Ubuntu
xserver-xorg-video-ati package

  1. Bug #1509997
  2. Comment #23

Comment 23 for bug 1509997

Revision history for this message
Adrian (adrianf0) wrote :

Christopher:
I have tried Ubuntu 17.10 with the upstream kernels (4.15.2 and 4.16-rc1) and both behave similarly:

no kernel parameters: screens chained by MST DisplayPort mirror picture, visible as a single screen

radeon.mst=1 : screens chained by MST DisplayPort work properly (seen as separate screens), build screen doesn't work

radeon.mst=1,radeon.dpm=1 : subsequentely flickering screens, not usable