Hello all.
I'm running Ubuntu 12.04.
Confronted with the problem of non-recognition sensor (progress bar to zero % all the time), a friend of the Alliance Francophone gave me the solution on our forum => http://forum.boinc-af.org / index.php? topic = 4163.msg313231; topicseen # msg313231
Using the script rad_sensor_ubu.sh, edit the file /etc/udev/rules.d/53.radioactive.rules and must be replaced SYSFS by ATTRS.
For explanation, SYSFS is no longer supported since version 174 udev daemon. You have to use ATTRS instead.
And everything works normally.

Thank you.
Bye

There is some misinformation in the above, I think just a typo probably or perhaps that curious French desire to put an S at the end of words but never pronounce it. Actually you must use ATTR not ATTRS.

Also the OP suggested naming the file 53-radioactive.rules. The quote above suggests 53.radioactive.rules. Note the former uses a - in the name, the latter replaces the dash with a dot. The name seems to be important so I will attempt to explain what I have discovered about it in the hopes of sparing others the grief I just went through. Read carefully because I don't explain this very well.

The 53-radioactive.rules name worked for me on Ubuntu 11.10 but since upgrading to Ubuntu 12.10 it appears the detector will not be recognized on my system if I use that filename. According to /etc/udev/rules.d/README (found on Ubuntu 12.10 but perhaps not other distros/versions) the number in the prefix determines the order in which the various device rules files are applied. Mind that works only if the number is followed by a dash character. If you use a period after the number instead of a dash, as is suggested in the above quote, then the number is ignored and the rules file will be applied last after all other rules files have been applied.

The reason I mention that is because not only did I have to switch to using ATTR instead of ATTRS, I also had to replace the dash (-) with a period (.) to get the bloody thing to work on Ubuntu 12.10. In other words it seems the radioactive.rules must be applied last on Ubuntu 12.10. I dunno for sure, just saying what I found does not work versus what does work, for me, YMMV, might not apply to other distros or versions of Ubuntu.

@Dingo... I think the above likely is not related to your troubles.