Re: G5 Quad hangs early on 4.20.2 / 5.0-rc2+

Tobias Ulmer [off-list ref] writes:

Hi,

both the latest stable 4.20.2 and 5.0 rc2+ hang early on the G5 Quad.

Surely I'm not the first to run into this, but I couldn't find any
discussion or bug report. Sorry if you're already aware.

Actually you're probably the first to hit it :)

I have a quad but it never gets to openfirmware and I haven't had time
to look into why.

My iMac G5 and dual G5 are booting OK though.

You can see it hang here (5.0 rc2+, 4.20.2 is nearly identical) until
the watchdog triggers a reboot:

https://i.imgur.com/UiCVRuG.jpg

If I had to make an uneducated guess, it seems to boot into the same
codepath twice (mpic was already initialized, then it starts again right
after smp bringup). Maybe on a second CPU?

Can you compare to a working boot log, does that give us any clues?

Can you post your full .config for the non-working case.

cheers