[ALSA - driver 0001047]: module hangs at seemingly random times

[bugtrack@alsa-project.org]

A NOTE has been added to this issue.
======================================================================
<https://bugtrack.alsa-project.org/alsa-bug/view.php?id=1047> 
======================================================================
Reported By:                alien999999999
Assigned To:                mjander
======================================================================
Project:                    ALSA - driver
Issue ID:                   1047
Category:                   PCI - au88x0
Reproducibility:            sometimes
Severity:                   block
Priority:                   normal
Status:                     assigned
Distribution:               Mandrake
Kernel Version:             2.6.7
======================================================================
Date Submitted:             04-12-2005 20:43 CEST
Last Modified:              01-14-2006 04:53 CET
======================================================================
Summary:                    module hangs at seemingly random times
Description: 
sometimes i start playing a song, and it starts playing a few second or so
and hangs, then i kill the application and modprobe -r all sound modules
and modprobe them again to make it work again.

BUT: sometimes not only that happens, but also when i try to kill the apps
it will not kill. when that happens, all kill, killall, top, ps aux
commands hang at the command line and cannot be killed by CTRL-C or
otherwise, i have been able to see that when i stopped my display
managener I did an lsmod and it gave something like this:

snd-pcm-oss            59752  11
snd-mixer-oss          20480  1 snd-pcm-oss
snd-au8810             43760  220
snd-ac97-codec         83408  1 snd-au8810
snd-pcm               108172  112 snd-pcm-oss,snd-au8810,snd-ac97-codec
snd-page-alloc         10384  1 snd-pcm
gameport                3840  1 snd-au8810
snd-mpu401-uart        11904  1 snd-au8810


as you can see the snd-au8810 module seem to have an impossible number of
"dependencies" (i think has to do with the number of unclosed sound-apps
trying to be played; this could be since gaim is programmed to execute an
'aplay %s')

i've had this major crash below only 3 times; and the logs didn't detect
anything specific at the time. the only thing the logs mentioned at that
time was an ntpd sync going on; so the only thing i can think of is that
at a certain moment when a sync is going on, some kind of lock is holding
cause this to happen... the only thing that i can do to fix this is
reset...

it is interesting to note that i also have an snd-emu10k1 as second card,
which never gave problems like this, and i am always able to "modprobe -r
snd-emu10k1" ...
======================================================================

----------------------------------------------------------------------
 tiwai - 01-13-06 18:18 
----------------------------------------------------------------------
FYI, I merged the patch above to ALSA CVS tree now.

----------------------------------------------------------------------
 Raymond - 01-14-06 04:53 
----------------------------------------------------------------------
When the equalizer is in bypass mode, the gain of the 10 bands of the left
and
right channels should be the same, therefore this14_array only need 10
values instead of 20.


Index: alsa-driver/alsa-kernel/pci/au88x0/au88x0_eq.h
===================================================================
RCS file: /cvsroot/alsa/alsa-kernel/pci/au88x0/au88x0_eq.h,v
retrieving revision 1.2
diff -u -r1.2 au88x0_eq.h
--- alsa-driver/alsa-kernel/pci/au88x0/au88x0_eq.h	13 Jan 2006 17:16:29
-0000	1.2
+++ alsa-driver/alsa-kernel/pci/au88x0/au88x0_eq.h	14 Jan 2006 03:43:23
-0000
@@ -13,18 +13,18 @@
 typedef struct {
 	u16 LeftCoefs[50];	//0x4
 	u16 RightCoefs[50];	// 0x68
-	u16 LeftGains[20];	//0xd0
-	u16 RightGains[20];	//0xe4
+	u16 LeftGains[10];	//0xd0
+	u16 RightGains[10];	//0xe4
 } auxxEqCoeffSet_t;
 
 typedef struct {
-	u32 ptr_this00;		/*CAsp4HwIO */
+//	u32 ptr_this00;		/*CAsp4HwIO */
 	s32 this04;		/* How many filters for each side (default = 10) */
 	s32 this08;		/* inited to cero. Stereo flag? */
 } eqhw_t;
 
 typedef struct {
-	u32  ptr_this00;	/*CAsp4Core */
+//	u32  ptr_this00;	/*CAsp4Core */
 	eqhw_t this04;		/* CHwEq */
 	u16 this08;		/* Bad codec flag ? SetBypassGain: bypass gain */
 	u16 this0a;
@@ -32,8 +32,7 @@
 	u16 this0e;
 
 	s32 this10;		/* How many gains are used for each side (right or left).
*/
-	u16 this14_array[32];	/* SetLeftGainsTarget: Left (and right?) EQ gains 
*/
-	s32 this24;
+	u16 this14_array[10];	/* EQ ByPass Gain */
 	s32 this28;		/* flag related to EQ enabled or not. Gang flag ? */
 	s32 this54;		/* SetBypass */
 	s32 this58;

Issue History
Date Modified  Username       Field                    Change              
======================================================================
04-12-05 20:43 alien999999999 New Issue                                    
04-12-05 20:43 alien999999999 Distribution              => Mandrake        
04-12-05 20:43 alien999999999 Kernel Version            => 2.6.7           
04-12-05 20:48 alien999999999 Note Added: 0004461                          
04-12-05 20:49 alien999999999 File Added: au88x0.c                         
04-12-05 20:49 alien999999999 File Added: au88x0.h                         
04-12-05 20:50 alien999999999 File Added: au88x0_core.c                    
04-12-05 20:50 alien999999999 File Added: au88x0_mixer.c                    
04-12-05 20:51 alien999999999 Note Added: 0004462                          
08-24-05 11:13 Raymond        Note Added: 0005928                          
10-27-05 02:27 Raymond        Note Added: 0006564                          
01-03-06 04:04 Raymond        Note Added: 0007397                          
01-04-06 22:08 alien999999999 Note Added: 0007455                          
01-05-06 07:21 Raymond        Note Added: 0007462                          
01-05-06 20:32 shurick        Issue Monitored: shurick                     
01-06-06 17:17 alien999999999 Note Added: 0007488                          
01-06-06 17:33 alien999999999 File Added: alsa-cvs-2006-01-04.patch             
      
01-13-06 13:51 Raymond        Note Added: 0007639                          
01-13-06 18:18 tiwai          Note Added: 0007648                          
01-14-06 04:53 Raymond        Note Added: 0007653                          
======================================================================




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