Public bug reported:
In newer Ubuntu 18.04 HWE kernels, it is possible for GPU HDA
controllers to be dynamically runtime-suspended if the HDA's
power/control mode is set to "auto". However, pm-utils explicitly sets
this to "on" when resuming, which prevents runtime power management of
these devices from working as intended.
** Affects: pm-utils (Ubuntu)
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/1854985
Title:
pm-utils overrides runtime power management mode for audio devices
Status in pm-utils package in Ubuntu:
New
Bug description:
In newer Ubuntu 18.04 HWE kernels, it is possible for GPU HDA
controllers to be dynamically runtime-suspended if the HDA's
power/control mode is set to "auto". However, pm-utils explicitly sets
this to "on" when resuming, which prevents runtime power management of
these devices from working as intended.
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https://bugs.launchpad.net/ubuntu/+source/pm-utils/+bug/1854985/+subscriptions
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