** Also affects: linux (Ubuntu)
   Importance: Undecided
       Status: New

** Also affects: linux (Ubuntu Hirsute)
   Importance: Undecided
       Status: New

** Also affects: linux-oem-5.6 (Ubuntu Hirsute)
   Importance: Undecided
       Status: Invalid

** Also affects: linux (Ubuntu Groovy)
   Importance: Undecided
       Status: New

** Also affects: linux-oem-5.6 (Ubuntu Groovy)
   Importance: Undecided
       Status: New

** No longer affects: linux-oem-5.6 (Ubuntu Groovy)

** No longer affects: linux-oem-5.6 (Ubuntu Hirsute)

** Changed in: linux (Ubuntu Focal)
       Status: New => Won't Fix

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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux-oem-5.6 in Ubuntu.
https://bugs.launchpad.net/bugs/1906168

Title:
  Prevent thermal shutdown during boot process

Status in HWE Next:
  New
Status in linux package in Ubuntu:
  New
Status in linux-oem-5.6 package in Ubuntu:
  Invalid
Status in linux source package in Focal:
  Won't Fix
Status in linux-oem-5.6 source package in Focal:
  Confirmed
Status in linux source package in Groovy:
  New
Status in linux source package in Hirsute:
  New

Bug description:
  [Impact]
  Surprising thermal shutdown at boot on Intel based mobile workstations.
   
  [Fix]
  Since these thermal devcies are not in ACPI ThermalZone, OS shouldn't
  shutdown the system.

  These critial temperatures are for usespace to handle, so let kernel
  know it shouldn't handle it.

  SRU for stable kernels will be sent after the fix is in upstream.

  [Test]
  Use reboot stress as a reproducer. 5% chance to see a surprising
  shutdown at boot.

  With the fix applied, the thermal shutdown is no longer reproducible.

  [Where problems could occur]
  For ACPI based platforms, we still have "acpitz" to protect systems from
  overheating. If these acpitz sensors don't work, then the system could
  face real overheating issue.

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