Am Montag, 29. April 2002 16:04 schrieb Linux Mailing lists account: > On Friday, Apr 26 Kasper Souren wrote: > > Hi. I'm trying to get my laptop soundchip, an ES1869 running under ALSA. > > Under OSS it runs as an sb. With "modprobe sb io=0x220 irq=5 dma=1 > > dma16=5" I get: > > > > SB 3.01 detected OK (220) > > ESS Chip ES1869 detected > > <ESS ES1869 AudioDrive (rev 11) (3.01)> at 0x220 irq 5 dma 1,5 > > I also have a laptop that has an ESS ES1879 AudioDrive, and could get ALSA > to work. I posted a question/request to this list about 6 weeks ago as > well, but never even got a response back.I gave up and went back to OSS. > > I hope you have more luck! Maybe, if you get the ES1869 problem solved, > it'll fix the ES1879 as well! :-) I wouldn't think that the ALSA > developement team would want to keep around a broken driver. > > Gerry Simmons > [EMAIL PROTECTED] >
For now, the es18xx is broken. In the source code you can find the following commentary: /* GENERAL NOTES: * * BUGS: * - There are pops (we can't delay in trigger function, cause midlevel * often need to trigger down and then up very quickly). * Any ideas? * - Support for 16 bit DMA seems to be broken. I've no hardware to tune it. */ /* * ES1868 NOTES: * - The chip has one half duplex pcm (with very limited full duplex support). * * - Duplex stereophonic sound is impossible. * - Record and playback must share the same frequency rate. * * - The driver use dma2 for playback and dma1 for capture. */ /* * ES1869 NOTES: * * - there are a first full duplex pcm and a second playback only pcm * (incompatible with first pcm capture) * * * - there are a first full duplex pcm and a second playback only pcm * (incompatible with first pcm capture) * * - there is support for the capture volume and ESS Spatializer 3D effect. * * - contrarily to some pages in DS_1869.PDF the rates can be set * independently. * * BUGS: * * - There is a major trouble I noted: * * using both channel for playback stereo 16 bit samples at 44100 Hz * the second pcm (Audio1) DMA slows down irregularly and sound is garbled. * * The same happens using Audio1 for captureing. * * The Windows driver does not suffer of this (although it use Audio1 * only for captureing). I'm unable to discover why. * */ so oss sb is for now the only driver that work :-( Arndt H. _______________________________________________ Alsa-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-devel
