Rene Herman wrote: > This is behaviour consistent with the IRQ being dead ... > > I suppose it used to work and I suppose the behaviour > you are describing above is 100% repeatable? I can't tell you exactly *when* it used to work, or even *if* it did with 2.6 kernels. I'll try to explain... Sometime back in the 2.6.14 to 2.6.16 timeframe there was an issue with the ALSA driver not recognizing interrupts (causing looping). Tyson Whitehead had put together a patch for the interrupt problem that worked for him, but not for me or Michael. One workaround back then was using the snd-sb8 driver that supports only one DMA channel (half-duplex operation) anyway: that was a reliable workaround, and may be what I'm remembering for the "it used to work" case. I can't find any reliable evidence that I've *ever* been able to use the ES1888 with its proper driver under ALSA with 2.6 kernels. As far as Tyson's patch, I know he reported it upstream to the ALSA developers, but I saw no followup communication from either Tyson or the developers. > Given that you can use aplay -- probably no difference with "aplay -M" ? I'll give it a shot. > To get to the bottom of this we might need to get a specific failed version > (for readers, it's not been verified that this is a regression since 2.6.24) > but we can try to get lucky first. I'm beginning to think this is *not* a regression, but merely a long- standing ALSA issue that was never addressed. I would be fine with reclassifying this as an ALSA bug and dropping linux-kernel from the discussion. > Okay. (tests) seem to at least confirm it's not the 16-bit DMA. As far as how to proceed from here, I'm certain things were broken in 2.6.1[4-6]. I could try various later releases between .16 and .24 to see if snd-es18xx worked for any of those, but I think the answer will be "no." I think a useful test would be to see if "snd-sb8" works in 2.6.25-rcX, which would at least narrow things down a bit. -- ------------------------------------------------------------------------ Bob Tracy | "I was a beta tester for dirt. They never did rct@xxxxxxxx | get all the bugs out." - Steve McGrew on /. ------------------------------------------------------------------------ _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
