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List:       linux-input
Subject:    Re: 4.18 regression: composite usb mouse/keyboard went mad
From:       Harald Dunkel <harri () afaics ! de>
Date:       2018-11-02 16:07:07
Message-ID: 7063d4ff-6b98-c8aa-081f-11d68e27982c () afaics ! de
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Hi folks,

I am desperate. :-(

On 8/19/18 3:35 PM, Harald Dunkel wrote:
> Hi folks,
> 
> since 4.18 my composite mouse/keyboard doesn't work correctly anymore.
> Usually the device can switch between keyboard and (gyroscopic) mouse
> mode, but with the new kernel the mouse movements seem to generate
> cursor up/down events in parallel, regardless of the mode the mouse
> is in.
> 
> vendor/product id is 2389/00a8.
> 
> 
> For 4.18.3 the logfile contains
> 
> 
> Aug 19 13:07:08 porky kernel: [ 7216.276603] input: Usb Composite Device Usb \
> Composite Device Mouse as \
>                 /devices/pci0000:00/0000:00:14.0/usb2/2-7/2-7:1.0/0003:2389:00A8.000C/input/input35
>                 
> Aug 19 13:07:08 porky kernel: [ 7216.328826] input: Usb Composite Device Usb \
> Composite Device Consumer Control as \
>                 /devices/pci0000:00/0000:00:14.0/usb2/2-7/2-7:1.0/0003:2389:00A8.000C/input/input36
>                 
> Aug 19 13:07:08 porky kernel: [ 7216.328916] input: Usb Composite Device Usb \
> Composite Device System Control as \
>                 /devices/pci0000:00/0000:00:14.0/usb2/2-7/2-7:1.0/0003:2389:00A8.000C/input/input37
>                 
> Aug 19 13:07:08 porky kernel: [ 7216.329006] hid-generic 0003:2389:00A8.000C: \
> input,hidraw3: USB HID v2.00 Mouse [Usb Composite Device Usb Composite Device] on \
>                 usb-0000:00:14.0-7/input0
> Aug 19 13:07:08 porky kernel: [ 7216.330794] input: Usb Composite Device Usb \
> Composite Device as \
>                 /devices/pci0000:00/0000:00:14.0/usb2/2-7/2-7:1.1/0003:2389:00A8.000D/input/input38
>                 
> Aug 19 13:07:08 porky kernel: [ 7216.382988] hid-generic 0003:2389:00A8.000D: \
> input,hidraw4: USB HID v2.00 Keyboard [Usb Composite Device Usb Composite Device] \
> on usb-0000:00:14.0-7/input1 

The kernel sources don't mention a vendor/product id 2389/00a8, so how
comes the device is recognized as a "Composite Device Mouse" and "Composite
Device Consumer Control"? Is there some way to tell the kernel to use a
better driver, maybe the same driver as for 4.17?


Every helpful comment is highly appreciated

Harri


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