Questions related to hardware displays, either internal (as in a laptop) or external (as in most desktop monitors, or projectors)

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8
votes
4answers
10k views

Adjusting display geometry in a virtual machine?

Running 11.04 beta in a Parallels 5.0 virtual machine, but this question will apply to any virtualization software. Parallels 5 Linux tools (guest additions) don't work for 10.10 and 11.04 and I ...
3
votes
2answers
4k views

frequency out of range - please change display mode

I just downloaded the latest version of the Ubuntu live CD, and have installed it on a desktop computer (a Fujitsu Scaleo P). Once installed it seems to work perfectly, although there are some updates ...
16
votes
6answers
7k views

Is there a software utility to adjust screen gamma/brightness/contrast?

I use to work at night and it is eye-hurting to watch at lightbulb-bright screens (I've got two - laptop's built-in panel and an external 18-inch CRT) in a dark environment. So I adjust my screens to ...
0
votes
1answer
1k views

How to try Ubuntu on a hp pavilion g7-1246ef computer that has no Linux suport for video card?

I want to try Ubuntu on a hp pavilion g7-1246ef computer. I got it as a 64 bit system with a win7 64 bit but now it runs a 32 bit win 7 (due to canon printer driver issue). The Windows device manager ...
16
votes
6answers
5k views

Is there a way to autodetect when a display is disconnected?

I am running 10.10 on a Dell Latitude with the latest Nvidia drivers. Basically what I want is when I disconnect my external display that everything goes back to the main one without having to change ...
6
votes
2answers
6k views

Unknown monitor, intel driver, want to set VGA resolution to widescreen TV

I have a Sony Bravia LCD television, which is now plugged into my laptop using a VGA cable. I am running an HP Compaq laptop, with a video driver of: 00:02.0 VGA compatible controller: Intel ...
8
votes
2answers
4k views

Triple-head on a Lenovo T520

Lenovo T520 with integrated Intel HD graphics + a NVidia card (Optimus) Ubuntu 11.10 on the computer. I would like to use the built-in screen plus two external screens. This PDF indicates that it is ...
3
votes
4answers
3k views

Error message “Signal out of range 92KHz - 58Hz ” when starting Ubuntu. What is wrong and how can I fix it?

My monitor has an Analogical connection. First I install windows 7, then I install Ubuntu 11.10, when this installation finish I restarted the PC. Any time there I turn on the PC I see the BIOS ...
13
votes
2answers
2k views

How to turn off the display via the command line?

Is there a way to turn off the display (enter power saving mode) using a command? For example, when the computer is inactive for a specific interval, the screen turns off to conserve energy. Is there ...
8
votes
4answers
17k views

How do I use a DisplayLink monitor?

I'm trying to connect an external monitor to my laptop via a DisplayLink USB adapter. When I plug in the USB cable, the screen turns bright green. This apparently indicates that the udflib displaylink ...
8
votes
3answers
3k views

How to get Lilliput USB monitor working?

Okay, I just got a Lilliput 7" USB Monitor: Unfortunately, I am having some trouble getting it to work in Ubuntu. It is a DisplayLink device, so it should work in Ubuntu. Here is the output of ...
3
votes
3answers
5k views

How do you change brightness, color and sharpness from command line?

I am controlling my PC with SSH and scripting. How can i change the brightness, color and sharpness from command line? Try 1: failed $ sudo redshift -t 5000:5000 -g .5 Cannot list GNOME panel ...
1
vote
2answers
828 views

Booting to no display

Everything was working fine this morning. In the afternoon, I tried to boot into Ubuntu Lucid Lynx once again and I see no display. I hear the sound prompts of the login screen, so I press enter and ...
8
votes
2answers
9k views

Ubuntu 12.10 “Turn screen off when inactive for: Never” still turns off

After a fresh install of Ubuntu 12.10, my screen still goes off after about ten minutes. I've been to the Brightness and Lock control panel. The Turn screen off when inactive for: setting is set for ...
3
votes
3answers
7k views

How do I fix overscan on my HDMI HDTV?

I've connected a HDTV with HDMI on my Radeon 4670, using the open source ati driver. However there is "overscan" which cuts off a bit of each edge of the screen, about the size of the gnome-panel. How ...
9
votes
3answers
2k views

Turn off monitor using command line

I am runnning Ubuntu Server on my laptop. There is really no reason for the screen to be on. I have been trying to use this command to turn the screen off: sleep 1 && xset dpms force off ...
3
votes
2answers
2k views

External Monitor Resolution doesn't go above 1024x768

I am trying to use a 24" external monitor as the primary monitor for my Asus EEE netbook. When I connect it, it works properly, except the max resolution available is 1024x768. Usually, I'd go into ...
7
votes
2answers
3k views

How to enable sub pixel hinting?

Fonts are displayed a little bit blurry on my TFT screen. I fixed this in previous Ubuntu releases by enabling sub pixel hinting in the font settings. But now I can't find any font settings dialog in ...
2
votes
2answers
3k views

Using a displaylink usb video adapter

I just bought this USB graphics adapter and I need to use it on Ubuntu 10.10. I followed this guide, but when I ran $ ./configure && sudo make install && make check nothing ...
7
votes
2answers
985 views

How to set up multiple GPUs (12.04)?

I have two GPUs: one Intel i915 integrated, and one NVIDIA 560 Ti. This is NOT a hybrid setup, nor a laptop. In Windows 7, each card is connected to a different monitor, with the NVIDIA doing any ...
5
votes
6answers
351 views

How can I disable backlight when I lock the screen?

When I lock screen, the display does turn black but the display isn't completely off. There is some light coming out of the display in screen lock mode but it get turned off when inactive for 10 ...
5
votes
2answers
9k views

Cannot set monitor to native resolution

problem is similar to so many other users, but solutions found do not work. Background: Fresh install of 12.04 (completely updated) on a Fit-PC2 (specs). Read in several places that the new 3.X kernel ...
1
vote
1answer
588 views

How do I adjust display size, not resolution?

I have my Ubuntu 11.10 PC plugged into a TV using an HDMI input. The edges of the screen get cut off, and I can't adjust the television's settings for HDMI. I can adujust the "position and size" on ...
6
votes
1answer
2k views

Why do my display settings say laptop when I'm using a desktop? [closed]

I just upgraded from 11.10 to 12.04 today. I noticed that in display settings it recognizes my system as laptop and I am actually running a desktop with a viewsonic monitor. How can I fix this?
2
votes
3answers
2k views

Settings for multiple monitors are not stored

I am running Ubuntu 12.04. on a Lenovo Thinkpad T400. I connected an external monitor as a second display. The laptop stands under the external screen. The laptop has a native resolution of 1440x900 ...
1
vote
2answers
3k views

How to make Ubuntu recognize an unknown external display (so I can adjust its resolution)?

I have a Dell laptop with an external monitor attached (a Samsumg SyncMaster 931c). My laptop display was recognized, and I can adjust its optimum resolution. My external display is still unknown, ...
1
vote
0answers
375 views

How to get display settings persistent? [closed]

I have the following set-up: laptop with screen: 1366x768 external LCD monitor with: 1024x768 The monitor is permanently connected and recognised by the system. Screen is expanded to the ...
1
vote
1answer
2k views

Fn+F2 LCD/CRT display toggle stopped working in 11.04

After an upgrade from 10.10 to 11.04 Fn+F2 LCD/CRT display toggle button stopped working on my MSI U230 Light. Instead, pressing Fn+F2 opens Dash. Is there any other way to toggle between LCD/CRT or ...
1
vote
2answers
461 views

Where can I find wayland?

Mark Shuttleworth writes that wayland will be replacing X in the future in Ubuntu. Where can this software be found?
0
votes
4answers
10k views

Ubuntu 12.10 won't display properly after kernel upgrade

After updating a system today, Ubuntu's doesn't display correctly. The desktop now looks like this. It was working properly before. I had to use the terminal to run synaptic package manager, so I ...
11
votes
5answers
5k views

Change Primary monitor

How do I change my primary monitor without using the command line?
5
votes
3answers
15k views

How to add display resolution fo an LCD in Ubuntu 12.04? xrandr problem

I am fresh for Ubuntu and Linux in general. I have installed Ubuntu 12.04 and stuck trying to setup correct resolution for my LCD display. The native resolution for the LCD is 1920x1080 here is the ...
5
votes
3answers
2k views

Upper half of laptop screen becomes black when I plug in an external LCD

My laptop has Intel Mobile GM965/GL960 integrated graphic controller and the screen size is 1280x800. When I plug another LCD (ThinkVision 22") the upper half of the laptop screen becomes black. I ...
4
votes
1answer
1k views

Use 3 monitors w/built-in intel adapter + two old nvidia PCI cards on 10.10?

I'd like to move from windows with my current workstation. The only thing holding me back is that I have 3 monitors connected to the system and I really take advantage of the real estate when working. ...
4
votes
5answers
852 views

Upgrade to Maverick broke the display resolution - Dell Studio

My system used to display the Full HD resolution - the native, very well on the Karmic. I upgraded my system to Maverick and the maximum 16:9 resolution X server supports is 1280x720. As far as I ...
3
votes
1answer
768 views

Why does powertop think I have two displays?

Ok, so in powertop (version 1.97), in both the "overview" and "device stats" sections, I see two devices, each called "display backlight". One shows the correct percentage of use, e.g. if I lower ...
3
votes
3answers
3k views

Monitor resolution messed up, monitor is unknown

Is there anyway to reset my monitor? My moitor is using the xorg.conf file. I use 10.04, without any Graphics Card. My monitor is an Acer X193W, with a native resolution of 1440x900. This is my ...
3
votes
4answers
15k views

Ubuntu not detecting second monitor

I'm running Ubuntu 12.04 on a Lenovo x61s Thinkpad. As the screen's rather small and I want to do some video editing, I thought I'd plug in a monitor and use that. The monitor is Relisys JM777 (quite ...
3
votes
1answer
3k views

How do I get 1366x768 resolution working on 12.04 with nvidia GTX275

My PC (VGA Nvidia GTX275) is connected directly to a TV (Philips 42" lcd) and Ubuntu does not recognize the native resolution, the closest working resolution is 1280x768 I have tried some xorg tricks ...
2
votes
0answers
613 views

Display difficulties with Ubuntu 12.10, Dual Monitors, and ATI HD 5800

I have the ubiquitous and difficult display problems. I have a very limited understanding of everything regarding graphic display mechanics, and Gnome specific terms, so please let me know if you ...
2
votes
1answer
2k views

VGA Monitor won't display after NVIDIA driver install on Ubuntu 12.04

I recently installed Ubuntu 12.04, and the first thing that came up was the driver manager, which told me to install the drivers for my nvidia graphics card (I don't remember what it is). I have a ...
2
votes
2answers
473 views

Change the brightness adjustment interval

So whenever I hit my dim/brighten keys on the keyboard, a notification bubble pops up with the screen brightness. All that's fine, but I would like to be able to change how much the brightness changes ...
1
vote
2answers
190 views

How to get back my proper display driver settings after (wrongly) installing AMD Catalyst Control Center?

After having this problem, and following this answer, I have installed AMD Catalyst Control Center (fglrx-amdcccle) and after reboot my display was all wrong, stuck to 1280x1024. I have un-installed ...
1
vote
3answers
4k views

Display too dark on an Acer emachines E725

I just did a wubi install of Ubuntu 11.10 ony my acer emachines E725. After I reboot, the display is too dark that I can only see the white backgrounds and my mouse (when it is in the middle of the ...
1
vote
0answers
684 views

Desktop effects could not be enabled with Intel core i7 2600K [closed]

I have installed Ubuntu 10.10 (32 bit) on a 'budget' SandyBridge PC. The moterhboard is Asrock h67m. No extra graphic card. When I try to use 'Normal' or 'Extra' Visual effect I get this message: ...
8
votes
3answers
5k views

External monitor set as primary even when disconnected from laptop

My Lenovo X200 laptop has developed a problem recently whereby I get a blank internal screen on booting into Ubuntu 11.10 (display works normally during boot and I get a moment of desktop before it ...
7
votes
2answers
2k views

How can I solve display glitches and poor performance with ATI fglrx driver on my ThinkPad X100e?

I noticed that video performance on my Thinkpad X100e was very poor compared to Windows 7, so I installed the ATI fglrx proprietary drivers by using the "Additional Drivers" dialogue box. The system ...
4
votes
2answers
557 views

How do I reset my display settings from the command line?

I'm running 12.10 on a dell e5400 laptop and I used xrandr to get the dual monitors working that I connect through a laptop dock. I used xrandr again to switch back to the laptop display when I ...
2
votes
1answer
373 views

Overscan compensation issue

Since upgrading to 12.10 I cant permanently fix overscan on my tv. Using this code I can fix the overscan sudo nvidia-settings --assign CurrentMetaMode="DFP-1: 1920x1080 { ...
2
votes
0answers
70 views

How to figure out if a window is actually displayed on the screen using shell script?

I'm trying to write a shell script that recognizes if Thunderbird window is displayed and if so it disposes it to the messages tray. I'd like to use it in this answer of "How to keep Thunderbird and ...

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