From: James Courtier-Dutton <James@superbug.demon.co.uk>
To: Dominik Wezel <dio@qwasartech.com>
Cc: linux-kernel@vger.kernel.org
Subject: Re: USB EHCI Problem with Low Speed Devices on kernel 2.6.11+
Date: Mon, 29 Aug 2005 00:16:50 +0100 [thread overview]
Message-ID: <431245E2.5010308@superbug.demon.co.uk> (raw)
In-Reply-To: <43106DEF.3040206@qwasartech.com>
Dominik Wezel wrote:
> Problem
> =======
> When turning on the laptop and during POST and GrUB loading, all ports
> on the hub are enabled. During the USB initialization phase, when the
> hub is detected, shortly all ports become disabled, then turn on again
> (uhci_hcd detects the lo-speed ports). Upon initialization of ehci_hcd
> however, the ports are disconnected again (for good):
>
Use uhci_hcd or ehci_hcd, but never both at the same time.
ehci_hcd will work with all lo-speed ports, so uhci_hcd is then no needed.
James
next prev parent reply other threads:[~2005-08-28 23:16 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2005-08-27 13:43 USB EHCI Problem with Low Speed Devices on kernel 2.6.11+ Dominik Wezel
2005-08-28 23:16 ` James Courtier-Dutton [this message]
2005-08-29 5:28 ` Jan De Luyck
2005-08-29 14:39 ` Randy.Dunlap
2005-08-29 7:53 ` Oliver Neukum
[not found] <mailman.1125150481.18996.linux-kernel2news@redhat.com>
2005-08-27 17:21 ` Pete Zaitcev
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