http://bugzilla.opensuse.org/show_bug.cgi?id=929442 Bug ID: 929442 Summary: Display blinks / flickers heavily with latest Wayland and kernel 4.0.0-1 Classification: openSUSE Product: openSUSE Factory Version: 201503* Hardware: Other OS: Other Status: NEW Severity: Major Priority: P5 - None Component: X.Org Assignee: xorg-maintainer-bugs@forge.provo.novell.com Reporter: perttu.muurimaki@iki.fi QA Contact: xorg-maintainer-bugs@forge.provo.novell.com Found By: --- Blocker: --- Created attachment 633083 --> http://bugzilla.opensuse.org/attachment.cgi?id=633083&action=edit Output of journalctl -b | grep -i gdm After Factory update to 20150430 display lower half blinks heavily intermittently (2-5 seconds interval) when wayland is in use. GDM uses wayland and blinks. If I start gnome-wayland blinking continues. If I start normal gnome -session or Icewm -session blinking stops. If I boot with previous kernel (3.19.4.-1) both gdm and gnome-wayland -session work as expected. journalctk -k -b -p err: May 02 11:46:04 ti-5136.site kernel: cdc_ncm 1-1.2:1.6 enp0s26u1u2i6: kevent 12 may have been dropped May 02 11:46:07 ti-5136.site kernel: [drm:ironlake_irq_handler [i915]] *ERROR* CPU pipe A FIFO underrun May 02 11:46:07 ti-5136.site kernel: [drm:intel_set_pch_fifo_underrun_reporting [i915]] *ERROR* uncleared pch fifo underrun on pch transcoder A May 02 11:46:07 ti-5136.site kernel: [drm:cpt_irq_handler [i915]] *ERROR* PCH transcoder A FIFO underrun journalctl -b | grep -i gdm -output is in the attachment I'm happy to provide any additional information if requested. -- You are receiving this mail because: You are on the CC list for the bug.