Public bug reported:
[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.
** Affects: hwe-next
Importance: Undecided
Status: New
** Affects: linux (Ubuntu)
Importance: Undecided
Status: Incomplete
** Affects: linux-oem (Ubuntu)
Importance: Undecided
Status: New
** Affects: linux-oem-osp1 (Ubuntu)
Importance: Undecided
Status: New
** Affects: linux (Ubuntu Bionic)
Importance: Undecided
Status: Incomplete
** Affects: linux-oem (Ubuntu Bionic)
Importance: Undecided
Status: New
** Affects: linux-oem-osp1 (Ubuntu Bionic)
Importance: Undecided
Status: New
** Affects: linux (Ubuntu Disco)
Importance: Undecided
Status: Incomplete
** Affects: linux-oem (Ubuntu Disco)
Importance: Undecided
Status: Invalid
** Affects: linux-oem-osp1 (Ubuntu Disco)
Importance: Undecided
Status: Invalid
** Affects: linux (Ubuntu Eoan)
Importance: Undecided
Status: Incomplete
** Affects: linux-oem (Ubuntu Eoan)
Importance: Undecided
Status: Invalid
** Affects: linux-oem-osp1 (Ubuntu Eoan)
Importance: Undecided
Status: Invalid
** Tags: oem-priority originate-from-1852112 somerville
** Also affects: linux-oem (Ubuntu)
Importance: Undecided
Status: New
** Also affects: linux-oem-osp1 (Ubuntu)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Eoan)
Importance: Undecided
Status: New
** Also affects: linux-oem (Ubuntu Eoan)
Importance: Undecided
Status: New
** Also affects: linux-oem-osp1 (Ubuntu Eoan)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Disco)
Importance: Undecided
Status: New
** Also affects: linux-oem (Ubuntu Disco)
Importance: Undecided
Status: New
** Also affects: linux-oem-osp1 (Ubuntu Disco)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Bionic)
Importance: Undecided
Status: New
** Also affects: linux-oem (Ubuntu Bionic)
Importance: Undecided
Status: New
** Also affects: linux-oem-osp1 (Ubuntu Bionic)
Importance: Undecided
Status: New
** 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
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1852216
Title:
Disable unreliable HPET on CFL-H system
Status in HWE Next:
New
Status in linux package in Ubuntu:
Incomplete
Status in linux-oem package in Ubuntu:
New
Status in linux-oem-osp1 package in Ubuntu:
New
Status in linux source package in Bionic:
Incomplete
Status in linux-oem source package in Bionic:
New
Status in linux-oem-osp1 source package in Bionic:
New
Status in linux source package in Disco:
Incomplete
Status in linux-oem source package in Disco:
Invalid
Status in linux-oem-osp1 source package in Disco:
Invalid
Status in linux source package in Eoan:
Incomplete
Status in linux-oem source package in Eoan:
Invalid
Status in linux-oem-osp1 source package in Eoan:
Invalid
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.
To manage notifications about this bug go to:
https://bugs.launchpad.net/hwe-next/+bug/1852216/+subscriptions
--
Mailing list: https://launchpad.net/~kernel-packages
Post to : kernel-packages@lists.launchpad.net
Unsubscribe : https://launchpad.net/~kernel-packages
More help : https://help.launchpad.net/ListHelp
