Computer monitors (i.e. screens or displays). For system/application monitoring, please use the /monitoring tag.

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31
votes
5answers
7k views

How can I detect when a monitor is plugged in or unplugged?

Is there any event that is triggered when I plug in or out an external monitor into the DisplayPort of my laptop? ACPID and UDEV don't react at all. I'm using onboard graphics on an intel chip. Here ...
17
votes
4answers
3k views

How can I put my HDMI display into (and out of) power save mode?

I am using a Raspberry Pi to run an information display in an office. I want the display in power save mode when outside of business hours. I was going to use cron to execute something at the ...
12
votes
2answers
1k views

Using many monitors (4+) in linux

I want to be able to run more than 4 monitors (maybe 6) and it's extremely confusing what's compatible now with the Displayport cards coming out. Right now I have an ATI card that only has 2 HDMI ...
11
votes
2answers
825 views

How to measure light?

I've got a Dell Latitude E6410 notebook which changes lcd light intensity in response to ambient light levels, so it has to have some photocell. How can I access the data from this photocell? I tried ...
11
votes
1answer
4k views

How can I simply adjust monitor color temperture in X?

I have a new 27" iMac, on which I run Fedora 15 (with no Apple OS) — just boot straight to Linux. The colors are basically accurate to my eye, but the white point is much higher than I'd like (that ...
10
votes
2answers
10k views

How do I set default brightness after boot?

Linux Mint 12 (64bit), on an Acer Aspire 7730g. Upon every boot, the screen brightness is set very very low. Easily fixed via the function keys, but still a very annoying thing to do after every boot. ...
10
votes
5answers
5k views

Screen turns on automatically (xset dpms force off)

I am using xset dpms force off to manually turn my screen off to save power. However, it turns back on after some time (20 - 40 seconds). Distro: Ubuntu-Lucid Graphics: Intel 4500 MHD ...
7
votes
1answer
293 views

How can I send power on/off signals to a VGA monitor?

I've used some old spare parts to make a sort-of kiosk for my kitchen. It's running OpenBSD and has a simple text based UI (no X Server). I plan to add an Arduino with a motion sensor that ...
7
votes
2answers
1k views

How can I use my TV as a second display over HDMI on Linux at its native resolution?

My TV is a Philips 19PFL4322. It's native resolution is 1440x900 . My laptop's graphics card is a ATI Radeon HD 3650, using the open source radeon driver on X.org server 1.10. If I connect them via ...
7
votes
1answer
429 views

Can I color-calibrate a Dell U2413 wide-gamut monitor under Linux?

If I get a Dell U2413 wide-gamut monitor to use with Fedora for photography, will I be able to use it properly? I've got a ColorHug, and I see that there's a U2410 ccmx profile; will that get me in a ...
6
votes
2answers
2k views

Edid information

I want to gather the Edid information of the monitor. I can get it from the xorg.0.log file when I run X with the -logverbose option. But the problem is that If I switch the monitor (unplug the ...
6
votes
1answer
3k views

Color calibration on Linux Mint

I'm running Linux Mint 9. I installed Argyll and gnome-color-manager but neither of those have a GUI. I need to configure my monitor colors. Right now the white looks a little yellow etc. and I want ...
6
votes
3answers
1k views

X.org radeon driver brightness/contrast adjusting

Is there a way I can adjust contrast/brightness of the card (VGA) output when using the open source xorg radeon driver? I have a monitor that has poor image quality when its tweaked using it's knobs, ...
6
votes
1answer
1k views

Get monitor make and model and other info in human readable form

I have extracted the shorthand version of the current monitor attached to the computer. Here is an example: vendor "VSC", prod id "18500" In Ubuntu's Monitor Preferences, it is identified as ...
6
votes
1answer
1k views

How to find the best monitor resolution and put it to work? Fedora

In this question I'm asking how to install a compatible driver to a Fedora machine, but, the main problem is a bad resolution. So, how can I find the best resolution to my monitor and put it to work? ...
6
votes
1answer
380 views

Multiple monitors as cloned desktop windows

I am running Fedora 16 using an Nvidia card with 2 monitors. I have the monitors setup as 2 separate displays (in that I can move a window from monitor to monitor). One monitor is mounted in a ...
5
votes
2answers
11k views

Debian: very low resolution and an “unknown monitor” problem

Edit: I have installed CrunchBang (or #!, a Debian-based distro), and that seems to have solved all of my resolution problems. I've just installed Debian after using Linux Mint for a few months. ...
5
votes
2answers
1k views

How can I swap my two screens, left to right?

I pressed something and accidentally swapped my two screens. My left one is actually considered as the right one, and vice versa. How can I swap them back? Edit - Specifically, I'm using Gnome, ...
5
votes
2answers
1k views

Screen brightness always maximum when logoff or restart

I am using Fedora 13 and whenever I Restart or Logoff on my laptop. The screen brightness resets to its maximum value. I am not aware of this problem. Can anyone tell me why this is causing and what ...
4
votes
1answer
303 views

How to turn off screen under Linux/BSD?

How can I turn off my laptops screen from software side? ex.: under Scientific-linux, OpenBSD? Or the best I can do from OS side is just to show a black picture? Are there any solutions?
4
votes
1answer
2k views

How do I change my monitor's gamma settings?

How do I change my laptop monitor's gamma settings on Linux Mint 9 (preferably using a GUI interface)?
4
votes
2answers
683 views

In linux console (no X), how to stretch console screen to fit monitor

Google could not help me with this problem. I hope you guys can. When I boot my computer, the first few screens presented to me by BIOS and boot menu are stretched to fit the LCD screen. Once Linux ...
4
votes
1answer
1k views

Cinnamon 2.0.14 crashing when a second monitor is enabled with NVIDIA drivers (Mint 16)

Here's the set-up: 2x identical GTX460 cards 1x BenQ 144hz monitor (1920x1080) 1x Asus 60hz monitor (1920x1080) I was told to avoid installing the NVIDIA driver myself and use the ...
4
votes
1answer
445 views

tell xfce to resize all windows when external monitor unplugged

I wrote a nice little script that changes my monitor outputs according to whether an external monitor is connected or not and whether the laptop lid is open or closed or not and so on. That works ...
4
votes
1answer
564 views

How can I setup a dual-head display in portrait mode? (Arch)

I have two monitors on my desk in portrait orientation. One is plugged in with a DVI cable and the other with a VGA (I don't have two DVI cables available) into my Gigabyte Radeon 7750 HD graphics ...
4
votes
1answer
45 views

Whether monitor is off without appealing to X or /proc

How can I know whether the monitor is on or off if X is not running, and without appealing to /proc/acpi/video? The latter isn't available from my kernel. If X is running it's just a matter of $ ...
4
votes
1answer
1k views

Cannot set up screen panning in Ubuntu with xRandR which states that it cannot find the modes

I am using a Samsung n150 netbook with a 10.1 inch screen and it has a maximum screen resolution of 1024x600. I am running Ubuntu 10.04 LTS and want to enable screen panning for a larger virtual ...
4
votes
0answers
135 views

Monitor connected via displayport to DVI adapter won't sleep properly

I have a monitor connected to my machine that displays odd behavior when entering power saving sleep mode. When entering sleep, the monitor will alternate between blanking and displaying a default ...
4
votes
0answers
481 views

Cannot use highest resolution, xrandr does not list mode (Intel GPU, DP to DVI adapter)

I have a screen capable of 2560x1440. It is connected to my Intel NUC with a DP to DVI adapter. My graphics card Since updated my Arch Linux system last week (not sure what was updated exactly) I can ...
4
votes
1answer
413 views

Program similar to xcalib to invert desktop colors

I'm using xcalib to invert colors on my computer at home. I have two monitors at work, and unfortunately the xcalib -i -a inverts only one of them (the one I don't want to invert). I haven't found any ...
3
votes
4answers
4k views

setpci - Making a script to manually change brightness

I can use something like setpci -s 00:02.0 F4.B=XX replacing 00:02.0 with your device address (obtained via lspci | grep VGA) and XX with a value between 00 and FF (FF = 100%, 7F = 50%, etc...) to ...
3
votes
1answer
162 views

How to change GNOME default screen rotation

How do I change the default screen rotation for my gnome desktop? Is there anyway I can change the monitor settings without logging in?
3
votes
1answer
1k views

tty (console): disable monitor

In .xinitrc, I use xrandr --output LVDS1 --off to disable the monitor of my laptop (I always use a projector at school). But, before I log in with xinit, or when I temporary go to the console ...
3
votes
1answer
321 views

Graphics dim, but mouse cursor not dim

When I resume from suspend-to-ram often the graphics on my internal screen is dim (around 30-50% intensity). Initially I thought it might be the backlight, but the mouse cursor is not dimmed - only ...
3
votes
1answer
139 views

How automatically change the orientation according to display's pivot position?

I have a display I use for programming in portrait mode. To watch videos, I pivot it to landscape mode multiple times a day. The physical transformation is quick but I have to dig into the monitor ...
3
votes
2answers
736 views

KDE; each monitor another desktop

Is it possible to configure for example 4 desktops and switch them separately for each monitor?
3
votes
1answer
257 views

Issue with laptop screen when opening lid

I use Archlinux, with acpid to configure the laptop lid behavior rather than systemd. Currently, I have it set so vbetool sets dpms off when the lid is closed, and reopening the lid sets it back on. ...
3
votes
1answer
375 views

resolution of attached widescreen

I wanted to connect my TV (Sony Bravia) to my Laptop. My laptop has a displayport and the TV a HDMI. So with the adapters, I'm able to connect those two, and that part works. What doesn't work, is ...
3
votes
0answers
139 views

How do I make the CLI run on dedicated graphics?

I just finished my Gentoo minimal install and the first thing I wonder is why I get no picture. I did have signal on the live CD, so that was pretty odd. I plugged the monitor into the Intel HD ...
3
votes
0answers
287 views

Screen flickers in Fedora 17

Screen flickers every 10 seconds. (I timed with a stopwatch, screen flickers every 10 seconds, 6 times a minute exactly.) I've used Windows and I'm trying to use Linux. I don't know much about Linux. ...
2
votes
2answers
182 views

How to detect aspect ratio of monitor?

How do you detect the aspect ratio of your monitor? I tried: root@malou-laptop:/home/liv# xrandr -q xrandr: Failed to get size of gamma for output default Screen 0: minimum 640 x 480, current 1680 x ...
2
votes
1answer
196 views

Multiple monitor with Linux

I' m installing Arch Linux with OpenBox, at the moment I've only downloaded OpenBox and tint2, but I have to install all the necessary. Before doing everything I'd like to know how to use my two ...
2
votes
1answer
176 views

live bootable tiny distro for burn-in testing of LCDs?

I'd like to stress test used LCD monitors for problems that may become apparent after they've been in use for a while. I'm looking for those with components that fail because of heat. To those ends ...
2
votes
2answers
876 views

How do I configure my graphics drivers?

I'm running Linux Mint 9 gnome on a Toshiba Satellite A105-S4211 With this, inxi -G Graphics: Card Intel Mobile 945GM/GMS 943/940GML Express Integrated Graphics Controller X.Org 1.7.6 Res: ...
2
votes
1answer
2k views

RandR not recognizing monitor

I just plugged my EeePC to a Sony BRAVIA KDL-32EX710. Such TV supports resolutions up to 1920x1080, but RandR only let me use resolutions from 640x480 to 1024x768. In order to use full resolution I ...
2
votes
1answer
236 views

Finding screen resolutions without $DISPLAY through python or shell scripting

I am developing a personal project/idea for a headless Raspberry Pi that works without a GUI display. I am working on a text graphicsesque design. As the Raspberry Pi allows one to plug into most any ...
2
votes
2answers
422 views

Detecting monitors on machine over local ssh connection

I need to write a script to check on video related things on machines in the local network, e.g. Is a monitor plugged in? Are the video drivers up to date and appropriate for the hardware? Is Xorg ...
2
votes
1answer
89 views

CRT monitor refresh rate

I have Ubuntu14.04 64bit installed on computer with a CRT monitor. In Windows I could set the monitor's refresh rate to 85Hz. But Ubuntu's xrandr reports that maximum is 60Hz for 1024x756. Is there a ...
2
votes
1answer
497 views

Backlight control manjaro linux

I'm new to arch/manjaro. I've installed it onto my sony vaio vpceh1m1e. I cannot change the backlight value. I've solved this before on ubuntu, add this line to the xorg.conf: Option ...
2
votes
1answer
688 views

Extended monitor - scroll right to access left screen

I am running Crunchbang (debian based) and I'm trying to extend my desktop, I've ran the following command: xrandr --output DVI-I-2 --auto --output DVI-I-1 --primary --auto This has extended the ...