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mvp / uhubctl

uhubctl - USB hub per-port power control
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Plugable USB2-HUB10S not compatible with uhubctl #181

Closed tony-wallace closed 4 years ago

tony-wallace commented 4 years ago

The README.md says that the Plugable USB2-HUB10S 10-port USB 2 Hub is compatible. I bought one used from ebay. It does not seem to be compatible on my Ubuntu 18.04 Dell Precision 5820

Incidentally, uhubctl does report some internal USB hubs/ports on this Dell, and lsusb -v agrees those hubs claim per-port power switching. Uhubctl reports successfully turning power on and off on those ports (though it is confused about which Hub I selected- it always hits both Hubs). However, I never did get the power to actually turn off. I chalked that up to incompatible hardware and sent away to ebay for the Plugable USB2-HUB10S because I wanted a 10-port USB 2.0 hub.

It looks like this Plugable USB2-HUB10S is functional in other respects.

mvp commented 4 years ago

Thanks for your detailed report, I have removed this hub from supported list in a6cdc3d.

Uhubctl reports successfully turning power on and off on those ports (though it is confused about which Hub I selected- it always hits both Hubs)

If your hubs are USB3, this is expected - uhubctl tries hard to control power for both USB3 hub and its USB2 compatibility counterpart hub unless you disable this with -e - this is required to actually turn off power for USB3. If your hubs are USB2 only, this should never happen - I would like to see full output of sudo uhubctl and uhubctl version (please use 2.1.0 or later).

There is certainly possibility that your onboard hubs don't support VBUS despite claiming support, and this is manufacturer's fault :-(

tony-wallace commented 4 years ago

Thanks for the reply. FYI, I re-ran the lsusb and uhubctl on the same workstation, with and without the Plugable USB2-HUB10S connected.

I think you were right- up to now, I thought the two ports on the front of the Dell were USB2. Now I think that they are USB3, and something tricked me into thinking they were USB2.

tony-wallace commented 4 years ago

Still have faith in uhubctl. Based on README file change history, I just ordered a rev-D2 DLink DUB-H7 from ebay. Hope it is a rev-D2 anyway! It said so on the label shown in the pic.

mvp commented 4 years ago

Please report if D-Link DUB-H7 rev D is working for you or not. If it doesn't, older D-Link DUB-H7 rev A (silver) is definitely working perfectly - I am using it myself, and it seems to be relatively easy to find on eBay right now under $10.

tony-wallace commented 4 years ago

My D-Link DUB-H7 rev D2 definitely works with uhubctl. Cheers! FYI, Here's a gist with the lsusb info https://gist.github.com/tony-wallace/c4915ae262aa02bfa0688333d75cbc3e