Samsung SyncMaster U70

bab1ch · 07-20-2017, 08:02 AM

So the problem is that udl module is loaded to soon during boot and display is not recognized.
Solution is to blacklist the module:

Code:

sudo /etc/modprobe.d/blacklist.conf

Add following lines:

Quote:

blacklist udlfb
blacklist udl

Than after you login manually load udl module:

Code:

sudo modprobe udl

After that

Code:

xrandr --listproviders

returns 2 providers:

Quote:

Providers: number : 2
Provider 0: id: 0x54 cap: 0xf, Source Output, Sink Output, Source Offload, Sink Offload crtcs: 2 outputs: 3 associated providers: 1 name:ATI RV730 PRO [Radeon HD 4650] @ pci:0000:01:00.0
Provider 1: id: 0x4f2 cap: 0x2, Sink Output crtcs: 1 outputs: 1 associated providers: 1 name:modesetting

Now you can use arandr or xrandr to configure your displays.