Re: Confusing sound issues (ALSA, jackd, etc.)
Inge - waves of empathy....
i had a very similar set of problems...finally found out about the
realtime-lsm, but simply could not get the damned thing to compile,(see
my mail of yesterday - maybe someone will still be able to help) so
you were a step ahead of me...
i am now trying with a demudi install....an improvement for me, but it
still is not doing all it should.
What with that and a grizzly bug in audacity that means i can't edit with
that either, i also contemplate throwing in the towel after a decade of
*nix use... It really is still a bit of an uphill battle.
Hopefully Agnula will produce something worthwhile, most importantly
because they seem to be intent on producing documentation. good :)
The problem at the moment seems to be that the different distros, and the
2.4/2.6 and all the 2.6's all are sufficiently different on the alsa/&c
things to make any partial clues culled from google not always very
useful.
Do let us know if you have a breakthrough/insights.
dee
On Sun, 15 Aug 2004, Inge Thorin
Eidsaether wrote:
>
> Hi
>
> I'm having a few problems getting jackd to work
> on my Debian box (testing, kernel 2.6.7)
> The soundcard is a Soundblaster Live.
>
> Sequencial summary (so far):
>
> ALSA seems to be working, that is: playback works.
> Haven't tried recording yet. So I installed Ardour.
>
> Ardour won't work unless jackd is running, which it wasn't:
>
> --------------------------------------------------------------
> Ardour/GTK 0.453.1 running with libardour 0.728.1
> Loading UI configuration file /etc/ardour/ardour_ui.rc
> ardour: [ERROR]: Could not connect to JACK server as "ardour"
> Killed
> --------------------------------------------------------------
>
> Aha, jackd it is, then.
> Tried starting jackd (or jackstart, as a regular user):
>
> -----------------------------------------------------------
> cannot get realtime capabilities, current capabilities are:
> =ep cap_setpcap-e
> probably running under a kernel with capabilities disabled,
> a suitable kernel would have printed something like "=eip"
> -----------------------------------------------------------
>
> Hm. Found out I needed the LSM realtime module.
> Why didn't the error message just say this?
> Or point to some place with more info on the problem?
>
> Even though I read somewhere that latency issues
> and such was now dealt with in kernel config, not
> in patches or modules? Could be my mistake. No big deal.
>
> Made sure kernel was configured as per the instructions
> for building the LSM realtime module. Meaning:
>
> CONFIG_MODULES=y
> CONFIG_SECURITY=y
> CONFIG_SECURITY_CAPABILITIES=m
> CONFIG_SECURITY_SELINUX=y
> CONFIG_MODULE_UNLOAD=y
>
> Built a kernel including the above options, then
> downloaded, compiled and installed the LSM realtime module,
> and it's seemed to load OK with no error messages:
>
> # modprobe realtime allcaps=1
> # lsmod | grep realtime
> realtime 9616 0
>
> Tried starting jackd (or jackstart, as a regular user):
> Now it just says 'illegal instruction'. Nothing more.
> No matter what arguments I give.
>
> By the way:
> LD_ASSUME_KERNEL=2.4.19 is set in .bash_profile
> to account for the 'creating SCHED_FIFO threads
> for real-time processing'-issue mentioned on
> jackit.sourceforge.net/docs/faq.php#a53
>
> Is jackd (the debian package) compiled with all necessary flags?
> Like --enable-capabilites ? How do I find out?
>
> *Taking a deep breath*
> I've spent more time than I like to admit tinkering with this,
> reading faqs, guides and tips from everywhere, but still not
> getting it to work. I'm just about ready to throw the towel in
> and go back to win98 (only for audio recording).
>
> Tried Agnula's DeMuDi, a dedicated Linux distro for Audio work,
> which indeed looked promising, and may work well, but:
>
> 1) v1.0 didn't recognize my serial mouse (Hellooo???)
> 2) v1.2 didn't recognize itself (the CD) as a valid Debian CD
> and refused to install (could be my CDROM needs a cleaning?)
>
> But I digress...
>
> The more I read the more questions I have, like:
>
> - What FAQ, guide, tutorial etc. is the most
> authoritative and updated on the subject?
> Differences abound, depending on kernel version, etc.
>
> - What files must be present for all this to work,
> (ALSA, jackd and all features of Soundblaster Live)
> on a system running the 2.6.7 kernel,
> and what magic do they possibly contain?
>
> -Why on Earth must all this be so convoluted? (sigh...)
> This is by far the biggest show stopper for me since,
> starting with Linux (first time in '95). I am most
> certainly not a guru, but no newbie anymore, either.
> I would like to spend some time actually doing some
> (audio) work, too. And my family likes to see my face in awhile.
> Is there a script available that takes the guesswork out of the
> installation of all of the necessary components?
> Obviously I'm not a programmer, so making one is out of my league.
>
> Sorry for whining, but now it's out of my system...
>
> I'm not subscribing to debian-user, but will search
> the mailing list for (hopefully) any answers.
> They will be most appreciated...
>
> Feel free to cc me your opinion, though.
>
>
> Thanks in advance,
>
> --
>
> Inge Thorin Eidsaether
> probot at warpmail dot net
>
>
> --
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