Same Problem on Thinkpad L560 + Docking Station + External Monitor + 18.04 LTS amd64: When docked both screens go blank when Gnome Session tries to start. Nothing works but REISUB.
From the boot log:
Jan 30 12:24:47 remscheid kernel: BUG: unable to handle kernel NULL pointer dereference at 0000000000000245
Jan 30 12:24:47 remscheid kernel: IP: intel_ddi_post_disable+0x54/0x170 [i915]
Kernel was: 4.15.0-44-generic
Effect not reproducible with kernel: 4.15.0-43-generic
Same Problem on Thinkpad L560 + Docking Station + External Monitor + 18.04 LTS amd64: When docked both screens go blank when Gnome Session tries to start. Nothing works but REISUB.
From the boot log:
Jan 30 12:24:47 remscheid kernel: BUG: unable to handle kernel NULL pointer dereference at 0000000000000245 post_disable+ 0x54/0x170 [i915]
Jan 30 12:24:47 remscheid kernel: IP: intel_ddi_
Kernel was: 4.15.0-44-generic
Effect not reproducible with kernel: 4.15.0-43-generic