Re: M-Audio Revolution 7.1 card hangups

[Takashi Iwai <tiwai@suse.de>]

[-- Attachment #1: Type: text/plain, Size: 1440 bytes --]

At Wed, 10 Sep 2003 10:30:25 -0700 (PDT),
Tom Watson wrote:
> 
> I just got one of these, and after converting my audio to 32 bits
> (necessary for the card) I got SOME sound out of it.
> 
> I have a couple of problems:
> 1) While the peak meters indicate that something IS there, try as I
> might, I can't get audio out of the card from anywhere but the first 2
> channels.  All the mixer controls in 'alsamixer' are up, and the two
> that control the first 2 channels DO work, but NO audio from the other
> channels.  The program I'm using DID work on another audio card with
> more than two channels.  The problem seems to be some dumb
> configuration thing.  Do I need to light this card up on a Windoze
> machine to set the EEPROM or something??

most likely a bug in the accessing to ak4355 codec.

> 2) I use 'alsamixer'.  Works fine.  One problem:  When I set the
> conversion rate to the SPDIF clock (it has another name IEC...) IT
> LOCKS AND STAYS THERE.  No amount of diddling in 'alsamixer' yields
> anything.  To get around this I revert back to an older setting (it is
> a long process) saved with 'alsactl' after a reboot.  While I have
> learned my lesson (DON'T DO THAT!), the behavior is not too good.

ok, that's easy.  please apply the patch attached.


> Note:  The card is 'fresh', and hasn't been in a Windows environment
> (if that means anything).

could you check whether the surround works on windows?


Takashi

[-- Attachment #2: ice1724-lock-fix.dif --]
[-- Type: application/octet-stream, Size: 786 bytes --]

Index: alsa-kernel/pci/ice1712/ice1724.c
===================================================================
RCS file: /suse/tiwai/cvs/alsa/alsa-kernel/pci/ice1712/ice1724.c,v
retrieving revision 1.17
diff -u -r1.17 ice1724.c
--- alsa-kernel/pci/ice1712/ice1724.c	10 Sep 2003 16:20:03 -0000	1.17
+++ alsa-kernel/pci/ice1712/ice1724.c	10 Sep 2003 17:54:42 -0000
@@ -382,11 +382,6 @@
 		return;
 	}
 
-	if (rate == ice->cur_rate) {
-		spin_unlock_irqrestore(&ice->reg_lock, flags);
-		return;
-	}
-
 	switch (rate) {
 	case 8000: val = 6; break;
 	case 9600: val = 3; break;
@@ -409,6 +404,11 @@
 		break;
 	}
 	outb(val, ICEMT1724(ice, RATE));
+	if (rate == ice->cur_rate) {
+		spin_unlock_irqrestore(&ice->reg_lock, flags);
+		return;
+	}
+
 	ice->cur_rate = rate;
 
 	/* check MT02 */