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This article will explain in detail how to connect the projector in linux. The content of the article is of high quality, so the editor will share it for you as a reference. I hope you will have a certain understanding of the relevant knowledge after reading this article.

Option 1:

In general, you need the notebook currently using the same resolution as the projector in order to display the laptop's X on the projector. Then, you can run this command first:

$xrandr

For example, on my computer, the results are as follows:

[2007-04-11 09:03:20] zhangsen@zhangsen-desktop:/opt/src/emacs

$xrandr

SZ: Pixels Physical Refresh

* 0 1280 x 1024 (433mm x 346mm) * 50 54

1 1024 x 768 (346mm x 260mm) 51 60 61

2 800 x 600 (270mm x 203mm) 52 65 66 67 68

3 640 x 480 (216mm x 162mm) 53 73 74 75

4 1280 x 960 (433mm x 325mm) 55

5 1280 x 800 (433mm x 270mm) 56

6 1280 x 768 (433mm x 260mm) 57

7 1152 x 864 (390mm x 292mm) 58

8 1152 x 768 (390mm x 260mm) 59

9 960 x 600 (325mm x 203mm) 62

10 840 x 525 (284mm x 177mm) 63

11 832 x 624 (281mm x 211mm) 64

12 800 x 512 (270mm x 173mm) 69

13 720 x 450 (243mm x 152mm) 70

14 640 x 512 (216mm x 173mm) 71 72

15 640 x 400 (216mm x 135mm) 76

16 640 x 384 (216mm x 130mm) 77

17 576 x 432 (195mm x 146mm) 78

18 576 x 384 (195mm x 130mm) 79

19 512 x 384 (173mm x 130mm) 80 81 82

20 416 x 312 (140mm x 105mm) 83

21 400 x 300 (135mm x 101mm) 84 85 86 87

22 320 x 240 (108mm x 81mm) 88 89 90

Current rotation-normal

Current reflection-none

Rotations possible-normal

Reflections possible-none

Article 0 is marked with a *, indicating that this is the resolution currently used by laptops. If the resolution of the projector is 1024x768, then you need to change the resolution of the laptop. Because in the above result, 1024x768 corresponds to item 1, run this command to change the resolution:

$xrandr-s 1

This switches the resolution. Wait for the search of the projector.

First connect the VGA and execute the command (VGA for the monitor, LVDS for the laptop LCD screen):

$xrandr-output VGA-auto

The current desktop will be copied to VGA. If you execute xrandr, you will see that you have VGA-0.

Disconnect the VGA-0:

$xrandr-output VGA-0-auto

Extend the desktop in accordance with the current configuration:

$xrandr-output VGA-0-auto-left-of LVDS

This is to modify the xorg.conf, first execute xrandr without parameters to list the current display device and the mode supported by each device. Screen represents the total display area, VGA represents the monitor, and LVDS represents the notebook LCD screen.

Screen 0: minimum 320 x 200, current 1280 x 768, maximum 1280 x 1280

VGA connected (normal left inverted right x axis y axis)

1280x1024 75.0 + 69.8 59.9

1024x768 75.1 70.1 60.0

800x600 72.2 75.0 60.3

640x480 75.0 72.8 65.4 60.0

720x400 70.1

LVDS connected 1024x768+0+0 (normal left inverted right x axis y axis) 246mm x 184mm

1024x768 50.09 + 60.040.0

800x600 60.3

640x480 60.0 59.9

Modify:

Gksudo gedit / etc/X11/xorg.conf

After modification, it is as follows:

Section "Screen"

Identifier "Default Screen"

Monitor "Configured Monitor"

Device "Configured Video Device"

SubSection "Display"

Virtual 2304 1024 # expand double screen, 2304mm 1280mm 1024pm 1024max (1024768)

EndSubSection

EndSection

Note: the xorg.conf in Ubuntu 8.04 is already very compact. Subsection "Display" may have to be added by yourself. Don't forget EndSubSection.

The xrandr command line can easily switch between two screens. The common ways are as follows, and others can be explored by yourself:

Xrandr-output VGA-same-as LVDS-auto

Turn on the external monitor (highest resolution) and display the same content as the notebook LCD screen (clone)

Xrandr-output VGA-same-as LVDS-mode 1024x768

Turn on the external monitor (resolution is 1024x768) and display the same content as the notebook LCD screen (clone)

Xrandr-output VGA-right-of LVDS-auto

Turn on the external monitor (highest resolution) and set it to the right expansion screen

Xrandr-output VGA-off

Turn off the external monitor

Xrandr-output VGA-auto-output LVDS-off

Turn on the external monitor and turn off the notebook LCD screen (work with the external monitor only)

Xrandr-output VGA-off-output LVDS-auto

Turn off the external monitor and turn on the notebook LCD screen (laptop LCD screen only)

Option 2:

Open xorg.conf

Gksudo gedit / etc/X11/xorg.conf

Modify Section "Device" as follows:

Section "Device"

Identifier "Configured Video Device"

Option "TwinView"True" # turns on dual display support

Option "TwinViewOrientation"Clone" # replication mode, Relative is extended mode

Option "UseEdidFreqs"True" # Open refresh rate setting

Option "Metamodes"1024x768_60, 1024x768; 1024x768_60800x600" # refresh frequency mode, indicating the resolution of the two devices, the first before the comma is the local display device, the second after the comma is the external device, the semicolon separates multiple modes, and two or more programs can be set.

EndSection

Save. Connect the projector, restart Xwindows (Ctrl+Alt+Backspace) and OK.

On how to connect the projector in linux to share here, I hope the above content can be of some help to you, can learn more knowledge. If you think the article is good, you can share it for more people to see.

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