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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7
votes
0answers
2k views

Using an iPad or Nexus 7 as an Ubuntu Second Monitor

Is there any way to use an iPad mini or a Nexus 7 as a second monitor through a cable? I dont want something like vnc, I need it to work through the usb cable (or any other cable). I imagine that the ...
4
votes
0answers
1k views

15.10 Dell XPS 15 (9550) External Monitor not waking

I'm in Ubuntu 15.10, with Kernel 4.3. Things are working better than I could ever imagine. Other than ONE bug... When my laptop turns off it's screen and my external monitor's screen (I have it set ...
3
votes
0answers
3k views

Could not set the configuration for crtc 64 (15.04)

Sometimes when I attach an second LCD monitor (iiyama ProLite E2407HDSV) to my Asus N56J laptop and I try to extend my laptop monitor with the LCD I get the error: could not set the configuration for ...
3
votes
0answers
768 views

I'm unable to set 2560x1440 resolution on Intel HD 5000 using Displayport with PG278Q

I've just installed Ubuntu 14.04 LTS and I'm unable to get the monitor working. Screen works fine in BIOS and the same machine when booting to windows (before installing Ubuntu). I have tried the ...
3
votes
0answers
424 views

Monitor turning off randomly Ubuntu 13.10

I have a fresh installation of Ubuntu 13.10 with the latest updates on my PC. I am having a issue where the monitor seems to randomly disconnect. I cannot pinpoint what is causing this issue. It can ...
3
votes
0answers
2k views

How do I remove black bars on top and bottom of my display?

I have a problem with my ubuntu 12.04 LTS. It shows my Samsung Electric Company 17'' strange. It is not centered. I have a black space up and right. The pictures will explain better my problem: ...
3
votes
0answers
137 views

How to manage colours of monitor?

When I was on Windows 7 there was a program: Intel HD Graphics control panel. My notebook: Acer Aspire 5750G Integrated videocard: Intel HD graphics discrete video card: Nvidia 630m How can ...
2
votes
0answers
96 views

Two monitors - primary, secondary?

I use Ubuntu 16.04 LTS and to motherboard (GA-Z170-D3H with Intel HD Graphic 530) I have connected two monitors. First (primary) on DVI and second (secondary) on VGA output. Secondary monitor I can ...
2
votes
0answers
843 views

Dual display not working after 16.04 upgrade

I recently upgraded from 15.10 to 16.04 via dist-upgrade. Immediately afterwards, my second monitor stopped working. I am using an AMD 7850 APU, and both monitors are plugged in to the motherboard - ...
2
votes
0answers
190 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 ...
2
votes
0answers
296 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 ...
2
votes
0answers
296 views

At screen Resolution of 1366x768 monitor is flickering

My monitor starts flickering at higher resolutions but not in lower resolution like 1024x768 Below is the output to: sudo dmesg | grep -i 'Graphic\|video\|VGA\|error\|fail' [ 0.127671] DMAR: ...
2
votes
0answers
213 views

Ubuntu can't detect my second monitor

I know that there were already several people with the same problem, but I couldn't figure out how to solve this problem myself. I am a complete beginner with Linux and Ubuntu (I am using 12.04) and ...
2
votes
0answers
275 views

How to get the current display output using the command line?

I'm writing a script in which I need to switch between two displays, but I can't find a way to get the information about the current active output. Pretty much like this: if Display0 is off and ...
2
votes
0answers
48 views

Black lines and white dots after installation

I just put ubuntu 14.04 lts on another desktop, it loads all the way up, once it comes to home screen the monitor after a few seconds goes to black lines and white dots ,can someone tell me what might ...
2
votes
0answers
358 views

gcm-calibrate without hardware sensor

My monitor won't allow me to set the contrast when using DVI. And ubuntu/gnome won't allow me to set it via software without some fancy color calibration sensor. on system settings > color the "...
2
votes
0answers
455 views

No HDMI video output from GeForce GT 330M - Ubuntu 14.04 LTS

I have a Dell Vostro with an Nvidia graphics card. Although the VGA output works fine, when I connect up a monitor on the HDMI output, Ubuntu (14.04 LTS) recognises it, but the screen is blank (no ...
2
votes
0answers
492 views

Mirroring screen -> resolution problem

I have a ASUS N53S laptop, it has a 1920*1080 resolution build in screen. If it matters: GPU is Nvidia GeForce GT 550M. It has a VGA port which I don't/rarely use and a HDMI port. In my HDMI port I ...
2
votes
0answers
278 views

Ubuntu 12.04 cannot detect my second screen

What I wanted is a dual monitor setup but I got two monitors with the same content :(. I have an ASUS Z87-K motherboard and am connecting two monitors to its integrated graphics (HDMI and VGA). I ...
2
votes
0answers
76 views

Per-monitor font hinting

I have two displays out of which one is rotated to be vertical. Is there a way to set font hinting to be VRGB on vertical display and RGB for horizontal display?
2
votes
0answers
113 views

How can I make multiple monitors go to standby independently?

I have a two-monitor setup. One monitor I use all the time, the other sometimes. I find myself switching the second monitor on and off quite frequently, so as not to be distracted by its contents. Is ...
2
votes
0answers
114 views

How to keep the open windows in the right workspace while changing/rotating monitor?

when I plug in/out an external monitor monitor, or I rotate the laptop monitor, the windows/applications open in the several workspaces often mess up, such as in the following figure: How can ...
2
votes
0answers
620 views

Ubuntu Server changing Monitor from DVI to VGA

i have a little problem with my Ubuntu Server 12.04. I installed it yesterday with a DVI monitor connected. With the DVI Monitor, everything works fine. But when I try to connect it with an other ...
2
votes
0answers
193 views

How do I change the maximum resolution of my computer for multiple monitors?

I am trying to enable three monitors for my setup in Ubuntu 12.10. My card is a Raedon 5700 HD series. When I try to extend my display to any additional monitors, I get the following error: required ...
2
votes
0answers
136 views

monitor calibration does not work - the button to calibrate is grey

The calibration of my monitor does not work the the button to calibrate is grey. Pls take a look at the linked screenshot. Do I need to install any further packages to calibrate the monitor? ...
2
votes
0answers
796 views

I can't set 1280x1024 resolution in 12.04

After installing a fresh Ubuntu 12.04 on my PC, Ubuntu can't detect my monitor which is a Phillips 190c 19". With 10.10, I used 1280x1024 and on Nvidia drivers I was able to see my monitor brand. ...
2
votes
0answers
400 views

Ubuntu lost my external monitor

I installed ubuntu on an old Dell Latitude D630 laptop from a USB stick. I had an external monitor hooked in at the time, and during the installation, ubuntu found my external monitor without a ...
2
votes
0answers
2k views

Second monitor on NVidia card cannot detect proper resolution

A friend had given me one of his extra monitors, and even in Windows it gave me trouble in producing the right resolutions. I switched back to Ubuntu with the release of Pangolin but can't get it to ...
1
vote
0answers
33 views

Getting Monitor to Use it's Native 2560x1080 Resolution ; Ubuntu 16.04?

I have two monitors and it isn't letting me select 2560x1080 for my one monitor when I go into settings. I've searched and found a couple of answers but none seem to fix my issue. I have a Nvidia GPU, ...
1
vote
0answers
191 views

16.04, Nvidia GTX 950, HDMI: Unknown Display

I just freshly installed 16.04 including all updates. I installed the nvidia-367 drivers which work. Unfortunately, my Asus display that is connected to the Nvidia GTX 950 via HDMI, is not properly ...
1
vote
0answers
26 views

Monitor : no image after turning off then on

I would like to use my monitor as display for two computers, so I would like to switch the input as I want beetween the computer 1 and the computer 2. When I switch on the computer 2 everything is ...
1
vote
0answers
21 views

Monitor CPU and bandwidth usage of cpu and save to csv

I would like to monitor a specific process. I need to know timestamp, CPU usage (%) and Bandwidth (tcp upload and download in % or byte/s) of this process. I have tried something like this: ps -Ao ...
1
vote
0answers
28 views

Can't see login screen

I'm running Ubuntu 15.10. A few days ago the system started to set the monitor in sleep mode during boot up. Because of this I am unable to see the login screen. However, I am able to hear the "...
1
vote
0answers
101 views

Forcing 60Hz refresh with 4K monitor

I have a P2415Q Dell and it's been working brilliantly. Then this morning it inexplicably started refreshing at 30Hz and I cannot seem to set it back to 60Hz (there is no option higher than 30Hz in ...
1
vote
0answers
29 views

Ubuntu detects a fake monitor each reboot

When I turn on the Ubuntu, it detects a monitor that does not exist and I must desactive it each time I log in my session: What can I do to delete permanently this fake monitor? The system is ...
1
vote
0answers
434 views

Ubuntu 14.04 - Error on line 1 char 1

I have been using Ubuntu 14.04 for some weeks now dual booted with Vista on a Dell Inspiron laptop. I use a dual monitor set up which was working fine. I unplugged my laptop once from the external ...
1
vote
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
vote
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
vote
0answers
112 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: ...
1
vote
0answers
439 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 ...
1
vote
0answers
81 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 (...
1
vote
0answers
189 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. ...
1
vote
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
0answers
269 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: "...
1
vote
0answers
92 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 ...
1
vote
0answers
209 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". ...
1
vote
0answers
585 views

Run Ubuntu without monitor? Want to remote it with RealVNC

Friends, I am totally new to Ubuntu but I want to use it on an old computer of mine to run Plex Media Server to stream movies to my Chromecast. I have managed to install everything and it was all ...
1
vote
0answers
54 views

Display Settings on AC and Brightness key

I have recently installed Xubuntu 14.02 on a Lenovo Thinkpad E555 I got everything working however I have had these problems: When connecting AC power to the computer the Display Config comes up. ...