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

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2answers
41 views

Enable second monitor from shell

So... I have two monitors on my Ubuntu machine. And every time I launch some Windows OpenGL application under Wine it turns off the second monitor. And leaves it turned off when the application exits. ...
1
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1answer
20 views

Selective dim screens

How can I dim only select screens of my multiple-monitor linux system? I have 5 monitors connected to my computer 4 *15 inch and one 27 inch. sometimes i want to use only the main screen (27) and ...
1
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1answer
29 views

External Dell monitor has ghosting effects on dropdowns and terminals

I have an external monitor setup that works perfectly in windows, but in linux mint I get weird ghosting effects in the monitor. the monitor is a DELL SP2309Wc with resolution of 2048 x 1152 No ...
2
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0answers
57 views

What is the xcalib -screen number for the VGA monitor when the other monitor is HDMI

I must use a VGA-to-DVI cable and a HDMI cable to run two monitors. I'm trying to invert the colors on both monitors but I can only invert one of them: $ xcalib -invert -alter -s 0 #works $ xcalib ...
3
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1answer
256 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 ...
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0answers
56 views

Change screen resolution of Xenserver Console for a CentOS VM

I need to increase screen resolution to 1024x800 for my XEN console. I tried to place vga=791 at the end of kernel line the file /boot/grub/grub.conf but it seems that most of the boot arguments ...
2
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0answers
66 views

How can I crop a 1920x1200 monitor to 1920x1080?

I have just purchased a 1920x1200 monitor, and have some situations where I want to force the output to the more common 1920x1080. However, I don't want to distort the output, and would prefer a ...
2
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1answer
52 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 ...
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2answers
92 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 ...
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0answers
60 views

Xorg Configuration for Unregistered Resolution

I have a monitor with native resolution of 1600*900_60.00, and the intel on board Gen3 Xeon video chipset (i915). when i do $> xrandr the 1600x900 resolution is not in the list. I tried to write an ...
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1answer
47 views

Cooking EDID and finding values for .S file

It became really annoying and the resolution is bad so I decided to make my EDID and pass that to the Kernel. (I am creating EDID for S20A300B and samsung says in its page the best RES for this ...
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0answers
25 views

Invert *only brightness* for monitor

When using notebook in darkness it is more convenient to have the screen mostly black, compared to the default mostly white. The issue of inverting colors was discussed here frequently. One have a ...
0
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1answer
80 views

Unable to change backlight level

In Manjaro I can't set the backlight. I've tried to add: acpi_osi=Linux acpi_backlight=vendor to the kernel's command line but it didn't work. And I also added Option "RegistryDwords" ...
2
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1answer
264 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 ...
3
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1answer
107 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?
2
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1answer
298 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 ...
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0answers
719 views

Resolution problems with external monitor in ElementaryOS

The specifications are: sudo lshw -C video [sudo] password for cipricus: *-display description: VGA compatible controller product: RV380/M24 [Mobility Radeon X600] ...
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0answers
141 views

How can I get X to autodetect monitor specifications again?

I'm running fc19 in 64 bit. After going through the horrible process of trying to install kmod-nvidia, akmod-nvidia, and the proprietary nvidia driver, in an attempt to get CUDA working, I have rolled ...
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1answer
66 views

Monitor does not switch off

I set the monitor to switch off after 14 minutes. But what happens is that it cycles between being off a second and backlight comes on another. I am sure that this is a Linux issue for the monitor ...
4
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1answer
284 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 ...
5
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1answer
315 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 ...
7
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1answer
202 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 ...
0
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1answer
68 views

Replacement for standard KDE monitor manager?

My Linux experience is roughly a 4/10. I'm running the latest Debian-Wheezy install, and I've been having some trouble with the stock KDE display/monitor manager (to clarify as these terms seem to ...
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0answers
88 views

dbus problem with caja when using chocolate-doom on Linux Mint 14

I'm running Linux Mint 14 (Nadia) and I'm having a problem with chocolate-doom. When I run it, it changes the screen resolution but for some reason upsets caja (the file manager) like so (from ...
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2answers
478 views

Fedora 18 detecting non-existent monitor

I have an HP Envy dv7 with a dual boot setup of Win 8 and Fedora 18. On 07/22/2013 I updated all packages in Fedora 18 that had updates available. After a reboot, Fedora is now detecting that a ...
4
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1answer
327 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
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1answer
43 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 $ ...
2
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1answer
201 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 ...
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0answers
214 views

backlight doesn't work with Linux Mint 14 on my Gateway NV78 laptop

Here is my problem it is Bug 765438--the backlight will not work on my Gateway NV 78 laptop. Won't work with Linux Mint 14, ubuntu from ubuntu 11.04 onward won't work with ps-bcd. Of course it ...
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0answers
176 views

What is the difference between RGB and YCbCr?

In my Linux Mint ATI Catalyst setup I have set YCbCr as default for Color Pixel Format? What is the difference? I subjectively think that RGB (Full RGB) is better for my eyes. YCbCr seems to be ...
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0answers
120 views

Can Xorg use non-square pixels? [or can we fake widescreen in a non-widescreen resolution?]

I have an older PC connected to an HD television over VGA. The set of screen resolutions available for me to use are all 4:3 aspect ratio (or there abouts). Output from xrandr: $ xrandr xrandr: ...
1
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1answer
114 views

How to let GDM shares monitor configure with GNOME?

I'm using gnome under Arch Linux in my laptop with a 1920*1080 monitor on the left of it, I set the monitor as my primary display in GNOME and everything works fine after I log in. However, GDM ...
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0answers
111 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 ...
2
votes
1answer
224 views

Test for monitor resolutions

I want to buy a new display device, but I don't know if it will be supported by my card because the weirder/higher resolutions: 2560 x 1080, or 2560 x 1440. Is there any method to create a virtual ...
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0answers
141 views

Black screen closing windowed opengl apps : XIO fatal error 11

When I quit windowed OpenGL applications, mainly LWJGL ones, I get a black screen for approximately two seconds. The screen doesn't go in power save mode, it never shuts down: I can see the backlight ...
2
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2answers
335 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 ...
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0answers
143 views

Setting KDE to crop the laptop's screen to match external VGA device's ratio

I have a laptop with 16:9 screen ration. Sometimes I need to attach it to a projector via VGA. The projector ratio is 4:3. I use System Settings->Hardware->Display and Monitor->Size & Orientation ...
2
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1answer
155 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 ...
6
votes
1answer
644 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 ...
3
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2answers
564 views

KDE; each monitor another desktop

Is it possible to configure for example 4 desktops and switch them separately for each monitor?
2
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1answer
715 views

How do I set my monitor to widescreen mode in Mint when it doesn't recognize widescreen capability?

My computer is a former laptop from which I removed the screen. The graphics card is an ATI Radeon of some kind. I have it plugged into a small TV via VGA cable, but Mint still thinks I have the ...
2
votes
1answer
173 views

How to force X to use specific display, regardless if it is plugged in?

As it says in title: How to force xorg to use specific display trough HDMI, regardless if it is plugged in? I have TV that has some crazy "power save" option that can't be turned off and X thinks ...
1
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0answers
119 views

Low color depth while using X11 on a monitor

I am running Mint on a Late 2012 Mac Mini. While running X (KDE, LMDE or openbox) I notice a low color depth on My Dell S2209W monitor. I believe that the depth is not actually low as I can change ...
4
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2answers
8k 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. ...
2
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0answers
268 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. ...
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1answer
303 views

Connecting 2 monitors to a laptop

I have a laptop running Fedora 15, Gnome 3.0.1, and Mobile Intel® GM45 Express Chipset. I have a VGA monitor connected to it, as well as a DisplayPort to DVI adapter to connect a second monitor. Both ...
2
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0answers
221 views

Is it possible to set different resolution between console and X when Kernel Mode Setting is enabled?

My LCD monitor is dying. It has white screen issue: when power on, it's black screen (power LED is flashing), after a while (maybe one hour), it turns to white screen. Then I need switch to different ...
3
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1answer
237 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. ...
11
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2answers
723 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 ...
17
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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 ...