DisplayLink Forum - Multiple Monitor Support

Does anyone know a good way to tie a xrandr Provider ID to a USB bus ID or something else that is adapter specific? Maybe there is something I can do with the id for a provider?

I have 2 displaylink adapters (same make, same model) connected to a Mint 17.2 laptop using the mainline 4.5.2 kernel & the latest driver -- both of the adapters appear in xrandr, but the provider ID is inconsistent across reboots.

Sometimes an adapter will appear as provider #1, sometimes it will switch with the other adapter as provider #2

The script I'm using to switch on the displays looks like:

Code:

LEFTMONITOR=DVI-2-1

RIGHTMONITOR=DVI-1-0

LAPTOPMONITOR=DP-0



RESOLUTION_FLAG="--mode 1024x768"



MONITOR_1_POS=0x0

MONITOR_2_POS=1024x0



xrandr --setprovideroutputsource 1 0

# Running the first line creates provider #2 in the list & I'm not sure why, so the ID jumps by 1 for adapter #2

xrandr --setprovideroutputsource 3 0

xrandr --auto





xrandr --output $LEFTMONITOR $RESOLUTION_FLAG --pos $MONITOR_1_POS --rotate normal 

xrandr --output $CENTERMONITOR $RESOLUTION_FLAG --pos $MONITOR_2_POS --rotate normal 

xrandr --output $LAPTOPMONITOR --off

Before running the script, xrandr --listproviders looks like:

Code:

~/laptop-stuff/scripts $ xrandr --listproviders 

Providers: number : 3

Provider 0: id: 0x1b9 cap: 0x1, Source Output crtcs: 4 outputs: 6 associated providers: 0 name:NVIDIA-0

Provider 1: id: 0x26b cap: 0x2, Sink Output crtcs: 1 outputs: 1 associated providers: 0 name:modesetting

Provider 2: id: 0x249 cap: 0x2, Sink Output crtcs: 1 outputs: 1 associated providers: 0 name:modesetting