Lenovo T60 and X60: psmouse serio1: alps: Unknown ALPS touchpad: E7=10 00 64, EC=10 00 64

Lenovo T60 and X60: psmouse serio1: alps: Unknown ALPS touchpad: E7=10 00 64, EC=10 00 64

[Paul Menzel]

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Dear Linux developers,


with at least Linux 3.12, 3.13 and 3.14 the Linux kernel log contains a
message about an unknown ALPS touchpad.

[…]
[    8.793232] psmouse serio1: alps: Unknown ALPS touchpad: E7=10 00 64, EC=10 00 64
[    9.068102] Console: switching to colour frame buffer device 128x48
[    9.072053] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device
[    9.072056] i915 0000:00:02.0: registered panic notifier
[    9.072075] [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0
[    9.073703] hda_intel: probe_mask set to 0x1 for device 17aa:2010
[    9.074158] snd_hda_intel 0000:00:1b.0: irq 47 for MSI/MSI-X
[    9.104435] input: HDA Digital PCBeep as /devices/pci0000:00/0000:00:1b.0/input/input8
[    9.107546] input: HDA Intel Front Headphone as /devices/pci0000:00/0000:00:1b.0/sound/card0/input13
[    9.107678] input: HDA Intel Line Out as /devices/pci0000:00/0000:00:1b.0/sound/card0/input12
[    9.107793] input: HDA Intel Line as /devices/pci0000:00/0000:00:1b.0/sound/card0/input11
[    9.107909] input: HDA Intel Front Mic as /devices/pci0000:00/0000:00:1b.0/sound/card0/input10
[    9.108044] input: HDA Intel Rear Mic as /devices/pci0000:00/0000:00:1b.0/sound/card0/input9
[    9.168843] psmouse serio1: trackpoint: IBM TrackPoint firmware: 0x0e, buttons: 3/3
[    9.189695] input: TPPS/2 IBM TrackPoint as /devices/platform/i8042/serio1/input/input6
[…]

The Lenovo T60 actually has a touchpad, a trackpoint and three buttons,
where the Lenovo X60 only has a trackpoint and three buttons.

Searching the Web with this message, there are also hits for other
laptop models.

Looking at `drivers/input/mouse/alps.c` the values checked there for E7
and EC are not related at all. It’s also interesting that E7 and EC
contain the same values.

Is that the trackpoint device detected later and should therefore be
ignored?


Thanks,

Paul

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Re: Lenovo T60 and X60: psmouse serio1: alps: Unknown ALPS touchpad: E7=10 00 64, EC=10 00 64

[Dmitry Torokhov]

On Sat, Aug 23, 2014 at 12:16:27PM +0200, Paul Menzel wrote:
> Dear Linux developers,
> 
> 
> with at least Linux 3.12, 3.13 and 3.14 the Linux kernel log contains a
> message about an unknown ALPS touchpad.
> 
> […]
> [    8.793232] psmouse serio1: alps: Unknown ALPS touchpad: E7=10 00 64, EC=10 00 64
> [    9.068102] Console: switching to colour frame buffer device 128x48
> [    9.072053] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device
> [    9.072056] i915 0000:00:02.0: registered panic notifier
> [    9.072075] [drm] Initialized i915 1.6.0 20080730 for 0000:00:02.0 on minor 0
> [    9.073703] hda_intel: probe_mask set to 0x1 for device 17aa:2010
> [    9.074158] snd_hda_intel 0000:00:1b.0: irq 47 for MSI/MSI-X
> [    9.104435] input: HDA Digital PCBeep as /devices/pci0000:00/0000:00:1b.0/input/input8
> [    9.107546] input: HDA Intel Front Headphone as /devices/pci0000:00/0000:00:1b.0/sound/card0/input13
> [    9.107678] input: HDA Intel Line Out as /devices/pci0000:00/0000:00:1b.0/sound/card0/input12
> [    9.107793] input: HDA Intel Line as /devices/pci0000:00/0000:00:1b.0/sound/card0/input11
> [    9.107909] input: HDA Intel Front Mic as /devices/pci0000:00/0000:00:1b.0/sound/card0/input10
> [    9.108044] input: HDA Intel Rear Mic as /devices/pci0000:00/0000:00:1b.0/sound/card0/input9
> [    9.168843] psmouse serio1: trackpoint: IBM TrackPoint firmware: 0x0e, buttons: 3/3
> [    9.189695] input: TPPS/2 IBM TrackPoint as /devices/platform/i8042/serio1/input/input6
> […]
> 
> The Lenovo T60 actually has a touchpad, a trackpoint and three buttons,
> where the Lenovo X60 only has a trackpoint and three buttons.
> 
> Searching the Web with this message, there are also hits for other
> laptop models.
> 
> Looking at `drivers/input/mouse/alps.c` the values checked there for E7
> and EC are not related at all. It’s also interesting that E7 and EC
> contain the same values.
> 
> Is that the trackpoint device detected later and should therefore be
> ignored?

Yes. I'll add a patch to suppress this message (or rather turn it to a
debug message) as it confuses users.

Thanks.

-- 
Dmitry
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