https://bugzilla.kernel.org/show_bug.cgi?id=203579
Bug ID: 203579
Summary: Can't wake using LID/Keyboard (Regresssion starting
4.21 / 4.19.36)
Product: ACPI
Version: 2.5
Kernel Version: 4.21
Hardware: All
OS: Linux
Tree: Mainline
Status: NEW
Severity: normal
Priority: P1
Component: EC
Assignee: acpi...@kernel-bugs.osdl.org
Reporter: rajatxj...@gmail.com
Regression: No
I'm a chromeos developer. The chromebooks use S0ix (i.e. s2idle) for suspend.
I noticed that recently multiple systems couldn't wake from S0ix using
LID/Keyboard, after I upgraded from 4.19.35 to 4.19.36.
I cannot wake my system up using keystrokes and using lid open. The power
button wake still continues to work, but the keyboard and lid open wake does
not work.
localhost /sys # cat /proc/acpi/wakeup
Device S-state Status Sysfs node
LID0 S4 *enabled platform:PNP0C0D:00
CREC S5 *disabled platform:GOOG0004:00
*disabled platform:cros-ec-dev.1.auto
*disabled platform:cros-ec-accel.0
*disabled platform:cros-ec-accel.1
*disabled platform:cros-ec-gyro.0
*disabled platform:cros-ec-ring.0
*disabled platform:cros-usbpd-charger.2.auto
*disabled platform:cros-usbpd-logger.3.auto
D015 S3 *enabled i2c:i2c-ELAN0000:00
PENH S3 *enabled platform:PRP0001:00
XHCI S3 *enabled pci:0000:00:14.0
GLAN S4 *disabled
WIFI S3 *disabled pci:0000:00:14.3
localhost /sys #
I bisected and the regression started with this commit:
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=f941d3e41da7f86bdb9dcc1977c2bcc6b89bfe47
If I revert the patch, things start to work OK.
I debugged and found that although PNP0C0D:00 is wake capable and should wakeup
the system, its corresponding GPE is not being enabled. The particular GPE's
gpe_register_info->enable_for_wake does not have any bits set when
acpi_enable_all_wakeup_gpes() comes around to use it.
Please let me know if you need any more info / logs for this.
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