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

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12
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1answer
681 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 ...
6
votes
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 ...
0
votes
1answer
659 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 ...
1
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0answers
9 views

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 ...
46
votes
4answers
13k 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 ...
1
vote
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 ...
0
votes
1answer
19 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, ...
1
vote
1answer
118 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 ...
2
votes
1answer
142 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 ...
0
votes
0answers
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 ...
0
votes
0answers
36 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 ...
8
votes
2answers
156 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 ...
2
votes
2answers
597 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 ...
2
votes
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", ...
0
votes
1answer
275 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 ...
1
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0answers
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 ...
12
votes
6answers
8k 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 ...
2
votes
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 ...
0
votes
1answer
47 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 ...
3
votes
2answers
440 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 ...
0
votes
0answers
13 views

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 ...
2
votes
2answers
56 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, ...
1
vote
1answer
844 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 ...
0
votes
0answers
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 ...
0
votes
0answers
17 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 ...
-1
votes
1answer
127 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 ...
3
votes
0answers
46 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 ...
1
vote
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 ...
1
vote
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 ...
1
vote
0answers
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 ...
1
vote
0answers
47 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 ...
11
votes
2answers
15k 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. ...
0
votes
1answer
141 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 ...
0
votes
0answers
132 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 ...
1
vote
0answers
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 ...
0
votes
1answer
308 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 ...
3
votes
1answer
178 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 ...
2
votes
1answer
246 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 ...
12
votes
2answers
872 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 ...
1
vote
0answers
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 ...
1
vote
0answers
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 ...
1
vote
0answers
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 ...
1
vote
0answers
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 ...
5
votes
3answers
2k 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 ...
38
votes
6answers
17k 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 ...
4
votes
1answer
415 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. ...
4
votes
1answer
183 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. ...
1
vote
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 ...
2
votes
1answer
59 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 ...
4
votes
2answers
2k 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. ...