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Message #170843
[Bug 1554613]
enable_psr=2 still flickers with 4.4.0-16. unable to try latest 4.4.0-17
as X doesn't start with it.
dmesg|grep i915
[ 0.000000] Command line: BOOT_IMAGE=/boot/vmlinuz-4.4.0-16-generic i915.enable_psr=2 i915_bpo.enable_psr=2 root=UUID=432cb01b-c9c7-4cb0-8129-5c0abadbf9f8 ro quiet splash vt.handoff=7
[ 0.000000] Kernel command line: BOOT_IMAGE=/boot/vmlinuz-4.4.0-16-generic i915.enable_psr=2 i915_bpo.enable_psr=2 root=UUID=432cb01b-c9c7-4cb0-8129-5c0abadbf9f8 ro quiet splash vt.handoff=7
[ 1.540320] [drm] Finished loading i915/skl_dmc_ver1.bin (v1.26)
[ 1.566144] [drm] Initialized i915_bpo 1.6.0 20160214 for 0000:00:02.0 on minor 0
[ 1.820091] i915_bpo 0000:00:02.0: fb0: inteldrmfb frame buffer device
[ 3.962877] snd_hda_intel 0000:00:1f.3: bound 0000:00:02.0 (ops i915_audio_component_bind_ops [i915_bpo])
[ 191.798099] [drm:intel_cpu_fifo_underrun_irq_handler [i915_bpo]] *ERROR* CPU pipe A FIFO underrun
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https://bugs.launchpad.net/bugs/1554613
Title:
screen flickering on XPS13 9350
Status in Linux:
Incomplete
Status in linux package in Ubuntu:
Triaged
Bug description:
see LP: #1552304
does not affect 4.4.0-8
affects 4.4.0-9 to 4.4.0-16
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-generic 4.4.0.11.12
ProcVersionSignature: Ubuntu 4.4.0-8.23-generic 4.4.2
Uname: Linux 4.4.0-8-generic x86_64
ApportVersion: 2.20-0ubuntu3
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: tbonfort 1498 F.... pulseaudio
CurrentDesktop: KDE
Date: Tue Mar 8 09:57:12 2016
HibernationDevice: RESUME=UUID=3248e0d7-0dac-4ccc-8982-b5ac5ce6ed5e
InstallationDate: Installed on 2016-01-07 (61 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
Lsusb:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 003: ID 0c45:670c Microdia
Bus 001 Device 002: ID 0a5c:6412 Broadcom Corp.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: Dell Inc. XPS 13 9350
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-8-generic root=UUID=757547b8-d0e4-4eb8-8afd-920b743f99a4 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-4.4.0-8-generic N/A
linux-backports-modules-4.4.0-8-generic N/A
linux-firmware 1.156
SourcePackage: linux
UpgradeStatus: Upgraded to xenial on 2016-02-28 (9 days ago)
dmi.bios.date: 01/08/2016
dmi.bios.vendor: Dell Inc.
dmi.bios.version: 1.2.3
dmi.board.name: 07TYC2
dmi.board.vendor: Dell Inc.
dmi.board.version: A01
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvr1.2.3:bd01/08/2016:svnDellInc.:pnXPS139350:pvr:rvnDellInc.:rn07TYC2:rvrA01:cvnDellInc.:ct9:cvr:
dmi.product.name: XPS 13 9350
dmi.sys.vendor: Dell Inc.
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References