Citeren Charles Lepple <clep...@gmail.com>:

If I run it under strace, the ioctls on the /dev/bus/usb file descriptor
preceeding each "operation not permitted" error return 0, not an error code
such as EPERM.

That seems strange. Would you please compress and send the strace output
(without "-u root")?

Attached.

Looks like Ubuntu fixed 2.4.3 here:
https://bugs.launchpad.net/ubuntu/+source/nut/+bug/572262

That was committed to NUT here:

http://trac.networkupstools.org/projects/nut/changeset/2407

This breaks reading larger reports, so it was reverted:

http://trac.networkupstools.org/projects/nut/changeset/2719

This patch (committed after 2.6.0 was released) claims to restore
2.4.1 behavior:

http://trac.networkupstools.org/projects/nut/changeset/2893

All of the above are irrelevant here. The driver runs fine when started as root, so this must be a permissions problem.

Best regards, Arjen
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