linux-kernel - Re: suspend vs usb and PS/2 ports

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <200909302354.55673.rjw@sisk.pl>
Date:	Wed, 30 Sep 2009 23:54:55 +0200
From:	"Rafael J. Wysocki" <rjw@...k.pl>
To:	Michael Tokarev <mjt@....msk.ru>
Cc:	"Linux-kernel" <linux-kernel@...r.kernel.org>,
	Alan Stern <stern@...land.harvard.edu>,
	Oliver Neukum <oliver@...kum.org>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	pm list <linux-pm@...ts.linux-foundation.org>
Subject: Re: suspend vs usb and PS/2 ports

On Wednesday 30 September 2009, Michael Tokarev wrote:
> Hello.
> 
> I've several PCs here which are able to wakeup -
> among others - from PS/2 and/or USB keyboard.
> Here for testing I'm using PS/2 keyboard and
> Asus M3A78-EM motherboard.
> 
> When I do poweroff from linux, the keyboard
> stays powered up as it should (according to
> the BIOS settings).  But when I do suspend,
> keyboard is NOT powered anymore, and hence
> the system can't be woken up from it but only
> by using the power button.
> 
> This happens consistently for many kernel
> versions.  To be fair, I don't even know if
> there was any kernel which does not show this
> behaviour: old versions was unable to do
> suspend/resume cycle on this platform at all.
> 
> Any hints for this please?

With USB, I think keyboard wake-up is off by default as it causes some
systems to wake up immediately after suspending.  Alan and Oliver can provide
more info about that.

I don't know about PS/2.

Can you post the contents of /proc/acpi/wakeup from one of these systems,
please?

Best,
Rafael
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/