As I reported earlier, intel8x0 fails to resume properly on my Dell I8200 with alsa >= 0.9.7
This is due to the fact that snd_intel8x0_ich_chip_init() no longer waits that extra 1/4 second it used to in 0.9.6 and ealier. It seems to believe that all the codecs are ready, but apparently they are not. I tried to look into this a bit further and found that: In intel8x0_resume() there are two ac97 codecs actually resumed on my machine (I suppose that these are precisely the primary and secondary ones that snd_intel8x0_ich_chip_init() has waited for already), indexed 0 and 1. When resuming ac97 no. 0, in snd_ac97_resume() there are quite a few registers that do not get set properly. For example, here's a bit of my debugging messages: Nov 18 23:58:24 pisica kernel: PEZZ: bad register 2: c0c 8000 Nov 18 23:58:24 pisica kernel: PEZZ: bad register 6: 801f 8000 Nov 18 23:58:24 pisica kernel: PEZZ: bad register a: 801e 0 Nov 18 23:58:24 pisica kernel: PEZZ: bad register c: 801f 8008 Nov 18 23:58:24 pisica kernel: PEZZ: bad register e: 801f 8008 Nov 18 23:58:24 pisica kernel: PEZZ: bad register 10: 9f1f 8808 Nov 18 23:58:24 pisica kernel: PEZZ: bad register 12: 9f1f 8808 Nov 18 23:58:24 pisica kernel: PEZZ: bad register 14: 9f1f 8808 Nov 18 23:58:24 pisica kernel: PEZZ: bad register 16: 9f1f 8808 Nov 18 23:58:24 pisica kernel: PEZZ: bad register 18: 1010 8808 Nov 18 23:58:24 pisica kernel: PEZZ: bad register 1c: 0 8000 Nov 18 23:58:24 pisica kernel: PEZZ: bad register 1e: 0 8000 The first value is the one read from the register after writing into it, the second is what was written. On the other hand, if I just add a hard-coded 1/4 second wait before snd_ac97_resume(), emulating the good old days, I only get: Nov 19 00:00:26 pisica kernel: PEZZ: bad register 2a: 9 209 And the sound resumes fine. The other ac97, indexed 1, seems to be indifferent to whether I resume it with or without such a delay. So I believe the problem is that codec no. 0 is not waited for properly, even though it reports to be ready... Could that be? Please help me out here. Thanks, Itay __________________________________ Do you Yahoo!? Protect your identity with Yahoo! Mail AddressGuard http://antispam.yahoo.com/whatsnewfree ------------------------------------------------------- This SF.net email is sponsored by: SF.net Giveback Program. Does SourceForge.net help you be more productive? Does it help you create better code? SHARE THE LOVE, and help us help YOU! Click Here: http://sourceforge.net/donate/ _______________________________________________ Alsa-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/alsa-devel
