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Usb hub issues

ejs
Aspiring Hero
Posts: 5,442
Thanks: 631
Fixes: 25
Registered: ‎10-06-2010

Re: Usb hub issues

Yes, well, hardware is buggy, especially cheap things like USB hubs. Even if things do basically work OK, like my hub I described, that doesn't mean it works 100% correctly according to how the USB standards say things are supposed to work. My hub is even supposed to be USB Hi-Speed certified, but then I suppose anyone could put that logo on the box.
I still think there's probably some clues as to why it doesn't work in the kernel log messages (readable with dmesg), or comparing the detailed output from lsusb -v might show something.
HairyMcbiker
All Star
Posts: 6,792
Thanks: 266
Fixes: 21
Registered: ‎16-02-2009

Re: Usb hub issues

OK plugged in to the pi-zero
Quote
pi@raspberrypi:~ $ lsusb
Bus 001 Device 004: ID 0bda:0179 Realtek Semiconductor Corp.
Bus 001 Device 003: ID 1a40:0101 Terminus Technology Inc. 4-Port HUB
Bus 001 Device 002: ID 1a40:0101 Terminus Technology Inc. 4-Port HUB
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

unplugged
Quote
pi@raspberrypi:~ $ lsusb
Bus 001 Device 004: ID 0bda:0179 Realtek Semiconductor Corp.
Bus 001 Device 003: ID 1a40:0101 Terminus Technology Inc. 4-Port HUB
Bus 001 Device 002: ID 1a40:0101 Terminus Technology Inc. 4-Port HUB
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

So not seen AT ALL. OK it is going through another hub but I need a hub connected to get wifi.
Got another hub today, and it works fine on the zero.
Quote
pi@raspberrypi:~ $ lsusb
Bus 001 Device 004: ID 0bda:0179 Realtek Semiconductor Corp.
Bus 001 Device 010: ID 090c:1000 Silicon Motion, Inc. - Taiwan (formerly Feiya Technology Corp.) Flash Drive
Bus 001 Device 009: ID 05e3:0606 Genesys Logic, Inc. USB 2.0 Hub / D-Link DUB-H4 USB 2.0 Hub

The usb flash drive was plugged in to the hub, plugged into the working hub.
Got a refund of the seller since the hub didn't work on the pi, so am happy with the new hub.