** Also affects: linux (Ubuntu Xenial)
Importance: Undecided
Status: New
** Also affects: linux-oem (Ubuntu Xenial)
Importance: Undecided
Status: New
** Changed in: linux-oem (Ubuntu)
Status: New => Invalid
** Changed in: linux (Ubuntu Xenial)
Status: New => Invalid
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https://bugs.launchpad.net/bugs/1741206
Title:
QCA Rome bluetooth failed to work after applying reset-resume quirk
Status in linux package in Ubuntu:
Triaged
Status in linux-oem package in Ubuntu:
Invalid
Status in linux source package in Xenial:
Invalid
Status in linux-oem source package in Xenial:
New
Bug description:
== SRU Justification ==
[Impact]
Some QCA ROME bluetooth devices does not work after runtime suspend/resume
after SRU LP: #1734020.
[Fix]
The commit let btusb reset at second time it resume, i.e. btusb_open(). The
btusb stops working because the reset happens *after* btusb_open(). The reset
should be done at hub port initialization, before btusb_probe().
Revert the bad commit and use the reset-resume quirk in USB core
stack.
[Test]
Cherry-picked the commit into Artful/OEM kernel and the issue is fixed.
[Regression Potential]
Low. This is limited to QCA Rome, also verified by the original quirk author.
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