USB Hotplug Quit

[D-cat]

OpenSuSE 11.3/KDE4 32-bit
Kernel 2.6.34.7-0.7-desktop
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It's been a while but I just hit a brick wall.
Well, this has been building for a week or so, I can't figure out what's causing it. I thought there was a sudden conflich with the bluetooth dongle, since that one piece of hardware is not listed right from boot (sometimes has a dmesg error related to loading the module), but I find now this is not the case. Today I ran the full update to the current kernel hoping to fix the problem, but to no avail (caused some interesting issued with the video (intel 945) which I ironed out).

Symptom: With the exception of the bluetooth, all devices hooked up to the USB ports at boot are recognized and usable. No device that I plug in after booting is recognized, period. lsusb output does not change.

Plugging in a USB flash drive produces no output for dmesg.
Plugging in the bluetooth causes the following output:

[ 1748.107049] hub 5-0:1.0: unable to enumerate USB device on port 2
[ 1749.059031] hub 5-0:1.0: unable to enumerate USB device on port 2
[ 1749.265019] usb 5-2: new low speed USB device using uhci_hcd and address 9
[ 1749.379020] usb 5-2: device descriptor read/64, error -71
[ 1749.594079] usb 5-2: device descriptor read/64, error -71
[ 1749.797022] usb 5-2: new low speed USB device using uhci_hcd and address 10
[ 1749.911017] usb 5-2: device descriptor read/64, error -71
[ 1750.126020] usb 5-2: device descriptor read/64, error -71
[ 1750.279062] hub 5-0:1.0: unable to enumerate USB device on port 2

Plugging in a usb wireless mouse reciever caused the following output, but only on the first insert:

[  976.607029] usb 5-2: new low speed USB device using uhci_hcd and address 2
[  976.721028] usb 5-2: device descriptor read/64, error -71
[  976.935014] usb 5-2: device descriptor read/64, error -71
[  977.138016] usb 5-2: new low speed USB device using uhci_hcd and address 3
[  977.251014] usb 5-2: device descriptor read/64, error -71
[  977.465022] usb 5-2: device descriptor read/64, error -71
[  977.668023] usb 5-2: new low speed USB device using uhci_hcd and address 4
[  978.076040] usb 5-2: device not accepting address 4, error -71
[  978.178023] usb 5-2: new low speed USB device using uhci_hcd and address 5
[  978.586022] usb 5-2: device not accepting address 5, error -71
[  978.586038] hub 5-0:1.0: unable to enumerate USB device on port 2

Present (and apparently static) lsusb output:

Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 003: ID 04a9:1727 Canon, Inc. MX300 ser
Bus 001 Device 005: ID 054c:036d Sony Corp. 
Bus 001 Device 006: ID 058f:6377 Alcor Micro Corp. Multimedia Card Reader
Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub

I'm ignoring the bluetooth issue at the moment since I have read that this might be a permissions (group) issue with a previous kernel upgrade, but otherwise this has me completely stumped. All these devices and hotplugging worked perfectly fine last week. I first noticed it about a week ago when I suddenly could no longer charge my phone via the USB port, and on further inspection, I found nothing worked that was plugged in after boot. 11.3 changed a whole bunch of things (like uchi appears to now be built into the kernel and can't be unloaded, doesn't even appear in lsmod) which makes diagnosing a cause a/o finding a solution that much more difficult for me. Anything known to cause USB hotplugging to quit in 11.3? Suggestions to fix?

[reed9]

Well, it seems a little weird, but I've found a number of people with similar dmesg output and problems claiming that literally unplugging your computer (and removing the battery if it's a laptop) for a few minutes, then reconnecting, seems it resolve the issue.

Two examples:
[SOLVED] USB 2/3 device descriptor read64, error -110 - Ubuntu Forums
Linux Mint Forums • View topic - [Solved] USB mouse suddenly...doesn't work

(These happen to be Ubuntu and Mint, but doesn't seem like it would be distro specific.)

[D-cat]

Now that you mention it, the problem did start (or at least I noticed it) after my cat managed to unplug the running system. I'll have to give this a try. Thanks.

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Update: unreal, it worked. USB is now behaving normally, bluetooth included. Thank you.