It is not a nvidia dual head driver problem, same result with intel graphic:
root@desktop:~# lspci | grep VGA 00:02.0 VGA compatible controller: Intel Corporation 2nd Generation Core Processor Family Integrated Graphics Controller (rev 09) root@desktop:~# cat /etc/X11/Xsession.d/45custom_xrandr-settings xrandr --output HDMI1 --auto --output HDMI2 --auto --right-of HDMI1 -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org