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On 11/25/20 5:52 AM, Elimar Riesebieter wrote: * John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> [2020-11-25 13:04 +0100]:On 11/25/20 12:40 PM, Elimar Riesebieter wrote:I tried to boot linux-image-5.10.0-rc4-powerpc on my PowerBook5,8. It seems the ramdisk isn't loaded as ist stocks at the white firmware boot. A custom build fails as well. I have no idea how to debug that. I am booting via yaboot.FWIW, if you think the initrd isn't being loaded, you may have run into a limitation with Yaboot. You have to keep in mind that Yaboot isn't being actively maintained anymore, at least not as it used to be. So in case of an incompatible change on the kernel side, you may run into such problems with the bootloader. You could try switching to GRUB.What is the preferred way to switch to grub2? Elimar Hello Elimar, I can confirm that Linux 5.10.0-rc5 also does not work on a PowerBook Lombard, hanging at the "found display ... opening ..." screen after loading the initrd.img file. The 5.10.0-rc5 initrd.img can be used with an older 5.8.4 kernel; however, the 5.8.4 initrd.img does not work with the 5.10.0-rc5 kernel, so the problem appears to be with the 5.10.0-rc5 kernel. Open Firmware on the PowerBook Lombard apparently doesn't support GRUB, so I'm still using yaboot, which works fine on this system. I use Debian 7.8 to manage the yaboot configuration, normally booting into either Debian SID or Gentoo. This problem does not appear to be related to yaboot. Adrian is right that a git bisect is likely needed to determine whether/where a regression occurred. Let me know if you'd like any help with that. -Stan Johnson |