Problem solved on my hardware with:
mesa (18.0.0~rc5-1ubuntu1) bionic .... [ Daniel van Vugt ] * Add disable-intel-ccs-compression.patch to avoid screen corruption when logging into Xorg sessions (LP: #1753776) ....
Problem solved on my hardware with:
mesa (18.0.0~ rc5-1ubuntu1) bionic intel-ccs- compression. patch to avoid screen corruption
....
[ Daniel van Vugt ]
* Add disable-
when logging into Xorg sessions (LP: #1753776)
....