Questions tagged [xrandr]

Official configuration utility for x.org.

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145 votes
6 answers
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How do I set a custom resolution?

I tried to use xrandr to set 1680x1050 as a new mode to VGA output, but it says: sudo xrandr --addmode VGA-0 1680 X Error of failed request: BadMatch (invalid parameter attributes) Major opcode of ...
user216356's user avatar
  • 1,451
69 votes
9 answers
212k views

How can I make xrandr customization permanent?

I used to edit the startup script for the GDM (/etc/gdm/Init/Default) to permanently change my display resolution. How can I do this with LigthDM in Ubuntu Oneiric?
Edocastillo's user avatar
21 votes
4 answers
84k views

How to run xrandr commands at startup in Ubuntu

How can I run the following xrandrcommand on startup? xrandr cvt 1368 768 xrandr --newmode "1368x768_60.00" 85.25 1368 1440 1576 1784 768 771 781 798 -hsync +vsync xrandr --addmode VGA1 ...
Udhaya Kumar's user avatar
48 votes
3 answers
58k views

How to set the monitor to its native resolution which is not listed in the resolutions list?

After installing Ubuntu 10.04 with my Samsung SyncMaster B2030, native resolution (1600X900) is not found in the list of resolutions.
Riyaz Mohammed Ibrahim's user avatar
42 votes
6 answers
114k views

How do I save my new resolution setting with xrandr?

I found somewhere in a forum the solution to a problem where the only resolutions available were 800x600 and 1024x768. I managed to get 1440x900, which works very well. Every time I reboot, this mode ...
Jacob J.'s user avatar
  • 423
52 votes
8 answers
467k views

How to detect and configure an output with xrandr?

I have a DELL U2410 monitor connected to a Compaq 100B desktop equipped with an integrated AMD/ATI graphics card (AMD E-350). The installed O/S is Ubuntu 10.04 LTS. The computer is connected to the ...
ysap's user avatar
  • 6,971
36 votes
6 answers
340k views

Failed to get size of gamma for output default when trying to add new screen resolution

I'm trying to adjust resolution on my new MSI GT70 2OC. In settings, only one resolution is available: 1920x1080. This is fine, except that I need to decrease the resolution and make it more ...
Arsen Zahray's user avatar
18 votes
5 answers
61k views

How to force Multiple Monitors correct resolutions for LightDM?

I am affected by the BUG: https://bugs.launchpad.net/ubuntu/+source/unity-greeter/+bug/874241 Otherwise, if like me you have a laptop connected to a second monitor of higher resolution, LIGHTDM at the ...
Hanynowsky's user avatar
  • 2,771
16 votes
1 answer
31k views

Why do xrandr errors "BadMatch", "BadName", "Gamma Failed" happen?

I have not found a single solution to such errors, despite the rather large number of users out there who have them. So I want to try to find a solution myself. However, I have no idea why they occur....
TellMeWhy's user avatar
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3 votes
1 answer
13k views

Adding newmode with Xrandr - "800x480_60.00"

I have 5-inch a 800x480 tft connected to the LVDS connector on a Portwell WADE-8020 mini-ITX embedded system board. I would like to build a XMBC/Kodi box for streming my music from my freenas PC with ...
Block's user avatar
  • 33
2 votes
1 answer
2k views

Best place to automatically add mode in xrandr

What is the best place to add a mode with xrandr? As of now, I added xrandr --newmode "1344x744_60.00" 80.75 1344 1408 1544 1744 744 747 757 773 -hsync +vsync xrandr --newmode "...
sancho.s ReinstateMonicaCellio's user avatar
15 votes
2 answers
15k views

Run script when monitor is connected

I am trying to run a script located in usr/local/bin/ when I connect an external monitor to my laptop. I have tried to add a new udev rule but that did not work. I created a new file in /etc/udev/...
Rumesh's user avatar
  • 1,429
13 votes
5 answers
49k views

Can I force VGA signal output even when xrandr shows 'disconnected'?

My notebook is connected to a HDTV through a KVM Switch (one other notebook also connected to the same HDTV). The problem seems to be that Ubuntu doesn't recognize the HDTV to be turned on and ...
Tobe's user avatar
  • 133
5 votes
1 answer
7k views

VGA not listed in xrandr output: Projector not working, Intel Kabylake Graphics

I have been trying to get output on a projector through the VGA port on my Laptop (Dell Latitude 5480, Ubuntu 16.04). I have only Intel HD Graphics and no dedicated GPU. I am not able to get any ...
Yaksha's user avatar
  • 1,740
5 votes
1 answer
6k views

Output of xrandr shows 1024x768+1366+0; what does it mean and can I change it?

$ xrandr VGA1 connected 1024x768+1366+0 (normal left inverted right x axis y axis) 0mm x 0mm I don't understand what the number 1366 in 1024x768+1366+0 represents. Can I change its value?
Helio's user avatar
  • 53
14 votes
2 answers
59k views

Can I zoom out windows or scale the whole desktop?

I have a 17" laptop with 1600x900 resolution, but it's not enough to open windows side by side. I'm wondering if i could zoom out (or any other solution) windows (or the whole desktop). Is there a ...
user212807's user avatar
7 votes
4 answers
31k views

How to set Display Resolution while having to use "NOMODESET" on boot

I have a Samsung laptop with a Radeon graphics chip. Live-Images and graphical installation have always worked on this laptop with the proper resolution of 1366x768. However, after Ubuntu had been ...
user avatar
6 votes
5 answers
3k views

Adjust brightness with xrandr and cron job

EDIT Thanks to pa4080 I added one line to the script below and now it works great. I don't exactly understand how, oh well. I would like to make a cron job to adjust my brightness at different hours ...
Piney's user avatar
  • 163
54 votes
6 answers
20k views

How to disable global <Super>-p shortcut?

In ubuntu 11.04 there was a workaround using gconf-editor and setting key /apps/gnome_settings_daemon/plugins/xrandr/active to false. However there is no such key in gconf-manager using ubuntu 11.10 (...
Dovydas Sabonis's user avatar
39 votes
2 answers
88k views

Rotate only one screen

If I have only the internal monitor (LVDS1) with an xrandr -o left command. Now I want to attach a second monitor, say to HDMI1. Then I'd like to rotate only the internal monitor, but not the external ...
Martin Ueding's user avatar
12 votes
1 answer
32k views

HDMI not detected on Ubuntu 18.04

After upgrading to Ubuntu 18.04 from version 16.04, the external monitor is not detected anymore. I have tried using both VGA and HDMI monitor ports to connect using the USB-C adapter to my laptop. ...
Marc's user avatar
  • 121
2 votes
1 answer
1k views

Desktop monitor brightness adjusting [duplicate]

Is it possible to adjust desktop monitor brightness like on laptops? Yes all desktop monitors have separate menu for it. But is it possible to change this to something like Winkey+(F1..F12)? ...
UNIm95's user avatar
  • 696
31 votes
3 answers
24k views

How to use "xrandr --gamma" for Gnome "Night Light"-like usage?

Background: More red / Less blue at night To save the eyes at night, adding more red and/or subtracting blue, is becoming popular in Windows 10 (blue-light filter) and Linux; Gnome Desktop (Night ...
WinEunuuchs2Unix's user avatar
13 votes
1 answer
23k views

Why don't my lightdm.conf edits affect my desktop screen resolution?

I wanted to change my desktop screen resolution to 1366x768. But my VESA drivers(AMD REDWOOD) did not detect that resolution. So I created a shell script as follows:- xrandr --newmode "1368x768_60.00"...
Venkatesh's user avatar
  • 2,331
5 votes
2 answers
6k views

Maximize windows to physical screen when using a virtual resolution w/xrandr

I have a netbook with a small screen in widescreen format (1024x600), which means that a lot of programs whose designers didn't imagine such a thing open windows that can't be resized and whose ...
Ryan Reich's user avatar
4 votes
2 answers
4k views

How can I quickly toggle monitor orientation with a shortcut key?

While looking if someone asked this question before, I landed on this for Windows. I'd like to do something similar (shortcut or terminal alias/command) on Linux/Ubuntu to be able to quickly switch ...
user10853's user avatar
  • 1,566
3 votes
1 answer
4k views

VNC with virtual display - black screen when I connect

I have a Ubuntu machine that I use as a Plex and data server. There is no monitor connected to it. This wasn't a problem with Ubuntu 16.04, but now, with 18.04, it is and it shows a black screen ...
Stefan Lemmens's user avatar
2 votes
1 answer
8k views

Running a script at startup that uses xrandr to set display options

I've tried numerous methods of getting the following commands to run at startup xrandr --output DFP10 --rotate left xrandr --output DFP11 --right-of DFP10 This is necessary because my left monitor ...
Yunolan's user avatar
  • 23
1 vote
1 answer
2k views

Xrandr command in startup script has no effect, but script does run and command work from terminal

I cannot seem to get an xrandr command to rotate my monitor at startup. The script: cat /etc/X11/Xsession.d/999_test ...
Stonecraft's user avatar
27 votes
3 answers
119k views

"xrandr: Configure crtc 0 failed" when trying to change resolution on external monitor

I've been trying to set up an external monitor for a bit, finally got it mostly working except the resolution is off. My monitor's native res is 1600x900, which I finally got to show up in xrandr: ...
ohnolawl's user avatar
  • 309
27 votes
4 answers
117k views

Xconfig xrandr BadMatch

Recently I minimal installed my OS, but got an unexpected error while setting my monitor resolution. It seems like a very old problem, but this time there is something else (I think). To install the ...
Teifi's user avatar
  • 1,312
23 votes
7 answers
23k views

Does Wayland have an equivalent of xrandr for changing brightness and color temperature?

xrandr can be used to change the display brightness using the command line. For example, xrandr --output VGA-1 --brightness 0.4 Wayland does not support xrandr. Is there any similar tool in Wayland ...
Archisman Panigrahi's user avatar
19 votes
2 answers
5k views

Setting different subpixel rendering on different monitors

I am using dual monitors, one of them rotated by 90 degrees. Font antialising does not look right in the rotated monitor (i.e., there are rainbow borders around characters). I believe this is ...
scaramouche's user avatar
13 votes
1 answer
11k views

Increment Brightness by value using xrandr [duplicate]

So I have an Alienware 13 R3 with the OLED display, and for the first time I was able to change the brightness using the xrandr command. The problem was the absence of backlight in OLED displays, so I ...
Fjolfrin's user avatar
  • 131
12 votes
5 answers
28k views

NVIDIA - Ubuntu 20.04 - HDMI second monitor with blank screen, but xrandr detects it [Bug reported on Launchpad and freedesktop's gitlab]

Edit on 15/10/2020: This's a bug found on the kernel and intel/drm drivers. More info: https://gitlab.freedesktop.org/drm/intel/-/issues/2181 https://bugs.launchpad.net/ubuntu/+source/linux/+bug/...
Noctis's user avatar
  • 499
9 votes
4 answers
29k views

Any really decent way to get three monitors?

What satisfactory solutions are there to achieve three monitors on Ubuntu? I know some ATI cards (Eyefinity) can support 3 monitors from a single card, but I don't know how well this is supported ...
JohnCC's user avatar
  • 271
7 votes
1 answer
4k views

Possible to have xrandr not react to unplug of secondary monitor, removal of HDMI/ DisplayPort cable?

I'm on a Nvidia GTX 950 GPU desktop system with three monitors attached. One monitor on HDMI out port, other two on DisplayPort ports. The default behavior is that turning off one of the 'secondary' ...
RoundSparrow hilltx's user avatar
4 votes
1 answer
5k views

How do you change the preferred resolution with xrandr?

I am cloning my 1920x1080 monitor display to a TV (1366x768) using a splitter device. It works fine except rebooting moves all my icons up on the desktop, forcing them into a space of the lower ...
ticotexas's user avatar
  • 719
3 votes
1 answer
2k views

How to persist display settings?

I my display configuration to remain like this: Yet after each reboot, it resets to: How to have it persistent? My xrandr output: Screen 0: minimum 8 x 8, current 4920 x 1920, maximum 32767 x ...
k0pernikus's user avatar
  • 6,105
2 votes
1 answer
2k views

Can't boot Ubuntu 18.04 LTE to desktop after upgrade to 4.15.0-51

I have a VM running Ubuntu 18.04. After an upgrade (looks like it was to Kernel 4.15.0-51) I can't boot to the desktop. Instead, I see a blank, reddish screen. If I use Grub to get a recovery mode, I ...
MikeB's user avatar
  • 217
29 votes
5 answers
21k views

External monitor turns off for several seconds every 5-10 minutes

I'm using Ubuntu 16.04 installed on Lenovo ThinkPad T500 laptop with two external monitors connected via display and VGA ports. I think the issue started after I upgraded to Ubuntu 16.04. But I'm not ...
Victor Smirnov's user avatar
14 votes
4 answers
31k views

How can I list connected monitor(s) with xrandr?

I'm working on developing a python application for Ubuntu that enables a user to have their desired resolution without requiring graphics drivers. In order to do this I've been using xrandr, which so ...
TellMeWhy's user avatar
  • 17.5k
11 votes
3 answers
9k views

"--scale 2x2" in xrandr causes the monitor to not display anything

I've got a 4k external main monitor and I'm trying to connect a 1680x1050 external monitor to the left of it. I've tried using: xrandr --output HDMI-0 --scale 2x2 --pos 0x0 --fb 7200x2160 --...
m4p85r's user avatar
  • 233
9 votes
2 answers
7k views

How to adjust contrast with xcalib

I'm trying to adjust contrast on my laptop, a ThinkPad E430, running ubuntu 12.04: xcalib -co 70 -a xrandr --output LVDS1 --brightness 0.7 Either of them works only for 1-2 seconds and after that ...
user52151's user avatar
  • 265
8 votes
2 answers
23k views

Screen is black, but connected according to xrandr

I have some trouble with my HDMI Display. xrandr output: Screen 0: minimum 320 x 200, current 5760 x 1080, maximum 16384 x 16384 DisplayPort-0 disconnected (normal left inverted right x axis y axis) ...
gel's user avatar
  • 383
7 votes
1 answer
2k views

Add asymmetrical margin on LCD display?

My old laptop display is starting to break, and I have many dead pixels and other physical issues on the left side of the screen only. Of course I should get a new monitor (or ideally a new laptop), ...
Drew Levitt's user avatar
7 votes
1 answer
9k views

Can't select 2560x1440 resolution even though I know it's possible (I have proof!)

I have a new monitor, (the Dell U2515H) which I'm trying to drive at 2560x1440 resolution (just 30hz) over HDMI using only the onboard graphics on my machine (Intel HD4000 found in the ivy bridge CPU)....
matt burns's user avatar
7 votes
1 answer
38k views

Second monitor not working via USB-C [duplicate]

When I search online, I saw a couple of similar issues but most of them are with Dock station. I am not using a dock, I am using HDMI to USB-C cable. HDMI part connects to the external monitor and USB-...
yalin's user avatar
  • 151
7 votes
1 answer
30k views

How to set resolutions with xrandr using multiple monitors

I want to set specific resolutions to 2 monitors. How can I tell xrandr which monitor to change resolution.
Luis Alvarado's user avatar
7 votes
2 answers
18k views

Change only one display orientation from terminal

I am starting to work with 2 displays on Ubuntu. One of them is rotateable, so I can use it easily in both landscape and portrait mode. But I world prefer to have ability to change orientation setting ...
Lapshin Dmitry's user avatar