[Bug 54273] Re: USB device not accepting address: error -110

[Ralf Nieuwenhuijsen]

iulian is right.

This is all related to POWER.

I had the same problem with a powered USB hub.
It didn't work (and made lsusb hang!) and gave the same -110 error in dmesg

Until I removed the power from the usb-hub and plugged it in again.
At that point the usb-hub still worked for my mice, (but not my external HD, because that required more power).
Then I could turn the power on and the hub kept working and the drive also started to work.

I've had a similar problem with my printer, which made Ubuntu not boot at all in the past, if it was turned on when booting.
But it wasn't until I had this issue with the hub (that works both with and without power) than I could see that enumaration fails on powered USB devices if they were powered on during boot.

SO, dear Kernel developers (that are no longer reading this bug, from what I gather) .. the issue is:
USB devices that are externally powered, block usb enumeration, if you attach them with the power plugged in.

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USB device not accepting address: error -110
https://bugs.launchpad.net/bugs/54273
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