http://bugzilla.opensuse.org/show_bug.cgi?id=981346 http://bugzilla.opensuse.org/show_bug.cgi?id=981346#c2 --- Comment #2 from Christian Boltz --- Created attachment 678112 --> http://bugzilla.opensuse.org/attachment.cgi?id=678112&action=edit hwinfo --all Here's the hwinfo --all output (in case it matters: gathered under kernel 4.5.4). I'll provide the other information as soon as I can reboot. -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=981346 http://bugzilla.opensuse.org/show_bug.cgi?id=981346#c4 --- Comment #4 from Christian Boltz --- Created attachment 678175 --> http://bugzilla.opensuse.org/attachment.cgi?id=678175&action=edit dmesg with drm.debug=0x0e, kernel 4.6 (blinking) -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=981346 http://bugzilla.opensuse.org/show_bug.cgi?id=981346#c6 Takashi Iwai changed: What |Removed |Added ---------------------------------------------------------------------------- Flags| |needinfo?(suse-beta@cboltz. | |de) --- Comment #6 from Takashi Iwai --- Sorry for the late update. I've been off. Now I took a look at both outputs. The obvious difference is that 4.6 starts (re-)enabling FBC and PSR while they were disabled in 4.5. Could you try to boot with i915.enable_fbc=0 i915.enable_psr=0 options? If they work, try to figure out which matters. -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=981346 http://bugzilla.opensuse.org/show_bug.cgi?id=981346#c8 --- Comment #8 from Takashi Iwai --- Could you report it to the upstream Bugzilla, e.g. bugzilla.freedesktop.org? Use category DRI/Intel. This should be tracked by upstream. Thanks. -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=981346 http://bugzilla.opensuse.org/show_bug.cgi?id=981346#c10 Vincent Petry changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |PVince81@yahoo.fr --- Comment #10 from Vincent Petry --- Could be related to the fact that 4.6 has the new intel PSR (Panel Self-Refresh) mode enabled with Kernel 4.6 ? You could try adding enable_psr=0 to the i915 module parameters. Note that I'm not an expert in this. I have flickering/artifacts (like noise) on redraws with Kernel 4.5.4 already and was searching for a similar issue and found yours. I originally thought my issue was due to the PSR, so that's how I know about it. :-) -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=981346 http://bugzilla.opensuse.org/show_bug.cgi?id=981346#c12 --- Comment #12 from Takashi Iwai --- (In reply to Vincent Petry from comment #10)

Could be related to the fact that 4.6 has the new intel PSR (Panel Self-Refresh) mode enabled with Kernel 4.6 ?

Yes, the result in comment 7 obviously shows it. (In reply to Robby Engelmann from comment #11)

it seems to be dependent on the hardware...for skylake 4.6 make life easier: https://bugzilla.novell.com/show_bug.cgi?id=980124

Right, the flickering issue really depends on the hardware. Even the behavior is different per model even with the same chip. For SKL, 4.6 is a better choice that finally addresses many pending issues. PSR has been already enabled for SKL from earlier kernels, but it's been disabled for other old chips until 4.6. Now it's re-enabled with a hope that the recent development covers all corner cases. Alas, it doesn't, hence this has to be tracked by upstream. So, as usual, two steps forward, one step back (or vice versa :) -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=981346 http://bugzilla.opensuse.org/show_bug.cgi?id=981346#c14 --- Comment #14 from Thomas Hatch --- This is also happening to me, also when I plug in an external monitor via display port the laptop display freezes, but I can still see the mouse cursor. This also happened with the 4.6 kernel upgrade in tumbleweed. If I boot with the mini display port inserted then all is well and the flickering does not happen if I unplug or plugin in the display port while booted the the screen starts to flicker and continues flickering even when the display port is re inserted. I have attached my hwinfo and will work on verifying fixes proposed in this issue Thanks! -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=981346 http://bugzilla.opensuse.org/show_bug.cgi?id=981346#c16 --- Comment #16 from Takashi Iwai --- For XPS15, the issue might have been already fixed. Try 4.6.2 kernel in OBS Kernel:stable repo. According to the upstream report, it might be not a perfect fix but stabilizes. 4.7-rc should have the fixes for XPS. If you still see the issue with 4.7-rc kernel (available in OBS Kernel:HEAD repo), please report it to the upstream Bugzilla. -- You are receiving this mail because: You are on the CC list for the bug.

http://bugzilla.opensuse.org/show_bug.cgi?id=981346 http://bugzilla.opensuse.org/show_bug.cgi?id=981346#c18 --- Comment #18 from Thomas Hatch --- ok, kernel-vanilla 4.6.2 DOES solve the problem with my multiple monitors, but the flicker is still there, although not as serious. But kernel-default 4.6.2 Does NOT solve the problem with multiple monitors at all. Fortunately I have a fix for now, so that makes me happy, and since I need to present at opensusecon next week I will keep the kernel hacking to a minimum until the following week :) Thanks! -- You are receiving this mail because: You are on the CC list for the bug.