Real-time kernels from the Ubuntu Studio Lucid repositories

Mike Holstein mikeh789 at
Sat Oct 2 14:40:09 BST 2010

interesting ralf... i wonder if thats just too new to work with
hardy/64studio... from what i remember, 64studio has an RT kernel already...
good luck getting an answer to this question, but i would wonder what in the
64studio repos would or would not work with the modern kernels....

just to be clear ralf, you are having these boot issues with 64studio? you
could try adding to 64studio i
suppose, but when you look there, you can see there is an apt line for lucid
and maverick... theres probably a good reason why there is not one for

On Sat, Oct 2, 2010 at 9:06 AM, Ralf <ralf.mardorf at> wrote:

> Hi :)
> another trial to boot a kernel-rt on my machine.
> spinymouse at ubuntu:/boot$ ls vmlinuz*
> vmlinuz-2.6.31-10-rt
> vmlinuz-2.6.31-11-rt
> vmlinuz-2.6.32-23-preempt
> vmlinuz-2.6.32-24-preempt
> vmlinuz-2.6.32-25-preempt
> vmlinuz-2.6.33-23-realtime
> vmlinuz-2.6.33-29-realtime
> vmlinuz-
> spinymouse at ubuntu:/boot$ ls initrd*
> initrd.img-2.6.31-10-rt
> initrd.img-2.6.31-11-rt
> initrd.img-2.6.32-23-preempt
> initrd.img-2.6.32-24-preempt
> initrd.img-2.6.32-25-preempt
> initrd.img-2.6.33-23-realtime
> initrd.img-2.6.33-29-realtime
> The kernel without initrd is a self build kernel-rt, build the same way
> I build DEB packages for kernel-rt for 64 Studio based on Hardy. I don't
> know why I didn't got the initrd for Ubuntu Studio Lucid.
> I can boot all the preempt kernels. When I try to boot 2.6.31-10-rt I
> get the message 'No such device' on startup. The entry for grub.cfg is
> ok [1].
> It's the same for 2.6.31-11-rt.
> When I try to boot 2.6.23-realtime I get the message
> '[...] ACPI: Expecting a [Reference] package element, found type 0'
> only, followed by tty1.
> For 2.6.33-29-realtime I get the message
> '[...] ACPI: Expecting a [Reference] package element, found type 0
> [...] ata1: softreset failed (device not ready)
> [...] ata2: softreset failed (device not ready)
> [...] ata3: softreset failed (device not ready)',
> followed by tty1.
> I've got 1 SATA DVD drive and 2 SATA hard disk drives. Could it be an
> issue regarding to a PATA module, but a SATA module?
> The self-build kernel ends in a kernel panic.
> ASAP I'll build another kernel-rt myself and post all steps I do.
> Cheers!
> Ralf
> [1]
> I've got the influenza, so I might had a blackout and missed something,
> because of this I attached my grub.cfg, a manually edited one:
> spinymouse at ubuntu:~$ cat /usr/sbin/update-grub
> #!/bin/sh -e
> exec grub-mkconfig -o /boot/grub/grub.cfg_$(date +"%b-%d-%Y_%H-%M-%S")
> "$@"
> spinymouse at ubuntu:~$ ls /boot/grub/grub.cfg*
> /boot/grub/grub.cfg  /boot/grub/grub.cfg_Oct-02-2010_12-22-37
> I copied the entries for all Ubuntu Studio real-time kernels and
> 2.6.32-25-preempt from the latest auto-generated
> grub.cfg_Oct-02-2010_12-22-37.
> FWIW all kernel-rt for 64 Studio and Suse are self-build, the
> kernel-multimedia are also kernel-rt, but from the 64 Studio
> repositories. I can boot all those kernels, but I'm also unable to boot
> kernel-rt from the Suse repositories and the self-build Suse needs a
> Ctrl+Alt+Double-Backspace after startup, before it's ok.
> --
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