linux-kernel - Re: psmouse serio4: bad data from KBC

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Date:	Tue, 3 Apr 2012 23:40:53 -0700
From:	Dmitry Torokhov <dmitry.torokhov@...il.com>
To:	Borislav Petkov <bp@...en8.de>, linux-input@...r.kernel.org,
	Alessandro Rubini <rubini@...vis.unipv.it>,
	LKML <linux-kernel@...r.kernel.org>
Subject: Re: psmouse serio4: bad data from KBC - timeout

On Wed, Apr 04, 2012 at 06:54:40AM +0200, Borislav Petkov wrote:
> Hi Dmitry,
> 
> On Tue, Apr 03, 2012 at 10:06:59AM -0700, Dmitry Torokhov wrote:
> > > I'm running 3.4-rc1 on a thinkpad x121e and it builds and boots just
> > > fine. However, after resuming from disk I get (this is the tail of
> > > dmesg):
> > > 
> > > [  905.857412] i8042: failed to resume active multiplexor, mouse won't work
> > > [  905.965568] usb 3-2: reset low-speed USB device number 2 using ohci_hcd
> > > [  907.626998] psmouse serio4: bad data from KBC - timeout
> > > [  907.675385] PM: restore of devices complete after 2358.155 msecs
> > > [  908.227481] Restarting tasks ... done.
> > > [  908.266229] video LNXVIDEO:01: Restoring backlight state
> > > [  917.628792] psmouse serio4: Failed to deactivate mouse on isa0060/serio4
> > > [  917.880639] psmouse serio4: Failed to enable mouse on isa0060/serio4
> > > [  919.867982] input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input19
> > > [  947.277011] atl1c 0000:02:00.0: atl1c: eth0 NIC Link is Up<100 Mbps Full Duplex>
> > > [  996.231116] Bluetooth: Core ver 2.16
> > > [  996.231262] NET: Registered protocol family 31
> > > [  996.231273] Bluetooth: HCI device and connection manager initialized
> > > [  996.231559] Bluetooth: HCI socket layer initialized
> > > [  996.231575] Bluetooth: L2CAP socket layer initialized
> > > [  996.231630] Bluetooth: SCO socket layer initialized
> > > 
> > > and after that the keyboard and the mouse touchpad don't work. The
> > > connected USB mouse works fine though.
> > 
> > There weren't any changes to i8042 for a while so I'd look into recent
> > ACPI/PM merges. You can also try booting with i8042.nomux to see if it
> > will work better with i8042 in legacy multiplexing mode.
> 
> thanks for looking into this.
> 
> So, I just tested the "i8042.nomux" command line option and it seems to
> work. Even the touchpad went on after rubbing on it a couple of times
> initially.
> 
> Then, I booted back into 3.4-rc1 without the above option and here's
> what I got again:
> 
> [    0.924424] i8042: PNP: PS/2 Controller [PNP0303:KBC0,PNP0f13:MSE0] at 0x60,0x64 irq 1,12
> [    0.928313] i8042: Detected active multiplexing controller, rev 1.1
> [    0.929966] serio: i8042 KBD port at 0x60,0x64 irq 1
> [    0.930628] serio: i8042 AUX0 port at 0x60,0x64 irq 12
> [    0.930890] serio: i8042 AUX1 port at 0x60,0x64 irq 12
> [    0.931175] serio: i8042 AUX2 port at 0x60,0x64 irq 12
> [    0.931343] serio: i8042 AUX3 port at 0x60,0x64 irq 12
> [    0.971523] input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input0
> [    2.086110] psmouse serio4: synaptics: Touchpad model: 1, fw: 8.0, id: 0x1e2b1, caps: 0xd001a3/0x940300/0x121c00
> [    2.086378] psmouse serio4: synaptics: serio: Synaptics pass-through port at isa0060/serio4/input0
> [    2.127547] input: SynPS/2 Synaptics TouchPad as /devices/platform/i8042/serio4/input/input1
> [    7.880045] input: TPPS/2 IBM TrackPoint as /devices/platform/i8042/serio4/serio5/input/input2
> [  193.757348] i8042: failed to resume active multiplexor, mouse won't work
> 
> It seems the mux controller doesn't resume properly (doh, it says so
> :)) so not only mousepad but keyboard is not working too.
> 
> Actually, that's not 100% correct: the keyboard does work for a short
> period of time (a couple of seconds, judging by the printk timestamps
> below) right after I resume and then it stops ...
> 
> [  195.526425] psmouse serio4: bad data from KBC - timeout
> [  205.532397] psmouse serio4: Failed to deactivate mouse on isa0060/serio4
> [  205.772260] psmouse serio4: Failed to enable mouse on isa0060/serio4
> [  207.447644] input: AT Translated Set 2 keyboard as /devices/platform/i8042/serio0/input/input15
> 
> .. with the above being the last line on dmesg.
> 
> So, I'm ready for suggestions.
> 

As I said I would start at the latest ACPI and PM merges and try
reverting them - i8042 may interact in funny ways with embedded
controller since it is usually the same piece of firmware.

I assume it works fine in 3.3, right?

Thanks.

-- 
Dmitry
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