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View Full Version : Getting a new USB hub working


sidebrnz
2009-02-24, 05:58 PM CST
I've just bought a new four-port USB hub, but it's not recognized. I've emailed the OEM, but considering that it's Linux, I'm not holding my breath. The appropriate part of dmesg follows:

usb 2-2: new full speed USB device using uhci_hcd and address 11
usb 2-2: device descriptor read/64, error -71
usb 2-2: device descriptor read/64, error -71
usb 2-2: new full speed USB device using uhci_hcd and address 12
usb 2-2: device descriptor read/64, error -71
usb 2-2: device descriptor read/64, error -71
usb 2-2: new full speed USB device using uhci_hcd and address 13
usb 2-2: device not accepting address 13, error -71
usb 2-2: new full speed USB device using uhci_hcd and address 14
usb 2-2: device not accepting address 14, error -71
hub 2-0:1.0: unable to enumerate USB device on port 2

FWIW, a thumb drive plugged directly into that port works, and the light on the hub comes on when it's connected.

darkshadow
2009-02-25, 06:27 AM CST
and when you connect an USB device into the hub it doesn't work ? and what does lsusb shows you ? if it doesn't work so I guess that your hub is broken sorry

Fedora (http://www.linux-archive.org/fedora-development/)

sidebrnz
2009-02-25, 11:26 AM CST
This is downright weird: I have an "extension cord" that I've been using to get access for one USB device. If I plug the hub into that, it works; if I try to plug it directly into the computer, it doesn't, and it doesn't matter which port I use. However, lusb does show it, even when it's not responding. Probably a flaky hub, so that's the answer.

[joe@khorlia ~]$ lsusb
Bus 001 Device 030: ID 04b8:0838 Seiko Epson Corp. CX7300/CX7400/DX7400
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 015: ID 046d:c404 Logitech, Inc. TrackMan Wheel
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 002 Device 028: ID 03eb:0902 Atmel Corp. 4-Port Hub <----------------
Bus 002 Device 025: ID 046e:5542 Behavior Tech. Computer Corp.
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
[joe@khorlia ~]$