[Nut-upsdev] megatec_usb not detecting UPS

[Arnaud Quette]

2008/6/16 Jan Bakuwel <jan.bakuwel at gmail.com>:

> Hi Arnaud,
>
> > possibly due to the NUT version difference.
> > You should be running a patched 2.2.1 on HH and a 2.0.4 on Etch.
> > iirc, there was a fix for your problem. So your best chance is to get
> > a backport for Etch...
>
> I have compiled the version of megatec_usb (1.5.9) that comes with the
> source of nut 2.2.1 from Debian Testing on Etch... (driver only;
> backporting nut 2.2.1 looked a bit daunting not knowing the code (it
> didn't compile)). The megatec_usb driver did compile & run OK though on
> Etch (apart from timing out rather quickly on USB messages). Ubuntu
> Hardy also uses the same version driver (1.5.9)... the driver works fine
> on Hardy.
>
> I have a feeling might be USB subsystem related? Guess the USB subsystem
> from Etch is different from the one on Hardy... would appreciate some
> help in further debugging the issue.
>

our USB drivers are based upon libusb, which in turn is based upon the
usbdevfs.
so, you should also compare the version of these.
otherwise, "export  USB_DEBUG=3" will help in debugging the libusb side.

Arnaud
-- 
Linux / Unix Expert R&D - MGE Office Protection Systems -
http://www.mgeops.com
Network UPS Tools (NUT) Project Leader - http://www.networkupstools.org/
Debian Developer - http://people.debian.org/~aquette/
Free Software Developer - http://arnaud.quette.free.fr/
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