Hello, I am testing linux on a quite old hardware, an Apple PowerBook G4 "Titanium IV". I used to run Debian on this machine, so I upgraded the old operating system to the latest software and found that new kernels do not boot. I rebuilt natively (on the powerbook) a few kernels and found that 5.4.50 still works fine, while 5.6.19 and 5.7.7 stop after printing:
pmac32_cpufreq: registering PowerMac CPU frequency driver pmac32_cpufreq: Low: 667 MHz, High: 867 Mhz, Boot: 667 MHz no more output is printed. I waited 5 minutes and then powered off the machine using the power button. Rebooting with old kernel works. So, I am looking for help. How may I better investigate the problem? How may I crossbuild the kernel on a faster machine (amd64) in order to try git-bisect without waiting ages? Thank you, Giuseppe