** Also affects: linux (Ubuntu Xenial)
Importance: Undecided
Status: New
** Also affects: linux-oem (Ubuntu Xenial)
Importance: Undecided
Status: New
** Changed in: linux (Ubuntu Xenial)
Status: New => Invalid
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https://bugs.launchpad.net/bugs/1764684
Title:
Fix an issue that some PCI devices get incorrectly suspended
Status in HWE Next:
New
Status in linux package in Ubuntu:
Triaged
Status in linux-oem package in Ubuntu:
New
Status in linux source package in Xenial:
Invalid
Status in linux-oem source package in Xenial:
New
Bug description:
===SRU Justification===
[Impact]
Some PCI device are not power managed by system firmware get runtime
suspended incorrectly. In this case it's an xHC device, which can't be woken up
by plugging USB device.
[Test]
With the patch, the xHC no longer get put to suspend incorrectly. USB devices
can work on the xHC now.
[Fix]
We need to check if the device is power managed by system firmware, also if
it supports PME from D3hot.
[Regression Potential]
Low.
It fixes a regression caused by the PM core refactor.
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