Questions that relate to the electronic display (sometimes called a visual display unit) for computers. Typically questions relate to visual issues such as flickering, resolution, black-screens together with the usage of single and multiple displays.

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58 views

LXDE OpenGL program doesn't start when no monitor is connected?

I have a OpenGL program in my device running LUbuntu which needs to turn on a monitor (well, a video projector) when it is ran. It appears LXDE crashes the program before it gets a chance to turn the ...
0
votes
1answer
97 views

Changing resolution for samsung monitor?

I am using ubuntu from a usb for the first time and i cant seem to change the resolution to full hd ( 1920 x 1080 ) on my samsung monitor, the max res is 1280 x 1024 and my monitor is unknown and my ...
0
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0answers
52 views

Computer Boots But Sometimes Monitor Does Not Start

I tried searching for an answer but I did not find one. If it's already been asked, my apologies. The problem is, when I start my samsung laptop it gives me a black screen and stays like that ...
1
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0answers
21 views

Can't get dual monitor to work on Ubunt 12.04 (ATI Radeon 2400HD)

I had Ubuntu 14.04 and tried various methods detailed online, but could not get dual monitors to work; therefore I downgraded to 12.04. Still having trouble. Using the generic driver, when I go to ...
1
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1answer
143 views

Desktop monitor brightness adjusting

Is it possible to adjust desktop monitor brightness like on laptops? Yes all desktop monitors have separate menu for it. But is it possible to change this to something like Winkey+(F1..F12)? ...
1
vote
1answer
227 views

How to turn off screen (headless installation)

How can I turn off screen? None of the answers here helped me. I tried sudo vbetool dpms off but that failed silently and the screen remained on. This is a headless Ubuntu server installation on a ...
1
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0answers
39 views

How do I make the disk decryption password prompt show up on my DVI-D monitor with an AMD video card?

I have a Dell box running Ubuntu 15.04. Because it's a work machine, its disk if fully encrypted, and therefore the system requires a disk decryption password at boot time. Because I needed to ...
1
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0answers
108 views

Can't install Ubuntu because live system uses too high monitor frequency

I just downloaded Ubuntu 15.04 and I put it into a pendrive. When I boot the pendrive, Ubuntu logo starts to charge but after a while, the monitor turns black with the mesaje "Frequency out of range: ...
0
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1answer
488 views

could not switch on monitor configuration

On my asus x553 I have wiped the hard drive to eliminate win 8.2 and installed Ubuntu 14.04. On boot up I get the Error message could not switch on monitor configuation and als ocould not set ...
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0answers
22 views

Computer won't restore from monitor power saving

When monitor power saving mode is on and the monitor falls asleep, I can't wake it up and have to do a hard shutdown. I've tried pressing keys, moving and clicking the mouse, unplugging and replugging ...
2
votes
1answer
99 views

Xubuntu 14.04.3 - Monitors turn of during boot

After installing Xubuntu 14.04.3, I can not boot into the system. Instead, after selecting ubuntu within the grub menu and pressing enter, a few messages are shown and the monitor turns of after ...
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0answers
137 views

Force screen resolution for monitors using xrandr

I'm using two monitors and one of them is working properly. I have the option to set the screen resolution to 1366x768 (16:9) and is recognized as AOC Intl 19"" (plugged into my HDMI port with an ...
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0answers
55 views

How to choose monitor resolution that isn't showing up in “Display” Settings dialog

After installing Ubuntu 15.04, I can no longer find my monitor's native resolution in the Display Settings dialog. I can only select the modes "1024x768" and "800x600". How can I fix this?
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1answer
121 views

Laptop suspends on shutdown with lid closed

I'm struggling to phrase this question very coherently, but here's what I'm struggling with... I have a Lenovo laptop from a few years ago. Recently, I put ubuntu on it. As it stands right now, I've ...
0
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0answers
133 views

Black border with Ubuntu 14.04 on Raspberry Pi 2 Model B

As the title states, I'm getting a black border on my screen running Ubuntu 14.04 on a Raspberry Pi 2 Model B. I've tried modifying the /boot/config.txt file and tweaking/disabling the overscan, as ...
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0answers
33 views

High resolution but 'empty' spaces on the monitor

I'm using Ubuntu 15.04 on my new notebook. I tried to change my screen display resolution to make it fit all the screen but I don't know why even if I set the high resolution possible I still can see ...
0
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0answers
19 views

Why won't my monitor get a signal after bringing PC out of suspend?

Every time I suspend my PC and then press the power button to start it up again, my monitor remains dark though the PC is running. Why is this?
0
votes
0answers
397 views

2nd monitor detected but no signal

Beginner here,(Ubuntu 12.04.1LTS) Currently this is my setup- 1.Vga - vga (1st monitor). 2.Hdmi to Vga converter - vga (2nd monitor). 3.HD4870 with fglrx drivers. After i connected my ...
0
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0answers
528 views

Can't disable automatic mirror display

I just plugged an external display and the system detected it automatically. However, the two monitors display the same and when I go to Display preferences, it looks like it wasn't detecting any ...
0
votes
1answer
51 views

Monitor goes black

Just installed 14.04 on my computer and after I solved my core-heating-problem, the new problem is that after 1 minute on desktop, either doing things or not - the monitor goes black.. No time to ...
2
votes
0answers
179 views

Second external monitor connected but screen is black Ubuntu 14.04

I have a strange problem with my second external monitor. It won't wake up automatically when my laptop starts, or when the laptop wakes up from standby or sleep mode. It will be on if I manually ...
0
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0answers
118 views

intel-virtual-output -f XIO fatal error

After a fresh installation of ubuntu 15.04 i've updated the packages. And whenever i try to run intel-virtual-output -f it give me :- XIO: fatal IO error 11 (Resource temporarily unavailable) on X ...
0
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0answers
161 views

XB240H Abprz (144hz, 1080p, GSync) only running at 60hz without GSync! Solution?

I run Ubuntu GNOME 14.04 Trusty Tahr with a GTX970, 4790k, 16gb DDR31866, etc. I have the XB240H 24 inch, and it is running at 60hz. The on-board monitor options do not let me modify this, and when I ...
0
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0answers
114 views

Grub acting up, and monitor resolution not detected - Ubuntu 14.04 Gnome

I've been having a lot of trouble with this lately and wanted to check if anyone here had a solution. I installed Ubuntu GNOME 14.04 on my secondary drive, but now when I boot up I get into the GRUB ...
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0answers
27 views

Ubuntu Gnome 14.04.2 not detecting my monitors resolution [duplicate]

I just installed Ubuntu Gnome 14.04 LTS on my gaming/design machine! (Specs: i7 4790k; Strix 970; MSI G45-z97;) and when I go into my display settings it says I'm using a built-in display and will ...
1
vote
1answer
105 views

How come I don't see grub every time I boot? [duplicate]

I have noticed that when grub boots up I don't get a black screen on my monitor. I want to make it so that it will show every time I boot, not just when I turn it off manually and then turn it on ...
0
votes
1answer
86 views

Lubuntu boot: no signal once in two

I have a strange problem with a fresh installation of Lubuntu 15.04 (Ubuntu 11.04 was ok). Sometimes when I boot the computer the monitor goes in "No DVI signal" mode right after grub selection. ...
0
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0answers
26 views

Screen scaling corruption after error dialog

I got an old laptop (Lenovo X300) someone was throwing out and decided to put Ubuntu on it. I haven't messed with Linux much since the Redhat 6 days. Periodically, an error dialog pops up saying an ...
0
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0answers
32 views

Can't find monitor type on MacBook Pro - 14.04

Having some serious issues locating the name of my monitor for use in the command iw wlan0 interface add mon0 type monitor. I have the Mid-2014 MacBook Pro, also known as version 11.1. I'm running ...
2
votes
0answers
277 views

Extend desktop to second monitor on LXDE

I have connected external SVGA monitor to my asus 1025C that runs Ubuntu+LXDE. Currently both monitors show the same picture and second display has not native resolution. I found only one place ...
1
vote
0answers
77 views

mac mini 2014 monitor wake up issue

My 2014 ubuntufied macmini wakes up from sleep but the monitor doesnt. i guess the mini is missing out sending a signal to it. i had the same issue in osx but after the latest update that went away (...
0
votes
1answer
209 views

Refresh rate won't accep 120 hz

I can't get my monitor to set the refresh to 120hz. I'm using an nvidia gtx 970. The outputs are below (I'm using a 120 hz monitor & I was able to set it to 120hz in Ubuntu 15.04 when using an AMD ...
1
vote
1answer
101 views

Monitor showing as DVI although plugged in as VGA

Recently I had my computer upgraded because I was having problems getting Ubuntu 14.04 to work. I now have more than the min requirements but am still having trouble getting the graphics to work once ...
1
vote
0answers
174 views

I have a “Element” brand monitor and the driver show up unknown

Have the latest 14.04 Ubuntu with a GeForce 7600GS video card. I have downloaded the latest Nvidia 304.125 from Nvidia 304 open source. I have a "Element" monitor. My display shows up as unknown. ...
0
votes
1answer
650 views

How to calibrate monitor in Ubuntu Mate

Question: How can I calibrate my monitor in Ubuntu Mate without extra hardware? Details: I have installed gnome-color-manager but no gui is available and I can't find an ICC profile file for my ...
2
votes
1answer
121 views

Screen has broken color set after a while - Ubuntu 14.04

After a while of no activity the screen locks, but when I log in the screen looks like this: :D I am sure it is something with the software, not the hardware as I have never experienced similar ...
1
vote
2answers
45 views

How can I tell ubuntu to use only the external monitor?

I use ubuntu 14 with an external monitor. It seems there is some problem with the internal graphics so I want to tell ubuntu to use only the external monitor which is connected with hdmi. How can it ...
5
votes
1answer
1k views

Spyder5 Monitor Calibration Ubuntu 14.04

I tried to get the Spyder5Express running under Ubuntu 14.04. Installed is dispcalGUI and the Argyll_V1.7.0 software. Unfortunately the device is neither detected in the GUI nor in the Terminal. I ...
5
votes
1answer
424 views

Why isn't Gnome Color applying my color profile?

I'm trying to use the Gnome Color (default Color app in /usr/bin/gnome-control-center.real color) to manage my laptop's color profile. However, only some of the color profile actually change the ...
1
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0answers
93 views

How To Increase Screen Resolution?

I have a 1600x900 monitor attached to a 1280x768 laptop, only the latter resolution is available, how do i increase it to my monitor's max resolution? the xrandr result is: Screen 0: minimum 8 x 8, ...
1
vote
1answer
417 views

External monitor is disabled after resume (only on 15.04)

I recently installed ubuntu 15.04 and most things just work out of the box, awesome! But there is on annoying thing: I have an external screen connected to my machine (T450s, via docking station) and ...
1
vote
1answer
272 views

Dual Monitors Stayed Mirrored

I am running a T450 with Intel HD Graphics 5500 with Ubuntu 14.04 LTS. I am also using a Lenovo Ultra Dock that supports a DVI input and a VGA input. Whenever I connect two monitors to both the DVI ...
1
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0answers
241 views

Display color calibration error “unknown calibration display type selection”

Fresh installation of Ubuntu 15.04. Running Settings-Color-Calibrate Have "Eye-one display 2" sensor connected and working. Getting the message during step be step calibration configuration: "...
7
votes
1answer
256 views

15.04: Launching some programs turns monitor off and on (like for a resolution change)

I just upgraded from 14.10 to 15.04 and one of the first things I noticed is that the monitor often behaves like it was changing the resolution (a click sound from inside the monitor, black screen, ...
1
vote
0answers
90 views

how to stop automoving opened windows when second monitor connected in ubuntu 14.04?

I am running Ubuntu 14.04 on my notebook and when i connect external monitor if it has "left" position configured, all opened windows move to external monitor, if external monitor has "right" position ...
1
vote
0answers
3k views

Resolution Scaling on 4k Laptop

I've tried following directions at https://wiki.archlinux.org/index.php/HiDPI and http://www.makeuseof.com/tag/linux-hidpi-support-for-gnome-kde-xfce-cinnamon-and-firefox/ to make my Ubuntu ...
1
vote
0answers
38 views

Having two x-servers although booting with second monitor turned off (and turned on later)

I'm using a GT 730 chip with two monitors - LCD on DVI and TV on HDMI. The LCD is the main monitor and it is used all the time for work and browsing. The TV is used occasionally, for movies, so it is ...
2
votes
2answers
2k views

Ubuntu 14.04 with unrecognized monitor (or without monitor) - boot problem

I've Ubuntu 14.04 installed on my computer. I need to start it even if not any monitor is plugged. Basically I need to do that because at the startup my monitor isn't recognized but plugged in. That'...
1
vote
0answers
200 views

Dual monitor with single motherboard (VGA and HDMI) black fews second when select “System Settings” in menu bar

I had single motherboard to use dual monitor WITHOUT additional graphic card. One monitor export VGA and another monitor export HDMI. It perform normal but only when selecting "System Settings". ...
4
votes
1answer
231 views

Ubuntu Phone as PC

I feel "smart-phones" are computers, but none of OS is made to support desktop applications. Will Ubuntu Phone have that feature in near future. Will we be able just to connect phone to a monitor and ...