Bug#581581: jack2: cause reboot after restart daemon

[Владимир]

03:30 14/05 , Adrian Knoth написал:
> On Fri, May 14, 2010 at 02:56:22AM +0400, Vladimir Ipatov wrote:
> 
> > I'm using my firewire audiocard(Echo Audiofire 4) with ffado drivers.
> > libffado, ffado-dbus-serverv, ffado-qt4-mixer and ffado-tools
> > versions:
> > 2.0.0-1
> > I'm using this versions because with the latest version,
> > 2.0.0+svn1813-1, mixer don't start.
> 
> 
> That's weird. Can you investigate it? Is it an upstream bug? Please file
> a bug report against the ffado package with the corresponding output.
> 
> The mixer clearly should work.
> 
Of course, I'll File a bug report about this.
> 
> > after upgrading jackd from 0.118+svn3796-3 to 1.9.5~dfsh-13 i noticed
> > bug: when i turn off my sound card, then turn it again and starting
> > jackd, my computer reboots.  It happens when jackd starting, not when
> > i turn on soundcard.
> 
> Just to learn more about this: do you start jackd as root or as a user?
as a user
> Normally, a user process should never be able to crash the machine.
> OTOH, firewire is a little bit special, because it has write access to a
> larger portion of the main memory.
> 
> However, jackd must not reboot the machine, that's for sure.
I think so too, but yesterday i saw crashes after restart jackd, and i can't explain it differently...
> 
> 
> > ieee1394: Node changed: 0-01:1023 -> 0-00:1023
> 
> This is the old firewire stack. Any chance you could run it on Juju?
> You'd need to upgrade your kernel to 2.6.32 or later.
Today I went to ffado.org, and saw that ffado already supports new stack, although one or two weeks ago the answer was "no".

So, I'll try to use my soundcard with new firewire stack. There Are 2.6.32 xen kernel in unstable, but i must upgrade xen-hypervisor to version 3.4.

> 
> 
> Though jackd2 might trigger the behaviour, it must not reboot your
> machine as long as you're not running jackd as root.
> 
> We surely need to investigate further...
> 
> 
> 
> -- 
> mail: adi at thur.de  	http://adi.thur.de	PGP/GPG: key via keyserver