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** Changed in: linux (Ubuntu)
       Status: New => Confirmed

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https://bugs.launchpad.net/bugs/1905103

Title:
  Unrecoverable random freezes; Ubuntu 20.04; HP Spectre X360

Status in linux package in Ubuntu:
  Confirmed

Bug description:
  The system freezes at apparently random times with no warning and no
  possibility to recover. The system becomes completely unresponsive and
  has to be hard reset (which just corrupted my external storage). The
  mouse cursor does not move and no keyboard input works. In particular,
  Alt+SysRq+REISUB does not work (confirmed that it is activated and
  works in normal conditions). Neither does Ctrl+Alt+F2. If a youtube
  music is playing it gets stuck in a short repeat loop (stutter) then
  stops after a while. The freezes have been happening for the past
  month or so at intervals of about 1-3 days, not long after I installed
  Ubuntu 20.04 as the first linux distro on this machine.

  
  No program seems to be crashing before the freeze happens, and I have not 
found any pattern of activity that can reliably trigger the freeze. It has 
happened while surfing the internet or just viewing files. The kernel logs 
nothing unusual before the freeze (please see the attached kern.log file; it 
contains multiple instances of the freeze: look for where the system boots 
without proper shut down beforehand).

  I have tried switching between the open-source and the proprietary video 
drivers. It didn't help. Also uninstalled xserver-xorg-video-intel with no 
result, so installed it back.
  Not sure what to try next. Very frustrating as the hard resets can damage 
important work and data on disks.

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: linux-image-5.4.0-54-generic 5.4.0-54.60
  ProcVersionSignature: Ubuntu 5.4.0-54.60-generic 5.4.65
  Uname: Linux 5.4.0-54-generic x86_64
  ApportVersion: 2.20.11-0ubuntu27.12
  Architecture: amd64
  AudioDevicesInUse:
   USER        PID ACCESS COMMAND
   /dev/snd/controlC0:  farshad    1494 F.... pulseaudio
  CasperMD5CheckResult: skip
  CurrentDesktop: ubuntu:GNOME
  Date: Fri Nov 20 15:11:20 2020
  InstallationDate: Installed on 2020-10-10 (41 days ago)
  InstallationMedia: Ubuntu 20.04.1 LTS "Focal Fossa" - Release amd64 (20201007)
  MachineType: HP HP Spectre x360 Convertible 15-df1xxx
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  ProcFB: 0 i915drmfb
  ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-5.4.0-54-generic 
root=UUID=0536b924-b1a1-4ba7-bff4-04df7284b913 ro quiet splash vt.handoff=7
  RelatedPackageVersions:
   linux-restricted-modules-5.4.0-54-generic N/A
   linux-backports-modules-5.4.0-54-generic  N/A
   linux-firmware                            1.187.4
  RfKill:
   1: phy0: Wireless LAN
    Soft blocked: no
    Hard blocked: no
  SourcePackage: linux
  UpgradeStatus: No upgrade log present (probably fresh install)
  dmi.bios.date: 06/01/2020
  dmi.bios.vendor: AMI
  dmi.bios.version: F.22
  dmi.board.asset.tag: Base Board Asset Tag
  dmi.board.name: 863F
  dmi.board.vendor: HP
  dmi.board.version: 54.23
  dmi.chassis.type: 31
  dmi.chassis.vendor: HP
  dmi.chassis.version: Chassis Version
  dmi.modalias: 
dmi:bvnAMI:bvrF.22:bd06/01/2020:svnHP:pnHPSpectrex360Convertible15-df1xxx:pvr:rvnHP:rn863F:rvr54.23:cvnHP:ct31:cvrChassisVersion:
  dmi.product.family: 103C_5335KV HP Spectre
  dmi.product.name: HP Spectre x360 Convertible 15-df1xxx
  dmi.product.sku: 7UT64UA#ABA
  dmi.sys.vendor: HP

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