Public bug reported:
After updating from 14.04 to 16.04 xenial, I am experiencing a screen
flickering issue. The screen periodically completely blanks out. I tried the
following kernels:
4.10.0 (daily from 1/30/2017)
4.4.0-59 (ships with 16.04)
4.1.21 (recommended from another random thread)
All with the same problem. Possibly related is this error from dmesg:
[ 5.138438] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR*
failed to enable link training
[ 5.141129] [drm:intel_dp_start_link_train [i915]] *ERROR* failed to start
channel equalization
[ 5.343585] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU
pipe B FIFO underrun
I also tried the following kernel options:
i915_enable_fbc=0
i915_enable_rc6=0
I installed and ran the Intel graphics update tool as well. The issue
occurs on a X1 Carbon (3rd gen) laptop and only with an external monitor
plugged into mDisplayPort at the maximum resolution (4k). If the
resolution is lowered from the max, the flickering goes away.
Any help would be greatly appreciated.
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-59-generic 4.4.0-59.80
ProcVersionSignature: Ubuntu 4.4.0-59.80-generic 4.4.35
Uname: Linux 4.4.0-59-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.5
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC2: rvanguri 1836 F.... pulseaudio
/dev/snd/controlC1: rvanguri 1836 F.... pulseaudio
/dev/snd/controlC0: rvanguri 1836 F.... pulseaudio
CurrentDesktop: XFCE
Date: Mon Jan 30 18:01:51 2017
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=0a55c618-23a5-4af9-9a32-cf23efc5466a
InstallationDate: Installed on 2017-01-21 (9 days ago)
InstallationMedia: Xubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64 (20160719)
MachineType: LENOVO 20BSCT01WW
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-59-generic.efi.signed
root=/dev/mapper/xubuntu--vg-root ro quiet splash
RelatedPackageVersions:
linux-restricted-modules-4.4.0-59-generic N/A
linux-backports-modules-4.4.0-59-generic N/A
linux-firmware 1.157.6
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 02/04/2016
dmi.bios.vendor: LENOVO
dmi.bios.version: N14ET34W (1.12 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20BSCT01WW
dmi.board.vendor: LENOVO
dmi.board.version: 0B98417 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias:
dmi:bvnLENOVO:bvrN14ET34W(1.12):bd02/04/2016:svnLENOVO:pn20BSCT01WW:pvrThinkPadX1Carbon3rd:rvnLENOVO:rn20BSCT01WW:rvr0B98417WIN:cvnLENOVO:ct10:cvrNone:
dmi.product.name: 20BSCT01WW
dmi.product.version: ThinkPad X1 Carbon 3rd
dmi.sys.vendor: LENOVO
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug xenial
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https://bugs.launchpad.net/bugs/1660485
Title:
Screen flicker with Intel i915 driver
Status in linux package in Ubuntu:
New
Bug description:
After updating from 14.04 to 16.04 xenial, I am experiencing a screen
flickering issue. The screen periodically completely blanks out. I tried the
following kernels:
4.10.0 (daily from 1/30/2017)
4.4.0-59 (ships with 16.04)
4.1.21 (recommended from another random thread)
All with the same problem. Possibly related is this error from dmesg:
[ 5.138438] [drm:intel_dp_link_training_clock_recovery [i915]] *ERROR*
failed to enable link training
[ 5.141129] [drm:intel_dp_start_link_train [i915]] *ERROR* failed to start
channel equalization
[ 5.343585] [drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU
pipe B FIFO underrun
I also tried the following kernel options:
i915_enable_fbc=0
i915_enable_rc6=0
I installed and ran the Intel graphics update tool as well. The issue
occurs on a X1 Carbon (3rd gen) laptop and only with an external
monitor plugged into mDisplayPort at the maximum resolution (4k). If
the resolution is lowered from the max, the flickering goes away.
Any help would be greatly appreciated.
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-59-generic 4.4.0-59.80
ProcVersionSignature: Ubuntu 4.4.0-59.80-generic 4.4.35
Uname: Linux 4.4.0-59-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.5
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC2: rvanguri 1836 F.... pulseaudio
/dev/snd/controlC1: rvanguri 1836 F.... pulseaudio
/dev/snd/controlC0: rvanguri 1836 F.... pulseaudio
CurrentDesktop: XFCE
Date: Mon Jan 30 18:01:51 2017
EcryptfsInUse: Yes
HibernationDevice: RESUME=UUID=0a55c618-23a5-4af9-9a32-cf23efc5466a
InstallationDate: Installed on 2017-01-21 (9 days ago)
InstallationMedia: Xubuntu 16.04.1 LTS "Xenial Xerus" - Release amd64
(20160719)
MachineType: LENOVO 20BSCT01WW
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-4.4.0-59-generic.efi.signed
root=/dev/mapper/xubuntu--vg-root ro quiet splash
RelatedPackageVersions:
linux-restricted-modules-4.4.0-59-generic N/A
linux-backports-modules-4.4.0-59-generic N/A
linux-firmware 1.157.6
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 02/04/2016
dmi.bios.vendor: LENOVO
dmi.bios.version: N14ET34W (1.12 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20BSCT01WW
dmi.board.vendor: LENOVO
dmi.board.version: 0B98417 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias:
dmi:bvnLENOVO:bvrN14ET34W(1.12):bd02/04/2016:svnLENOVO:pn20BSCT01WW:pvrThinkPadX1Carbon3rd:rvnLENOVO:rn20BSCT01WW:rvr0B98417WIN:cvnLENOVO:ct10:cvrNone:
dmi.product.name: 20BSCT01WW
dmi.product.version: ThinkPad X1 Carbon 3rd
dmi.sys.vendor: LENOVO
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