Tiger Lake PMC core driver fixes
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Fix Released
|
Undecided
|
Unassigned | ||
Groovy |
Fix Released
|
Medium
|
AceLan Kao | ||
linux-oem-5.6 (Ubuntu) |
Invalid
|
Undecided
|
Unassigned | ||
Focal |
Fix Released
|
Undecided
|
AceLan Kao |
Bug Description
[Impact]
The power gating status is not correct and the slp_s0 value is not correct on Intel TigerLake platform.
The slp_s0 value is essential for our tools to confirm whether the
system enters deep sleep,
and the power gating is critical for another tool to check which
device is still running when the system is suspended.
Both are not that useful for a normal user, but useful for developers
to debug power consumption issues.
[Fix]
The patchset in https://<email address hidden>/ provides several critical fixes for intel_pmc_core driver.
[Test]
Verified on some TigerLake platforms
[Regression Potential]
Low, the fix for status bits map and the slp_s0 calculation are simple and clear, should have low impact on regression.
no longer affects: | linux (Ubuntu Focal) |
no longer affects: | linux-oem-5.6 (Ubuntu Groovy) |
Changed in linux (Ubuntu): | |
status: | Incomplete → Invalid |
Changed in linux-oem-5.6 (Ubuntu): | |
status: | New → Invalid |
Changed in linux (Ubuntu Groovy): | |
status: | Incomplete → In Progress |
Changed in linux-oem-5.6 (Ubuntu Focal): | |
status: | New → In Progress |
Changed in linux (Ubuntu Groovy): | |
assignee: | nobody → AceLan Kao (acelankao) |
Changed in linux-oem-5.6 (Ubuntu Focal): | |
assignee: | nobody → AceLan Kao (acelankao) |
description: | updated |
Changed in linux (Ubuntu Groovy): | |
importance: | Undecided → Medium |
description: | updated |
Changed in linux (Ubuntu Groovy): | |
status: | In Progress → Fix Committed |
Changed in linux-oem-5.6 (Ubuntu Focal): | |
status: | In Progress → Fix Committed |
tags: |
added: verification-done-focal verification-done-groovy removed: verification-needed-focal verification-needed-groovy |
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 1899883
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.