[PlanetCCRMA] kernel-rt not in bootmenu ?

[Fernando Lopez-Lezcano]

On Sun, 2009-06-21 at 19:29 +0200, Martin Tarenskeen wrote:
> On Thu, Jun 18, 2009 at 08:56:18AM -0700, Fernando Lopez-Lezcano wrote:
> > On Thu, 2009-06-18 at 11:16 +0200, Martin Tarenskeen wrote:
> > > I have installed both the new PlanettCCRMA kernel-rt and kernel-rtPAE 
> > > versions on my Fedora 11 EeePC. Installation looks fine, and the 
> > > grub bootmenu shows the differnt newly installed kernels to choose from.
> > > 
> > > But after that my screen goes black, and nothing happens. Or maybe 
> > > something happens but I can't see it.
> > > 
> 
> > Of the rt kernels, which version works and which version fails? (not
> > that I can really really do much about it...)
> 
> On my Fedora 11 powered EeePC I have:
> 
> kernel-2.6.29.4-167.fc11.i586
> kernel-rt-2.6.29.5-1.rt21.1.fc11.ccrma.i586
> kernel-rtPAE-2.6.29.5-1.rt21.1.fc11.ccrma.i686
> 
> Both rt versions fail. Is it possible, using yum, to re-install the 
> previous released fc11.ccrma kernel-rtPAE version ? That one was running 
> ok.

Yes, it should be possible. In fact, it should be still there if you
have not erased it... You have to install the yum-allowdowngrade plugin
and then explicitly tell yum which kernel version you want to install,
something like:

yum install kernel-rt-2.6.29.x-yyyy --allow-downgrade

> > You could edit /boot/grub/grub.conf and change some stuff, to better
> > select the kernel you are about to boot you could increase the timeout.
> > Then to see what is going on you can either press the escape key right
> > after you select the boot kernel, or you can remove the "rhgb quiet"
> > part of the kernel boot line in grub.conf - that should show you the
> > kernel messages as the machine tries to boot...
> 
> That helps. I can now see a last message before my screen goes black. 
> The problem seems to be in this error message:
> 
> "EXT2-fs: dm-0: couldn't mount because of unsupported optional features 
> (240)."
> 
> I have no idea what this means. But it doesn't look very good. 
> It only happens on my EeePC. On my other laptop I have installed the 
> latest fc10.ccrma kernel-rt version from the testing repo and it works 
> fine.

Hmmm, from what I can ggogle it would seem it is some sort of problem
with ext3 vs. ext4. I _think_ the default install in fc11 is ext4
instead of ext3. 

http://bbs.archlinux.org/viewtopic.php?id=62914

Sorry, I don't know exactly what might be happening...
-- Fernando