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I'm running xubuntu 16.04.1. Today I updated an rebooted. Now I'm stuck in 1920 x 1080. I'm older and like a lower resolution. Also I can't seem to change the brightness now.

What do I do?

xrandr: Failed to get size of gamma for output default
Screen 0: minimum 1920 x 1080, current 1920 x 1080, maximum 1920 x 1080
default connected 1920x1080+0+0 0mm x 0mm
1920x1080      0.00*

Before the update I had other resolutions in arandr.

 $ lspci | grep -i vga
 00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller (rev 06)
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1 Answers1

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This looks like a driver error. Make sure you have the correct Intel drivers.

Check the system logs.

Go here: https://01.org/linuxgraphics/downloads and install the update tool.

You might want to see this: https://unix.stackexchange.com/questions/209157/xrandr-failed-to-get-size-of-gamma-for-output-default-for-guest-centos-6-6-h

You might not need to change the resolution- try the following:

Change the system UI scaling and font size from "System Settings>Displays>Scaling for Menu and Title Bars".

If you are using chrome, you can change the UI scaling by going to the chrome.desktop file (usually located in /usr/share/applications) and editing this line:

Exec=/usr/bin/google-chrome-stable --force-device-scale-factor=1 %U

Change "--force-device-scale-factor=" to a number higher than 1 for large UI.

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