Re: [Alsa-user] Slot assignment not working
> > Paul D. DeRocco wrote: > > Can this parameter be supplied on the kernel command line > > as snd.slots=...? > From: Clemens Ladisch via Alsa-user > > Yes; this is possible for all parameters. My first try was to leave snd as a built-in module, and pass the slots parameter via the kernel command line: snd.slots=snd-soc-hifiberry-dacplus,vc4,snd-bcm2835,snd-usb-audio It showed up correctly in /proc/cmdline, but was totally ignored. All of the slots were still wrong. I recompiled the kernel with snd as a module, put the options back into /etc/modprobe.d/alsa.conf, and it worked, basically. However, what I thought was called vc4 (the HDMI sound) didn't get assigned to slot 1. But slot 1 was still reserved, so the two USB MIDI ports took slots 3 and 4, and the HDMI ended up in slot 5. Does anyone know the name of the Raspberry Pi HDMI sound device? udevadm info shows a driver name of "vc4_hdmi" and an id attribute of "vc4hdmi". lsmod only lists "vc4", nothing else with "vc4" in it. alsamixer shows "vc4-hdmi". None of these names in the slots option made any difference. When I read /proc/asound/modules, I get this: 0 snd_soc_hifiberry_dacplus 2 snd_bcm2835 3 snd_usb_audio 4 snd_usb_audio 5 (null) Yet vc4 is indeed a loadable module, according to modinfo. Any ideas why it appears to have no name to ALSA? -- Ciao, Paul D. DeRocco Paulmailto:pdero...@ix.netcom.com -- Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot ___ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
Re: [Alsa-user] Slot assignment not working
Paul D. DeRocco wrote: > Can this parameter be supplied on the kernel command line as snd.slots=...? Yes; this is possible for all parameters. Regards, Clemens -- Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot ___ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
Re: [Alsa-user] Slot assignment not working
On Sun, 8 Oct 2017 11:44:06 -0700, Paul D. DeRocco wrote: >> From: Clemens Ladisch via Alsa-user >> >> > I tried the following, and nothing changed: >> > >> > options snd cards_limit=8 \ >> > slots=snd-soc-hifiberry-dacplus,vc4,snd-bcm2835,snd-usb-audio >> >> Are these drivers actually compiled as modules? >> Are the names the same as in /proc/asound/modules? > >The subsidiary ones are, but snd isn't. Can this parameter be supplied >on the kernel command line as snd.slots=...? Or would it be better to >recompile the kernel with snd as a module? If so, what's the CONFIG_ >symbol? Probably it's [rocketmouse@archlinux ~]$ zgrep -i snd /proc/config.gz | head -1 CONFIG_SND=m https://cateee.net/lkddb/web-lkddb/SND.html -- Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot ___ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
Re: [Alsa-user] Slot assignment not working
> From: Clemens Ladisch via Alsa-user > > > I tried the following, and nothing changed: > > > > options snd cards_limit=8 \ > > slots=snd-soc-hifiberry-dacplus,vc4,snd-bcm2835,snd-usb-audio > > Are these drivers actually compiled as modules? > Are the names the same as in /proc/asound/modules? The subsidiary ones are, but snd isn't. Can this parameter be supplied on the kernel command line as snd.slots=...? Or would it be better to recompile the kernel with snd as a module? If so, what's the CONFIG_ symbol? -- Ciao, Paul D. DeRocco Paulmailto:pdero...@ix.netcom.com -- Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot ___ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
Re: [Alsa-user] Slot assignment not working
Paul D. DeRocco wrote: >> Anyway, that slots options specifies only two slots. >> If you have five devices, it's a better idea to specify five slots. > > What I have is three devices that always exist, one of which is the > Hifiberry DAC that I want to use, and the others are the PWM audio and the > HDMI audio. Then there are the unknown number of MIDI devices that someone > might plug in. I tried specifying various cards_limit values. cards_limit is not related with that. > I tried the following, and nothing changed: > > options snd cards_limit=8 \ > slots=snd-soc-hifiberry-dacplus,vc4,snd-bcm2835,snd-usb-audio Are these drivers actually compiled as modules? Are the names the same as in /proc/asound/modules? > This is really behaving as though "snd" isn't the right device name to > address the slots option to. Check in /sys/module/snd/parameters/slots. Regards, Clemens -- Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot ___ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
Re: [Alsa-user] Slot assignment not working
> From: Clemens Ladisch via Alsa-user > > Paul D. DeRocco wrote: > >> Paul D. DeRocco wrote: > >>> options snd slots=snd-soc-hifiberry-dacplus,snd-usb-audio > >>> > >>> midiC0D0 a USB MIDI device > >>> midiC1D0 another USB MIDI device > >>> pcmC2D0p and pcmC2D1p on-board crappy PWM audio > >>> pcmC3D0p Hifiberry DAC > >>> pcmC4D0p HDMI audio > >> > >> Show your entire alsa.conf. > > > > I did. The one-liner you just quoted is all I used to need. > > In theory, it should not be possible for snd-usb-audio to > grab the first slot. > Are you sure there isn't any other "options snd" line in some > .conf file? There are no other files in /etc/modprobe.d, and no /etc/modprobe.conf file. There is a /lib/modprobe.d directory, although such a directory isn't mentioned in the relevant man pages, but it's empty anyway. > Anyway, that slots options specifies only two slots. > If you have five devices, it's a better idea to specify five slots. What I have is three devices that always exist, one of which is the Hifiberry DAC that I want to use, and the others are the PWM audio and the HDMI audio. Then there are the unknown number of MIDI devices that someone might plug in. I tried specifying various cards_limit values. I tried the following, and nothing changed: options snd cards_limit=8 \ slots=snd-soc-hifiberry-dacplus,vc4,snd-bcm2835,snd-usb-audio (vc4 is the HDMI, apparently). This is really behaving as though "snd" isn't the right device name to address the slots option to. -- Ciao, Paul D. DeRocco Paulmailto:pdero...@ix.netcom.com -- Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot ___ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
Re: [Alsa-user] Slot assignment not working
Paul D. DeRocco wrote: >> Paul D. DeRocco wrote: >>> options snd slots=snd-soc-hifiberry-dacplus,snd-usb-audio >>> >>> midiC0D0 a USB MIDI device >>> midiC1D0 another USB MIDI device >>> pcmC2D0p and pcmC2D1p on-board crappy PWM audio >>> pcmC3D0p Hifiberry DAC >>> pcmC4D0p HDMI audio >> >> Show your entire alsa.conf. > > I did. The one-liner you just quoted is all I used to need. In theory, it should not be possible for snd-usb-audio to grab the first slot. Are you sure there isn't any other "options snd" line in some .conf file? Anyway, that slots options specifies only two slots. If you have five devices, it's a better idea to specify five slots. Regards, Clemens -- Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot ___ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
Re: [Alsa-user] Slot assignment not working
> From: Clemens Ladisch via Alsa-user > > Paul D. DeRocco wrote: > > options snd slots=snd-soc-hifiberry-dacplus,snd-usb-audio > > > > midiC0D0 a USB MIDI device > > midiC1D0 another USB MIDI device > > pcmC2D0p and pcmC2D1p on-board crappy PWM audio > > pcmC3D0p Hifiberry DAC > > pcmC4D0p HDMI audio > > Show your entire alsa.conf. I did. The one-liner you just quoted is all I used to need. The three-liner just added some test stuff to prove that modprobe was installing drivers. -- Ciao, Paul D. DeRocco Paulmailto:pdero...@ix.netcom.com -- Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot ___ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
Re: [Alsa-user] Slot assignment not working
Paul D. DeRocco wrote: > options snd slots=snd-soc-hifiberry-dacplus,snd-usb-audio > > midiC0D0 a USB MIDI device > midiC1D0 another USB MIDI device > pcmC2D0p and pcmC2D1p on-board crappy PWM audio > pcmC3D0p Hifiberry DAC > pcmC4D0p HDMI audio Show your entire alsa.conf. Regards, Clemens -- Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot ___ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
[Alsa-user] Slot assignment not working
(Yocto-based embedded Linux on Raspberry Pi) I used to be able to get card numbers assigned by creating an /etc/modprobe.d/alsa.conf file containing: options snd slots=snd-soc-hifiberry-dacplus,snd-usb-audio and I would wind up with my DAC as card 0, followed by any USB devices that happened to be plugged in. When I switched from Yocto Morty to Pyro, going from alsa-lib 2.1.1 to 2.1.2 and kernel 4.8 to 4.9, this stopped working. (Admittedly, other things changed, too.) To figure it out, I tried this alsa.conf: options snd cards_limit=8 slots=snd-soc-hifiberry-dacplus,snd-usb-audio install snd-soc-hifiberry-dacplus \ echo 'Installing snd-soc-hifiberry-dacplus'; \ /sbin/modprobe --ignore-install snd-soc-hifiberry-dacplus install snd-usb-audio \ echo 'Installing snd-usb-audio'; \ /sbin/modprobe --ignore-install snd-usb-audio I do indeed see the messages in the log, so those names are being recognized. The sound is working (although with an unpredictable card number) so the drivers are loaded. But my slot assignments are: midiC0D0 a USB MIDI device midiC1D0 another USB MIDI device pcmC2D0p and pcmC2D1p on-board crappy PWM audio pcmC3D0p Hifiberry DAC pcmC4D0p HDMI audio The last two can be in either order. So it appears the slots option to the snd module doesn't do anything. I tried adding the cards_limit parameter with various values, and that changed nothing. I also tried adding the index parameter as an option to the individual drivers, but the hifiberry doesn't understand it. Did something change in 2.1.2? Or am I doing something wrong? Is "snd" no longer the name of the top level ALSA sound module? I don't see it listed in lsmod. -- Ciao, Paul D. DeRocco Paulmailto:pdero...@ix.netcom.com -- Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot ___ Alsa-user mailing list Alsa-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/alsa-user
