On Tuesday 27 July 2010 14:20:04 Martin Matuska wrote:
> The following reply was made to PR usb/125736; it has been noted by GNATS.
> 
> From: Martin Matuska <m...@freebsd.org>
> To: bug-follo...@freebsd.org, ad...@lissyara.su
> Cc:
> Subject: Re: usb/125736: [ukbd] [hang] system hangs after AT keyboard
> detect if ukbd loaded as a module
> Date: Tue, 27 Jul 2010 14:13:10 +0200
> 
>   I can confirm this and narrow it down a little:
> 
>  - this happens only if ukbd is already present in the kernel (e.g.
>  GENERIC) and ukbd.ko gets loaded at boot
>  - I can reproduce it on all my FreeBSD machines of different versions
>  with GENERIC or other kernel containing ukbd
>  - reproducible in virtualbox
> 
>  Steps to reproduce:
>  - use a GENERIC kernel
>  - escape to loader prompt on boot, type "load ukbd.ko"
>  - type "boot" or "boot -v" for verbose prompt
> 
>  Boot hangs at keyboard detection.

Could you try to add

MODULE_VERSION(ukbd, 1);

to sys/dev/usb/input/ukbd.c

?

--HPS
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