On Mon, 2010-02-22 at 23:51 +0000, Fernando Lopez-Lezcano wrote:
> On Tue, 2010-02-16 at 17:58 -0800, Fernando Lopez-Lezcano wrote:
> > Hey, has anyone been seeing strange behavior from this combination?
> >
> > kernel 2.6.31.x rt20 + alsa 1.0.22 userland
> > RME card (pcmcia card + multiface)
> >
> > hdspmixer is not doing the right thing (does not initialize the card in
> > a way in which playback works), it does not see the hwdep interface (or
> > something like that) and disables metering,
>
> This is what hdspmixer prints when I attempt to run it:
>
> ----
> $ hdspmixer
>
> HDSPMixer 1.6 - Copyright (C) 2003 Thomas Charbonnel <thomas@email-addr-hidden>
> This program comes with ABSOLUTELY NO WARRANTY
> HDSPMixer is free software, see the file COPYING for details
>
> Looking for HDSP cards :
> Card 0 : HDA Intel at 0xfe020000 irq 17
> Card 1 : RME Hammerfall DSP + Multiface at 0xc0000000, irq 16
> Multiface found !
> 1 Hammerfall DSP card found.
> Initializing default presets
> HwDep ioctl failed. Metering stopped
> ----
And this is what strace says:
---- open("/dev/snd/controlC1", O_RDONLY|O_CLOEXEC) = 5 fcntl64(5, F_SETFD, FD_CLOEXEC) = 0 ioctl(5, UI_DEV_CREATE, 0xbff6aef4) = 0 close(5) = 0 open("/dev/snd/hwC1D0", O_RDONLY|O_CLOEXEC) = 5 fcntl64(5, F_SETFD, FD_CLOEXEC) = 0 ioctl(5, 0x80044800, 0xbff6b270) = 0 ioctl(5, SNDRV_HDSP_IOCTL_GET_PEAK_RMS, 0xbff6b57c) = -1 EINVAL (Invalid argument) write(2, "HwDep ioctl failed. Metering sto"..., 37HwDep ioctl failed. Metering stopped ) = 37 close(5) = 0 ---- -- Fernando > > alsamixer even segfaults > > when I reach the end of the controls listed. Plain weird. Smells like > > something changed deep in the kernel that makes alsa-lib very unhappy. > > Alsa-tools rebuilt from source does not make a difference. > > > > Weirdness goes away when I boot into 2.6.29.6 rt23... > > > > Is there anything in alsa-* that depends on which _kernel_ is available > > at compile time? > > I have been trying to see if I can figure _anything_ out of this... > > A diff of 2.6.29 (last known working) against 2.6.31.12 reveals > something that might have an influence on the problem: > > in snd_hdsp_create_hwdep there are two lines added: > > + hw->ops.open = snd_hdsp_hwdep_dummy_op; > hw->ops.ioctl = snd_hdsp_hwdep_ioctl; > + hw->ops.release = snd_hdsp_hwdep_dummy_op; > > And snd_hdsp_hwdep_dummy_op just returns 0... > > Other differences between the two files (not that many) seem irrelevant > to me. > > I imagine this is what is causing the difference in behavior (hwdep > fails). Any suggestions on what I could try to fix this? > > Thanks for any help! > > -- Fernando > > > _______________________________________________ > Alsa-devel mailing list > Alsa-devel@email-addr-hidden-project.org > http://mailman.alsa-project.org/mailman/listinfo/alsa-devel _______________________________________________ Linux-audio-dev mailing list Linux-audio-dev@email-addr-hidden http://lists.linuxaudio.org/listinfo/linux-audio-devReceived on Tue Feb 23 04:15:02 2010
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