screen always flickers after videos kind of like refreshing

[julian owens]

just when viewing video play back

ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: xorg 1:7.7+19ubuntu7.1
ProcVersionSignature: Ubuntu 4.15.0-36.39-generic 4.15.18
Uname: Linux 4.15.0-36-generic x86_64
.tmp.unity_support_test.0:

ApportVersion: 2.20.9-0ubuntu7.4
Architecture: amd64
CompizPlugins: No value set for `/apps/compiz-1/general/screen0/options/active_plugins'
CompositorRunning: None
Date: Wed Oct 10 00:19:10 2018
DistUpgraded: 2018-07-04 14:55:19,567 DEBUG icon theme changed, re-reading
DistroCodename: bionic
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes, if not too technical
GraphicsCard:
 Intel Corporation Atom Processor Z36xxx/Z37xxx Series Graphics & Display [8086:0f31] (rev 0e) (prog-if 00 [VGA controller])
   Subsystem: Dell Atom Processor Z36xxx/Z37xxx Series Graphics & Display [1028:0667]
InstallationDate: Installed on 2016-05-31 (861 days ago)
InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Release amd64 (20160420.1)
Lsusb:
 Bus 001 Device 005: ID 0bda:0129 Realtek Semiconductor Corp. RTS5129 Card Reader Controller
 Bus 001 Device 004: ID 0c45:64ad Microdia
 Bus 001 Device 003: ID 046d:c52b Logitech, Inc. Unifying Receiver
 Bus 001 Device 002: ID 8087:07e6 Intel Corp.
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Dell Inc. Inspiron 3531
ProcEnviron:
 PATH=(custom, no user)
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.15.0-36-generic root=UUID=f90fb283-e284-4301-b2a6-d28e03a8acf6 ro quiet splash vt.handoff=1
SourcePackage: xorg
UpgradeStatus: Upgraded to bionic on 2018-07-04 (97 days ago)
dmi.bios.date: 05/06/2014
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A01
dmi.board.name: 00FTTX
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.version: A01
dmi.modalias: dmi:bvnDellInc.:bvrA01:bd05/06/2014:svnDellInc.:pnInspiron3531:pvrA01:rvnDellInc.:rn00FTTX:rvrA00:cvnDellInc.:ct8:cvrA01:
dmi.product.family: 00
dmi.product.name: Inspiron 3531
dmi.product.version: A01
dmi.sys.vendor: Dell Inc.
version.compiz: compiz 1:0.9.13.1+18.04.20180302-0ubuntu1
version.libdrm2: libdrm2 2.4.91-2
version.libgl1-mesa-dri: libgl1-mesa-dri 18.0.5-0ubuntu0~18.04.1
version.libgl1-mesa-glx: libgl1-mesa-glx 18.0.5-0ubuntu0~18.04.1
version.xserver-xorg-core: xserver-xorg-core 2:1.19.6-1ubuntu4
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev 1:2.10.5-1ubuntu1
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:18.0.1-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel 2:2.99.917+git20171229-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-2
xserver.bootTime: Wed Jul 4 12:04:14 2018
xserver.configfile: default
xserver.errors:

xserver.logfile: /var/log/Xorg.0.log
xserver.outputs:
 product id 21569
 vendor SDC
xserver.version: 2:1.18.4-0ubuntu0.7

[Daniel van Vugt (vanvugt)]

1. Do you mean fullscreen video playback only, or does the flicker happen with video in a window too?

2. Which apps are affected?

[Daniel van Vugt (vanvugt)]

3. Does the problem only occur when using multiple monitors? Does it go away when you unplug all external monitors and just use the built-in display?

[Daniel van Vugt (vanvugt)]

I am reminded of https://bugs.freedesktop.org/show_bug.cgi?id=98876, but that is about the modesetting driver which you are not using.

You seem to be using the Intel driver and your log says:

  [ 41.117] (==) intel(0): TearFree disabled

so please try doing https://wiki.archlinux.org/index.php/intel_graphics#Tear-free_video

[Paul White (paulw2u)]

This bug did not expire due to the bug watch and has been incomplete for over four years now awaiting a response from the reporter. Closing as 'Invalid'.