[Bug 262882] USB disconnects repeatedly, losing all attached devices on that USB hub
Date: Fri, 27 Jun 2025 09:47:00 UTC
https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=262882
Jan Biedermann <jan@isomorfeus.com> changed:
What |Removed |Added
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CC| |jan@isomorfeus.com
--- Comment #132 from Jan Biedermann <jan@isomorfeus.com> ---
I have the same problem.
When connecting a specific device to a port of a XHCI controller, the
controller driver starts resetting the controller in a loop. This happens with
14.2 and 14.3.
After init of the device the communication with the device suddenly stops,
while the bus stays functional, as other devices keep communicating. It looks
like after a short timeout, the reset is triggered.
I could not find errors in debug output or on the bus, just the device stopping
to communicate. It looks like a lock up in the USB stack.
With CURRENT, when connecting the device, the reset happens only once.
Ill try to get some more debugging info with CURRENT in the next days.
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