Re: USB-managed UPS disconnects periodically with error "frame counter not updating; disabled"

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On Sat, 14 Mar 2015, Louis Sautier wrote:

> Hello, I am running into an issue with my USB UPS. The symptoms are
> exactly the same as the ones described by this user:
> http://comments.gmane.org/gmane.comp.monitoring.nut.user/8888
> I'll still describe what I experience: my UPS stops responding
> periodically (as in approximately once or twice a day but it seems to
> vary a lot). Running upsc returns "Error: Data stale"
> The kernel logs contain the following lines:
> [686576.884561] ohci-pci 0000:00:13.0: frame counter not updating; disabled
> [686576.884564] ohci-pci 0000:00:13.0: HC died; cleaning up
> [686576.884611] usb 5-2: USB disconnect, device number 2
> Unplugging and plugging the UPS again does nothing. I managed to get
> it working again by unbinding and binding it:
> echo 0000:00:13.0 | tee /sys/bus/pci/drivers/ohci-pci/unbind
> /sys/bus/pci/drivers/ohci-pci/bind
> Nut's developer seems to think that this might be a kernel issue so I
> thought I would ask for advice here.
> The UPS is the only device connected to the bus:
> $ lsusb -s 05:
> Bus 005 Device 002: ID 0463:ffff MGE UPS Systems UPS
> Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
> I am running an x86_64 3.19.0-aufs kernel on an AMD FX(tm)-8320, nut
> 2.7.2, libusb 1.0.19 and libusb-compat 0.1.5 (I don't know which of
> the two is actually used).
> I attached my kernel config, let me know if you need anything else.

Those kernel log messages indicate that your USB controller has a
hardware problem.  Like the message says, the controller has stopped
working.  When you unbind the controller and rebind it, that performs a
reset and the controller starts working again.

If you want, you could avoid using the bad controller by getting a 
USB-2.0 hub and plugging the UPS into it.

Alan Stern

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