Re: Changes in sleep mode, on x86 PC

From: Pavel Machek
Date: Tue Mar 29 2016 - 10:15:48 EST


On Tue 2016-03-29 16:00:09, Oliver Neukum wrote:
> On Tue, 2016-03-29 at 15:06 +0200, Rafael J. Wysocki wrote:
> > On Monday, March 28, 2016 11:20:12 PM Pavel Machek wrote:
> > > Hi!
> > >
> > > Few releases ago, I could wake up PC from S3 sleep by hitting any
> > > key. That ceased to work some time before, keyboard would just light a
> > > NUM lock LED when I hit a key (4.5). Now PC seems to be sleeping (in
> > > S3) with NUM lock LED on (4.6-rc0).

Ok, that "sleeping with numlock LED on" is not reproducible.

> > > Any idea what is going on there? Does it happen for you, too? What is
> > > the expected behaviour?
> > >
> > > Debian 8.3, with MATE desktop, I just hit the "moon" key to make it
> > > sleep. Keyboard is on USB.
> >
> > That's rather important.
> >
> > Clearly, something in the USB HID land has changed lately.
> Not necessarily. ACPI may also be the root cause.

Ok, that breakage may be year-or-so old.

> > The expected behavior depends on whether or not the keyboard itself and the
> > USB controller are both enabled to wake up. If they are, I'd expect any
> > key press to generate a wakeup event.
> What does /proc/acpi/wakeup say?

Device S-state Status Sysfs node
P0P1 S3 *disabled pci:0000:00:01.0
P0P2 S4 *disabled pci:0000:00:1e.0
PS2K S3 *disabled
PS2M S3 *disabled
UAR1 S3 *disabled pnp:00:03
USB0 S3 *enabled pci:0000:00:1d.0
USB1 S3 *enabled pci:0000:00:1d.1
USB2 S3 *enabled pci:0000:00:1d.2
USB3 S3 *enabled pci:0000:00:1d.3
EUSB S4 *enabled pci:0000:00:1d.7
P0P9 S4 *disabled pci:0000:00:1c.0
P0PA S4 *disabled pci:0000:00:1c.1
P0PB S4 *disabled
P0PC S4 *disabled
P0PD S4 *disabled
P0PE S4 *disabled
PWRB S3 *enabled platform:PNP0C0C:00

Directly-connected USB keyboard. Numlock goes on when I hit a key, but
it stays sleeping.


(cesky, pictures)