Gentoo Archives: gentoo-user

From: Grant <emailgrant@×××××.com>
To: gentoo-user@l.g.o
Subject: Re: [gentoo-user] Which USB device on which controller?
Date: Fri, 27 Feb 2009 16:53:21
Message-Id: 49bf44f10902270853y72730033t6552f5d15081a177@mail.gmail.com
In Reply to: Re: [gentoo-user] Which USB device on which controller? by Alan McKinnon
1 >> You seem to be right on here Dale.  usbview showed my printer
2 >> connected to the 2.0 controller and a webcam connected to the 1.1
3 >> controller, so I unplugged the printer and plugged the webcam into
4 >> it's slot and it still showed up under 1.1.  So there doesn't appear
5 >> to be any slot/controller correlation.
6 >
7 > That probably means the controller is running in 1.1 mode
8 > 2.0 controllers can do both
9 >
10 > To find out what the hardware is, look for E|U|OHCI and decode that
11
12 According to lspci -v, I have one EHCI (2.0) and one OHCI (1.1)
13 controller. usbview has output like this:
14
15 OHCI
16 - Philips
17 - Philips
18 EHCI
19 - Brother
20
21 If I unplug the Brother printer and plug a Philips webcam into the
22 same slot the Brother was plugged into, usbview shows this:
23
24 OHCI
25 - Philips
26 - Philips
27 EHCI
28
29 So it seems like the slots do not correlate to particular controllers.
30
31 - Grant