APPLIED[J]: [SRU] [OEM-5.14] [PATCH 0/1] Fix spurious wakeup caused by Intel 7560 WWAN

Andrea Righi andrea.righi at canonical.com
Fri Jan 14 07:00:12 UTC 2022


On Wed, Jan 05, 2022 at 06:02:27PM +0800, Kai-Heng Feng wrote:
> BugLink: https://bugs.launchpad.net/bugs/1956443
> 
> [Impact]
> Spurious wakeup from s2idle caused by Intel 7560 WWAN device.
> 
> [Fix]
> Keep the device at D0 to prevent the unwanted wakeup. Since PCIe ASPM is
> enabled, the power consumption impact is minimal.
> 
> [Test]
> No more spurious wakeup on s2idle.
> 
> [Where problems could occur]
> If the device somehow requires to be power-cycled via D3, this may break
> the assumption.

It was not targeted explicitly for jammy, but it looks like a reasonable
fix, therefore: applied to jammy:linux.

Thanks,
-Andrea



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