I have a g4 PPC running debian with the 2.6.26 kernel which I compiled Last night, and everything works fine. I tried to compile a kernel withe the rt patch and now my machine stalls at boot. For instance:

other times it stalls while waiting for the root device, or it cannot find /lib/modules/2..26-rt1/modules.dep...

It seems to me, the bootloader cannot find the kernel, or any associated files, or even the partition. Obviously, I looked at my yaboot configuration, but everything seems fine there, and my other kernels still boot normally. Is this a known issue? Anyone else experiencing this?

Well, I f nobody has any ideas, where can I go to ask such questions re: LinuxRT/CONFIG_PREEMPT_RT ? The only resource I've found is the wiki.

Try compiling the ide driver into the kernel instead of having it as a module and loaded by initrd.

Thanks for the reply.
Under Device Drivers->ATA/ATAPI/MFM/RLL support:

The folowing are compiled in the kernel (not modules)

BLK_DEV_IDE
BLK_DEV_IDE_PMAC (and children)

I still recieve the error at startup:
is there a way I can get the startup messages from my failed session once I've booted in a stable session, so I can list them here?

I think the problem comes from the device name, /dev/hda. IIRC, the kernel expects all devices to be named /dev/sdX. I think the Debian guys patched things so that /dev/hsX would still be accepted. I would suggest trying the debian patch for the kernel, or try setting up grub and the fstab to mount everything onto /dev/sdX.

Peace,
JimBass

OK, I'll try that. this still wouldn't explain the discrepancy in the patched and un-patched kernel. Again, I have a 2.6.26 kernel working perfectly, and the -r patch is what breaks it.