Real-time kernels from the Ubuntu Studio Lucid repositories
Ralf Mardorf
ralf.mardorf at alice-dsl.net
Sat Oct 2 14:46:29 BST 2010
On Sat, 2010-10-02 at 09:40 -0400, Mike Holstein wrote:
> 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....
No, Suse and 64 Studio are ok, but I can't boot a real-time kernel for
Ubuntu Studio Lucid.
> just to be clear ralf, you are having these boot issues with 64studio?
> you could try adding https://launchpad.net/~abogani/+archive/ppa 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 hardy...
Again, a misunderstanding, 64 Studio 3.0 = Hardy and 3.3 = Karmic are ok
on my machine (Suse too), but Ubuntu Studio fails.
Cheers!
Ralf
>
> On Sat, Oct 2, 2010 at 9:06 AM, Ralf <ralf.mardorf at alice-dsl.net>
> 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-2.6.33.5-rt23
> 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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>
>
>
> --
> MH
> http://www.myspace.com/mikeholstein
>
> http://opensourcemusician.libsyn.com/
>
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