Ubuntu – How to 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 the TV for all other inputs, but not HDMI for some reason, I guess it's just a limitation of the tv itself.

Ubuntu detects my TV and only offers one display resolution, 1280×720 (16:9)

Is there a way to scale down the display so that the edges won't get cut off?

Best Answer

See Nemo's answer https://askubuntu.com/a/413132/511681 It fixed that problem on my TV as hdmi monitor. The same problem happens with all the various recent Ubuntu's I have tried with this TV. I don't want to use a proprietary driver. Nemo says:

xrandr --output HDMI-0 --set underscan on


xrandr --output HDMI-0 --set underscan auto

Now with underscan I have a black border 8-9mm but I can now see the task bar and the edges of maximised windows.

My equipment is:

  • Mobility Radeon HD5430 using the recommended driver xserver-xorg-video-ati (open source) version 1:7.3.0-ubuntu3.1 X.Org X server - AMD/ATI display driver wrapper.
  • Monitor is a TV: Mars-Tech Corporation 32" hdmi-0 Resolution 1280 x 720 Refresh rate 60Hz.
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