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Split monitor in two

Is there a way to split a single monitor in two, so that the two halves will be treated as separate monitors? This means that windows should fill half the screen when maximized. Also, gnome panels should fill half the screen.


Source: (StackOverflow)

Display monitor info via command line

Is there a way to query monitor information from command line? For example, get monitor model, similar to e.g. what lspci does for graphic card info, or whether it's currently on or off, things like that.

If possible, what kinds of basic information such as the above can be easily gathered? For example, is it possible to determine if monitor is in portrait or landscape position? Or if it has built-in speakers or not?

Command line is the preference, but if there's a GUI method, I'd like to hear about it, too.


Source: (StackOverflow)

How to calibrate the monitor on an Ubuntu system?

What is the procedure to calibrate the monitor and what software to use?

Edit: I think what I mean is "colour profile" if that's what it is called. I happened to notice that the same photos look very differently indeed on my home laptop and on other computers…


Source: (StackOverflow)

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 don't want them. I like how the VM is integrated as is. The only thing that needs tuning is the screen geometry.

None of the options in the Systems -> Preferences -> Monitors fit my display perfectly. I need it at 1080 x 1920 (9:16) or 1920 x 1080 (16:9).

Many different resolutions work (see screen-shot bellow), among which are:

  • 1680 x 1080 (too narrow horizontally and a bit too short vertically)
  • 1920 x 1200 (perfect horizontally, but a bit too tall vertically)

How can I adjust the screen resolution (display/monitor size) manually?

What I tried so far

$ cvt 1920 1080
# 1920x1080 59.96 Hz (CVT 2.07M9) hsync: 67.16 kHz; pclk: 173.00 MHz
Modeline "1920x1080_60.00"  173.00  1920 2048 2248 2576  1080 1083 1088 1120 -hsync +vsync
$ sudo xrandr --newmode "1920x1080"  173.00  1920 2048 2248 2576  1080 1083 1088 1120 -hsync +vsync
xrandr: Failed to get size of gamma for output default

$ cvt 1080 1920 
# 1080x1920 59.96 Hz (CVT) hsync: 119.26 kHz; pclk: 176.50 MHz
Modeline "1080x1920_60.00"  176.50  1080 1168 1280 1480  1920 1923 1933 1989 -hsync +vsync
$ sudo xrandr --newmode "1080x1920"  176.50  1080 1168 1280 1480  1920 1923 1933 1989 -hsync +vsync

$ sudo xrandr -q
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 640 x 480, current 1920 x 1200, maximum 1920 x 1200
default connected 1920x1200+0+0 0mm x 0mm
   1920x1200       0.0* 
   1600x1200       0.0  
   1680x1050       0.0  
   1400x1050       0.0  
   1280x1024       0.0  
   1440x900        0.0  
   1280x960        0.0  
   1280x800        0.0  
   1024x768        0.0  
   800x600         0.0  
   640x480         0.0  
  1920x1080 (0x11d)  173.0MHz
        h: width  1920 start 2048 end 2248 total 2576 skew    0 clock   67.2KHz
        v: height 1080 start 1083 end 1088 total 1120           clock   60.0Hz
  1080x1920 (0x11e)  176.5MHz
        h: width  1080 start 1168 end 1280 total 1480 skew    0 clock  119.3KHz
        v: height 1920 start 1923 end 1933 total 1989           clock   60.0Hz

The 2 new resolutions do not show up in the Monitor Preferences GUI: enter image description here

Trying Takkat's Solution

Here is what I do and get:

$ gtf 1920 1080 60 -x

  # 1920x1080 @ 60.00 Hz (GTF) hsync: 67.08 kHz; pclk: 172.80 MHz
  Modeline "1920x1080_60.00"  172.80  1920 2040 2248 2576  1080 1081 1084 1118  -HSync +Vsync

$ sudo xrandr --newmode "1920x1080_60.00"  172.80  1920 2040 2248 2576  1080 1081 1084 1118  -HSync +Vsync

$ sudo xrandr --addmode default 1920x1080_60.00

$ xrandr 
xrandr: Failed to get size of gamma for output default
Screen 0: minimum 640 x 480, current 1680 x 1050, maximum 1920 x 1200
default connected 1680x1050+0+0 0mm x 0mm
   1920x1200       0.0  
   1600x1200       0.0  
   1680x1050       0.0* 
   1400x1050       0.0  
   1280x1024       0.0  
   1440x900        0.0  
   1280x960        0.0  
   1280x800        0.0  
   1024x768        0.0  
   800x600         0.0  
   640x480         0.0  
   1920x1080_60.00   60.0  

I also tried gtf 1920 1080 60 -x.

In both cases I can't switch to that resolution and get:

  • Could not set configuration for CRTC 262

enter image description here

All the other resolutions work.


Source: (StackOverflow)

How do I look up the hsync/vsync values for my monitor?

I'm trying to get my computer to use the correct resolution. For that I need to specify the horizontal and vertical sync values in the configuration file (xorg.conf):

Section "Monitor"  
  Identifier     "Monitor0"  
  VendorName     "Unknown"  
  ModelName      "CRT-0"  
  HorizSync       31.0 - 81.0  
  VertRefresh     56.0 - 76.0  
  Option         "DPMS"  
EndSection

Let's say these values for HorizSync and VertRefresh are somehow wrong for my monitor.
Where do I find the correct values?

Note: This is a "dummy" question -- with the help from the chat, I already found part of the answer, and I am now going to add my own answer to document a solution that is hopefully universal.


Source: (StackOverflow)

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 recommended in the Update Manager.

My problem is that, after having installed these updates and restarted the computer, I get this message on my monitor, and no Ubuntu interface is visible:

frequency out of range - please change display mode

I do not know how to change this when I can't access an interface. Is there a command that will bypass trying to boot the GUI and let me change the display mode via a CLI? I am brand new to Ubuntu and any help on this would be much appreciated.


Source: (StackOverflow)

How do I set the correct monitor resolution with Nvidia drivers for a monitor that does not send EDID?

I keep having trouble getting the correct monitor resolution - every time I reinstall, I happen to use a newer Ubuntu release and the old tricks I used to know no longer work. Instead of leaving a long trail of questions for every new release, I am looking for a more universal and timeless solution.

What's the correct way to set the correct monitor resolution with an Nvidia GPU for a screen that does not send EDID values?

Note: This is a "dummy" question -- with the help from the chat, I already found the answer, and I am now going to add my own answer to document a solution that is hopefully universal.


Source: (StackOverflow)

How do I set the native resolution on an HP Mini 210-1004sa?

FYI: My Netbook model is HP Mini 210-1004sa, which comes with Intel Graphics Media Accelerator 3150, and has a display 10.1" Active Matrix Colour TFT 1024 x 600.

I recently removed Windows 7 Starter from my netbook, and replaced it with Ubuntu 12.10.

The problem is the OS doesn't seem to recognise the native display resolution of 1024x600 i.e. the bottom bits of Ubuntu is hidden beneath the screen & the only 2 available resolutions are: the default 1024x768 and 800x600.

I've also thought about replacing Ubuntu with Lubuntu or Puppy Linux, as the system does run a bit slow, but I can't, as then I won't be able to access the taskbar and application menu which will be hidden beneath the screen. Only Ubuntu with Unity is currently usable, as the Unity Launcher is visible enough.


I was able to define a custom resolution 1024x600 using the Q&A:

but when I set that resolution, there appears a black band at the top of the screen and the desktop area is lowered, with bits of it hidden beneath the screen. I tried leaving it at this new resolution and restarting the system to see if the black band would disappear & the display will fit correctly, but it gets reset to 1024x768 at startup and displays following error:

Could not apply the stored configuration for monitors

none of the selected modes were compatible with the possible modes:

Trying modes for CRTC 63
CRTC 63: trying mode 800x600@60Hz with output at 1024x600@60Hz (pass 0)
CRTC 63: trying mode 800x600@56Hz with output at 1024x600@60Hz (pass 0)
CRTC 63: trying mode 640x480@60Hz with output at 1024x600@60Hz (pass 0)
CRTC 63: trying mode 1024x768@60Hz with output at 1024x600@60Hz (pass 1)
CRTC 63: trying mode 800x600@60Hz with output at 1024x600@60Hz (pass 1)
CRTC 63: trying mode 800x600@56Hz with output at 1024x600@60Hz (pass 1)
CRTC 63: trying mode 640x480@60Hz with output at 1024x600@60Hz (pass 1)
Trying modes for CRTC 64
CRTC 64: trying mode 1024x768@60Hz with output at 1024x600@60Hz (pass 0)
CRTC 64: trying mode 800x600@60Hz with output at 1024x600@60Hz (pass 0)
CRTC 64: trying mode 800x600@56Hz with output at 1024x600@60Hz (pass 0)
CRTC 64: trying mode 640x480@60Hz with output at 1024x600@60Hz (pass 0)
CRTC 64: trying mode 1024x768@60Hz with output at 1024x600@60Hz (pass 1)
CRTC 64: trying mode 800x600@60Hz with output at 1024x600@60Hz (pass 1)
CRTC 64: trying mode 800x600@56Hz with output at 1024x600@60Hz (pass 1)
CRTC 64: trying mode 640x480@60Hz with output at 1024x600@60Hz (pass 1)

Update

Making progress!

I tried setting nomodeset, i915.modeset=1, and i915.modeset=0, respectively; in Grub.

With nomodeset in Grub, I can now see, and permanently set the 1024x600 resolution I created much earlier without any errors. However, the display is squished, and the bottom bit of the OS is still hidden beneath the screen, & I think it has something to do with aspect ratio. I think it might have something to do with the fact that 1024x600 is the only mode with aspect ratio set to 16:9. How do I change it to 4:3 so it fits?

Though slightly insignificant, it is worth saying that with nomodeset enabled, the OS graphics is a bit slower.


Source: (StackOverflow)

How can I mirror/flip display output?

For strange reasons best not asked, I have a projector plugged into my computer that is pointed at a mirror. So the computer image is displayed on a wall, but it is mirrored.

In Linux(ubuntu) I can go to display preferences and set the external monitor to have a rotated image. Is there a clever way I could have it set to rotate/flip the image?


Source: (StackOverflow)

How to disable laptop's LCD and use external monitor as only output?

My laptop's LCD broke and I removed it. Now I permanently added a monitor via HDMI. How can I set up Ubuntu 12.10 to only use and show the external monitor and disable the LCD?

Right now, I cannot permanently increase the monitors resolution and I guess this problem would disappear if I disabled the LCD display.


Source: (StackOverflow)

Two monitors when only having one in 13.10

I just did a fresh install of Ubuntu 13.10 64bit, and it says that I have 2 monitors, when I actually only have one

enter image description here

I have a Dell XPS 15 with Nvidia graphics card if that helps in anyway


Source: (StackOverflow)

How can I make PDFs appear life-size when displayed at 100%?

When I open a letter size PDF and then zoom to 100%, the page physically displayed on my monitor is smaller than a real letter size sheet of paper.

How can I make "100%" on the computer screen correspond with "100%" in real life?

Details

This message suggests that I should be investigating the system-wide DPI settings for my monitor. xdpyinfo reports:

dimensions:    1024x768 pixels (271x203 millimeters)
resolution:    96x96 dots per inch

My monitor has a native display resolution of 1024x768 pixels and a diagonal display size of 12.07 inches. PX CALC returns the following information:

DPI: 106.05
Dot Pitch: 0.2395mm
Size: 9.66" × 7.24" (24.53cm × 18.39cm)

What I've tried so far

Running xrandr --dpi 106.05 successfully caused my PDF to appear actual size at 100%, but this effect was lost after rebooting.

To make the setting persistent I tried creating the following /etc/X11/xorg.conf:

Section "Monitor"
    Identifier   "ThinkPad X60 LCD"
    DisplaySize  245 183
EndSection

Section "Screen"
    Identifier "Screen0"
    Monitor    "ThinkPad X60 LCD"
EndSection

After re-logging in, /var/log/Xorg.0.log contained

[  1167.824] (**) intel(0): Display dimensions: (245, 183) mm
[  1167.824] (**) intel(0): DPI set to (106, 106)

but xdpyinfo still reported

dimensions:    1024x768 pixels (271x203 millimeters)
resolution:    96x96 dots per inch

and "100%" still appeared too small.


Source: (StackOverflow)

Could not apply the stored configuration for the monitor

I'm using Nvidia 7300 gt and monitor-Acer V173w, on 64 bit Ubuntu 10.04. Compiz and Emerald went well, but at the time of entry into the GUI, I always receive the message :
"Could not apply the stored configuration for the monitor, could not find a suitable configuration of screens"

Why do I always receive it, and what is wrong with the monitor configuration or pci-e is used?

enter image description here

root@dellph1-desktop:/# xrandr
Screen 0: minimum 320 x 240, current 1440 x 900, maximum 1440 x 900
default connected 1440x900+0+0 0mm x 0mm
   1440x900       50.0* 
   1024x768       51.0     58.0     59.0  
   1360x768       52.0     53.0  
   1152x864       54.0     55.0     56.0     57.0  
   960x600        60.0  
   960x540        61.0  
   896x672        62.0  
   840x525        63.0     64.0     65.0     66.0  
   832x624        67.0  
   800x600        68.0     69.0     70.0     71.0     72.0     73.0  
   800x512        74.0  
   720x450        75.0  
   680x384        76.0     77.0  
   640x512        78.0     79.0  
   640x480        80.0     81.0     82.0     83.0  
   576x432        84.0     85.0     86.0     87.0  
   512x384        88.0     89.0     90.0  
   416x312        91.0  
   400x300        92.0     93.0     94.0     95.0  
   320x240        96.0     97.0     98.0  
root@dellph1-desktop:/# 

=== xorg.conf

# nvidia-settings: X configuration file generated by nvidia-settings
# nvidia-settings:  version 260.19.29  (buildmeister@swio-display-x86-rhel47-04.nvidia.com)  Wed Dec  8 12:27:27 PST 2010


Section "ServerLayout"
    Identifier     "Layout0"
    Screen      0  "Screen0" 0 0
    InputDevice    "Keyboard0" "CoreKeyboard"
    InputDevice    "Mouse0" "CorePointer"
    Option         "Xinerama" "0"
EndSection

Section "Files"
EndSection

Section "InputDevice"

    # generated from default
    Identifier     "Mouse0"
    Driver         "mouse"
    Option         "Protocol" "auto"
    Option         "Device" "/dev/psaux"
    Option         "Emulate3Buttons" "no"
    Option         "ZAxisMapping" "4 5"
EndSection

Section "InputDevice"

    # generated from default
    Identifier     "Keyboard0"
    Driver         "kbd"
EndSection

Section "Monitor"

    # HorizSync source: xconfig, VertRefresh source: xconfig
    Identifier     "Monitor0"
    VendorName     "Unknown"
    ModelName      "Acer V173W"
    HorizSync       30.0 - 83.0
    VertRefresh     55.0 - 75.0
    Option         "DPMS"
EndSection

Section "Device"
    Identifier     "Device0"
    Driver         "nvidia"
    VendorName     "NVIDIA Corporation"
    BoardName      "GeForce 7300 GT"
EndSection

Section "Screen"

# Removed Option "metamodes" " 1440x900_60 +0+0; 1280x1024 +0+0"
# Removed Option "metamodes" "1440x900 +0+0"
    Identifier     "Screen0"
    Device         "Device0"
    Monitor        "Monitor0"
    DefaultDepth    24
    Option         "TwinView" "0"
    Option         "TwinViewXineramaInfoOrder" "CRT-0"
    Option         "metamodes" "1440x900_75 +0+0; 1440x900 +0+0"
    SubSection     "Display"
        Depth       24
    EndSubSection
EndSection

Source: (StackOverflow)

How can I get a DisplayLink USB monitor work under Ubuntu?

I have a DisplayLink-based external USB monitor, which has both power and data over USB, and seems to work perfectly under Windows 7, but only can display a text console under Ubuntu 10.10, and that I can only use when I am actually switched to it. So the only Use I can have so far is to have some text-based monitoring or console that I can watch while working on the graphic display.

I know there are some development done for DisplayLink, but I never could get it to actually run properly.

Yes, I tried the detailed setup described in other posts, but they did not work, and instead crashed my X that I had to restore.

Merci :-)


Source: (StackOverflow)

Adding a CPU monitor widget in the top corner like in Gnome2

I wonder if you can add a widget or something like it in the top corner (next to volume and WiFi and things like that) that displays current use of CPU and maybe RAM. I know you could add stuff like that in Gnome2, altough I can't find a feature like that in Unity or Gnome3.


Source: (StackOverflow)