentOS 7 machine running a Xrdp server. Recently I had a problem with an application, where the avaialable openGL version (2.1) was not ...
2 votes
1 answer
5k views

How to enable xhost access from second user when display:0 is on first user?

Here is my situation: I have two (sudo) users on a machine: userA (created first on the machine. This is also where display :0 is attached) userB (created later) Being on userA I do: export DISPLAY=:...
1 vote
1 answer
5k views

How to install DisplayLink driver on LinuxMint 17.3

I have a USB 3.0 docking station connected with my laptop having LinuxMint 17.3. I can't manage to install DisplayLink driver on it. I could make it work with Ubuntu 15.04, but with LinuxMint it wan't ...
1 vote
1 answer
5k views

Multiple dummy monitors on remote headless Linux for VNC to local multiple monitors

I submit defeat. I have been trying to configure my remote Linux box to have two dummy monitors so that I can use multiple local monitors to VNC into it. I'm surprised that no one else has needed help ...
0 votes
0 answers
47 views

How to extend laptop to multiple monitor in linux?

I have Asus ROG Strix G15 laptop running Pop_OS and 2 FHD monitors, i want to extend (not mirroring) the display to those 2 monitors. What can i do to make it like the following: To make it so the ...
7 votes
1 answer
3k views

Mirror displays on Mint 15 login screen

I have the Mirror Displays enabled on my Linux Mint 15 Cinnamon 64-bit box, which has a GTX 680 graphics card installed with recommended drivers. I selected the top green one in this screenshot. ...
2 votes
1 answer
5k views

No GUI after reboot, no obvious errors (openSUSE 13.2, nvidia drivers)

Short version: Rebooted for the first time in months, following daily updates; proprietary Nvidia drivers; no GUI (KDE); no smoking gun (so far) in logs. Specs: openSUSE 13.2 (64-bit), fully up to ...
0 votes
1 answer
73 views

Custom Display Resolution Nvidia driver Pop!_OS 22.04 LTS

I'm trying to set a custom resolution for my primary display, one that the monitor doesn't advertise as available. On Windows I could set a custom resolution in the NVIDIA Control Panel, and then ...
0 votes
1 answer
2k 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 ...
0 votes
0 answers
13 views

lower resolution maintaining aspect ration with center feeting

I wanted to acheive something like what was implemented in Windows. Lower resolution of the display, without stretching, that is centered display, which was shown on the first image on Windows. But ...
0 votes
0 answers
54 views

Please Help Dual GPU Graphics Drivers Debian 12

I have decided to switch over to Linux after years of using Windows. I have a 6 monitor set up paired with a 3090 and RX 5700 XT, the only reason I use the XT is because the 3090 only supports up to 4 ...
2 votes
1 answer
2k views

Run Linux on iMac 2010 and use as external monitor ("Target Display" mode)?

Background: I perfectly installed Linux (dual-boot) on an iMac 2010 a couple of years ago. Recently I spent hours to figure out why the iMac was not running "Target Display" mode under ...
0 votes
0 answers
39 views

Can’t set up 4K resolution on new PC after cloning Linux Kubuntu SSD from laptop with Clonezilla

SOLVED! THE REAL PROBLEM WAS MY HARDWARE: I tried running Kubuntu in a live environment through my USB and I had the same problem (and in the windows setup then as well, but I didn't notice). After ...
9 votes
1 answer
495 views

Timeout to keep or reset settings when configuring displays

I'm using Ubuntu 18.04 on my Lenovo W540, and I want to connect three external displays to it through the "Ultra Dock" docking station, and not use the build-in display. According to the manual one ...
2 votes
1 answer
294 views

Pop os brightness stuck at maximum

So I've encountered this problem every time I installed linux on my laptop. I've asked it before here, but that didn't go well. Now I'v installed Pop OS (22.04) and I'm fully committed to it, it's not ...
0 votes
0 answers
2k views

Is it possible to scale two displays differently?

I am using Ubuntu-based PopOs 22.04 LTS and I have two displays. One is my built-in display which has 2560x1440, and another external monitor has a 1920x1080 resolution. I enabled Fractional scaling, ...
22 votes
2 answers
8k views

Why is Gnome fractional scaling 1.7518248558044434 instead of 1.75?

If I set 175% scaling in Gnome Settings, the value is saved as 1.7518248558044434 in ~/.config/monitors.xml: <monitors version="2"> <configuration> <logicalmonitor> ...
0 votes
0 answers
51 views

KDE Plasma Wayland cursor is malfunctioning

This is a fresh install of Kali Linux in a virtual machine following a package update & upgrade. I selected Wayland KDE plasma as my DE when I was setting it up. If this changes anything, my ...
0 votes
0 answers
28 views

Command that spits out exact display mode used? (Including DSC, chroma subsampling, etc.)

Are there any commands out there that will tell me something like: Current display mode: 3840x2160, 120Hz, 10-bit, YCbCr422 (DSC unsupported) Available display modes: * 3840x2160, 120Hz, 8-bit, RGB444 ...
0 votes
4 answers
3k views

Feh on auto start from rc.local ERROR: Can't open X display. It *is* running, yeah?

I'm trying to run my dotnet app from rc.local file. Where i start playing video(working) or show image slide show with feh player. If i run my scrip manually from bash is working how it' should. When ...
7 votes
1 answer
30k views

How to connect to a wireless display (my Smart TV) with Linux Mint

I'm new on Linux. I've installed Linux Mint 17 and I don't know how to connect wirelessly to my Smart TV. With Windows is so easy: connect to a wireless display -> select your device, done. How can ...
0 votes
1 answer
133 views

How to prevent my external monitor from turning off when the system is idle

When I'm using my laptop if I don't use it for a while, the laptop's screen goes off and the external monitor turns off by itself. I'm trying to prevent my second monitor from turning off, and I want ...
1 vote
0 answers
142 views

FreeBSD console resolution

I'm trying to get higher resolution on FreeBSD 14 while booting. I'm trying to match the same resolution I run my desktop in, 1280x720. I'm adding this to my /boot/loader.conf: efi_max_resolution=&...
0 votes
0 answers
20 views

Touch screen and external monitor: a ZenBook Duo - like setup?

I am using the Steam Deck as a daily driver since some time and i am pretty happy with it. If someone is not familiar, this is a pretty beefy (for normal tasks) handheld linux PC. I configured SteamOS ...
8 votes
2 answers
3k views

Xrandr problem trying to avoid broken display

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

Wrong display resolutions with amdgpu drivers

After using EndeavourOS's Arch distro in my laptop, I decided to install the same distro in my main computer. The computer has an AMD RX6600, and I figured out how to install the amdgpu drivers. The ...
0 votes
0 answers
49 views

Display works when U-Boot loads but not with Arch Linux ARM

guys. I installed Arch Linux ARM on my old Allwinner A31s tablet. I can use it via UART/serial console but I can't get the display to work. The tablet turns on, U-Boot loads and shows your submarine ...
0 votes
0 answers
96 views

Waydroid installation break config

I have followed the install instructions here : https://docs.waydro.id/usage/install-on-desktops. I use Debian 12 with Gnome 43.6 and X11 on Dell inspiron 15 laptop. After installation I figured out ...
0 votes
0 answers
79 views

Could not open display using Kubernetes service URL

I'm working on launching graphical applications on a k8s cluster. My configuration is the following : In a 1st pod, I running a X-server & a VNC Server spec: containers: - name: test-x-...
0 votes
0 answers
54 views

Running Linux Mint 20.1: HDMI max is 1920X1080 I want 2560X1440

I was using a DP output from a HP Elite Desk 800 G2:Linux Mint 20.1. My monitor (AOC) was on 2560X1440. It has 2 ports an HDMI and the DP. The DP has failed, the HDMI is good. I confirmed this by ...

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