- Yes, I made new admin user accounts, in safe mode too. They had same problem.
- I have not tried reinstalling the OS. Using the patched installer went all smoothly, reinstalling wouldn't probably help. I have not tried a fresh install, I prefer not to due to all the extra hassles.
- I simply used dosdude1's installer, the only extra patch I used was
https://github.com/julian-poidevin/MBPMid2010_GPUFix, which I have been using for a long time without any issues.
- Testing a non-GUI 32 bit is an interesting idea. Is there such an app out there to try out?
Yes I used an NVRAM flag:
nvram boot-args="-no_compat_check"
Without that flag, when I got to the login page I got GPU kernel panic. Could that be related to 32 bit apps problem?