Can not boot 2.6.20-15.25

[John Lenz]

ii  linux-image-2.6.20-14-generic              2.6.20-14.22
                  Linux kernel image for version 2.6.20 on x86
ii  linux-image-2.6.20-15-generic              2.6.20-15.25
                  Linux kernel image for version 2.6.20 on x86
ii  linux-image-generic                        2.6.20.15.14
                  Generic Linux kernel image


Attached is a dmesg and lspci when running on 2.6.20-14.22.

When booting 2.6.20-15.25, the ata drivers do not work, and I get an
error /dev/sda does not exists.  I was not able to get a dmesg, but did
hack //usr/share/initramfs-tools/scripts/init-premount/udev to include a
/bin/sh at the end, so I could poke around after udev ran.

I then ran "# more /dev/kmsg" and wrote down the following errors...
everything up to this point looked ok

[ 52.388037 ] ata1.00: n_sectors mismatch 486539294 != 488397168
[ 52.388075] ata1.00: revalidation failed (errorno = -19)
[ 52.388151] ata1: failed to recover some devices, retrying in 5 seconds

[ 58.024664] repeat of n_sectors mismatch, revalidation failed

[ 58.024738 ] ata1.00: disabled

[ 58.839445 ] ata2: SATA link down
[ 58.859961 ] ATA: abnormal status 0x7F on port 0x0000....010977

more abnormal status 0x7F on port .... 0x0000...00<last few numbers
different>  but I see those show up in the 14.22 log in any case


I did see in the /proc/kmsg file stuff about eth0 being set up, but
busybox in the initrd didn't have anything to transfer (like ftp) that I
could see, so that I could copy the whole dmesg off...

John

PS: the kernel images still do not provide kvm-api-9 like they were said
to in
https://bugs.launchpad.net/ubuntu/+source/kvm/+bug/105263
so kvm is still held at 16-1ubuntu
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