I have a PowerMate USB controller from Griffin: it works, but using my normal user account I can't control the light settings. With a fresh new account, everything works as expected. How can I find what cause the trouble?
I can interact with it, turn it, press it, and it reacts as expected.
But I can't control the light settings: the light is always on, even if I set it to pulsing mode. It doesn't blink when it should.
Each time I do an action that should change the light state (assigning the Default Set to the PowerMate unit, or changing the default light state in the settings), I get this error in the console:
19/03/11 17:39:42 PowerMate PowerMate Device location: 26410000 service: 0000b69b USBDeviceOpen failed: e00002c5
Sometimes, I get multiple entries of the same error (up to 14 times). Except for this error and the following error at launch of the app, there is nothing helpful.
Path (null) given to -[NSWorkspace iconForFile:] is not a full path.
I'm running Lion 10.7.1 (problem was similar on Snow Leopard).
Here is what I have done so far to troubleshoot:
Make sure the application PowerMate.app is not running
Un-plug the USB PowerMate device and every other USB devices (except for my keyboard)
Remove everything created by the application PowerMate.app with:
rm ~/Library/Preferences/com.griffintechnology.PowerMate.plist; rm -rf ~/Library/Caches/com.griffintechnology.PowerMate; rm -rf ~/Library/Application\ Support/PowerMate;
Repair the authorization with Disk Utility.app
Apply the latest combo update (MacOSXUpdCombo10.6.6.dmg)
Launch the latest version of the PowerMate.app application (version 3.0 - 3012).
Then plug-in the USB PowerMate device.
Anything else you suggest to find the difference between my account and a new one?
Known Differences That Matter between the accounts:
Similarities between the accounts:
Both accounts are admin of the machine.
They are members of the same group.
Output of the id command:
my normal account (the one with the issue):
uid=501(mylogin) gid=20(staff) groups=20(staff),401(com.apple.access_screensharing),102(com.apple.access_ssh),204(_developer),100(_lpoperator),98(_lpadmin),81(_appserveradm),80(admin),79(_appserverusr),61(localaccounts),12(everyone),402(com.apple.sharepoint.group.1)
the fresh new test account (the one where it works):
uid=502(test2) gid=20(staff) groups=20(staff),401(com.apple.access_screensharing),204(_developer),100(_lpoperator),98(_lpadmin),81(_appserveradm),80(admin),79(_appserverusr),61(localaccounts),12(everyone),402(com.apple.sharepoint.group.1)
I am in contact with Griffin support. They are very nice, but so far we haven't been able to find the reason of the issue.
Update: Apparently, the error code
e00002c5 means "exclusive access and device already open".
Any idea how to figure what process has access to a USB Device?