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

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Built-in display issue - Linux Mint on iMac (late 2009)

I successfully installed Linux Mint 17.3 Cinnamon 64-bit on my old iMac 21.5" (late 2009). When booting into Linux Mint (Live USB or installed version) there is still a bug: The built-in display ...
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1answer
12 views

Unset or change default “re-detect monitors” windows+p cinnamon keybinding using gsettings

I'm trying to unset or change the default Windows+P (or to be more exact Meta+P) "re-detect monitors" cinnamon keybinding via gsettings, but having a hard time finding it in the gsettings tree. In the ...
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1answer
21 views

Is framebuffer/vbe resolution a property of monitor or graphics hardware?

I have an AMD Radeon HD 4650 Graphics hardware, and a LCD monitor with an odd native resolution of 1440x900. I use debian stable on this system. When not using the firmware-linux-nonfree package, ...
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1answer
161 views

Multiple monitors HiDPI scaling

I have a Dell p2715q 27" 4K monitor and a HP 23xi pavilion 23" 1080p monitor for my dual monitor setup. The Dell monitor is currently running at a resolution of 3840x2160 @ 60Hz, while the HP is ...
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17 views

What's the best way to run two monitors using linux mint cinnamon?

I just built an HTPC and I'm running Mint Cinnamon 64bit. My goal was to have a desktop and with a streaming component - via the HDMI cable to my Samsung TV. So my question is... how best to use ...
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37 views

Monitor labels appearing in displays on Linux Mint MATE

Monitor labels have started appearing in the upper left corner of each display as shown in this screenshot showing my 2 displays: external monitor and laptop. The labels are always on top and do ...
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1answer
48 views

Is there a way to detect whether a screen is in on/off/standby mode from within Linux?

The screen in question is HDMI. The power off/on action is initiated by clicking on the on-screen capacitive button. I just need to know if there is a way to get events like "now the screen is on", ...
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1answer
281 views

Why is my (thunderbolt connected) monitor not detected in Fedora 23

I have a Dell XPS13 whose Philips UltraWide monitor connected is via a Thunderbolt 3/USB-C connection. As no monitor other than Apple monitors support this new fangled connection, I have an external ...
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1answer
129 views

How to manually configure a monitor in CentOS7, attached via KVM?

I have a fresh desktop install of CentOS7 with Gnome 3. I need to use this machine with a KVM but for some reason CentOS7 cannot detect my monitor through the KVM I have, so it defaults to "Unknown ...
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33 views

xrandr, xorg test screen error — default seems to be only valid mode

Running Arch Linux, kernel 4.2.5-1, Lightdm 1.16.5, xorg-server 1.17.4-2, nvidia 255.11-4, GTX 780 dual-link dvi out. I have a QNIX Evolution II 2710 and am attempting to overclock it but am running ...
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1answer
50 views

How to turn off the monitor under TTY

Turning off the monitor should be a really simple thing, but it isn't. I know that under Xserver, we have xset tool which allows us to turn off the screen via the following command: $ xset dpms force ...
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behavior of window manager when has expand monitor

In Debian system: two monitor: monitor A:1920x1080 monitor B:1360x768 monitor A is the major screen, has a fullscreen window. when i change resolution of A to 1024x768 (or any other resolution ...
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2answers
57 views

laptop with bad monitor turned into server: how to disable monitor

I have a laptop with an absolutly useless monitor (well, probably video card), so I put an Ubuntu 14.04 server on it. Of course if I turn it on, the monitor still turns on and blinks in vivid colors, ...
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33 views

Why does adjusting the value within /sys/class/backlight/apci_video0/brightness not adjust the backlight intensity of my monitor

I am having issues adjusting the intensity of my monitor's backlight on Debian (Jessie) through Gnome Shell. I am using Intel intergrated graphics and a Asus VG248 Monitor. The brightness slider in ...
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18 views

Copying video setup from Ubuntu to Debian - external monitor

My laptop has a dual boot Debian + Ubuntu installation. In particular I am using Debian 8.0 with stock kernel 3.16.0-4 (or equally 4.1.10 custom compiled, I tested it and it does not make any ...
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158 views

What display manager/window manager can support multiple monitors with different dpi?

There is no permutation that I have yet found of window manager / display manager, that correctly scales windows and applications on two different monitors with two different DPIs. I have a 40 inch ...
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50 views

How can I calibrate Zathura's zoom levels to my monitors?

I'm using Zathura (using the MuPDF plugin) to review various layouts for printing. It's important to me that I'm looking at things approximately the same size as they will come out on paper. I realize ...
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1answer
36 views

Looking for Desktop Environment to spread window over several screens

I have an older Netbook with a small monitor and would like to set up a new OS. (Haven't used it for a while) Before I was quite happy with Ubuntu/Gnome 2 which allowed to spread a window over two ...
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1answer
31 views

Script to swap monitors?

I have a laptop with Ubuntu 15.04 installed and an external VGA monitor connected and I usually turn my laptop screen off and use only the external monitor, but whenever I want to use only the laptop ...
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45 views

After booting into Debian 8 my VGA monitor goes black?

After I installed Debian 8 successfully on my machine (Intel Pentium CPU and no GPU ) and rebooted into GRUB2 successfully my monitor goes black (Still on) after it boots into Debian I can hear my ...
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48 views

Solving: Monitor settings default not compatible with laptop screen with Linux Mint Live DVD

I am talking a friend through the process of installing linux on his laptop. He chose mint as he liked the look of the GUI. However when he ran the live DVD he saw this: I recognise that this is a ...
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1answer
143 views

display port to VGA adapter

I have a laptop that only has a Mini DisplayPort (no VGA or HDMI out and no docking station) for output. I'd like to get an external monitor for it, but I've never used DisplayPort before. I'm just ...
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135 views

Mint: display setup lost after waking up, starting up or reconnecting second screen

I've been using Linux Mint 17 for a month and this problem occurred pratically since I first installed it. I have a dual screen setup where my laptop is set as the main screen on the right and my ...
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23 views

Color profile change seems to have no effect

I'm using a machine with both, Windows (10) and Linux Mint + Unity installed. Colors on Linux look quite strange and poorly calibrated, but everything looks fine on Windows. I was assuming that my ...
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1answer
310 views

Mirror screen with 2 different resolution displays, -with borders on larger resolution screen?

Help. The TV I'm trying to use as a monitor has overscan issues, it overscans both 1080p and 720p resolutions. For my use, I'd rather have borders compared to a cut off screen. I'm trying to get ...
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99 views

Overscanning Problem - NOT a TV setting

I'm using a 42" Philips LCD TV (42PFL3704D/F7) as a secondary monitor for my computer, running Linux Mint 17.2 and Windows 7. My primary monitor is a 22" LCD monitor, and it works fine on both ...
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47 views

Can't set xrandr brightness and gamma correctly

What is wrong? $ xrandr --output HDMI-1 --gamma 0.6:1.0:1.6 --brightness 0.76 $ xrandr --verbose | sed -n '/HDMI-1/,/Brightness/p' HDMI-1 connected 1920x1080+0+0 (0x6c) normal (normal left inverted ...
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1answer
179 views

Turn off the backlight of an external monitor

Is there a command-line way to turn off the backlight of an external monitor connected to laptop through HDMI? This works on laptop's monitor: echo 10 | sudo tee ...
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72 views

Script for changing monitor refresh rate when fullscreen on a specific website.

Premise I recently discovered this website where I can watch legal streaming of plenty of animes. They use a flash player and the CEO said that, for legal reasons, they can't use a HTML5 player. The ...
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28 views

Monitor won't sleep RHEL 6.5

I just installed linux and even after 30 minutes the monitor never goes to sleep. I have no idea where to look beyond the power management settings. Tried even setting the turn monitor off after 1 ...
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1answer
128 views

the moire pattern - how to calibrate my LCD? [closed]

I faced a strange issue (something like described here and here); I am not sure but when I look at the lcd screen it feels like an eyes strain or similar which is quite uncomfortable; On Linux Arch ...
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1answer
188 views

why isn't monitor listed under /dev in linux?

If /dev is suppose to list all the devices that is connected, like usb, hdd, webcam, how come on my ubuntu 15 VM I don't see a monitor? I am running the desktop edition so there should be a monitor. ...
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1answer
60 views

Turning off part of a monitor

I'm trying to disable the right third of my monitor, since it's broken. I can get less to be displayed using xrandr, but the monitor will then center the displayed stuff, so that's not quite what I ...
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138 views

debian wheezy switches from internal to external monitor after AMD proprietary installation

First I would like to say that this is my first try to set up a linux distribution. With taking Debian 7.8 I was probably over estimating myself. I do have the following video card: lspci -nn | grep ...
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1answer
171 views

How to set the monitor brightness gracefully at boot time?

I've been using a loop that contains xrandr --output VGA1 --brightness 0.3 in a bash script which will automatically execute right after logging in by gnome-session-properties (a.k.a. Startup ...
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31 views

Monitor not indentity

I use Debian 7.x and have two same monitors NEC MultiSync LCD2090UXi. But only one of them is detected as NEC. I used xrandr for change resolution of unidentified monitor and all was ok, but after ...
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1answer
122 views

Linux Mint: “Move to monitor 2”: but I don't have a second monitor. How do I fix this?

I have a fresh install (about a week old) of Linux Mint 17.1 Rebecca (love the name!), Cinnamon edition on my laptop. If I right click on a tab, I get the option "Move to monitor 2". The problem is ...
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1answer
418 views

Custom Resolution For vt Console in FreeBSD 10

In FreeBSD 10 there is new vt driver for having nice framebuffer console. By default it chooses resolution from the EDID data of monitor. However, I have a display that has incorrect EDID data. ...
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1answer
94 views

Persistent configuration of two screens

I want to configure two screens side by side and want the configuration to persist a system restart. (I'm using xfce on Xubuntu 12.) I've inspected old questions and the answers mentioned arandr and ...
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1answer
179 views

What decides where TTY and boot messages are displayed?

I recently switched from Fedora 21 to Arch Linux, and one thing that bothers me is that Arch does not put boot messages and TTYs' on all available outputs like Fedora does, but only on the primary ...
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1answer
86 views

Is there a way to adjusts the brightness of the monitor?

Using the softbuttons is annoying over time. I mean the real brightness of the backlight (Not X11 gamma). Which protocols are cabable of this? (DVI, HDMI, DP, guess VGA is not)
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783 views

How to rotate the LCD screen/framebuffer to 180 degree?

I have a custom board with a Freecale i.MX6Q SoC. I am using Linux kernel 3.03.35 and LCD is 3.5 inch RGB type display. I want to rotate my LCD screen to 180 degree. I tried a lot to pass parameters ...
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1answer
188 views

Thinkpad x201 Tablet, rotating Screen

I am running ubuntu 14.04 on thinkpad x201 tablet. I have tested the tablet modus once and the played a bit with the buttons under the screen (so rotated the screen). But now at the starting the ...
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178 views

Error in adding monitors for creating object cluster in Ceph

I've tried to install and config "ceph storage cluster" for creating ceph object storage. I'm following this manual. When I try to add 3 monitors by typing the command "ceph-deploy mon create osd001 ...
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1answer
854 views

hdmi not showing up in xrandr

Everything used to work until recently. Now, whenever I connect my HDMI monitor to my laptop nothing happens. Running xrandr doesn't show the HDMI output. Can anyone help out? I've been trying to fix ...
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How to set VertRefresh without restarting X?

Suppose a second monitor is attached to a running system, and the video driver has some trouble getting this monitor's EDID to get its limits of operation. The monitor has a native resolution of ...
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308 views

Run GUI Java jar on system boot Lubuntu

I have a PC which runs Lubuntu 14.10 without a monitor. The user is autologged in. I have created a Sysvinit script and installed it on /etc/init.d. My script amongst other things, starts a jar file ...
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378 views

GNOME prevents high resolution VGA without EDID info over VGA

I recently bought a KVM switch, consisting of a VGA switcher and switchable USB hub. This switch however, does not pass EDID info from the connected display to either of the two connected computers. I ...
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93 views

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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1answer
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 ...