> > >>For what it's worth, this does not happen with: > > >> cpu0 at mainbus0: 750 (Revision 0x3311): 499 MHz: 256KB backside cache > > >> > > >>I'll try to put my B&W G3 back in working condition ASAP to check if I > > >>can reproduce the problem. It features: > > >> cpu0 at mainbus0: 750 (Revision 0x202): 400 MHz: 1MB backside cache > > >>so if this is indeed an old-G3 specific issue, I should be affected. > > > > > >... and I can reproduce this on the B&W G3 here. I'll try to > > >investigate, but this machine is actively trying to commit suicide (when > > >it does not spontaneously powers off). > > > > Was this fixed? > > No. But I lost a lot of hair. And I could not find anything interesting > in the various G3 errata documents.
That said, I wonder if mpi@'s recent rewrite of the idle path on ppc will change that behaviour. Something for the week-end...
