Disable unreliable HPET on CFL-H system
Bug #1852216 reported by
Kai-Heng Feng
This bug affects 1 person
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
HWE Next |
Fix Released
|
Undecided
|
Unassigned | ||
linux (Ubuntu) |
Fix Released
|
Undecided
|
Unassigned | ||
Bionic |
Fix Released
|
Undecided
|
Unassigned | ||
Disco |
Fix Released
|
Undecided
|
Unassigned | ||
Eoan |
Fix Released
|
Undecided
|
Unassigned | ||
linux-oem (Ubuntu) |
Fix Released
|
Undecided
|
Unassigned | ||
Bionic |
Fix Released
|
Undecided
|
Unassigned | ||
linux-oem-osp1 (Ubuntu) |
Invalid
|
Undecided
|
Unassigned | ||
Bionic |
Fix Released
|
Undecided
|
Unassigned | ||
Disco |
Fix Released
|
Undecided
|
Unassigned | ||
Eoan |
Fix Released
|
Undecided
|
Unassigned |
Bug Description
[Impact]
TSC marked unstable by skewed HPET after Intel CFL-H SoC reached PC10
state.
[Fix]
Disable HPET on CFL-H SoC.
[Test]
I can confirm disabling HPET can workaround this issue.
[Regression Potential]
Low. TSC on recent Intel SoC is now an invariant clocksource, so it's
harmless to disable HPET on these platforms.
Changed in linux-oem (Ubuntu Disco): | |
status: | New → Won't Fix |
Changed in linux-oem (Ubuntu Eoan): | |
status: | New → Invalid |
Changed in linux-oem (Ubuntu Disco): | |
status: | Won't Fix → Invalid |
Changed in linux-oem-osp1 (Ubuntu Disco): | |
status: | New → Invalid |
Changed in linux-oem-osp1 (Ubuntu Eoan): | |
status: | New → Invalid |
tags: | added: oem-priority originate-from-1852112 somerville |
Changed in linux-oem (Ubuntu Bionic): | |
status: | New → Fix Committed |
no longer affects: | linux-oem (Ubuntu Disco) |
no longer affects: | linux-oem (Ubuntu Eoan) |
Changed in linux-oem-osp1 (Ubuntu Bionic): | |
status: | New → Fix Committed |
tags: |
added: verification-done-bionic removed: verification-needed-bionic |
Changed in linux (Ubuntu Bionic): | |
status: | Incomplete → Fix Committed |
Changed in linux (Ubuntu Disco): | |
status: | Incomplete → Fix Committed |
Changed in linux (Ubuntu Eoan): | |
status: | Incomplete → Fix Committed |
tags: |
added: verification-done-disco verification-done-eoan removed: verification-needed-disco verification-needed-eoan |
Changed in linux-oem-osp1 (Ubuntu): | |
status: | New → Invalid |
Changed in hwe-next: | |
status: | New → Fix Released |
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This bug is missing log files that will aid in diagnosing the problem. While running an Ubuntu kernel (not a mainline or third-party kernel) please enter the following command in a terminal window:
apport-collect 1852216
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the Ubuntu Kernel Team.