25 Jul
2008
25 Jul
'08
12:07 p.m.
On Wed, 2008-07-23 at 17:34 +0200, Robin Gareus wrote:
Esben Stien wrote:
Same here in my experience. I have not tried 2.6.26 yet.
Susan Cragin <susancragin(a)earthlink.net>
writes:
2.6.24 was very stable for audio, at least over here more so than
2.6.25! It's stuck at 2.6.24-19, and the generic
kernel is up to 2.6.26-4
http://kerneltrap.org/Linux/Removing_the_Big_Kernel_Lock
It seems like we're stuck with 2.6.25. (I'm stuck with 2.6.23 cause of
some weird audio problems with xmms2 on 2.6.24 and 2.6.25).
Anyone know what the foreseeable future holds? I've got a 2.6.26-rt1 working from
git://git.kernel.org/pub/scm/linux/kernel/git/clrkwllms/rt-linux.git
It supports Rui's rtirq setup and jackd/USB-UA25 ran >5 mins without
xruns at 128frames/period, wifi working, it suspends to RAM and
everything. BUT I did not yet try any longer since it spits out the
following message once per second:
=======================
BUG: sleeping function called from invalid context swapper(0) at
kernel/rtmutex.c:743
in_atomic():1 [00000001], irqs_disabled():0
Pid: 0, comm: swapper Not tainted 2.6.26-rt1 #2
[<c01250cb>] __might_sleep+0xeb/0xf0
[<c034199f>] __rt_spin_lock+0x5f/0x70
[<c03419b8>] rt_spin_lock+0x8/0x10
[<c01498d0>] pm_qos_requirement+0x10/0x30
[<f886afc9>] acpi_processor_idle+0x407/0x530 [processor]
[<f886abc2>] ? acpi_processor_idle+0x0/0x530 [processor]
[<c0102cf8>] cpu_idle+0x68/0xf0
[<c033253c>] rest_init+0x6c/0x70
=======================
It does not seem to be a real Bug.. but it's an annoying /mosquito/.
I asked Ingo about this and never heard back from him.
This patch stops the mosquito noise for me :-)
http://lkml.org/lkml/2008/6/8/59
But as there are no comments from the gurus it is possibly a bad idea
(although it has not been bad in my case, AFAICT)...
-- Fernando
I guess it's related to NO_HZ or some ACPI_XXX
config. I could not get the
-tip branch to boot at all, but I did not try too hard just yet.
stay tuned,