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

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Xorg: Connect remote display

I'd like to use laptop's monitor as second display for my main Debian workstation. I need exactly second monitor, but not Debian's X11 on laptop.
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2answers
2k views

How can I change screen brightness in debian wheezy that installed in laptop?

My screen is just too bright. How can I adjust screen brightness? So far I tried the following: "Brightness and lock" settings doesn't work. Fn + F6 or F7 doesn't work. This doesn't work. This ...
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0answers
415 views

Ubuntu 12.04.5 laptop not detecting external monitor

I am running ubuntu on my work laptop. When I plug in my external VGA monitor it mirrors part of the screen (different resolution) but does not appear on my monitor list under System Settings > Screen ...
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1answer
7k views

Screen brightness adjustment not working in Ubuntu 14.04

When I try adjusting the screen brightness using the function keys on the keyboard, the adjustment scale is shown on the screen responding but the screen brightness is not adjusted. Tried ...
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4answers
17k views

Why is video tearing such a problem in Linux?

I've used many variants of Linux(mostly Debian derivatives) for over a decade now. One problem that I haven't seen solved satisfactorily is the issue of horizontal tearing, or Vsync not being ...
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2answers
2k views

Unable to start X Server with no screens, no xorg.config to edit

I am trying to start the X server (I have all the packages installed). The problem I am having is that the server is offsite, has no screen and never has had a screen connected to it and as a result ...
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1answer
663 views

Stretch window over two monitors with “gap” in between

I have a dual monitor setup with Compiz as window manager on Ubuntu 14.04. I can resize a window to stretch over both windows. However, while the physical display panels are a few centimeters apart, ...
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0answers
849 views

Cant change screen resolution in Kali Linux [closed]

So I bought a brand new laptop, I bought a Lenovo Y50. It runs a Nvidia GEFORCE GTX. I installed Kali linux on the HDD and the screen is to large and does not fit on the actual computer screen. ...
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1answer
871 views

How do dim screen, even if artifically, below the minimum?

My laptop (a Toshiba Sattelite) runs far too bright, even in the ambient light from outside in the day, and I need to be able to dim it below its minimum setting. ~#cat ...
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1answer
392 views

Dual Monitor mode in XFCE not working with xrandr

I am using Manjaro with XFCE on a laptop (Thinkpad x240). I have a docking station (Thinkpad Ultra Dock) with a monitor connected and that works like a charm. Today, I received my second monitor and ...
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1answer
1k views

Why is laptop screen called eDP1?

In my new laptop, using i915 and the intel driver of Xorg, the laptop screen is called eDP1 in Randr $ xrandr eDP1 connected 1024x768+0+0 (normal left inverted right x axis y axis) 277mm x 156mm ...
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2answers
1k views

configure second monitor

I have a new Debian machine and I'm trying to attach a second monitor to it. When I plug it in in my HDMI port, the second monitor duplicates the firts monitor, while I wuold like to extend it. My ...
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1answer
1k views

Unlisted screen resolution

On my new computer I have 2 screens connected on the igpu of a i7 processor, 1 using hdmi. the other using dvi. Both screens are the same but the one connected using hdmi has a wrong resolution inside ...
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0answers
141 views

how to use xrandr to mirror just a part of my main screen?

I want to make a mirror of just a part of my main screen to another monitor with different resolution. So it will be necessary to crop the desired area and apply a transformation to fit the screen ...
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0answers
190 views

External VGA monitor disappeared from display options list

I am running Linux Mint 17 Xfce on an HP Elitebook 840 G1 laptop. Up until just now I was using an external monitor, displaying identically the same thing as the built-in laptop display, connected via ...
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0answers
49 views

Fedora 20 Monitor Flickering /Tremble

I used a LCD monitor with Fedora 10. No problem. Then, I bought a new computer, Intel Atom (Packard Bell) and installed Fedora 20 KDE Plasma and attached the previous LCD monitor Everything fine, ...
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0answers
1k 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 ...
2
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1answer
1k 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 ...
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2answers
679 views

Matrix Structure for screen rotation

I can set my screen rotation to inverted with: xrandr -o inverted xinput set-prop 'ELAN Touchscreen' 'Coordinate Transformation Matrix' -1 0 1 0 -1 1 0 0 1 and back to normal with: xrandr -o ...
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1answer
3k 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 ...
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1answer
1k views

Change default monitor screen in GRUB 2

Recently my notebook screen died and I started using an external VGA monitor. When my computer boots the monitor is off until GRUB 2 starts the OS. Is it possible to make GRUB 2 display its menu in ...
4
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3answers
736 views

Screen size in FreeBSD in VirtualBox

I am installing FreeBSD 10.0 on VirtualBox, and I can't figure out how to change the size of my screan, in the virtualbox? The freebsd in the virtualbox treats my screen like it's 1/4th the size of ...
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2answers
3k 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. ...
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1answer
77 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 ...
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1answer
301 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 ...
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0answers
697 views

What is the xcalib -screen number for the HDMI monitor?

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 ...
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1answer
4k 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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1answer
754 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 ...
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0answers
346 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 ...
3
votes
1answer
844 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 ...
2
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2answers
1k 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
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1answer
264 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
283 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
103 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 ...
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1answer
503 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" ...
3
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1answer
2k 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 ...
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1answer
1k 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
2k 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 ...
12
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1answer
727 views

How to modify the default setting adopted by xrandr when connecting an external monitor?

I am confronted with a problem when connecting the external monitor while the computer is open. At that point it seems that xrandr adopts one of the combinations that do not work. As a workaround to ...
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0answers
574 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
113 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 ...
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1answer
1k 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 ...
12
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2answers
897 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 ...
8
votes
1answer
772 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
votes
1answer
98 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
174 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
1k 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 ...
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1answer
2k 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
67 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 $ ...
3
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1answer
576 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 ...