Kernel Bug Tracker – Bug 15012
Slow resume from RAM on Panasonic Y7c laptop (30s)
Last modified: 2013-12-10 17:21:50 UTC
Created attachment 24487 [details]
Resume from RAM takes 30s or more.
[19433.160502] PM: resume devices took 34.120 seconds
Maybe related to
[19432.480489] PM: Device MAT0019:00 failed to resume: error -22
This device is provided by the panasonic-laptop module.
please attach the acpidump output of your laptop.
It seems that we failed to evaluate SSET method in acpi_pcc_hotkey_resume.
Created attachment 24715 [details]
sudo acpidump --output
The ACPI dump (after a fresh reboot without any s2ram)
bug is blocked because it seems that Harald is not active anymore...
cc Matthew, who will be the maintainer of all platform drivers. :p
Maybe we need someone to volunteer to maintain the panasonic-laptop driver.
The only place I can see this stalling is in the call to EC83 (via ECBF, EC0B). Some kind of conflict with the EC driver at resume time? ECST gets set when the _REG method is called, so we shouldn't be following the =0 path.