[alsa-devel] function snd_mixer_load failed: Inappropriate ioctl for device

[Takashi Iwai]

At Mon, 24 Dec 2007 23:29:52 -0300,
Salatiel Filho wrote:
> 
> On 12/17/07, Takashi Iwai <tiwai at suse.de> wrote:
> > At Wed, 12 Dec 2007 21:45:26 -0300,
> > Salatiel Filho wrote:
> > >
> > > ***  please let me in the to or cc fields. I am not on the list ***
> > >
> > > I am having a big trouble to make sound work on my ARM machine. I am
> > > running debian 4.
> > >
> > >
> > >
> > > #  uname -a
> > > Linux LS-GL7D6 2.6.16.57-arm2 #7 Wed Dec 12 18:14:51 BRT 2007
> > > armv5tejl GNU/Linux
> > >
> > > # cat /proc/asound/version
> > > Advanced Linux Sound Architecture Driver Version 1.0.15.
> > > Compiled on Dec 12 2007 for kernel 2.6.16.57-arm2.
> > >
> > >
> > > Modules load successfully
> > >
> > > # lsmod
> > > Module                  Size  Used by
> > > snd_pcm_oss            47680  0
> > > snd_mixer_oss          15040  1 snd_pcm_oss
> > > snd_usb_audio          79904  0
> > > snd_pcm                75877  2 snd_pcm_oss,snd_usb_audio
> > > snd_timer              20164  1 snd_pcm
> > > snd_page_alloc          8264  1 snd_pcm
> > > snd_usb_lib            15808  1 snd_usb_audio
> > > snd_rawmidi            21376  1 snd_usb_lib
> > > snd_seq_device          7116  1 snd_rawmidi
> > > snd_hwdep               7460  1 snd_usb_audio
> > > snd                    54368  9
> > > snd_pcm_oss,snd_mixer_oss,snd_usb_audio,snd_pcm,snd_timer,snd_usb_lib,snd_rawmidi,snd_seq_device,snd_hwdep
> > > soundcore               7684  1 snd
> > > nfs                   102044  0
> > > lockd                  61780  1 nfs
> > > sunrpc                142808  3 nfs,lockd
> > > dm_mod                 48176  0
> > > usbhid                 38628  0
> > >
> > >
> > >
> > > # cat /proc/asound/cards
> > >  0 [default        ]: USB-Audio - C-Media USB Headphone Set
> > >                      C-Media USB Headphone Set   at
> > > usb-ehci_platform.4523-1, full speed
> > >
> > >
> > > # cat /proc/asound/version
> > > Advanced Linux Sound Architecture Driver Version 1.0.15.
> > > Compiled on Dec 12 2007 for kernel 2.6.16.57-arm2.
> > >
> > > but everytime i try to use alsamixer i get:
> > >
> > >
> > > # alsamixer
> > > alsamixer: function snd_mixer_load failed: Inappropriate ioctl for device
> > >
> > > # aplay test.wav
> > > Playing WAVE 'test.wav' : Unsigned 8 bit, Rate 8000 Hz, Mono
> > > aplay: xrun:1090: read/write error, state = PREPARED
> > >
> > >
> > > # strace alsamixer
> > > ...
> > > stat64("/usr//share/alsa/alsa.conf", {st_mode=S_IFREG|0644,
> > > st_size=8611, ...}) = 0
> > > open("/usr//share/alsa/alsa.conf", O_RDONLY) = 3
> > > fstat64(3, {st_mode=S_IFREG|0644, st_size=8611, ...}) = 0
> > > mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
> > > 0) = 0x40017000
> > > read(3, "#\n#  ALSA library configuration "..., 4096) = 4096
> > > read(3, "r\n\t\t\t\tname defaults.pcm.device\n\t"..., 4096) = 4096
> > > read(3, "{\n\t\t\t at func refer\n\t\t\tname default"..., 4096) = 419
> > > read(3, "", 4096)                       = 0
> > > read(3, "", 4096)                       = 0
> > > close(3)                                = 0
> > > munmap(0x40017000, 4096)                = 0
> > > access("/etc/asound.conf", R_OK)        = -1 ENOENT (No such file or directory)
> > > access("/root/.asoundrc", R_OK)         = -1 ENOENT (No such file or directory)
> > > open("/dev/snd/controlC0", O_RDONLY)    = 3
> > > close(3)                                = 0
> > > open("/dev/snd/controlC0", O_RDWR)      = 3
> > > ioctl(3, USBDEVFS_CONTROL, 0xbec2da64)  = 0
> > > ioctl(3, UI_DEV_CREATE, 0xbec2db2c)     = 0
> > > close(3)                                = 0
> > > stat64("/usr//share/alsa/alsa.conf", {st_mode=S_IFREG|0644,
> > > st_size=8611, ...}) = 0
> > > open("/dev/snd/controlC0", O_RDONLY)    = 3
> > > close(3)                                = 0
> > > open("/dev/snd/controlC0", O_RDWR)      = 3
> > > ioctl(3, USBDEVFS_CONTROL, 0xbec2da44)  = 0
> > > fcntl64(3, F_GETFL)                     = 0x2 (flags O_RDWR)
> > > fcntl64(3, F_SETFL, O_RDWR|O_NONBLOCK)  = 0
> > > ioctl(3, USBDEVFS_RELEASEINTERFACE, 0xbec2dac0) = 0
> > > ioctl(3, USBDEVFS_RELEASEINTERFACE, 0xbec2dac0) = 0
> > > ioctl(3, USBDEVFS_CONNECTINFO, 0xbec2d86c) = 0
> > > ioctl(3, USBDEVFS_IOCTL, 0xbec2d42c)    = -1 ENOTTY (Inappropriate
> > > ioctl for device)
> > > fstat64(1, {st_mode=S_IFCHR|0620, st_rdev=makedev(136, 2), ...}) = 0
> > > mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1,
> > > 0) = 0x40017000
> > > write(1, "\n", 1
> > > )                       = 1
> > > write(2, "alsamixer: function snd_mixer_lo"..., 74alsamixer: function
> > > snd_mixer_load failed: Inappropriate ioctl for device
> > > ) = 74
> > > munmap(0x40017000, 4096)                = 0
> > > io_submit(0x2, 0, 0x8 <unfinished ... exit status 2>
> > >
> > >
> > > any help?
> > >
> > >
> > >
> > > The same card works ok on my x86 machine using . So the problem is not
> > > the card but something else.
> >
> > Likely the difference of struct size due to different compiler or
> > compiler options.
> >
> >
> > Takashi
> >
> 
> I have compiled kernel/alsa drivers/alsa mixer using the same compiler
> on the same machine.

Hm, but the strace indicates something like the struct size mismatch.
Try to build with --with-debug=detect option and see the kernel
message.


Takashi