Linux Mint resolution 1024x768

Hi feuse8,

Thank you for your post.

TeamViewer displays an exact copy of the graphics card's output. 

When working with headless devices, video card sometimes only outputs a minimal resolution. That's the reason why TeamViewer is showing only 1024x768. 

You may place a monitor and restart your device and notice that TeamViewer will get different resolutions. 

You may also check what video resolutions are available without the monitor plugged in (headless) with the command Xrandr for example: 

[user@localhost /]$ xrandr
Screen 0: minimum 1 x 1, current 1577 x 1047, maximum 16384 x 16384
Virtual1 connected primary 1577x1047+0+0 (normal left inverted right x axis y axis) 0mm x 0mm
   1577x1047     60.00*+
   2560x1600     59.99  
   1920x1440     60.00  
   1856x1392     60.00  
   1792x1344     60.00  
   1920x1200     59.88  
   1600x1200     60.00  
   1680x1050     59.95  
   1400x1050     59.98  
   1280x1024     60.02  
   1440x900      59.89  
   1280x960      60.00  
   1360x768      60.02  
   1280x800      59.81  
   1152x864      75.00  
   1280x768      59.87  
   1024x768      60.00  
   800x600       60.32  
   640x480       59.94  
Virtual2 disconnected (normal left inverted right x axis y axis)
Virtual3 disconnected (normal left inverted right x axis y axis)
Virtual4 disconnected (normal left inverted right x axis y axis)
Virtual5 disconnected (normal left inverted right x axis y axis)
Virtual6 disconnected (normal left inverted right x axis y axis)
Virtual7 disconnected (normal left inverted right x axis y axis)
Virtual8 disconnected (normal left inverted right x axis y axis)

If you find a resolution that works for you, use the following command  

xrandr --output Virtual1 --mode 1280x1024

Please note these parameters are based on the values provided in the example. Xrandr is a temporary setting. Once you restart defaults will be loaded.

Hope this solution work for you,

Best regards,

Christian