http://bugzilla.suse.com/show_bug.cgi?id=951196
Bug ID: 951196
Summary: Some Haswell laptops wake up without reason from S3
Classification: openSUSE
Product: openSUSE Distribution
Version: Leap 42.1 RC1 1
Hardware: Other
OS: Other
Status: NEW
Severity: Normal
Priority: P5 - None
Component: Kernel
Assignee: kernel-maintainers@forge.provo.novell.com
Reporter: oneukum@suse.com
QA Contact: qa-bugs@suse.de
CC: tiwai@suse.com
Depends on: 949981
Blocks: 951194, 951195, 951165
Found By: ---
Blocker: ---
+++ This bug was initially created as a clone of Bug #949981 +++
This one is from upstream. Our experimentation always produced contradictory
results. Upstream tests showed that the issue depends on the type of the
chipset used:
From: Laura Abbott
We received several reports of systems rebooting and powering on
after an attempted shutdown. Testing showed that setting
XHCI_SPURIOUS_WAKEUP quirk in addition to the XHCI_SPURIOUS_REBOOT
quirk allowed the system to shutdown as expected for LynxPoint-LP
xHCI controllers. Set the quirk back.
Note that the quirk was originally introduced for LynxPoint and
LynxPoint-LP just for this same reason. See:
commit 638298dc66ea ("xhci: Fix spurious wakeups after S5 on Haswell")
It was later limited to only concern HP machines as it caused
regression on some machines, see both bug and commit:
Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=66171
commit 6962d914f317 ("xhci: Limit the spurious wakeup fix only to HP machines")
Later it was discovered that the powering on after shutdown
was limited to LynxPoint-LP (Haswell-ULT) and that some non-LP HP
machine suffered from spontaneous resume from S3 (which should
not be related to the SPURIOUS_WAKEUP quirk at all). An attempt
to fix this then removed the SPURIOUS_WAKEUP flag usage completely.
commit b45abacde3d5 ("xhci: no switching back on non-ULT Haswell")
Current understanding is that LynxPoint-LP (Haswell ULT) machines
need the SPURIOUS_WAKEUP quirk, otherwise they will restart, and
plain Lynxpoint (Haswell) machines may _not_ have the quirk
set otherwise they again will restart.
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