Re: usb mouse not work on boot

On Sat, May 18, 2024, 9:22 AM Oleksandr Kryvulia <shuriku@shurik.kiev.ua>
wrote:

> 18.05.24 16:06, Warner Losh:
>
>
>
> On Sat, May 18, 2024, 6:51 AM Oleksandr Kryvulia <shuriku@shurik.kiev.ua>
> wrote:
>
>> 18.05.24 12:59, Oleksandr Kryvulia:
>>
>> 18.05.24 12:55, Dag-Erling Smørgrav:
>>
>> Oleksandr Kryvulia <shuriku@shurik.kiev.ua> <shuriku@shurik.kiev.ua> writes:
>>
>> Gary Jennejohn <garyj@gmx.de> <garyj@gmx.de> writes:
>>
>> Try adding uhid_load="YES" to your /boot/loader.conf.  With that
>> added the module should be automatically loaded during the kernel
>> boot.
>>
>> As workaround I already have kld_list+="uhid" in /etc/rc.conf.
>>
>> I hope you don't mean that literally, because /etc/rc.conf is a shell
>> script and += is not valid shell syntax.  On the other hand, something
>> like
>>
>> kld_list="${kld_list} uhid"
>>
>> Yes, you are right. I mean
>> sysrc kld_list+="uhid"
>>
>>
>> One more correction. Via kld_list I need load ums(4), loading only
>> uhid(4) does not solve a problem.
>>
>
>
> You don't need to change kld_list. In fact, you should undo any changes
> you've made there. Undo everything in loader.conf you've done.
>
> This is a bug in the boot optimization stuff. Or rather, this exposes a
> long standing bug in the USB code where there's an asymmetry between the
> nomatch events and the bus tree it presents to devctl causing devmatch to
> fail when the nomatch events aren't present on boot.
>
> Just set hw.bus.devctl_nomatch_enabled=1 in /boot/loader.conf and reboot.
> Or update to the change I'm about to make.
>
>
> Thanks for the detailed explanation, Warner. Interesting that on my system
> hw.bus.devctl_nomatch_enabled=1 is set by /etc/rc.d/devmatch but only
> explicit set it in /boot/loader.conf did the trick. That is why I think
> this sysctl don't work in my case.
>

Yea. That's the optimization. We don't start generating events until it is
one. Setting it in the bootloader causes all events to coke through.
Setting it in devmatch turns them on after we run devmatch the first time,
omitting all of the ones generated on boot.

Warner

>