Public bug reported:
The computer running Ubuntu is being used as HTPC connected via HDMI to a
screen projector.
After upgrading to 16.04, it's unusable under production kernel.
The screen starts flickering after a while (it's easily triggered by fast
scrolling e.g. terminal's window). The whole screen get's filled with a noise,
and then the projector gets disconnected for a while.
The computer runs fine on an older kernel (4.2.0-35), it's still broken
on the mainline kernel 4.7.0.
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-31-generic 4.4.0-31.50
ProcVersionSignature: Ubuntu 4.4.0-31.50-generic 4.4.13
Uname: Linux 4.4.0-31-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: pwiecz 3977 F.... pulseaudio
/dev/snd/controlC1: pwiecz 3977 F.... pulseaudio
CurrentDesktop: Unity
Date: Tue Aug 2 19:40:29 2016
InstallationDate: Installed on 2014-02-02 (912 days ago)
InstallationMedia: Ubuntu 13.10 "Saucy Salamander" - Release amd64 (20131016.1)
MachineType: Gigabyte Technology Co., Ltd. H87N-WIFI
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-31-generic
root=UUID=98e2c9a3-1a1a-4d21-b370-79d0cde7b5f2 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-4.4.0-31-generic N/A
linux-backports-modules-4.4.0-31-generic N/A
linux-firmware 1.157.2
SourcePackage: linux
UpgradeStatus: Upgraded to xenial on 2016-04-27 (97 days ago)
dmi.bios.date: 08/18/2015
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: F9
dmi.board.asset.tag: To be filled by O.E.M.
dmi.board.name: H87N-WIFI
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.asset.tag: To Be Filled By O.E.M.
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.chassis.version: To Be Filled By O.E.M.
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvrF9:bd08/18/2015:svnGigabyteTechnologyCo.,Ltd.:pnH87N-WIFI:pvrTobefilledbyO.E.M.:rvnGigabyteTechnologyCo.,Ltd.:rnH87N-WIFI:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvrToBeFilledByO.E.M.:
dmi.product.name: H87N-WIFI
dmi.product.version: To be filled by O.E.M.
dmi.sys.vendor: Gigabyte Technology Co., Ltd.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug xenial
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https://bugs.launchpad.net/bugs/1609074
Title:
Screen flicker on 16.04
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