From: ilmari@ilmari.org (Dagfinn Ilmari Mannsåker)
To: Lennart Sorensen <lsorense@csclub.uwaterloo.ca>
Cc: Alan Stern <stern@rowland.harvard.edu>,
Andrew Morton <akpm@osdl.org>,
David Liontooth <liontooth@cogweb.net>,
linux-kernel@vger.kernel.org,
linux-usb-devel@lists.sourceforge.net
Subject: Re: USB devices fail unnecessarily on unpowered hubs
Date: Thu, 01 Jun 2006 23:39:15 +0200 [thread overview]
Message-ID: <d8jodxcmu7w.fsf@ritchie.ping.uio.no> (raw)
In-Reply-To: <20060601152344.GB23746@csclub.uwaterloo.ca> (Lennart Sorensen's message of "Thu, 1 Jun 2006 11:23:44 -0400")
Lennart Sorensen <lsorense@csclub.uwaterloo.ca> writes:
> A scanner certainly uses more power with the scanner light on than with
> it off, and it starts out off until it is in use on most scanners. Of
> course I have never seen a usb powered scanner, so it doesn't seem to
> matter.
Oh, they've been around for years. The CanoScan LiDE 25 is an example:
<http://www.usa.canon.com/consumer/controller?act=ModelTechSpecsAct&fcategoryid=119&modelid=11463>
--
ilmari
"A disappointingly low fraction of the human race is,
at any given time, on fire." - Stig Sandbeck Mathisen
next prev parent reply other threads:[~2006-06-01 21:39 UTC|newest]
Thread overview: 45+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-06-01 9:18 USB devices fail unnecessarily on unpowered hubs David Liontooth
2006-05-30 20:01 ` Pavel Machek
2006-06-03 9:29 ` Oliver Neukum
2006-06-05 14:32 ` [linux-usb-devel] " David Brownell
2006-06-06 7:43 ` Oliver Neukum
2006-06-08 7:01 ` Pavel Machek
2006-06-08 8:34 ` [PATCH] limit power budget on spitz Pavel Machek
2006-06-08 8:50 ` Richard Purdie
2006-06-08 9:02 ` Pavel Machek
2006-06-08 9:22 ` Richard Purdie
2006-06-08 17:09 ` Russell King
2006-06-08 18:26 ` David Brownell
2006-06-08 20:06 ` Richard Purdie
2006-06-08 20:38 ` [linux-usb-devel] " David Brownell
2006-06-08 21:22 ` Richard Purdie
2006-06-08 21:40 ` David Brownell
2006-06-08 21:49 ` Richard Purdie
2006-06-08 23:44 ` David Brownell
2006-06-09 1:25 ` Nicolas Pitre
2006-06-09 2:03 ` David Brownell
2006-06-09 2:34 ` Nicolas Pitre
2006-06-01 10:01 ` USB devices fail unnecessarily on unpowered hubs Andrew Morton
2006-06-01 11:42 ` Daniel Drake
2006-06-01 14:58 ` Alan Stern
2006-06-01 15:09 ` linux-os (Dick Johnson)
2006-06-01 15:23 ` Lennart Sorensen
2006-06-01 21:39 ` Dagfinn Ilmari Mannsåker [this message]
2006-06-01 15:53 ` Oliver Neukum
2006-06-01 17:24 ` linux-os (Dick Johnson)
2006-06-01 16:57 ` Alan Stern
2006-06-01 16:43 ` [linux-usb-devel] " Greg KH
2006-06-02 0:03 ` David Liontooth
2006-06-02 1:53 ` [linux-usb-devel] " David Brownell
2006-06-02 7:12 ` Oliver Neukum
2006-06-02 15:11 ` Alan Stern
2006-06-02 19:49 ` David Liontooth
2006-06-01 16:59 ` Andrew Morton
2006-06-01 17:08 ` Alan Stern
2006-06-01 17:34 ` Mark Lord
2006-06-01 17:47 ` Alan Stern
[not found] <6iWP5-2gj-71@gated-at.bofh.it>
[not found] ` <6iX82-2UJ-3@gated-at.bofh.it>
2006-06-01 23:35 ` Robert Hancock
2006-06-01 23:46 ` Randy.Dunlap
[not found] <6iYGP-5hv-3@gated-at.bofh.it>
[not found] ` <6iYQx-5Jc-7@gated-at.bofh.it>
2006-06-01 23:37 ` Robert Hancock
-- strict thread matches above, loose matches on Subject: below --
2006-06-05 11:07 Lee Dowling
[not found] <6kl8h-1Uf-15@gated-at.bofh.it>
2006-06-07 0:51 ` Robert Hancock
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