Date: Fri, 17 Jun 2016 21:34:30 -0700 From: Hal Murray <hmurray@megapathdsl.net> To: bob prohaska <fbsd@www.zefox.net> Cc: freebsd-arm@freebsd.org, hmurray@megapathdsl.net Subject: Re: pl2303 lockups on rpi2 Message-ID: <20160618043430.28E93406057@ip-64-139-1-69.sjc.megapath.net> In-Reply-To: Message from bob prohaska <fbsd@www.zefox.net> of "Fri, 17 Jun 2016 19:55:18 PDT." <20160618025517.GA38492@www.zefox.net>
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fbsd@www.zefox.net said: > The problem seems to move with the adapter from one RPI2 to the next, which > suggests a bad adapter, but I'm wondering if it might also be a driver > operating on the edge. How solid is your power? I've seen USB screwups on a Pi 3 running Linux talking to a GPS unit with a PL2303. The symptom was that every day or two, it just stopped working. Unplugging and replugging fixed it. I didn't find a way to fix it from the command line. Somebody suggested that a Pi-? needs more than 4.8 V. My setup was running at 4.8 V. Power seemed like a likely problem, but I didn't track down the source. It could be a handy urban legend. You can get USB cables with heavier gauge power wires. I got some Tronsmart brand. They gave me a bit more than an extra 0.1 V, but I don't have enough hours on them to know if it solved the problem. -- These are my opinions. I hate spam.
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