*** This bug is a duplicate of bug 1550779 ***
https://bugs.launchpad.net/bugs/1550779
Thank you for taking the time to report this bug and helping to make
Ubuntu better. This particular bug has already been reported and is a
duplicate of bug 1550779, so it is being marked as such. Please look at
the other bug report to see if there is any missing information that you
can provide, or to see if there is a workaround for the bug.
Additionally, any further discussion regarding the bug should occur in
the other report. Feel free to continue to report any other bugs you may
find.
** Package changed: xorg (Ubuntu) => linux (Ubuntu)
** This bug has been marked a duplicate of bug 1550779
[drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A FIFO
underrun
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https://bugs.launchpad.net/bugs/1874821
Title:
[drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A
FIFO underrun
Status in linux package in Ubuntu:
New
Bug description:
[drm:intel_cpu_fifo_underrun_irq_handler [i915]] *ERROR* CPU pipe A
FIFO underrun
I have screen flashing and some tearing on HP Elitebook Folio G1. Had
the same problem on 16.04 and 18.04. Previously was able to use
"i915.enable_rc6=0" on 16.04 and then "intel_idle.max_cstate=4" on
18.04 as workarounds. I'd like to help get to the bottom of this
rather than a work-around, but will need guidance to participate.
Description: Ubuntu 20.04 LTS
Release: 20.04
ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: xorg 1:7.7+19ubuntu14
ProcVersionSignature: Ubuntu 5.4.0-26.30-generic 5.4.30
Uname: Linux 5.4.0-26-generic x86_64
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CasperMD5CheckResult: skip
CompositorRunning: None
CurrentDesktop: ubuntu:GNOME
Date: Fri Apr 24 10:16:32 2020
DistUpgraded: Fresh install
DistroCodename: focal
DistroVariant: ubuntu
ExtraDebuggingInterest: Yes
GraphicsCard:
Intel Corporation HD Graphics 515 [8086:191e] (rev 07) (prog-if 00 [VGA
controller])
Subsystem: Hewlett-Packard Company HD Graphics 515 [103c:8170]
InstallationDate: Installed on 2020-04-24 (0 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
Lsusb:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 004: ID 04f2:b58e Chicony Electronics Co., Ltd HP IR Camera
Bus 001 Device 003: ID 8087:0a2b Intel Corp.
Bus 001 Device 002: ID 04f2:b58f Chicony Electronics Co., Ltd HP HD Camera
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: HP HP EliteBook Folio G1
ProcEnviron:
TERM=xterm-256color
PATH=(custom, no user)
XDG_RUNTIME_DIR=<set>
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-26-generic
root=UUID=3ef2b246-80ee-47da-ba11-fdfc1eef2362 ro quiet splash vt.handoff=7
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 01/05/2020
dmi.bios.vendor: HP
dmi.bios.version: N91 Ver. 01.45
dmi.board.name: 8170
dmi.board.vendor: HP
dmi.board.version: KBC Version 29.73
dmi.chassis.type: 10
dmi.chassis.vendor: HP
dmi.modalias:
dmi:bvnHP:bvrN91Ver.01.45:bd01/05/2020:svnHP:pnHPEliteBookFolioG1:pvr:rvnHP:rn8170:rvrKBCVersion29.73:cvnHP:ct10:cvr:
dmi.product.family: 103C_5336AN G=N L=BUS B=HP S=ELI
dmi.product.name: HP EliteBook Folio G1
dmi.product.sku: P2C88AV
dmi.sys.vendor: HP
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.101-2
version.libgl1-mesa-dri: libgl1-mesa-dri 20.0.4-2ubuntu1
version.libgl1-mesa-glx: libgl1-mesa-glx N/A
version.xserver-xorg-core: xserver-xorg-core 2:1.20.8-2ubuntu2
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:19.1.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel
2:2.99.917+git20200226-1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.16-1
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