Re: fido(4): YubiKey stops responding after the device node is opened and closed a few times

On Thu, 30 Jul 2026 20:03:28 +0200,
"Theo de Raadt" <[email protected]> wrote:
> 
> I have situations where this happens, and other situations where this does not
> happen.  Multiple machines with their own keys.
> 
> I have not figured out if it is the usb layer on the machine, or if the
> problem follows a specific key when moved to a different machine (which does
> not have a problem with the key it currently uses).
> 
> If we discover the problem follos the usb bus, that would be interesting.
> 
> If the problem follows the key, then that is interesting in a different way.
> 

Have you tried to detach and attach again the key? I mean physically from
USB port.

I had seen that issue recently more often, and detach-attach helps here.

-- 
wbr, Kirill