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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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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. ...
wchargin's user avatar
  • 1,091
6 votes
0 answers
2k views

hwinfo --framebuffer shows nothing, can't change grub resolution

I am using a Lenovo Yoga C940 15" with Fedora 34. It has a 4K screen with an nvidia gtx1650 mobile card and integrated intel graphics. I wanted to change the resolution of the GRUB menu because ...
Nicholas Stommel's user avatar
6 votes
1 answer
596 views

How to repair Colors problem in Chrome

Black colors and shadows in videos on Google Chrome have a problem, I don't know how to phrase this problem in words properly so watch these screenshots from the same video on same pixels (360p) using ...
A.Rahman Mahmoud's user avatar
6 votes
0 answers
4k views

How do I make Xorg completely ignore one of my display adapters?

I use Linux Mint on an x86_64 machine with the following display adapters and X server: # inxi -G Graphics: Card-1: Intel Xeon E3-1200 v2/3rd Gen Core processor Graphics Controller Card-2:...
einpoklum's user avatar
  • 9,535
6 votes
1 answer
1k views

Due to a broken monitor, I need move my screen to the left

A fraction of the right side of my laptop screen is broken, in order to use only the good part the resolution needs to be about 1280x1024, aligned to the left. A simple xrandr -s 1274x1080 will get ...
Alfredo Enrione's user avatar
6 votes
1 answer
9k views

Make Xorg ignore both nouveau and nVIDIA?

I have a system with on-board (on-CPU) graphics: (--) intel(0): Integrated Graphics Chipset: Intel(R) HD Graphics 4000 and an nVIDIA GTX 650 Ti. The on-board graphics is what feeds my display, and ...
einpoklum's user avatar
  • 9,535
5 votes
0 answers
10k views

Dual monitor confusion in Ubuntu Gnome 17.10

N.b. Since this is an issue on a machine running "Ubuntu +1 (alpha)", it's out-of-bounds on AskUbuntu, so I'm hoping for some help here. I encountered some odd screen behaviour this morning. I have ...
Dɑvïd's user avatar
  • 203
5 votes
0 answers
3k views

External displays not detected when connected through USB-C hub

I normally work with an external monitor connected by HDMI to a USB-C adapter. I also have a USB-C hub (Aukey CB-C48), tested working with another USB-C device. The monitor works fine when connected ...
Ohthehugemanatee's user avatar
5 votes
0 answers
2k views

How can I debug a custom LightDM greeter?

I am trying to create my own theme for LightDM greeter, concretely GTK's. I have compiled and installed the tarball, but any time I run lightdm-gtk-greeter I get this message: ** (lightdm-gtk-greeter:...
xvlaze's user avatar
  • 289
4 votes
0 answers
276 views

Prevent windows from moving when display sleeps on Wayland

I am using GNOME with Wayland, on openSUSE Tumbleweed, and an AMD GPU if relevant. I have multiple displays connected to my computer, including my TV via HDMI. The issue I am trying to resolve is that ...
Merritt's user avatar
  • 221
4 votes
0 answers
1k views

Wrong screen resolution sometimes after sleep, with Ubuntu

After my Lenovo T480s connected to a Benq 4k display wakes from sleep, my resolution goes to 1080p, unplugging and plugging the display back in resets it to 4k. (This doesn't always happen, but I find ...
jjmirks's user avatar
  • 141
4 votes
0 answers
525 views

How to open child windows on same display as cursor in Gnome?

I'm doing a bunch of work in Pure Data on Ubuntu 18.04 & Gnome 3.28 with a dual-monitor setup in which the secondary monitor is to the left of the primary. Working in Pure Data involves frequently ...
dave's user avatar
  • 41
4 votes
0 answers
2k views

VNC to a linux desktop in HiDPI mode won't scale properly

I have a linux mint Cinnamon desktop running in HiDPI. When I try to connect to it with a VNC client from my macbook (retina/hidpi display), the desktop shows up about 4x too big. I tried with mac's ...
marathon's user avatar
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4 votes
0 answers
16k views

Set up display orientation and resolution on an embedded Linux

we have an embedded PC with an Linux OS which seems to be an Debian/Ubuntu derivate with RT-Preempt patch. At this pc we attached a display (7" 1024x600 170 DPI) via DVI. We are need to run the ...
Alex44's user avatar
  • 177
4 votes
1 answer
1k views

Equivalent for `dm-tool switch-to-user `otheruser in different display managers

When using lightdm I can switch to another user by executing dm-tool switch-to-user. Is there a way that doesn't depend on the display manager? If not, what would be the equivalent command for the ...
student's user avatar
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4 votes
0 answers
2k views

Using rsync with the verbose option and filtering the information displayed

I am using rsync with the -a -r and -v options to copy files and directories from one server to another. This all works fine. But when I make a change, for example, to a single file on the source ...
TechTeacher's user avatar
4 votes
0 answers
151 views

How to loop over display numbers in .xprofile?

Is there a simple command to get all the display numbers (and only the display numbers) connected to the computer? The use case is that I'd like to have separate colour profiles ~/.color/icc/${display}...
l0b0's user avatar
  • 51.5k
4 votes
0 answers
226 views

Prevent dom0 IGP from being VGA-passed-through to HVM host with Xen4.4

Usually people want to VGA-passthrough their IGP, and there are a lot of documentation out there. However I don't want my IGP passed-through to the domU as it serves my dom0, only my secondary card (...
user avatar
4 votes
0 answers
1k views

EDID Invalid on USB DisplayLink Device

I have a Sabrent USB to HDMI adapter which is a DisplayLink device. It's recognized by udl as being a DisplayLink device, yet seems to be rejected/disabled due to having an invalid EDID: [32780....
Naftuli Kay's user avatar
  • 39.8k
3 votes
0 answers
64 views

How to force screen to be white, irrespective of tty, DE, etc

I'm trying to create a completely flickerless boot and login with Xorg, and I'm particularly interested in the time between the bootsplash (I use Plymouth) and Xorg being fully loaded (i.e. after the ...
Pickelgold's user avatar
3 votes
0 answers
341 views

Xorg specific tool to probe displays for PCI bus info?

This question came close to what I was looking for, but missed the mark. After some adventures trying to get device names as displayed from xrandr into xorg.conf I began to wish that there was an X11 ...
SeligkeitIstInGott's user avatar
3 votes
0 answers
938 views

External monitor not detected over HDMI - Debian Lenovo X1 Carbon

I am trying to connect external monitor to my Lenovo X1 Carbon 8th gen laptop. Even after connecting the HDMI cable, there is no signal over HDMI. Here is the xrandr output Screen 0: minimum 320 x 200,...
Prashant's user avatar
3 votes
0 answers
2k 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 ...
ga325's user avatar
  • 31
3 votes
0 answers
2k views

Creating Virtual Monitors that I can turn on and off at will and that KDE can manage like any real external monitor

I'd like to create a Virtual Monitor that works like a real one. I'd like to be able to connect and disconnect it when I wish and to configure it using KDE System Settings: change its position/...
xXxLINUXxXx's user avatar
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-...
user avatar
3 votes
0 answers
754 views

Monitor not waking up on start

I have two monitors (both are Dell u2515); they are connected to the motherboard by a daisy-chain cable, both DP 1.2, but I cannot get both of my monitors to wake up on start. The mointor connected ...
Deeps's user avatar
  • 31
3 votes
1 answer
198 views

bios, bootloader, kernel startup & screen driver

I'm trying to setup as touchscreen for a raspberry pi. My screen only displayed a white screen when kernel started. So I wondered how boot messages are displayed on my screen during startup. Bios, ...
rem's user avatar
  • 293
3 votes
0 answers
812 views

KDE - Monitor doesn't go into power save mode

I'm having intermittent issues with KDE not going into powersave, ie: turning the monitor off and suspending the system. In MENU / ENERGY SAVING I've set kde to turn monitor off after ten minutes, ...
aSystemOverload's user avatar
3 votes
0 answers
5k views

How to get DisplayLink to work with Debian?

I have have successfully installed the necessary drivers as outlined: https://github.com/AdnanHodzic/displaylink-debian/blob/master/post-install-guide.md I do have UEFI installed on Intel NUC (...
mshaffer's user avatar
  • 131
3 votes
0 answers
2k views

Reduce brightness in Grub

I have a laptop whose buggy BIOS can't set display panel brightness to a previous lower value during POST. Every time the laptop boots , the POST screen is 100% bright. I can refresh the brightness ...
Bharat G's user avatar
  • 516
3 votes
1 answer
739 views

Use partial screen display

Due to a fault with my screen (white vertical bar, the rest is fine), I would like to be able to tell Linux (X and console) to only use part of the screen. Does anyone know if I can achieve this with ...
newtovaux's user avatar
  • 353
3 votes
0 answers
421 views

Maximize window on secondary screen

I am running Linux Mint 18 Cinnamon 64 bit on a laptop with an Nvidia Geforce GTX 1060. I am extending the desktop to an external display and am having an annoying issue. Every time I attempt to ...
cirrusio's user avatar
  • 141
3 votes
1 answer
2k views

Borders of external monitor constrained to "outside" of laptop monitor

I use Linux Mint 18 on a Lenovo ThinkPad T420, i5, 8 GB RAM and 256 GB SSD, and Intel HD Graphics 3000. I have experienced this problem on elementary OS Loki (which is based on Ubuntu 16.04 LTS), and ...
J00S's user avatar
  • 131
3 votes
0 answers
56 views

Text display issues - certain applications only show a and _

I'm using a Debian 8 with testing repositories and i3wm. Quite a while ago some applications (vlc, ownCloud client, qbittorrent, teamspeak3) started to only display 'a's and underscores as dialog and ...
FreakyBytes's user avatar
3 votes
0 answers
93 views

puzzling.stackexchange.com turns left monitor black

This is a weird one. This is a new issue on an existing Ubuntu 14.04, dual screen setup, using Unity, nothing out of the ordinary. When I go to puzzling.stackexchange.com on my left monitor screen ...
Hatshepsut's user avatar
3 votes
1 answer
1k views

How can I make screen fade to black from terminal rather than just shut off?

I set up a hot corner that uses xset dpms force off to turn my display off. However, I want the fade-out effect to black that OSX has. How can I achieve this with a terminal command?
Rohan's user avatar
  • 3,581
3 votes
0 answers
659 views

Launching app over SSH with DISPLAY when user not logged in

After searching and searching without any luck I'm hoping someone here can enlighten me. I have a PC (Ubuntu with encrypted home dir). I wake this PC up from a shell script on my phone, the PC shows ...
thewiep's user avatar
  • 31
3 votes
1 answer
6k views

Secondary HDMI port not detected (Ubuntu 16.04)

So I have the third party nvidia graphics drivers up to date for my machine, and the HDMI port on my graphics card works fine. There is a secondary HDMI port on my machine but it is not working. It ...
Robbie Milejczak's user avatar
2 votes
1 answer
301 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 ...
III_phr's user avatar
  • 33
2 votes
0 answers
288 views

How to rename connected computer monitors in linux using wayland?

I have two identical computer monitors, both from the same manufacturer, with matching models and revisions. These monitors are connected to a Thunderbolt 4 docking station via DisplayPort, and the ...
Simon Schürg's user avatar
2 votes
0 answers
409 views

How to force all new windows to open in primary monitor on GNOME?

I am currently using two monitors side-by-side with my Linux desktop running GNOME. I have been using the Join Displays option to make the most out of my space. As time progressed new windows started ...
wx18568's user avatar
  • 21
2 votes
0 answers
219 views

Horizontal flipping of display with Wayland

I'm using Ubuntu 23.04 with Wayland. I use 3 extended displays, one being a small screen to be projected on a teleprompter. Is there a way to horizontally mirror/flip a display such that looking at it ...
fmic_'s user avatar
  • 121
2 votes
1 answer
363 views

How to prevent the mouse from waking up the display?

I prefer not having my monitor on at all times (or shutting down manually by pressing its hardware key) and thus the 'screen blank' option* is enabled (Gnome's 'power' settings). Any input wakes the ...
user598527's user avatar
2 votes
0 answers
309 views

Adding an LCD to Device Tree

I am attempting to define panel-info and display-timings for my SHARP Parallel 24bit LCD Screen within the Device Tree of my Beaglebone Black Debian Image. To do this I am using an overlay .dtbo file. ...
Dillon McCardell's user avatar
2 votes
0 answers
33 views

Creating alternate keyboard shortcut substituting laptop Fn keys for switching to external monitors

Currently, I am using Fedora 36 on my Zenbook, with an external monitor connected via HDMI. My laptop has an Fn key for switching among various display configurations, i.e. display 0, display 1, both,...
Zobayer Hasan's user avatar
2 votes
0 answers
55 views

Screen issue when using vim

When I launch vim in a window of gnu screen, it shows the file as if I had inserted two 'z's at the initial cursor position, but the file is in fact correct and these 'z's just get over written the ...
Kyle's user avatar
  • 665
2 votes
0 answers
552 views

How to avoid KDE disabling external monitor on suspend?

I noticed that when I suspend my laptop running KDE, the external monitor gets marked as disabled in the settings. I need to enable it after resuming the system (in system settings for displays). How ...
Grzenio's user avatar
  • 5,877
2 votes
0 answers
299 views

X11VNC Create X Server On N Display

I want to create a X11 display with X11VNC on specific display without resorting to -env X11VNC_CREATE_STARTING_DISPLAY_NUMBER=31, rather I want to specify N display and have it created appropriately. ...
Abszol D's user avatar
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# ...
neogeek23's user avatar
  • 131
2 votes
1 answer
1k views

External monitor detected but shows no video output in Sway / Wayland

I have an external monitor connected to a thunderbolt dock which I would like to utilize. For whatever reason, the monitor appears to be recognized by the system but fails to display anything. I can ...
Kyle Poe's user avatar

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