Re: [LAU] Success! An Asus EEE softsynth!

Hi there!

These are very good news. As an eeepc 901 owner, I would like to be able
to do some audio work in it. But, after seeing in /proc/interrupts
that the audio card shares interrupt with usb4 and video card, etc, I
guessed it would not be really able to do rt-audio:

===========================
16: 180 0 IO-APIC-fasteoi uhci_hcd:usb4, HDA Intel,
i915@email-addr-hidden:0000:00:02.0
===========================

Do your model have the interrupts shared too? If yes, I would try...

Thanks,
Roman

Ken Restivo(e)k dio:
> I'm happy to report that I am writing this from my new EEE softsynth, running an RT-patched kernel, jackd, and several softsynths.
>
> System info, if anyone is interested, is here:
> http://restivo.org/projects/eee
>
> I'm stunned that this even works, but it does, and astoundingly well!
>
> I've got cpufreq userspace governor, manually set to maximum CPU speed (1.6Ghz). I'm using the crappy built-in hda-intel card, and not even at its native frame rate (I'm at 44100, not 48000). I'm also using a version of jackd that has been reported to be sub-optimal (0.109.2-3).
>
> The last missing peices were the rt2860sta and atl1e drivers, which I built in a few minutes from source packages already in Debian-EEE (make-kpkg modules_image .... done!). Many thanks for the patch to fix the alsa_seq; it works perfectly in the 2.6.26.8-rt12 kernel.
>
> I now have a usable Linux synth for live performance, which weighs 1.45KG, fits in a backpack, runs all my crucial sounds, draws about 1 amp at maximum CPU speed, and reportedly will run 6 hours on its own internal battery. With the cheap Edirol PCR-30 I bought a few months ago, and a small battery-powered amp, I can do street performances now-- or other casual gigs-- while lugging a minimum amount of gear. I'm thrilled.
>
> I still have to compile a couple packages that aren't in Debian: my own few utilitiies, AZR3-JACK, klick, WhySynth, and a few others, and I'm set to go. I also want to recompile the kernel again to change the timer 1000Hz not 250Hz.
>
> 0.109 works, but what is the most stable/reliable/efficient version of JACK I should look into. 0.116?
>
> -ken
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>

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Received on Tue Feb 3 16:15:02 2009