[alsa-devel] Unable to play aplay

Nitin Mahajan nitinm76 at yahoo.com
Tue Sep 16 13:45:54 CEST 2008 

HI!



----- Original Message ----
> From: vasudha rao <vasudha.jrao at gmail.com>
> To: aggarwal <anuj.aggarwal at gmail.com>
> Cc: alsa-devel at alsa-project.org
> Sent: Tuesday, September 16, 2008 17:08:30
> Subject: Re: [alsa-devel] Unable to play aplay
> 
> I inserted modules to my linux kernel (2.6.20)like..
> 
> $insmod snd.ko
> $insmod snd-timer.ko
> $insmod snd-page-alloc.ko
> $insmod snd-pcm.ko
> $insmod ac97_bus.ko
> $insmod snd-ac97-codec.ko
> $insmod snd-at91-ac97.ko
> 
> After this, I am getting,
> 
> $aplay
> 
> No error messages..
> 
> $aplay laughter.wav
> Playing WAVE 'laughter.wav' : Unsigned 8 bit, Rate 8000 Hz, Mono
> Bad pte = 5fc3e05f, process = aplay, vm_flags = 800fb, vaddr = 4032c000
> Bad pte = 5fc3f05f, process = aplay, vm_flags = 800fb, vaddr = 4032d000
> Unable to handle kernel paging request at virtual address ff800001
> pgd = c346c000
> [ff800001] *pgd=00000000
> Internal error: Oops: 1 [#1]
> Modules linked in: snd_at91_ac97 snd_ac97_codec ac97_bus snd_pcm
> snd_page_alloc snd_timer snd
> CPU: 0
> PC is at snd_pcm_mmap_data_nopage+0xc4/0xe8 [snd_pcm]
> LR is at 0x4032e000
> pc : []    lr : [<4032e000>]    Not tainted
> sp : c3bb3e6c  ip : ff7ffffd  fp : c3bb3e80
> r10: 4032e000  r9 : c001f380  r8 : c3bb2000
> r7 : c3449764  r6 : 00000000  r5 : c3bb3ea0  r4 : c34a8c00
> r3 : 00000093  r2 : 00000013  r1 : 00006000  r0 : c0aa3800
> Flags: nzcv  IRQs off  FIQs on  Mode SVC_32  Segment user
> Control: 5317F
> Table: 2346C000  DAC: 00000015
> Process aplay (pid: 916, stack limit = 0xc3bb2250)
> Stack: (0xc3bb3e6c to 0xc3bb4000)
> 3e60:                            00000000 c3e192ec c3bb3ecc c3bb3e84
> c0067c58
> 3e80: bf019030 c346d008 c001f3c0 5fc3f05f 00000000 00000000 c346d008
> 00000000
> 3ea0: 00000002 ffffffeb c3d2b040 c3449764 c001f380 c001f3b4 c3bb3fb0
> 4032e000
> 3ec0: c3bb3f04 c3bb3ed0 c00293a4 c0067b2c 00022b70 00000000 00000017
> ffffffff
> 3ee0: c027900c 00000017 c3bb3fb0 4032e000 40388000 400cb5fc c3bb3fac
> c3bb3f08
> 3f00: c00295c0 c00292dc c3bb3f2c c0377f20 ffffffe7 c0844123 00000000
> c0023ec4
> 3f20: 400cb5fc c3bb3f40 c3bb3f34 bf018af4 bf018194 c3bb3f5c c3bb3f44
> c00823d0
> 3f40: bf018ad0 c0377f20 00022b70 00000004 c3bb3f84 c3bb3f60 c00826ac
> c00823a4
> 3f60: 000014c2 ffffffff c3bb3fac c3bb3f78 c01f7ee0 c00275a8 c3d2b080
> c3d2b154
> 3f80: 0082ca24 ffffffff 40388734 ffffffff 40389734 00000008 00000004
> 00000004
> 3fa0: 00000000 c3bb3fb0 c0023cc8 c0029594 00000000 4032e000 40354000
> 00000100
> 3fc0: 00006800 40389734 00000008 00000004 00000004 40388000 400cb5fc
> 00006dcd
> 3fe0: 00000100 bea539d0 00000100 4008ce20 20000010 ffffffff 00000000
> 00000029
> Backtrace:
> [] (snd_pcm_mmap_data_nopage+0x0/0xe8 [snd_pcm]) from []
> (__handle_mm_fault+0x13c/0x760)
> r5 = C3E192EC  r4 = 00000000
> [] (__handle_mm_fault+0x0/0x760) from []
> (do_page_fault+0xd8/0x20c)
> [] (do_page_fault+0x0/0x20c) from []
> (do_DataAbort+0x3c/0xa0)
> [] (do_DataAbort+0x0/0xa0) from []
> (ret_from_exception+0x0/0x10)
> r8 = 00000004  r7 = 00000004  r6 = 00000008  r5 = 40389734
> r4 = FFFFFFFF
> Code: 1590c00c e10f2000 e3823080 e121f003 (e59c3004)
> Segmentation fault
> 
> 
> $aplay -l
> card 0: AC97 [Atmel AC97], device 0: Atmel AC97 [Atmel AC97]
>   Subdevices: 1/1
>   Subdevice #0: subdevice #0
> 
> $arecord
> ALSA lib pcm_dmix.c:812:(snd_pcm_dmix_open) The dmix plugin supports only
> playback stream
> arecord: main:446: audio open error: Invalid argument
> 
> $arecord -l
> 
As far as arecord  is concerned,check if your codec chip has an ADC, what mixer controls are available for recording? Are u setting them ?

> No message here..
> 
> $cat /proc/asound/pcm
> 00-00: Atmel AC97 : Atmel AC97 : playback 1
> 
> Why I am not able to here or record sound..??
> Where I am doing wrong...??
> 
> Thank you..
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> On Thu, Sep 11, 2008 at 10:46 AM, vasudha rao wrote:
> 
> > Hi anuj ,
> >
> > Sorry my mistake..that time I hav not loaded conf files in /usr/share/ .. I
> > loaded now..
> > So now when I give command like,
> >
> > -------------------------------------------------
> > $aplay -l
> > **** List of PLAYBACK Hardware Devices ****
> > card 0: AC97 [Atmel AC97], device 0: Atmel AC97 [Atmel AC97]
> > Subdevices: 1/1
> > Subdevice #0: subdevice #0
> > ---------------------------------------------------
> >
> > but,aplay not proper,,
> > ----------------------------
> > $aplay
> > aplay: main:508: audio open error: Inappropriate ioctl for device
> > ----------------------------
> >
> > Where I am doing wrong..??
> >
> > Thank you..
> >
> > On Thu, Sep 11, 2008 at 10:07 AM, vasudha rao wrote:
> >
> >>
> >>
> >>
> >> Hi Anuj,
> >>
> >> Nodes were not there before..I created now..
> >>
> >> Now when I did $aplay -l ,
> >> I got,
> >>
> >>  **** List of PLAYBACK Hardware Devices ***
> >> *ALSA lib control.c:739:(snd_ctl_open_noupdate) Invalid CTL hw:0
> >> aplay: device_list:208: control open (0): No such file or directory
> >> aplay: conf.c:3083: snd_config_update_free: Assertion `update->count > 0
> >> && update->finfo' failed.Aborted
> >>
> >> Where I am doing wrong..??
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >> Thank you..
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >> On Wed, Sep 10, 2008 at 11:54 PM, anuj aggarwal 
> wrote:
> >>
> >>> Vasudha,
> >>>
> >>> Could you please check the device nodes in /dev/snd folder? The
> >>> desired output is:
> >>>
> >>> [root@ /home]# ls -l /dev/snd/
> >>> crw-rw----    1 root     root     116,   5 Jan  1 00:00 controlC0
> >>> crw-rw----    1 root     root     116,   4 Jan  1 00:00 pcmC0D0c
> >>> crw-rw----    1 root     root     116,   3 Jan  1 00:00 pcmC0D0p
> >>>
> >>> If the nodes are not there, you have to create them first before trying
> >>> aplay.
> >>>
> >>> Regards,
> >>> Anuj
> >>>
> >>>
> >>> On Wed, Sep 10, 2008 at 6:16 PM, vasudha rao 
> >>> wrote:
> >>> >
> >>> > Hi ,
> >>> >
> >>> > I want to play and record audio file in my custom atmel 9263 board
> >>> running
> >>> > with linux(2.6.20).
> >>> > when I tried to play aplay for a wave file, I got
> >>> >
> >>> > $aplay /home/alarm.wav
> >>> > ALSA lib pcm.c:1707:(snd_pcm_open_noupdate) Unknown PCM default
> >>> > aplay: main:446: audio open error: No such file or directory
> >>> >
> >>> > $aplay -l
> >>> > aplay: device_list:187: no soundcards found...
> >>> >
> >>> > $cat /proc/asound/devices
> >>> >  2:        : timer
> >>> >  3:        : sequencer
> >>> >  4: [ 0- 0]: digital audio playback
> >>> >  5: [ 0]   : control
> >>> >
> >>> > Can you tel me where I am doing wrong..??
> >>> >
> >>> > Thanks in advance..
> >>> > _______________________________________________
> >>> > Alsa-devel mailing list
> >>> > Alsa-devel at alsa-project.org
> >>> > http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
> >>>
> >>>
> >>>
> >>> --
> >>> Best Regards,
> >>> Anuj Aggarwal
> >>>
> >>
> >>
> >
> _______________________________________________
> Alsa-devel mailing list
> Alsa-devel at alsa-project.org
> http://mailman.alsa-project.org/mailman/listinfo/alsa-devel



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