Re: [LAU] options for hard real time kernel for raring 13.04

From: Rafael Vega <email.rafa@email-addr-hidden>
Date: Wed Sep 11 2013 - 23:05:03 EEST

To install it on 13.04, I manually added the following line to
/etc/apt/sources.list

deb http://ppa.launchpad.net/kxstudio-team/ppa/ubuntu precise main

and then the usual sudo apt-get update && sudo apt-get install ...

On Wed, Sep 11, 2013 at 1:00 PM, Jeremy Jongepier <jeremy@email-addr-hiddenwrote:

> On 09/11/2013 04:46 PM, Marco Donnarumma wrote:
> > update:
> >
> > 1_ tried to install 3.10-2-rt-686-pae_3.10.7-1_i386.deb from
> > http://packages.debian.org/jessie/linux-image-3.10-2-rt-686-pae, but it
> > didn't like my initramfs-tools version (apparently too old for the new
> > kernel) and installed without configuration so had to remove. See log:
> >
> > dpkg: dependency problems prevent configuration of initramfs-tools:
> > linux-image-3.10-2-rt-686-pae (3.10.7-1) breaks initramfs-tools (<<
> > 0.110~) and is unpacked but not configured.
> > Version of initramfs-tools to be configured is 0.103ubuntu0.7.
> >
> > 2_ my low-latency kernel is 3.8.0*. I compiled my own rt-kernel, using
> > http://www.kernel.org/pub/linux/kernel/v3.x/linux-3.2.48.tar.bz2 and its
> > related rt patch, as in the tutorial that Jeremy posted. The kernel
> > compiles and installs fine, but when I load it from grub, Mint load
> > correctly, and then (before seeing anything on screen) my screen goes
> > black. Nothing to do there, tried to use hotkeys to get a tty, restart,
> or
> > shutdown, but had only to push the power button.
> >
>
> Switching tty's probably works but you don't see it. Did you try
> switching with Alt+F1 and then rebooting with Ctrl+Alt+Del? If that
> doesn't work you could try Alt+SysRq+R,E,I,S,U,B, that should cleanly
> reboot the machine.
>
> > It's probably an nvidia driver-related issue, am I correct?
> >
> > Found some suggestions about patching the nvidia driver with some custom
> > code here [1], but the driver they use there is quite old. And last time
> I
> > had fiddled with nvidia driver it was the most painful experience
> ever... :)
> >
>
> Did you try the patch in my Github repository? You can download it with:
> wget
>
> https://raw.github.com/AutoStatic/nvidia-rt/master/patch-3.0-rt-nvidia.patch
>
> And then patch the Nvidia source, unfortunately I do noy know by heart
> how to proceed.
>
> Best,
>
> Jeremy
>
> > Will investigate further, please throw me suggestions if any,
> >
> > I might ask falkTX how he sees the rt-kernel for 13.04. I saw there is
> some
> > working on Launchpad, but they are last modified sept. 2012 (?).
> >
> > thank you!
> > best,
> > M
> >
> > [1]
> >
> >
> >
> > --
> > Marco Donnarumma
> > New Media + Sonic Arts Practitioner, Performer, Teacher, Director.
> > Embodied Audio-Visual Interaction Research Team.
> > Department of Computing, Goldsmiths University of London
> > ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
> > Portfolio: http://marcodonnarumma.com
> > Research: http://res.marcodonnarumma.com
> > Director: http://www.liveperformersmeeting.net
> >
> >
> > On Wed, Sep 11, 2013 at 2:02 PM, Marco Donnarumma <devel@email-addr-hidden
> >wrote:
> >
> >> Did you consider building your own kernel? I'm using self-built RT
> >>> kernels on Ubuntu 12.04 and that works great:
> >>>
> >>>
> http://wiki.linuxaudio.org/wiki/system_configuration#build_your_own_real-time_kernel
> >>> And are you using rtirq?
> >>> Alessio Abogani stopped maintaining th RT kernels for Ubuntu quite a
> >>> while ago. You might want to ask falkTX about the possibilities of
> >>> offering a raring RT kernel.
> >>>
> >>> Best,
> >>>
> >>> Jeremy
> >>>
> >>>
> >> Hey Jeremy!
> >>
> >> Yes, that's the other thing I will try now, good to know it works on
> 12.04.
> >>
> >> My pain in the a... is that I have to use nvidia drivers, and had
> troubles
> >> some time ago with them and rt-kernels.
> >>
> >> Do you happen to know whether I need to patch nvidia support into the
> >> rt-kernel I build? (I guess so... just to be sure)
> >>
> >> thanks!
> >> best,
> >> M
> >>
> >>
> >>
> >
>
>
>
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>
>

-- 
Rafael Vega
email.rafa@email-addr-hidden

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Received on Thu Sep 12 08:15:03 2013

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