Host configuration
- System: Ubuntu 18.04
- Graphics: Intel integrated graphics
Enable remote control
Note that if the teamviewer has a login account, through the account link, it does not matter whether there is the remote desktop control that comes with Ubuntu.
If teamviewer enters a randomly generated password or clicks "Receive / Confirm" on the host to allow the remote desktop to control the link, then of course there must be Ubuntu's remote desktop control service running, first through the VNC-Viewer link control; Get the password or click to receive, then teamviewer can link.
Why use Teamviewer instead of the built-in remote desktop control software? – Because Teamviewer is relatively fast (data will be compressed when transferring desktop images and then transferred on the network).
Even if they are all on the LAN, Teamviewer is faster.
Install software and support
Install the software that makes Ubuntu use a virtual display:
$ sudo apt-get install xserver-xorg-core-hwe-18.04 $ sudo apt-get install xserver-xorg-video-dummy-hwe-18.04 --fix-missingModify / create configuration file (the virtual display will be used by default):
$ sudo vim /usr/share/X11/xorg.conf.d/xorg.conf Section "Device" Identifier "Configured Video Device" Driver "dummy" EndSection Section "Monitor" Identifier "Configured Monitor" HorizSync 31.5-48.5 VertRefresh 50-70 EndSection Section "Screen" Identifier "Default Screen" Monitor "Configured Monitor" Device "Configured Video Device" DefaultDepth 24 SubSection "Display" Depth 24 Modes "1920x1080" EndSubSection EndSection ~ ~ ~ :wq $Note: Although the configuration says "1920x1080", it actually supports "1360x768" at most
How to support 1920x1080 is temporarily unclear; I think 1360x768 is enough, so I haven't studied it deeply.Support 1920x1080, see Reference below 3. 。
Restart to take effect
other
Related commands:
xrandr: After using the virtual display, use the xrandr command to view the display information as follows (this display result is slightly different from the original physical display):
xrandr -q xrandr: Failed to get size of gamma for output default Screen 0: minimum 320 x 240, current 1360 x 768, maximum 1360 x 768 default connected primary 1360x768+0+0 0mm x 0mm 1360x768 60.00* 1280x720 60.00 1024x768 60.00 1024x576 60.00 960x540 60.00 800x600 60.00 56.00 640x480 60.00 684x384 60.00 680x384 60.00 640x360 60.00 512x384 60.00 512x288 60.00 480x270 60.00 400x300 60.00 56.00 320x240 60.00
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Xvfb: X Virtual Framebuffer
may consider using Xvfb to create virtual displays in automated testing.
The specific usage is beyond the scope of this article.
Precautions
After restarting, even if the monitor is connected, no signal will be output to the monitor!
However, the VNC-Viewer can be linked to the Ubuntu host for "remote" desktop control, just as before installing the software and modifying the configuration file according to this article.
Reference
