Stan: How did you test out all these kernels? I was trying to do so by downloading various kernels at https://snapshot.debian.org/binary/linux-image-powerpc/ and installing them with dpkg, but since they didn't generate config files in /boot I'm unable to create vmlinux or initrd.img files for BootX.
On Wed, 2025-09-03 at 19:27 -0600, Stan Johnson wrote: > The only kernel where I'm seeing a system hang on the Wallsteet > (framebuffer console blank, backlight on, system doesn't boot) is > vmlinux-6.6.3+deb14-powerpc. I don't see that failure with any of the > mainline kernels that I checked. > > With mainline kernels, I see two failure modes: > > 1) The framebuffer console freezes at the BootX screen in Mac OS, but > Linux still boots and the system can be accessed over the network. > 2) X11 initiation fails, but the system reaches a text login at the > framebuffer console. > > There appears to be a kernel regression between v6.2-rc1 and v6.2- > rc8: > > v6.2-rc1 : X11 works > v6.2-rc8 : failure mode 1 > > There may be a second issue (or perhaps a fix of failure mode 1 that > triggered failure mode 2) between v6.4-rc1 and v6.4-rc7: > > v6.4-rc1 : failure mode 1 > v6.4-rc7 : failure mode 2 > > I'll send another update in a few days after doing a kernel bisect. > > ----- > > v5.18 : X11 works > v6.1 : X11 works > v6.2-rc1 : X11 works > v6.2-rc8 : failure mode 1 > v6.2 : failure mode 1 > v6.4-rc1 : failure mode 1 > v6.4-rc7 : failure mode 2 > v6.4 : failure mode 2 > v6.6 : failure mode 2 > v6.16 : failure mode 2 > v6.17-rc4 : failure mode 2
