Bug#814711: Garbled graphics in Renoise application

[vitaminx]

Just updated these two packages, problem persists:

[UPGRADE] xserver-common:amd64 2:1.18.0-3 -> 2:1.18.1-1
[UPGRADE] xserver-xorg-core:amd64 2:1.18.0-3 -> 2:1.18.1-1