I installed Debian 9 and my AMD gateway with 2 HDMI outputs.
The gnome 3.22.2 desktop only showed up on 1 monitor.
Followed instruction on: https://wiki.debian.org/AtiHowTo
to install the video drivers. Then used a
randr command from the terminal to make the 2nd monitor available in the gnome-control-panel.
My extended desktop works perfectly!
Video Contgrollers: (from $ lspci) 01:05.0 [AMD/ATI] RS780 [Radeon HD 3200] 02:00.0 [AMD/ATI] Redwood PRO [Radeon HD 5550/5570/5630/6510/6610/7570]
To activate the 2nd monitor:
# xrandr --setprovideroutputsource 1 0
Then the 2nd monitor shows up in the gnome-control-panel so I can setup the extended desktop.
Problem: Every time I boot-up Debian,the desktop is only on the 1st monitor using the RS780 card.
- How do I configure the system to automatically show an extended desktop on both monitors?
- I don't have a
/etc/X11/xorg.conf; do I need one?