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Message-Id: <200706221607.33274.nigel@nigel.suspend2.net>
Date: Fri, 22 Jun 2007 16:07:33 +1000
From: Nigel Cunningham <nigel@...el.suspend2.net>
To: LKML <linux-kernel@...r.kernel.org>
Cc: dmitry.torokhov@...il.com
Subject: Failure to properly reinit i8042 post suspend-to-ram
Hi.
I have recently begun to try and use suspend to ram more, and have an
intermittent problem. Actually, it's a couple of (possibly related) problems,
but I'll start with the one that's easiest.
Sometimes, when I resume, the keyboard stops responding. I then need to hold
down the power button for 4 seconds. At the next boot, things are still not
right. The i8042 controller seems to be confused about it's mode, because I
get the following differences in dmesg to a 'normal' boot:
--- good-boot-dmesg-no-timestamp.txt 2007-06-22 15:54:03.000000000 +1000
+++ problem-boot-dmesg-no-timestamp.txt 2007-06-22 15:54:18.000000000 +1000
@@ -203,14 +203,11 @@
pnp: the driver 'i8042 aux' has been registered
pnp: match found with the PnP device '00:01' and the driver 'i8042 aux'
at 0x60,0x64 irq 1,12
-i8042.c: Detected active multiplexing controller, rev 1.1.
serio: i8042 KBD port at 0x60,0x64 irq 1
-serio: i8042 AUX0 port at 0x60,0x64 irq 12
-serio: i8042 AUX1 port at 0x60,0x64 irq 12
-serio: i8042 AUX2 port at 0x60,0x64 irq 12
-serio: i8042 AUX3 port at 0x60,0x64 irq 12
+serio: i8042 AUX port at 0x60,0x64 irq 12
mice: PS/2 mouse device common for all mice
input: PC Speaker as /class/input/input0
+input: AT Translated Set 2 keyboard as /class/input/input1
pnp: the driver 'rtc_cmos' has been registered
pnp: match found with the PnP device '00:03' and the driver 'rtc_cmos'
rtc_cmos: dev (254:0)
I've been able to log in remotely after suspending to ram, and see the "failed
to resume active multiplexor" message in dmesg at that stage. Dmitry (or
others), is this a known issue? I'm more than happy to probe further if not.
In case it's relevant, the other issue is that sometimes the hard drive stays
on constantly and the system becomes unresponsive. The controller is an
ALI15X3. I'm using the old drivers.
Nigel
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