51
votes
Accepted
What is crtc and how many outputs can I enable using xrandr?
CRTC stands for "Cathode Ray Tube Controller" but wikipedia prefers "Video Display Controller".
They are still often called CRTCs - technical terms can be slow to change sometimes.
...
11
votes
Xrandr not recognizing '-HSync' as an option
Remove the "Modeline" part:
sudo xrandr --newmode "5120x2880_60.00" 1276.50 5120 5560 6128 7136 2880 2883 2888 2982 -hsync +vsync
11
votes
How do I align the bottom edges of two monitors with xrandr?
In addition to @BatchyX's excellent answer, an alternative —and IMO more convenient— option could be using ARandR (which stands for "Another XRandR GUI"):
ARandR is designed to provide a simple ...
10
votes
Accepted
How to install and use xrandr in Debian?
About xrandr
From man xrandr:
Xrandr is used to set the size, orientation and/or reflection of the outputs for a screen. It can also set the screen size.
In my Debian GNU/Linux 7 I have found xrandr ...
6
votes
How to use xrandr to crop part of my monitor
My configuration:
Intel Celeron NUC
Ubuntu 18.04.3 LTS
Intel i915 drivers (integrated video)
HDMI output to an old LCD TV
What didn't work:
Driver has no support for over/underscan properties in ...
6
votes
Accepted
xrandr set offset to monitor
It seems that the --above, --below, --right-of, and --left-of options are not compatible with --pos.
Apparently, --pos has lower precedence and the other ones take over (a warning would have been ...
6
votes
Accepted
How to mirror a display with different resolutions?
As beautifully described in a bug report, what I wanted was:
Considering the current name of my displays (it changes), the answer was:
xrandr --output HDMI2 --auto --scale-from 2560x1440 --output ...
5
votes
Disable Unplugged Displays (xrandr)
I know this is a super old thread but I wanted to share how I solved the problem, using your information about turning monitors on and off and then disconnecting them. I used a program called ...
4
votes
How do I align the bottom edges of two monitors with xrandr?
If you looking for a drag-and-drop GUI-based solution, I can recommend ARandR.
It allows you to set the most important XRandR settings, e.g. screen position and resolution, which then can be saved in ...
4
votes
How to mirror a display with different resolutions?
You haven't said exactly what you've tried, but the scale option worked for me. Note also the scale-from option which might be easier in your case.
$ xrandr --output DP1-1 --same-as DP1-8 --scale 2....
3
votes
How to use xrandr to crop part of my monitor
This solution can “crop” and position without transformations. It can even leave multiple cropped areas on multiple real monitors. The mouse will not be caged to the “crop” area(s).¹
This command line ...
3
votes
Desktop displays incorrectly after screen resize in KDE5 Plasma. KDE4 worked correctly
I found a workaround, maybe even the solution. While I was looking for something else I stumbled onto this command:
kquitapp5 plasmashell && kstart5 plasmashell
Which restarts the ...
3
votes
Error on changing the resolution of a vnc session in linux on the fly
On my Ubuntu server, it wasn't working either with the -randr parameter, but it works great by using several times the -geometry parameter. Give it a try.
So you would enter:
vncserver -geometry ...
3
votes
XRandR DPI on multihead linux
It is not possible to set different DPI with xrandr.
To handle this situation, there are a number of solutions in various forums and Stack Exchange using scaling (e.g. --scale 2x2 or --scale-from ...
3
votes
XRandR DPI on multihead linux
I was able to solve this (with issues) using the details outlined in the following github discussion: https://github.com/linuxmint/Cinnamon/issues/3606
External Monitor QHD (2560X1440), Internal/...
2
votes
Is there a way to turn off one Monitor in a Multiheaded setup like dpms force off does for all at once?
You can use ddccontrol to control dpms on individual monitors – without modifying the virtual desktop (→ moving windows etc.).
Run
ddccontrol -p
to get your monitor's addresses, e.g. dev:/dev/i2c-5.
...
2
votes
What is crtc and how many outputs can I enable using xrandr?
I'm afaid that it's hardware limitation in your display device.
I've simmilar situation - laptop(t430) with docking station. I can use in parallel 3 of monitors - 2*DP and LVDS or 3*DP or LVDS and DP ...
2
votes
Split single monitor into multiple using xrandr
xrandr is your tool. Imagine your monitor’s name/output is DVI-0 and it has a 1920x1080 panel. If your X11 is running it normally, then the following commands split it e.g. vertically in two screens, ...
2
votes
How can I set display resolution to 3840x2160 with Intel Graphics 3000?
$ cvt 3840 2160 19
# 3840x2160 18.98 Hz (CVT) hsync: 41.48 kHz; pclk: 205.75 MHz
Modeline "3840x2160_19.00" 205.75 3840 4008 4400 4960 2160 2163 2168 2186 -hsync +vsync
$ xrandr --newmode "...
2
votes
xrandr — Treat multiple screens as one
Multiple monitors can be achieved in xrandr by creating a new monitor that consists out of one or more existing monitor. The virtual size of this display is automatically determined.
Take the ...
2
votes
if-then statement in bash to toggle screen resolution
Example of solution
The solution can be customized according to your needs.
#!/bin/bash
MYRES=$(xrandr -q | grep "\*" | awk '{ print $1; }')
echo -e "\nResolution is $MYRES\n"
case ...
1
vote
Screen resolution and DPI
Screen resolution tells you how many pixels there are in the screen.
DPI, both vertical and horizontal, tells you how many of those pixels there are in an inch.
Together they tell you the physical ...
1
vote
An attempt to switch to a doublescan X11 modeline fails with "Configure crtc 0 failed"
I couldn't comment without reputation, but here is a similar thread:
https://askubuntu.com/questions/136139/xrandr-configure-crtc-0-failed-when-trying-to-change-resolution-on-external-m
I am not sure ...
1
vote
How to use xrandr to crop part of my monitor
How to emulate a 1440p ultrawide monitor in a 4K TV [Ubuntu 23.04]
Greg question was how to crop the monitor using xrandr to work around an obstruction on his display. I used that to test if a ...
1
vote
Accepted
Gnome 3.26 won't respect monitors.xml
This GNOME Shell Extension is supposed to fix this issue: https://extensions.gnome.org/extension/1066/fix-multi-monitors/
In case installing this doesn't work, you can also follow http://bernaerts....
1
vote
Accepted
Yellow and gray blend with white on a remote monitor connected with a HDMI-VGA adapter
tl;dr
xrandr --output HDMI-1 --set "Broadcast RGB" "Limited 16:235"
Detailed answer
The problem was with the X server. The idea came from this Arch Linux Wiki article about xrandr.
They suggest ...
1
vote
Create shell script file to change brightness values of xrandr
I've stumbled upon the same problem once and have written a little script to do just what you are asking for.
GitHub: xrandr-brightness-script
It basically just calls xrandr --current --verbose and ...
1
vote
Accepted
xrandr --dpi does not affect Gnome Apps on i3wm
The problem was that I was not starting gnome-settings-daemon at launch. It now works properly.
1
vote
Can't change resolution to 1680x1050
I spend 2 hour to solve similar problem and problem was in vga cable. Replace vga cable I can change resolution to 1920x1080 without using xrandr or xorg it's very strange.
Only top scored, non community-wiki answers of a minimum length are eligible
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