Bug 97037 - Parts of GUI blinking with fullscreen video playback on 2nd screen
Summary: Parts of GUI blinking with fullscreen video playback on 2nd screen
Status: NEW
Alias: None
Product: xorg
Classification: Unclassified
Component: Driver/intel (show other bugs)
Version: git
Hardware: Other All
: high major
Assignee: Chris Wilson
QA Contact: Intel GFX Bugs mailing list
Depends on:
Reported: 2016-07-22 01:02 UTC by Konstantin Svist
Modified: 2016-07-26 22:25 UTC (History)
0 users

See Also:
i915 platform:
i915 features:


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Description Konstantin Svist 2016-07-22 01:02:54 UTC
kernel: 4.6.4-201.fc23.x86_64
git commit: 4eaab17aec8ea66428087065901324f56df9020e

I'm seeing parts of the GUI blink between updated buffer and some semi-corrupted earlier buffer at times. This usually happens on youtube fullscreen video playback (flash/html5? in Firefox), but sometimes seen without fullscreen video (just now happened in Xfce terminal on "git log" command -- was flipping between mostly-blank and screenfull of log for a few seconds).

dual video hardware, bumblebee (usually keep nvidia card disabled):

00:02.0 VGA compatible controller [0300]: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller [8086:0416] (rev 06) (prog-if 00 [VGA controller])
	Subsystem: CLEVO/KAPOK Computer Device [1558:5281]
	Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx+
	Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0
	Interrupt: pin A routed to IRQ 35
	Region 0: Memory at f7400000 (64-bit, non-prefetchable) [size=4M]
	Region 2: Memory at d0000000 (64-bit, prefetchable) [size=256M]
	Region 4: I/O ports at f000 [size=64]
	Expansion ROM at <unassigned> [disabled]
	Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
		Address: fee00018  Data: 0000
	Capabilities: [d0] Power Management version 2
		Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
		Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
	Capabilities: [a4] PCI Advanced Features
		AFCap: TP+ FLR+
		AFCtrl: FLR-
		AFStatus: TP-
	Kernel driver in use: i915
	Kernel modules: i915

01:00.0 VGA compatible controller [0300]: NVIDIA Corporation GK104M [GeForce GTX 870M] [10de:1199] (rev ff) (prog-if ff)
	!!! Unknown header type 7f
	Kernel modules: nouveau, nvidia

Another bug related to fullscreen video (no idea if related/same): at one bootup, horizontal lines showed up as noise at some [random?] locations in video clip during playback. At another bootup, no problem..

Updating to today's commit, might make a difference..
Comment 1 Konstantin Svist 2016-07-26 00:24:24 UTC
update didn't make a difference, still getting blinking between 2 states

Upgraded to Fedora 24, the fullscreen video corruption is gone -- so was unrelated
Comment 2 Konstantin Svist 2016-07-26 22:25:47 UTC
This is affecting a lot more than I thought earlier -- I often get this effect when a window is maximized on one screen (the other screen starts blinking.. whole or part). It's very disruptive to normal work (e.g. full screen browser in one screen & terminal window in another)
If there's any workaround I can apply, please let me know asap!

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