I've got a question to ask you

[Pekka Paalanen]

On Tue, 28 Aug 2018 12:00:56 +0800
binnan hao <haobinnan at gmail.com> wrote:

> I'm using Busybox root file system, and the default setting on Busybox is
> mdev instead of udev.

Hi,

whatever you have or do, you need to set up the device attributes the
way libinput expects them to be to recognize an input device as a
keyboard or a mouse or other.

You can look into libinput source code to see how it queries the
devices through the libudev API, and then figure out how to make mdev
return the data libinput expects. Hopefully you find a way to at least
hardcode your input device types with mdev - a proper system with udev
uses some tools that try to infer the device type from the kernel evdev
features it supports automatically, AFAIU.

For more information, see:
https://wayland.freedesktop.org/libinput/doc/latest/device-configuration-via-udev.html

I have no idea what mdev is or how it works, so I cannot say if that is
possible. Please, let us know how it goes, so that we have something to
say to the next person asking similar questions.


Thanks,
pq

> 박성진 <sj76.park at samsung.com> 于2018年8月28日周二 上午11:58写道：
> 
> > Hi,
> >
> > as weston creates libinput udev context by default, you'd better to
> > prepare udev daemon for it.
> >
> > Otherwise, you can create your own fbdev backend using
> > libinput_path_create_context() / libinput_path_add_device().
> >
> >
> >
> > Best regards,
> >
> > Sung-Jin Park
> >
> >
> >
> > --------- *Original Message* ---------
> >
> > *Sender* : binnan hao <haobinnan at gmail.com>
> >
> > *Date* : 2018-08-28 12:35 (GMT+9)
> >
> > *Title* : I've got a question to ask you
> >
> >
> > I've got a question to ask you. The Linux system I'm using is built on my
> > own (Kernel+Busybox), and it does not contain other extra things. Now I
> > want to use weston(fbdev-backend.so), but the keyboard and mouse do not
> > work and log gives following message:
> >
> > warning: no input devices on entering weston. possible causes:
> > - no permissions to read /dev/input/event*
> > - seats misconfigured (weston backend option 'seat', udev device property
> > ID_SEAT)
> >
> > I have root permission and device files can be found in path /dev/input/.
> > I do not want to add anything else, as that may lead to a very large size
> > system. Do you know any method to let weston use keyboard and mouse on my
> > system?
> >
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