Date: Sat, 21 Aug 2010 12:26:21 -0400 From: indulekha <thebeelzebubtrigger@gmail.com> To: Hans Petter Selasky <hselasky@c2i.net> Cc: freebsd-usb@freebsd.org Subject: Re: USB HDD needs replugging? Message-ID: <1282407981.2000.26.camel@satcidananda> In-Reply-To: <201008211756.26486.hselasky@c2i.net> References: <20100821120316.GA3352@satcidananda.16x108.merseine.nu> <201008211718.21378.hselasky@c2i.net> <1282405038.2000.2.camel@satcidananda> <201008211756.26486.hselasky@c2i.net>
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On Sat, 2010-08-21 at 17:56 +0200, Hans Petter Selasky wrote: > On Saturday 21 August 2010 17:37:18 indulekha wrote: > > On Sat, 2010-08-21 at 17:18 +0200, Hans Petter Selasky wrote: > > > > Yes, there is a dmesg error: > > > >=20 > > > > ugen4.5: <(null)> at usbus4 (disconnected) > > > > uhub_reattach_port:435: could not allocate new device! > > > >=20 > > > > But then just a few lines later, dmesg says: > > > >=20 > > > > ugen4.5: <Seagate> at usbus4 > > > > umass1: <Seagate Portable, class 0/0, rev 2.00/1.30, addr 5> on usb= us4 > > > > umass1: SCSI over Bulk-Only; quirks =3D 0x0000 > > > > umass1:3:1:-1: Attached to scbus3 > > > > da1 at umass-sim1 bus 1 target 0 lun 0 > > > > da1: <Seagate Portable 0130> Fixed Direct Access SCSI-4 device > > > > da1: 40.000MB/s transfers > > > > da1: 305245MB (625142448 512 byte sectors: 255H 63S/T 38913C) > > > >=20 > > > > I'm thinking there's some sort of power management scheme in the > > > > Seagate that umass has trouble accommodating. > > >=20 > > > Does your USB device have a separate power supply? > > >=20 > > > --HPS > >=20 > > No, it's one of those pocket-sized HDDs. > > This one, actually: > > http://www.amazon.com/gp/product/B001SJZV10/ref=3Doss_product >=20 > Hi, >=20 > Try to use an external self-powered USB HUB and see if the problem is the= =20 > same. >=20 > --PS Sorry, don't have one of those.=20 Also, I really haven't been able to find much online about how to enable quirks, whether the quirks listed in the ouput of usbconfig are already in effect or just available for implementation, if there's some formula for creating them, whether any should be avoided, what is the exact command to enable or disable quirks, etc.=20 It's surprising how terribly scarce this knowledge seems to be. =20 All I know is spending Saturday morning screwing around with this was=20 not my plan. :) I'm not trying to become an expert on USB, just thought someone somewhere would see my post and say "oh yeah, just modify line n of file foo to *this* and off you go". Instead this is looking more like an adventure requiring hours and hours of reading I just don't have time for right now. But thanks for taking the time to try to help, I'm just not knowledgeable enough to make use of it yet. :)=20 --=20 caveat utilitor, Indi
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