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@xxxxxxxxxx> 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 ---- > 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@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
