*** This bug is a duplicate of bug 1806242 ***
https://bugs.launchpad.net/bugs/1806242
https://www.dedoimedo.com/computers/intel-microcode-atomic-update.html
TLDR
`
Apparently, hardware-based panel refresh supports automatic entry and exit from
self-refresh. It is also an atomic operation, which means the processor will
wait for it to complete until it finishes. Instinctively, we can assume there
is some kind of an issue here, because if it takes to long for the screen to
refresh, it may appear frozen.
Perhaps the driver misses buffers, or something else in the driver blocks the
self-refresh functionality. This is not a guaranteed reason for the problem,
but it a decent rule of thumb for what we are facing. And now, we can, with
some confidence, attempt to apply a workaround that may help mitigate the
freeze issues until a complete solution is provided with a driver update as
part of normal distro update cycle. Hopefully.
`
Work arounds
Install Intel's proprietary firmware (Intel microcode)
Under /etc/modprobe.d/, you will need to create a configuration file
i915.conf, if it does not already exist. Then, inside this file, you will need
to add the following line:
options i915 enable_psr=0
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https://bugs.launchpad.net/bugs/1813423
Title:
System freezing or flickering with i915 error
[drm:intel_pipe_update_end [i915]] *ERROR* Atomic update failure on
pipe A
Status in linux package in Ubuntu:
Confirmed
Status in xorg-server package in Ubuntu:
Confirmed
Bug description:
My system keeps freezing on a brand new install of Kubuntu 18.10,
always with the kern.log error "[drm:intel_pipe_update_end [i915]]
*ERROR* Atomic update failure on pipe A (start=4120234 end=4120235)
time 486 us, min 763, max 767, scanline start 760, end 783"
I think it's probably a duplicate of these bugs which were closed unresolved:
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1660619 (closed as it was
on an older version of Ubuntu)
https://bugs.launchpad.net/ubuntu/+source/xorg/+bug/1671975 (closed because
it was a duplicate of the first bug)
It happens far more frequently if I have desktop effects turned on,
and far less frequently when using a live USB key (at always happens
eventually though. Usually once every few hours.)
Please advise how I can help triage / test. My system is a new install
now, so I'm perfectly willing to modify / reinstall to help testing
(I've reinstalled 5 times to test things, but never managed to find a
solution)
ProblemType: Bug
DistroRelease: Ubuntu 18.10
Package: xorg 1:7.7+19ubuntu8
ProcVersionSignature: Ubuntu 4.18.0-13.14-generic 4.18.17
Uname: Linux 4.18.0-13-generic x86_64
ApportVersion: 2.20.10-0ubuntu13.1
Architecture: amd64
BootLog: Error: [Errno 13] Permission denied: '/var/log/boot.log'
CompositorRunning: None
CurrentDesktop: KDE
Date: Sat Jan 26 14:19:52 2019
DistUpgraded: Fresh install
DistroCodename: cosmic
DistroVariant: ubuntu
ExtraDebuggingInterest: No
GraphicsCard:
Intel Corporation Atom Processor Z36xxx/Z37xxx Series Graphics & Display
[8086:0f31] (rev 0e) (prog-if 00 [VGA controller])
Subsystem: Hewlett-Packard Company Atom Processor Z36xxx/Z37xxx Series
Graphics & Display [103c:227a]
InstallationDate: Installed on 2019-01-18 (8 days ago)
InstallationMedia: Kubuntu 18.10 "Cosmic Cuttlefish" - Release amd64
(20181017.2)
MachineType: Hewlett-Packard HP Pavilion 14 Notebook PC
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.18.0-13-generic
root=UUID=2c4bf3d1-1ff2-4345-95c0-c68d0e073df9 ro nogpumanager
modprobe.blacklist=nouveau,nvidiafb,nvidia-modeset,nvidia-uvm,nvidia
intel_iommu=igfx_off i915.semaphores=1 i915.enable_fbc=0 i915.modeset=1
i915.enable_rc=7 i915.enable_dc=2 i915.enable_ppgtt=3 i915.enable_guc_loading=1
i915.lvds_channel_mode=2 i915.lvds_use_ssc=1 quiet splash vt.handoff=1
SourcePackage: xorg
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 03/18/2015
dmi.bios.vendor: Insyde
dmi.bios.version: F.42
dmi.board.asset.tag: Type2 - Board Asset Tag
dmi.board.name: 227A
dmi.board.vendor: Hewlett-Packard
dmi.board.version: 76.35
dmi.chassis.asset.tag: Chassis Asset Tag
dmi.chassis.type: 10
dmi.chassis.vendor: Hewlett-Packard
dmi.chassis.version: Chassis Version
dmi.modalias:
dmi:bvnInsyde:bvrF.42:bd03/18/2015:svnHewlett-Packard:pnHPPavilion14NotebookPC:pvr096C110800405F10000620180:rvnHewlett-Packard:rn227A:rvr76.35:cvnHewlett-Packard:ct10:cvrChassisVersion:
dmi.product.family: 103C_5335KV G=N L=CON B=HP S=PAV X=Null
dmi.product.name: HP Pavilion 14 Notebook PC
dmi.product.sku: J9L01UA#ABL
dmi.product.version: 096C110800405F10000620180
dmi.sys.vendor: Hewlett-Packard
version.compiz: compiz N/A
version.libdrm2: libdrm2 2.4.95-1
version.libgl1-mesa-dri: libgl1-mesa-dri 18.2.2-0ubuntu1
version.libgl1-mesa-glx: libgl1-mesa-glx 18.2.2-0ubuntu1
version.xserver-xorg-core: xserver-xorg-core 2:1.20.1-3ubuntu2.1
version.xserver-xorg-input-evdev: xserver-xorg-input-evdev N/A
version.xserver-xorg-video-ati: xserver-xorg-video-ati 1:18.1.0-1
version.xserver-xorg-video-intel: xserver-xorg-video-intel
2:2.99.917+git20171229-1ubuntu1
version.xserver-xorg-video-nouveau: xserver-xorg-video-nouveau 1:1.0.15-3
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