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Alsa pcm type

I t also performs c rkhunter --check # Check the backdoors and security.chkrootkit is a tool to locally check for sig ns of a rootkit. chkrootkit -x | less # How to check webserver by Nikto nikto.pl -h yourwebserver # Securely edit the sudo file over the network visudo # Securely look at the group file over the network vigr # Securely seeing ... # 2- Modify the bottom part of the file to match your hardware pcm.!default { type plug slave { pcm "both_digital" } } # First we create a 'both' route, that has 12 channels pcm.both_digital { type route slave { pcm multi channels 12 } # And we route the channels 1:1 # 6 inputs (0-5) get mapped into 12 outputs (0-11) # (this is how we copy ...

May 26, 2011 · [[email protected] ~]# cat /etc/asound.conf # Traktor Audio 6 pcm.T6_capture { type dsnoop ipc_key 1646 slave { pcm "hw:T6" period_size 0 buffer_size 65536 rate 44100 channels 6 } } pcm.T6_playback { type dmix ipc_key 1646 slave { pcm "hw:T6" period_size 0 buffer_size 65536 rate 44100 channels 6 } } pcm.T6_duplex { type asym playback.pcm T6_playback capture.pcm T6_capture } pcm.T6_pair1 { type plug ...

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From: Samu Nuutamo <[email protected]> [ Upstream commit 333e22db228f0bd0c839553015a6a8d3db4ba569 ] When tsi-as-adc is configured it is possible for in7[0123 ...
Jul 17, 2014 · With the 30+ sliders in the ALSA Mixer on the capture screen alasmixer -V capture, I have no idea how to translate this to match the setup. ... pcm.onboard{ type hw ...
defaults.ctl.card 2; defaults.pcm.card 2; or specify sound card module order in /etc/modprobe.d/alsa.conf: options snd_usb_audio index=0 Dmix. The dmix ALSA plugin allows playing sound from multiple sources. dmix is enabled by default for soundcards which do not support hardware mixing. To enable it for digital output, edit /etc/asound.conf:
The Advanced Linux Sound Architecture (ALSA) is the standard audio API of Linux as of kernel version 2.6. It is a higher-level API than its predecessor, the Open Sound System (OSS) and requires...
## Read alsa-driver's INSTALL file in /usr/share/doc for more info. ## ## ALSA portion /* This line must be changed so that snd-cmipci will have your sound card type in it. For information check the ALSA web site product matrix under details which will give you this information. If you built ALSA and specified you card this will already be ...
The Advanced Linux Sound Architecture (ALSA) provides audio and MIDI functionality to the Linux operating system. This package includes the ALSA runtime libraries to simplify application programming and provide higher level functionality as well as support for the older OSS API, providing binary compatibility for most OSS programs.
Aug 15, 2015 · 第1回 カーネル/VM名古屋での発表 あまり語られる事の無いALSAの機能 ALSA Sequencerを使ってYM2413のドライバを書きます
To get tthe jack plug in working I followed the instructions on the alsa wiki (http://www.alsa-project.org/alsa-doc/doc-php/asoundrc.php#jackplug and somewhere I lost track of), and created a .asoundrc : pcm.!default { type plug slave { pcm "jack" } } pcm.jack { type jack playback_ports { 0 alsa_pcm:playback_1 1 alsa_pcm:playback_2 }
After updating bluez-alsa from 2.0.0 to 2.1.0 my bluetooth audio device is no longer available in JACK, so I can't play sound using the JACK backend (ALSA is working fine). I'm running a JACK server with...
Sep 04, 2018 · From: Takashi Iwai <> Subject [PATCH 20/29] staging: bcm2835-audio: Operate non-atomic PCM ops: Date: Tue, 4 Sep 2018 17:58:49 +0200
When OSMC is ready again, go to System -> Settings -> System -> Audio output and select Audio output device=ALSA: Loopback (loopin), Loopback PCM. This will stop the sound coming via the normal HDMI or analogue output. Start the streaming by running this command:
pcm.pc { type hw card 1 } 動作確認。ログインしなおしたりする必要はない。 $ aplay -D pc /tmp/desktop-login.wav あとは !default をループバックデバイスにする。rateやipc_keyは状況に応じて変更する。 詳しくは覚えていないが、今は以下のようになっている。
After updating bluez-alsa from 2.0.0 to 2.1.0 my bluetooth audio device is no longer available in JACK, so I can't play sound using the JACK backend (ALSA is working fine). I'm running a JACK server with...
Mar 30, 2017 · ALSA lib pcm_hw.c:1701:(_snd_pcm_hw_open) Invalid value for card I am on Fedora 25 which is using PulseAudio. As far as I can gather from this error, it's that something is attempting to initialise the card/device in the wrong order.
pcm.asym_spdif { type asym playback.pcm "spdif_playback" capture.pcm "plughw:0"} pcm.asym_analog { type asym playback.pcm "plug:dmix" capture.pcm "plughw:0"} pcm.!default asym_spdif The outstanding things are to work out whether this config is actually changing what ALSA does, as I cannot find any log files that say anything one way or the other.
type - can be either PCM_CAPTURE or PCM_PLAYBACK (default). The ALSA mixer API is extremely complicated - and hardly documented at all. alsaaudio implements a much simplified way to...
Sep 07, 2020 · I started my review of CrowPi2 Raspberry Pi 4 Learning Kit a while ago and at the time I showed content from the kit and its first boot. I’ve now spent more time with this very special Raspberry Pi 4 laptop and will focus this review on the education part, namely CrowPi2 software, but will also look at thermal cooling under stress with and without a fan, and try to install another Raspberry ...
Pulseaudio Loopback
I'm using softvol plugin for the default ALSA device which may be the cause, because the .asoundrc file is not in effect when running from the different HOME. Custom ALSA config: $ grep -v '^#' ~/.asoundrc . pcm.!default { type asym. playback.pcm { type plug. slave.pcm "softvol" } capture.pcm { type plug. slave.pcm "hw" }} pcm.softvol { type ...
[PATCH 3/5] ALSA: pcm - fix page conversion on non-coherent MIPS arch, Takashi Iwai [PATCH 4/5] ALSA: pcm - fix page conversion on non-coherent PPC arch, Takashi Iwai [PATCH 5/5] ALSA: Remove old DMA-mmap code from arm/devdma.c, Takashi Iwai; Re: [PATCH 4/5] ALSA: pcm - fix page conversion on non-coherent PPC arch, Takashi Iwai

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So I think I need to edit an alsa conf file. The application would be like this: ... pcm.c1 { type plug ttable.0.0 1 slave.pcm capt} pcm.c2 { type plug The also-alsa Reference Manual. This is the also-alsa Reference Manual, generated automatically by Declt version 3.0 "Montgomery Scott" on Fri Jun 26 09:44:54 2020 GMT+0. ALSA: Cannot open PCM device alsa_pcm for capture. Falling back to playback-only mode configuring for 48000Hz, period = 1024 frames (21.3 ms), buffer = 2 periods Displays the current IEC958 status bits in a style of the arguments for the PCM stream. The output string can be passed to the iec958 (or spdif) PCM type as the optional argument. iecset pro off audio off Sets the current status to the consumer-mode and turns on the non-audio bit. The modified status will be shown, too. This is what I use to record my desktop & game: /ffmpeg -f alsa -ac 2 -i hw:2,1 -f x11grab -r 30 -s 1920x1080 -i :0.0 -acodec pcm_s16le -vcodec huffyuv -threads 8 output.avi/ (Using huffyuv now, because it drains less CPU than ffv1.3) With the standard setting on the *ALSA_BUFFER_SIZE_MAX* I had buffer xruns happening at around this frame ... I have a sound card that's showing up as a single card, with a single device, in alsa. I'd like to make two virtual devices, one called "input" and the other called "output". My asoundrc is currently: pcm.device{ format S24_LE rate 8000 type hw card 0 device 0 } pcm.!default{ type plug slave.pcm "device" } Nov 24, 2011 · The operational interface in /dev/ contains three main types of devices: PCM devices for recording or playing digitized sound samples, CTL devices that allow manipulating the internal mixer and routing of the card, and, MIDI devices to control the MIDI port of the card, if any.

$ aplay -l **** List of PLAYBACK Hardware Devices **** ALSA lib conf.c:3325:(snd_config_hooks_call) Cannot open shared library libasound_module_conf_pulse.so ALSA lib control.c:954:(snd_ctl_open_noupdate) Invalid CTL hw:0 aplay: device_list:277: control open (0): No such file or directory card 1: PCH [HDA Intel PCH], device 0: ALC3223 Analog [ALC3223 Analog] Subdevices: 1/1 Subdevice #0 ... The Advanced Linux Sound Architecture (ALSA) is the standard audio API of Linux as of kernel version 2.6. It is a higher-level API than its predecessor, the Open Sound System (OSS) and requires...pcm.!default { type hw card 1 } ctl.!default { type hw card 1 } If I leave the alsa.conf on 0, I am able to play something with aplay, but putting it on 1 doesn't allow me to play it (of course, because on card 1 is the mic). SNDRV_PCM_IOCTL_DELAY failed: File descriptor in bad state Message-ID: <***@bugtrack.alsa-project.org> X-Priority: 3 X-Mailer: PHPMailer [version 1.72] In the above, pcm._default is from file /usr/share/alsa/cards/HDA-Intel.conf, which correspond to my sound card; pcm.amp load the plugin and set the default amplification to be 10dB; and pcm.!default is set up, such that if the environment variable ALSA_PCM_DEFAULT is not set, pcm._default is used, and if the variable is set to jxy-amplified, pcm.amp is used. So one can start huludesktop by The port type tells what kind of device it corresponds to (speakers, headphones, microphone etc.). The type is automatically set for bluetooth and ALSA UCM devices, for non-UCM ALSA devices it's configured with the type option in the [General] section of the path configuration files. pactl list cards shows the type in the port list.

alsa-lib 1.1.8-1. links: PTS, VCS area: main; in suites: bullseye, buster, sid; size: 9,088 kB; sloc: ansic: 85,455; sh: 11,226; makefile: 914 Yes, au_alsa.c is missing in 1.3 version. I had must to add it and fit the patch. But there is another issue on configure or makefile files.-lasound is not inclued on gcc lines. ## Read alsa-driver's INSTALL file in /usr/share/doc for more info. ## ## ALSA portion /* This line must be changed so that snd-cmipci will have your sound card type in it. For information check the ALSA web site product matrix under details which will give you this information. If you built ALSA and specified you card this will already be ... E: [alsa-sink-USB Audio] alsa-sink.c: We were woken up with POLLOUT set -- however a subsequent snd_pcm_avail() returned 0 or another value < min_avail. When running with debug verbosity, it loops in a series of underruns and resets. snd_pcm_sframes_t snd_pcm_writei (snd_pcm_t * pcm, const void * buffer, snd_pcm_uframes_t size) Write interleaved frames to a PCM. If the blocking behaviour is selected and it is running, then routine waits until all requested frames are played or put to the playback ring buffer. The naming of PCM devices. A typical asoundrc starts with a "PCM hw type". This gives an ALSA application the ability to start using a special soundcard (plugin or slave) by a given name.

type asym playback.pcm {type plug slave.pcm "internal"} capture.pcm {type plug slave.pcm "usb"}} but it is not working. If I reload alsa then i cannot open alsamixer anymore( alsamixer work fine if i delete the configuration file ) : ALSA lib dlmisc.c:254snd1_dlobj_cache_get) Cannot open shared library /usr/lib/arm-linux-gnueabihf/alsa-lib ... pcm.amix { type dmix ipc_key 219345 slave.pcm "hw:Loopback,0,0" } pcm.asnoop { type dsnoop ipc_key 219346 slave.pcm "hw:Loopback,0,1" } # ----- pcm.ploop { type dmix ipc_key 219356 slave.pcm "hw:Loopback,1,1" } pcm.cloop { type dsnoop ipc_key 219348 slave.pcm "hw:Loopback,1,0" } For Linux users, ALSA gives you a lot of control and flexibility over audio devices. However, it is usually difficult to figure out exactly what needs to be done to output to multiple audio devices. In my case, I have an onboard audio device with optical digital out. Recent ALSA distributions have dmixing setup and enabled by default. Otherwise just add the following to /etc/asound.conf : pcm.dsp0 { type plug slave.pcm dmix } # mixer0 can stay unchanged, because # it isn't used anyway, I guess ;) ctl.mixer0 { type hw card 0 } pcm.amix { type dmix ipc_key 219345 slave.pcm "hw:Loopback,0,0" } pcm.asnoop { type dsnoop ipc_key 219346 slave.pcm "hw:Loopback,0,1" } # ----- pcm.ploop { type dmix ipc_key 219356 slave.pcm "hw:Loopback,1,1" } pcm.cloop { type dsnoop ipc_key 219348 slave.pcm "hw:Loopback,1,0" } For the technical details, here's my ~/.asoundrc now:. pcm.snd_card { # my usual sound card type hw card 2 } ctl.!default { # default control; alsamixer and such will use this type hw card 2 } # software mixer for sound card pcm.dmixer { type dmix ipc_key 1024 ipc_perm 0666 # allow other users slave.pcm "snd_card" slave { period_time 0 period_size 1024 buffer_size 4096 channels 2 # must match ...

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Displays the current IEC958 status bits in a style of the arguments for the PCM stream. The output string can be passed to the iec958 (or spdif) PCM type as the optional argument. iecset pro off audio off Sets the current status to the consumer-mode and turns on the non-audio bit. The modified status will be shown, too.
I t also performs c rkhunter --check # Check the backdoors and security.chkrootkit is a tool to locally check for sig ns of a rootkit. chkrootkit -x | less # How to check webserver by Nikto nikto.pl -h yourwebserver # Securely edit the sudo file over the network visudo # Securely look at the group file over the network vigr # Securely seeing ...
May 26, 2011 · [[email protected] ~]# cat /etc/asound.conf # Traktor Audio 6 pcm.T6_capture { type dsnoop ipc_key 1646 slave { pcm "hw:T6" period_size 0 buffer_size 65536 rate 44100 channels 6 } } pcm.T6_playback { type dmix ipc_key 1646 slave { pcm "hw:T6" period_size 0 buffer_size 65536 rate 44100 channels 6 } } pcm.T6_duplex { type asym playback.pcm T6_playback capture.pcm T6_capture } pcm.T6_pair1 { type plug ...
I have a sound card that's showing up as a single card, with a single device, in alsa. I'd like to make two virtual devices, one called "input" and the other called "output". My asoundrc is currently: pcm.device{ format S24_LE rate 8000 type hw card 0 device 0 } pcm.!default{ type plug slave.pcm "device" }

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defaults.ctl.card 2; defaults.pcm.card 2; or specify sound card module order in /etc/modprobe.d/alsa.conf: options snd_usb_audio index=0 Dmix. The dmix ALSA plugin allows playing sound from multiple sources. dmix is enabled by default for soundcards which do not support hardware mixing. To enable it for digital output, edit /etc/asound.conf:
To get tthe jack plug in working I followed the instructions on the alsa wiki (http://www.alsa-project.org/alsa-doc/doc-php/asoundrc.php#jackplug and somewhere I lost track of), and created a .asoundrc : pcm.!default { type plug slave { pcm "jack" } } pcm.jack { type jack playback_ports { 0 alsa_pcm:playback_1 1 alsa_pcm:playback_2 }
Oct 28, 2016 · pcm.dmixed { type dmix ipc_key 1024 ipc_key_add_uid 0 ipc_perm 0666 # mixing for all users # A adapter en fonction de la config de reconnaissance # par Pi, il se peut que l'ordre ne soit pas le m me slave.pcm { type bluealsa interface "hci0" device "00:0C:8A:6B:8E:BD" profile "a2dp" } }
type plug slave.pcm plugequal; } ctl.!default { type hw card 0 } ctl.equal { type equal; } pcm.plugequal { type equal; slave.pcm "plughw:0,0"; } pcm.equal {type plug; slave.pcm plugequal;} At /etc/mpd.conf just added the hardware volume control: audio_output {type "alsa" name "My ALSA Device" # device "hw:0,0" # optional # mixer_type "hardware" # optional
Feb 19, 2010 · [Message part 1 (text/plain, inline)] Hi, Found this bug report while googling ;) Using BT + ALSA without pulse is a PITA out of the box :( Here is a workaround using ~/.asoundrc (works with whizzy) : ##### BOF ##### pcm.btheadset { type plug slave { pcm { type bluetooth device "AA:BB:CC:DD:EE:FF" profile "auto" } } hint { show on description "BT Headset" } } ctl.btheadset { type bluetooth ...
pcm.both { #add the software volume control plugin to the chain first - creates a volume control for "everything" fed into the default alsa device type softvol slave { pcm { # add the plug plugin, the "Automatic conversion plugin" - allows a 2 channel source to feed what is technically a 4 channel plugin type plug slave { pcm {
fmt – The audio format; an instance of AudioFormat. filetype – The type of file. Must be either ‘wav’, ‘raw’, ‘voc’, or ‘au’. filename – The audio file to play. device – The PCM device name. Leave as default to use the default ALSA soundcard. aiy.voice.audio.record_file(fmt, filename, filetype, wait, device='default') ¶.
/usr/include/alsa/asoundef.h /usr/include/alsa/asoundlib.h /usr/include/alsa/conf.h /usr/include/alsa/control.h /usr/include/alsa/control_external.h /usr/include/alsa ...
slave.pcm "plughw:0,0"; # or if you want to use with multiple applications output to dmix # slave.pcm "plug:dmix"} # pcm.equal { # Or if you want the equalizer to be your # default soundcard uncomment the following # line and comment the above line. pcm.!default { type plug; slave.pcm plugequal;} Then, as root, you must do # alsa force-reload
pcm.pc { type hw card 1 } 動作確認。ログインしなおしたりする必要はない。 $ aplay -D pc /tmp/desktop-login.wav あとは !default をループバックデバイスにする。rateやipc_keyは状況に応じて変更する。 詳しくは覚えていないが、今は以下のようになっている。
I am past that now and have discovered that once the state is "SND_PCM_STATE_PREPARED" then executing snd_pcm_start() does manage to get snd_pcm_readi to read bytes (sort of), but the data seems to be garbage; the signal into line in (of the sound card) is from a guitar, but the captured .wav file (produced via snd_pcm_readi) plays as nothing ...
Jun 12, 2012 · Hello, i install Audacity the other day, and it will not start. When i open it in the konsole, i get the following. ALSA lib pcm.c:2212:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.rear ALSA lib pcm.c:2212:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.center_lfe ALSA lib pcm.c:2212:(snd_pcm_open_noupdate) Unknown PCM cards.pcm.side ALSA lib pcm_dmix.c:957:(snd_pcm_dmix_open) The dmix plugin ...
May 14, 2007 · ALSA support for the SEGA Dreamcast Yamaha AICA sound device (pcm) This patch adds ALSA sound support for pcm playback on two channels on the SEGA Dreamcast built-in sound device (the Yamaha AICA) Add driver for the AICA sound device built into the SEGA Dreamcast Hook it all up with the build system.
Sep 04, 2018 · From: Takashi Iwai <> Subject [PATCH 20/29] staging: bcm2835-audio: Operate non-atomic PCM ops: Date: Tue, 4 Sep 2018 17:58:49 +0200
ALSA lib pcm_hw.c:1713:(_snd_pcm_hw_open) Invalid value for card alsa: Could not initialize DAC alsa: Failed to open `default': alsa: Reason: No such file or directory ALSA lib pcm_hw.c:1713:(_snd_pcm_hw_open) Invalid value for card alsa: Could not initialize DAC alsa: Failed to open `default': alsa: Reason: No such file or directory audio ...
823 snd_interval_set_value(&params->intervals[SND_PCM_HW_PARAM_BUFFER_BYTES - SND_PCM_HW_PARAM_FIRST_INTERVAL], (pcm->buffer_size * frame_bits) / 8);

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2 sample z test (ti 84)Advanced Linux Sound Architecture (ALSA) is a software framework and part of the Linux kernel that provides an application programming interface (API) for sound card device drivers. Some of the goals of the ALSA project at its inception were automatic configuration of sound-card hardware and...

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ALSA snd_pcm_writei() unexpected underrun I do not know if it is hardware-related, but I am going mad about spurious underrun errors on snd_pcm_writei() calls. The same code runs without issues on my laptop.