Hirsute got this fixed through stable update since Ubuntu-5.11.0-18.19
** Changed in: linux (Ubuntu Hirsute)
Status: In Progress => Fix Released
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https://bugs.launchpad.net/bugs/1919116
Title:
Intel e1000e blocks the system to enter PC10 on TGL platform
Status in HWE Next:
New
Status in linux package in Ubuntu:
Invalid
Status in linux-oem-5.10 package in Ubuntu:
Invalid
Status in linux source package in Focal:
Invalid
Status in linux-oem-5.10 source package in Focal:
Fix Released
Status in linux-oem-5.13 source package in Focal:
Invalid
Status in linux source package in Hirsute:
Fix Released
Status in linux-oem-5.10 source package in Hirsute:
Invalid
Status in linux-oem-5.13 source package in Hirsute:
Invalid
Status in linux source package in Impish:
Invalid
Status in linux-oem-5.10 source package in Impish:
Invalid
Status in linux-oem-5.13 source package in Impish:
Invalid
Bug description:
[Impact]
The deepest package cstate is PC9 and fails to enter low power mode during
s2i on Tiger Lake platform.
[Fix]
Intel provides a fix for TGL platform
https://patchwork.kernel.org/project/platform-driver-x86/patch/[email protected]/
[Test]
Verified on Dell TGL platforms and it works as expected.
[Where problem could occur]
It actually adds a quirk for tgl platform to ignore Latency Tolerance
Reporting (LTR) in pmc_core driver, that makes GBE on TGL won't block the
system to enter deeper PC state. It should be safe for all TGL platforms.
[Misc]
Currently, this commit is not accepted and a v2 is expected. So, submit this
commit to oem kernel only and will revert it and submit final version of this
patch to ubuntu kernels later.
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