Fernando Lopez-Lezcano wrote:
> On Fri, 2009-03-27 at 18:27 +0100, Robin Gareus wrote:
>> Fernando Lopez-Lezcano wrote:
>>> On Thu, 2009-03-26 at 22:20 +0100, Robin Gareus wrote:
>>>> Fernando Lopez-Lezcano wrote:
>>>>> On Thu, 2009-03-26 at 19:52 +0100, Robin Gareus wrote:
>>>>> We've got a winner! 2.6.29-rt1
>>>>>
>>>>>> Hmmmm, getting close but not yet a winner :-)
>>>>>> I've been tracking the 2.6.29 rcx series and I'm still having some
>>>>>> problems. 2.6.29-rt1 still does not shutdown correctly with my kernel
>>>>>> configuration options (you need to specify "noreplace-smp" in the kernel
>>>>>> startup line for shutdown to happen - otherwise you get a problem at the
>>>>>> very end of the halt and the machine does not power down).
>>>> This is related to your BIOS or motherboard. Do you have the same
>>>> problem with a vanilla 2.6.29?
>>> I have not tested with vanilla 2.6.29 but the problem happens in several
>>> very different machines. I have sent feedback to lkml/Thomas/Ingo.
>>>
>> Can you upload your .config ? It might also be some missing ACPI option.
>
> Attached...
> -- Fernando
>
I just compiled a kernel with your .config and got a few surprises:
- 2.6.29-rt1-ccrma works just fine with "irqbalance"
- over here it shuts down and halts the system even without
"noreplace-smp" (intel core duo in a Thinkpad X60s)
- using x86 generic compatibility dramatically increases the size
kernel+modules MCORE2: 21MB ; i686+x86-generic: 250MB !
more later,
robin
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We've got a winner! 2.6.29-rt1
I've just succeeded with a few tests: jackd realtime (64fpp with a USB
UA25) recording/playing Audio and MIDI with qtractor & qsynth and I
played a 32 channel ardour session - no xrun in sight!
I know this is old news since 64studio already ships a 2.6.29
pre-release - However, I run a debian squeeze/sid and
2.6.29-release-candidates were causing an OOPS on this system.
As it turned out it was caused by "irqbalance"! It took me quite a while
to track down that the rt kernel is no longer compatible with irqbalance
(it works fine with 2.6.24-rt).
Here's a debian package built for core2:
http://rg42.org/_media/wiki/kernel/linux-image-2.6.29-rt1_2.6.29-rt1-10.00.…
and the corresponding .config file:
http://rg42.org/_media/wiki/kernel/config-2.6.29-rt1.txt
kudos to the rt-linux devs.
have fun,
robin
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Heyda,
sorry for cross-posting: the first version of
"alsa-midi-latency-test"
is available at: http://github.com/koppi/alsa-midi-latency-test/
The console application aims to become a Linux drop-in-replacement for
the Windows application "MidiTest":
http://earthvegaconnection.com/evc/products/miditest/index.html
It would be nice to hear some feedback, especially from
- linux-audio-tuning users (-- what latencies are you measuring?!) and from
- alsa-developers (-- would be nice, to include this tool to the
alsa-utils package).
Kind regards,
++Jakob
