[Bug 980124] New: TW20160514: Heavy flickering after x-server update on skylake architecture
http://bugzilla.novell.com/show_bug.cgi?id=980124 Bug ID: 980124 Summary: TW20160514: Heavy flickering after x-server update on skylake architecture Classification: openSUSE Product: openSUSE Tumbleweed Version: Current Hardware: x86-64 OS: Other Status: NEW Severity: Critical Priority: P5 - None Component: X.Org Assignee: xorg-maintainer-bugs@forge.provo.novell.com Reporter: robby.engelmann@igfs-ev.de QA Contact: xorg-maintainer-bugs@forge.provo.novell.com Found By: --- Blocker: Yes After update and rebooting the system, I gave a heavy flickering of screen elements. Mouse cursor is painting traces and in general kinds of graphics elements show bad repaints with flickering around like crazy. The Desktop is almost unusable now. Thus, I activate the Pontostroy repo and upgraded all packages from there. Now it works again without flickering. Hardware: Tuxedo Infinity Book v2 with i7 Skylake. True for kernel 4.5.3 from TW repo and 4.6 rc7 from kernel:head -- You are receiving this mail because: You are on the CC list for the bug.
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Egbert Eich
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Robby Engelmann
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--- Comment #3 from Robby Engelmann
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--- Comment #4 from Bernhard Wiedemann
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Egbert Eich
it it this SR?: https://build.opensuse.org/request/show/396011
Perhaps you may consider to enroll it through the TW update channel and pass Stagings etc. It is hardly possible to make it worse than now for a normal intel user on TW.
Unfortunately, you've missed to include - the list of packages that have changed between your last good and your first bad installation, - the Xserver log file from before and after you've updated from the user repo. in your original report. This way, I was not able to draw the correct conclusions. I've investigated this myself now: The problem occurred due to a switch from xf86-video-intel to the modesetting driver for anything g9+ to address that xf86-video-intel doesn't really have good support for this hardware: for other reasons we've disabled the hardware cursor on xf86-video-modesetting altogether. I've fixed this and submitted it to Factory now. The issue can be work-arounded by a simple edit to /etc/X11/xorg.conf.d/50-device.conf. It is not serious enough to justify an emergency updated for Tumbleweed. Tumbleweed is a rolling release, which means that things may break at times - however it will won't be too long until a fix shows up. the fix will show up there. Closing this issue now. -- You are receiving this mail because: You are on the CC list for the bug.
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--- Comment #6 from Robby Engelmann
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--- Comment #7 from Egbert Eich
Sorry for the missing information, it seemed clear to me, that the transition from TW20160512 to TW20160514 was the bad guy here as there was in update in the x-server package.
Unfortunately, even this would not have helped much as there is no list of package that got updated between TW releases - if there is, I'm not aware of it :( Such a list would most likely contain more packages than which got updated on your system as there may have been updates to packages you don't have installed. Therefore, the best source for for finding the packages which have changed is /var/log/zypp/history.
Now, I added the X11 factory repo, where fixed intel and x-server packages are in. It works fine here again. I will remove that repo again, when both SR's hit TW. Thanks for your help.
Ok, great! Good to know! Thanks for testing :) -- You are receiving this mail because: You are on the CC list for the bug.
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--- Comment #8 from Robby Engelmann
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--- Comment #9 from Bernhard Wiedemann
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--- Comment #10 from Egbert Eich
Oh, I have to mention that I am using kernel 4.6 rc7 from kernel:HEAD. With kernel 4.5.3 I got system hangs upon plugin a second monitor to the HDMI port. With 4.6rc7 it was solved for me.
Ok, great! If you bisect this and find the patch that fixes this, I will backport it to 4.5.3. I can't - I don't have Skylake. -- You are receiving this mail because: You are on the CC list for the bug.
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--- Comment #11 from Robby Engelmann
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Robby Engelmann
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Jiri Slaby
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Egbert Eich
@Egbert Eich: Whenever you have something that needs to be tested on Skylake you are free to ask me. So I can test packages prior to their release.
Thanks! (In reply to Jiri Slaby from comment #16)
Oh yeah, the flickering was fixed for me by update to 4.6 too. Cool!
I am on Ivy Bridge using modesetting_drv though (so maybe unrelated to this report).
On IvyBridge I'd still recommend xf86-video-intel. There is a problem with sw cursor at the moment. Most KMS drivers provide a working HW cursor today, though. -- You are receiving this mail because: You are on the CC list for the bug.
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--- Comment #18 from Jiri Slaby
On IvyBridge I'd still recommend xf86-video-intel. There is a problem with sw cursor at the moment. Most KMS drivers provide a working HW cursor today, though.
I am running patched Xorg by: https://patchwork.freedesktop.org/patch/75985/ I am using modesetting_drv for a month now and saw no problems with Xrender compositing. 4.6 fixed also OpenGL compositing. So I will stick with modesetting until is breaks if at all :). -- You are receiving this mail because: You are on the CC list for the bug.
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--- Comment #21 from Egbert Eich
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