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

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5
votes
1answer
51 views

Set the screen brightness: xbacklight does not work on HDMI, xrandr --brightness does not stick

I'm trying to set custom screen bindings in i3WM and looking for a way to decrease/increase the brightness on button press. I've tried using the following: xbacklight -dec10 xbacklight -set 70 ...
0
votes
0answers
9 views

My monitors settings are not being loaded in LXQT on login

Desktop: LXQT 0.10 WM: Kwin LXQt is not restoring my monitors preferences on login irregardless to the preferences stored in the configuration file. I have a dual head display, HDMI and a DVI, ...
1
vote
1answer
20 views

3 Monitors on Fedora

I just got a new TV and I want it to be a 2nd secondary display, however it will only allow me to turn on 2 monitors at any given time. How can I make it allow me to use an arbitary number of monitors?...
0
votes
0answers
7 views

How to restore display of window after unplugging and replugging 2nd monitor?

I have an HDMI monitor which I unplug and plug back into my laptop from time to time. When I unplug the monitor, all the windows are moved onto the laptop display. However, when I plug it back in, all ...
13
votes
1answer
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 ...
0
votes
1answer
829 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 ...
0
votes
0answers
24 views

Kali Linux with Dual Monitors on Docking Station

I have a Lenovo Thinkpad P50 (Running the latest Kali OS) docked to a Thinkpad Docking station and the issue I am having is that it seems like the monitors and the laptop keeps switching from Mirror ...
3
votes
2answers
3k 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 doesn'...
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 ...
4
votes
1answer
751 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 ...
3
votes
0answers
17 views

Mirroring and expanding display on Arch with xfce -Display Settings

I have 3 monitors plugged into my PC. I want to have one primary display one expanded display and the third one should be mirrored from the primary display. Is there a way to solve this on xfce?
17
votes
1answer
9k 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 ...
0
votes
0answers
18 views

Linux disconnects monitor when it goes to sleep

When my LG W2442PE monitor goes to sleep, then -- I think -- Debian 8 considers it gone completely (as if it was unplugged), and Gnome reconfigures itself to use only one screen, the laptop internal ...
1
vote
0answers
16 views

can RandR display two parts of the same screen on one display?

Can I use RandR to display two different parts of the same screen twice, at different offsets, on one display? The desired display is a Head-Mounted Display (HMD) that is normally used for 3D ...
0
votes
0answers
27 views

External monitor signal on resume from suspend

Linux Mint XFCE 17.3 Config: XFCE config (xfconf) external monitor disabled X (-configure)d on terminal, creates xorg.conf, # screen 1 "vga monitor" - line ignored with number sign on serverlayout. /...
4
votes
2answers
273 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
0answers
14 views

How can I clone a specific work space to other outputs?

I am using i3-wm with Archlinux, and I nowadays are wandering that: is it possible to clone a specific work space to another output(monitor)? It is different from --same-as as well as --left-of --...
2
votes
1answer
3k 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 ...
3
votes
0answers
40 views

I have three monitors, two of them mirror each other and the last is blank

I have a triple monitor setup. I know all three monitors work and are plugged in. However on Fedora 23 my primary and secondary monitors mirror each other and my third monitor just on sleep and doesn'...
1
vote
1answer
245 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 ...
1
vote
1answer
83 views

udev monitor hotplug rule not running

I have setup a basic udev rule to detect when I connect or disconnect a mDP cable. The file is /etc/udev/rules.d/95-monitor-hotplug.rules KERNEL=="card0", SUBSYSTEM=="drm", ENV{DISPLAY}=":0", ENV{...
1
vote
0answers
12 views

How can I run a command if my screen changes state from standby to on and vice versa

I'm running linux mint 17.3. I have a backlight attached to my screens which are controlable via usb-serial. I would like to turn off the backlight automatically when the screens go to standby and ...
0
votes
0answers
14 views

Second monitor just started displaying “check signal cable” after kde login

I'm running Fedora 23 with KDE. I've installed the latest nvidia drivers directly with their .bin installer. Everything has been working fine. I haven't done any updates or installed anything new ...
1
vote
0answers
27 views

Why does `xrandr` say I have 3 HDMI and 3 DP ports while I have only one HDMI and one DP?

This is what xrandr shows on my machine: $ xrandr -q Screen 0: minimum 320 x 200, current 3840 x 1200, maximum 8192 x 8192 VGA1 disconnected (normal left inverted right x axis y axis) HDMI1 ...
2
votes
0answers
26 views

xfce every window on its monitors panel

I have triple monitor setup. I run manjaro 15.20 with XFCE4. I want that if a window, for example chrome, is on the leftmost monitor, it is on the leftmost taskbar/panel. This is how Windows does ...
4
votes
3answers
906 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 ...
1
vote
0answers
41 views

Build custom EDID with several modelines

I would like to build custom EDID using kernel sources. But I need to use several modelines - more refresh rates for same resolution. Is it possible using method in kernel sources? Could you please ...
5
votes
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 ppa:xorg-...
0
votes
1answer
673 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 ...
0
votes
0answers
22 views

Triple screens but Mirror on external Monitors

I have a Dell Latitude E7450 running Linux Debian Jessie with KDE and I'm using a Dell E-Port II (Model PRO3X) docking station. I'm connecting two external monitors, both via DVI, for a total of three ...
8
votes
3answers
413 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 ...
12
votes
1answer
756 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 ...
1
vote
0answers
41 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 ...
57
votes
4answers
21k 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
41 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
47 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, ...
2
votes
1answer
744 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
20 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 both?...
0
votes
0answers
82 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 ...
2
votes
1answer
142 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", "...
1
vote
0answers
105 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
175 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
469 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
16 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
97 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
1k 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
58 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
23 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 ...