Date: Sun, 19 Dec 2021 22:03:47 +1100 From: MJ <mafsys1234@gmail.com> Cc: freebsd-arm@freebsd.org Subject: Re: Dealing with slow USB disks, was: Re: Saving environment variables in u-boot Message-ID: <4910504f-3051-9a95-d8e4-95434042196d@gmail.com> In-Reply-To: <20211219005134.GA12292@www.zefox.net> References: <20211216180704.GA4173@www.zefox.net> <214132DD-A095-4349-BB81-B79CB8CF6B0C@yahoo.com> <20211217013613.GA4452@www.zefox.net> <E2F6D50B-694A-4108-BD84-C85BC96AD832@yahoo.com> <20211218005946.GA7670@www.zefox.net> <5C44D0E6-2FF1-4EEB-B21A-83333D6FCF46@yahoo.com> <9D416106-660F-40BB-98D2-1354B53D2FEF@yahoo.com> <EC6CC83C-BC0A-4A12-866A-9FA24083FF7E@yahoo.com> <20211218223543.GA9484@www.zefox.net> <6105a8a6-e760-2183-72fd-92e5a60aa8df@gmail.com> <20211219005134.GA12292@www.zefox.net>
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On 19/12/2021 11:51 am, bob prohaska wrote: > On Sun, Dec 19, 2021 at 10:56:04AM +1100, MJ wrote: >> >> >> >> My suggestion: Have you tried directly connecting the USB into the RPI4? >> I've had previous run-ins with RPI3B and powered hubs where it seems to be >> very slow to enumerate the hub and therefore the devices attached. >> > > The same disk and enclosure boot without issue on the Pi4, so I've little > doubt it'd work. Forgive me if this was asked/mentioned before, but is the hub USB 2 or 3? I couldn't get a Kingston 128GB SSD to work with a USB to SATA adapter (single usb cable) until I got one of those SATA to USB adapters where the USB has two cables to supply enough power to the drive. This was then connected to a USB 2 Hub. That 2x500mA got it running. I would think a mechanical USB is going to pull a "lot" of power when beginning spin-up, but once rotating should be easily powered by a USB hub. Though this would not explain how it works on RPI4 unless the powered hub you're using is USB2. Apologies if this is just noise.
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