linux-kernel - Re: [4.12 regression] Thinkpad X250 Touchpad and Trackpoint not recognized anymore; commit e839ffa: "Input: synaptics

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Date:   Fri, 19 May 2017 13:23:03 -0700
From:   Dmitry Torokhov <dmitry.torokhov@...il.com>
To:     Pascal Wichmann <pascal.wichmann@...w.de>
Cc:     Benjamin Tissoires <benjamin.tissoires@...hat.com>,
        linux-input@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [4.12 regression] Thinkpad X250 Touchpad and Trackpoint not
 recognized anymore; commit e839ffa: "Input: synaptics - add support for
 Intertouch devices"

On Fri, May 19, 2017 at 09:37:32PM +0200, Pascal Wichmann wrote:
> > Do you have i801_smbus driver enabled and loaded?
> 
> I have the following line in my kernel configuration:
> 
> > CONFIG_I2C_I801=m
> 
> Following i2c/smbus-related modules are loaded:
> 
> > lsmod | grep i2c
>                                                                 :(
> > i2c_smbus              16384  0
> > i2c_i801               24576  0
> > i2c_algo_bit           16384  1 i915
> 
> lshw has the following output specifying i801_smbus as driver:
> 
> > *-serial
> >      description: SMBus
> >      product: Wildcat Point-LP SMBus Controller
> >      vendor: Intel Corporation
> >      physical id: 1f.3
> >      bus info: pci@...0:00:1f.3
> >      version: 03
> >      width: 64 bits
> >      clock: 33MHz
> >      configuration: driver=i801_smbus latency=0
> >      resources: irq:18 memory:f1238000-f12380ff ioport:efa0(size=32)

Hmm, what about rmi_core and rmi_smbus? It might be quicker if you send
your dmesg, .config and lsmod...

Thanks.

-- 
Dmitry