Blob 12.6 from AMD's site, not sure if it's different than the latest 12.6 beta mentioned here.
E-350 hw, unrecognized by aticonfig (no supported adapters detected). It's 1002:9802, a standard E-350 AFAIK.

Now, in order to use gDebugger on this without it locking up, I need to disable the blob's BlockSignalsOnLock option.

gDebugger tells to run "aticonfig --sb off", which obviously gives the no supported adapters message.
The release notes say that one can also add that to the Device section in xorg.conf, so I added it.

But:
/var/log/Xorg.0.log:(WW) fglrx(0): Option "BlockSignalsOnLock" is not used
Any hints? The unofficial bugzilla gave zero hits for "block".