Date: Mon, 24 Aug 2020 17:26:27 +0000 From: "Bjoern A. Zeeb" <bzeeb-lists@lists.zabbadoz.net> To: "bob prohaska" <fbsd@www.zefox.net> Cc: freebsd-arm@freebsd.org, freebsd-current@freebsd.org Subject: Re: Strange USB loop Message-ID: <9E59062A-865E-454C-8D1F-AB42F33EA020@lists.zabbadoz.net> In-Reply-To: <20200824163736.GA9845@www.zefox.net> References: <20200824163736.GA9845@www.zefox.net>
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On 24 Aug 2020, at 16:37, bob prohaska wrote: > After updating to > FreeBSD 13.0-CURRENT (GENERIC) #5 r364475: Mon Aug 24 06:47:29 PDT 2020 > on a Pi3 it was necessary to disconnect the mouse, keyboard and usb-serial > adapter to allow the machine to mount root from USB via a hub. > > Once the machine came back up with root mounted from USB, I tried plugging > the serial adapter, mouse and keyboard back in via the hub. > > The FTDI serial adapater was recognized without trouble, but when the > elderly Dell mouse was connected, a stream of > > uhub_reattach_port: giving up port reset - device vanished > uhub_reattach_port: giving up port reset - device vanished > uhub_reattach_port: giving up port reset - device vanished > uhub_reattach_port: giving up port reset - device vanished > uhub_reattach_port: giving up port reset - device vanished > > began to scroll on both the monitor and console. Unplugging > the mouse made no difference. Plugging the mouse directly > into the Pi's USB port allowed recognition and function, > but the stream of errors persisted. Network access seems > normal. > > It looks almost as if there's some sort of infinite loop > running in the USB software. The need to disconnect mouse > and keyboard to permit mountroot to work isn't new, but > the "giving up port reset" _is_ new at least to me. > > Are there any experiments which might narrow down what's wrong? I hit something like it last weekend and found this one: https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=237666 /bz
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