Comment 26 for bug 1871721

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Oscar (oz0no) wrote : Re: Second Monitor on HDMI blank screen with Nvidia & Ubuntu 20.04? (ASUS Laptop)

Same behaviour happens to me. The second monitor works as expected on Ubuntu 18.04.1 (upgraded up to 18.04.4 works fine) but does not works with a fresh install of 18.04.4

Asus Laptop
Intel Core i7-6700HQ
nvidia GeForce GTX 960M

With a fresh install of Ubuntu 20.04 the second monitor keeps black and indicates "no source detected" however this is the output of xrandr command:

Screen 0: minimum 8 x 8, current 1920 x 2160, maximum 16384 x 16384
eDP-1-1 connected primary 1920x1080+0+1080 (normal left inverted right x axis y axis) 344mm x 193mm
   1920x1080 60.05*+ 60.01 59.97 59.96 59.93
   ...
   ...
DP-1-1 disconnected (normal left inverted right x axis y axis)
HDMI-1-1 disconnected (normal left inverted right x axis y axis)
HDMI-1-2 connected 1920x1080+0+0 (normal left inverted right x axis y axis) 477mm x 268mm <--
   1920x1080 60.00*+
   ...
   ...
DP-1-2 disconnected (normal left inverted right x axis y axis)
HDMI-1-3 disconnected (normal left inverted right x axis y axis)

Could anybody help with this issue?

Thanks in advance.