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Subject: Re: USB problems on PC Engines APU2C4
To: Stefan Bethke <stb@lassitu.de>, freebsd-usb@freebsd.org
References: <CF83933C-DECF-4B93-A4F3-3B4C5271F6BB@lassitu.de>
 <43997AE2-089D-48AE-9285-9B3C6864DC9D@lassitu.de>
From: Hans Petter Selasky <hps@selasky.org>
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Date: Sat, 14 Jul 2018 11:01:31 +0200
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On 07/13/18 22:57, Stefan Bethke wrote:
> 22:51:32.351126 usbus0.2 DONE-BULK-EP=00000002,SPD=HIGH,NFR=0,SLEN=0,IVAL=0,ERR=TIMEOUT
> 22:51:32.858070 usbus0.2 SUBM-CTRL-EP=00000000,SPD=HIGH,NFR=1,SLEN=8,IVAL=500

The timeout might indicate an interrupt problem at the host controller.

There are some EHCI quirks you can try:

hw.usb.ehci.lostintrbug: 0
hw.usb.ehci.iaadbug: 0

--HPS