[mythtv-users] Kernel rollback problem

[pjf at cape.com]

Craig,

Try this,
Boot up your system with the current kernel.
edit your /boot/grub/grub.conf   and copy the working kernel section.

ADD a section BELOW the working one:
# note the LABEL= Section should be the same as your current kernel)
#  be sure the kernel and initrd are in your /boot directory
#  you may want to remove the rhgb and quiet flags to get an old fashon
text boot

title Fedora Core (2.6.20-1.2962.fc6)
        root (hd0,0)
        kernel /vmlinuz-2.6.20-1.2962.fc6 ro root=LABEL=/ rhgb quiet
        initrd /initrd-2.6.20-1.2962.fc6.img

Reboot

-Pete

> I am running FC6 and keep at least one previous kernel around whenever I
> upgrade, but never had need of it until now.  I want to revert from a
> 2.6.22(IIRC --  not able to check right now) kernel to a
> 2.6.20 kernel to regain ACPI alarm wakeup functionality while the kernel
> devs are investigating how it got broken by their improvements.
>
> Now I find I need more knowledge to revert to the older one successfully.
>
> I tried a manual override from the grub startup screen and it started to
> boot, but it froze when it got to starting the X font server (xfs), not to
> be confused with anything to do with the xfs file system.
>
> What do I do?  How do I figure out what to do for the next complication
> (there's always room for one more ;-)
>
> Craig.
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