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[Bug] Internal microphone not working on ASUS VivoBook (ALC256, Ubuntu 24.04+, kernel 6.x)
by Anas Muhamad Pauzi 03 Jun '25

03 Jun '25

Dear ALSA Developers, I'm writing to report an issue affecting the internal microphone on the ASUS VivoBook (11th Gen Intel i7, audio codec: Realtek ALC256) under Ubuntu 24.04 LTS using kernel 6.x. Summary: - Internal microphone is detected by ALSA and PipeWire (input device is listed, RUNNING state) - Volume and boost levels are at 100%, not muted - However, no sound is recorded — mic is completely silent - External USB microphones work fine on the same system What I’ve tested: - Ubuntu 24.04 default kernel 6.11 → internal mic not working - Mainline kernel 6.15 via mainline tool → still not working - Ubuntu 20.04 (kernel 5.x, likely 5.4 or 5.15 HWE) → **internal mic was working fine** This suggests a regression or pin configuration issue in recent kernels affecting ALC256 on this laptop. Here is the full ALSA info dump: https://alsa-project.org/db/?f=6d6466ba903b2e08b351046571e0fc54ddd13981 And here is the related Launchpad bug report: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/2112330 I’d be happy to test a patch or provide additional logs if needed. Many thanks for your support and your work on ALSA! Best regards, *Anas Muhamad Pauzi * ASUS VivoBook (11th Gen Intel Core i7, Realtek ALC256)

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How to know how much audio has been played?
by GitHub issues - opened 03 Jun '25

03 Jun '25

alsa-project/alsa-lib issue #458 was opened from yangyagami: I tried to get an answer from AI, but the result has discrepancies. ```cpp #include <stdio.h> #include <iostream> #include <cmath> #include <thread> #include <alsa/asoundlib.h> #define SAMPLE_RATE 44100 #define FREQUENCY 440.0 // A4 note #define DURATION 5.0 // seconds using namespace std::chrono_literals; int main() { snd_pcm_t *handle; snd_pcm_hw_params_t *params; unsigned int rate = SAMPLE_RATE; int dir; int pcm; pcm = snd_pcm_open(&handle, "default", SND_PCM_STREAM_PLAYBACK, 0); if (pcm < 0) { std::cerr << "Unable to open PCM device: " << snd_strerror(pcm) << std::endl; return 1; } snd_pcm_hw_params_alloca(&params); snd_pcm_hw_params_any(handle, params); snd_pcm_hw_params_set_access(handle, params, SND_PCM_ACCESS_RW_INTERLEAVED); snd_pcm_hw_params_set_format(handle, params, SND_PCM_FORMAT_S16_LE); snd_pcm_hw_params_set_rate_near(handle, params, &rate, &dir); snd_pcm_hw_params_set_channels(handle, params, 1); pcm = snd_pcm_hw_params(handle, params); if (pcm < 0) { std::cerr << "Unable to set HW parameters: " << snd_strerror(pcm) << std::endl; return 1; } int samples = static_cast<int>(DURATION * SAMPLE_RATE); int16_t *buffer = new int16_t[samples]; for (int i = 0; i < samples; ++i) { buffer[i] = static_cast<int16_t>(32767 * sin(2 * M_PI * FREQUENCY * i / SAMPLE_RATE)); } pcm = snd_pcm_writei(handle, buffer, samples); if (pcm < 0) { std::cerr << "Playback error: " << snd_strerror(pcm) << std::endl; } while (true) { snd_pcm_sframes_t delay; int rc = snd_pcm_delay(handle, &delay); if (rc == 0) { double played_sec = (samples - delay) / 44100.0f; printf("Played: %.2f sec\n", played_sec); } else { std::cerr << snd_strerror(rc) << std::endl; break; } } snd_pcm_drain(handle); delete[] buffer; snd_pcm_close(handle); return 0; } ``` Issue URL : https://github.com/alsa-project/alsa-lib/issues/458 Repository URL: https://github.com/alsa-project/alsa-lib

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No input from internal microphone on ASUS VivoBook (ALC256, Ubuntu 24.04, kernel 6.15)
by Anas Muhamad Pauzi 02 Jun '25

02 Jun '25

Dear ALSA Developers, I’m reporting an issue with the internal microphone on an ASUS VivoBook (11th Gen Intel Core i7, Realtek ALC256 codec) running Ubuntu 24.04 LTS. The internal mic is detected by ALSA and PulseAudio/PipeWire, but no audio input is captured, even with max gain and boost. I have tested it on both Ubuntu's default kernel (6.11) and mainline kernel 6.15 — the issue persists. ALSA detects the codec, and the input pin (0x12) appears to be present, but remains silent. Here is the ALSA info dump: https://alsa-project.org/db/?f=6d6466ba903b2e08b351046571e0fc54ddd13981 Ubuntu Launchpad bug report: https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/2112330 If this requires a model-specific quirk or pin fix, I’m happy to test a patch. Many thanks, Anas Pauzi

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[PATCH] ALSA: hda: Add new pci id for AMD GPU display HD audio controller
by Vijendar Mukunda 02 Jun '25

02 Jun '25

Add new pci id for AMD GPU display HD audio controller(device id- 0xab40). Signed-off-by: Vijendar Mukunda <Vijendar.Mukunda(a)amd.com> --- sound/pci/hda/hda_intel.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/sound/pci/hda/hda_intel.c b/sound/pci/hda/hda_intel.c index 512fb22f5e5e..3f8b2bf6eab5 100644 --- a/sound/pci/hda/hda_intel.c +++ b/sound/pci/hda/hda_intel.c @@ -2715,6 +2715,9 @@ static const struct pci_device_id azx_ids[] = { { PCI_VDEVICE(ATI, 0xab38), .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS | AZX_DCAPS_PM_RUNTIME }, + { PCI_VDEVICE(ATI, 0xab40), + .driver_data = AZX_DRIVER_ATIHDMI_NS | AZX_DCAPS_PRESET_ATI_HDMI_NS | + AZX_DCAPS_PM_RUNTIME }, /* GLENFLY */ { PCI_DEVICE(PCI_VENDOR_ID_GLENFLY, PCI_ANY_ID), .class = PCI_CLASS_MULTIMEDIA_HD_AUDIO << 8, -- 2.45.2

3 3

snd_pcm_drain stucked.
by GitHub issues - opened 02 Jun '25

02 Jun '25

alsa-project/alsa-lib issue #457 was opened from yangyagami: When snd_pcm_drain is called, if snd_pcm_drop is called in another thread, snd_pcm_drain will get stuck. ```cpp #include <iostream> #include <cmath> #include <thread> #include <alsa/asoundlib.h> #define SAMPLE_RATE 44100 #define FREQUENCY 440.0 // A4 note #define DURATION 5.0 // seconds using namespace std::chrono_literals; int main() { snd_pcm_t *handle; snd_pcm_hw_params_t *params; unsigned int rate = SAMPLE_RATE; int dir; int pcm; pcm = snd_pcm_open(&handle, "default", SND_PCM_STREAM_PLAYBACK, 0); if (pcm < 0) { std::cerr << "Unable to open PCM device: " << snd_strerror(pcm) << std::endl; return 1; } snd_pcm_hw_params_alloca(&params); snd_pcm_hw_params_any(handle, params); snd_pcm_hw_params_set_access(handle, params, SND_PCM_ACCESS_RW_INTERLEAVED); snd_pcm_hw_params_set_format(handle, params, SND_PCM_FORMAT_S16_LE); snd_pcm_hw_params_set_rate_near(handle, params, &rate, &dir); snd_pcm_hw_params_set_channels(handle, params, 1); pcm = snd_pcm_hw_params(handle, params); if (pcm < 0) { std::cerr << "Unable to set HW parameters: " << snd_strerror(pcm) << std::endl; return 1; } int samples = static_cast<int>(DURATION * SAMPLE_RATE); int16_t *buffer = new int16_t[samples]; for (int i = 0; i < samples; ++i) { buffer[i] = static_cast<int16_t>(32767 * sin(2 * M_PI * FREQUENCY * i / SAMPLE_RATE)); } pcm = snd_pcm_writei(handle, buffer, samples); if (pcm < 0) { std::cerr << "Playback error: " << snd_strerror(pcm) << std::endl; } std::thread t([handle](){ std::this_thread::sleep_for(500ms); snd_pcm_drop(handle); }); snd_pcm_drain(handle); t.join(); delete[] buffer; snd_pcm_close(handle); return 0; } ``` gdb output ```shell Thread 1 "main" received signal SIGINT, Interrupt. 0x00007ffff71b5e22 in ?? () from /usr/lib/libc.so.6 (gdb) bt #0 0x00007ffff71b5e22 in ?? () from /usr/lib/libc.so.6 #1 0x00007ffff71a9fda in ?? () from /usr/lib/libc.so.6 #2 0x00007ffff71aa64c in ?? () from /usr/lib/libc.so.6 #3 0x00007ffff71acd1e in pthread_cond_wait () from /usr/lib/libc.so.6 #4 0x00007ffff6b9e2b9 in pw_thread_loop_wait () from /usr/lib/libpipewire-0.3.so.0 #5 0x00007ffff7f2ec8f in ?? () from /usr/lib/alsa-lib/libasound_module_pcm_pipewire.so #6 0x00007ffff777c2b8 in ?? () from /usr/lib/libasound.so.2 #7 0x0000555555558d6f in main () at main.cc:116 (gdb) ``` Issue URL : https://github.com/alsa-project/alsa-lib/issues/457 Repository URL: https://github.com/alsa-project/alsa-lib

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ucm2: Qualcomm: add ASUS Vivobook S 15 support
by GitHub pull_request - opened 02 Jun '25

02 Jun '25

alsa-project/alsa-ucm-conf pull request #570 was opened from binarycraft007: S15 supports: - 2 speakers. - 2 dmics - headset with mic. This patch adds support to all these, however only speakers, dmic and headset playback is tested. Request URL : https://github.com/alsa-project/alsa-ucm-conf/pull/570 Patch URL : https://github.com/alsa-project/alsa-ucm-conf/pull/570.patch Repository URL: https://github.com/alsa-project/alsa-ucm-conf

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ALC4080 Mic In not working on ASUS ROG Strix B850-E Gaming WIFI
by GitHub issues - edited 01 Jun '25

01 Jun '25

alsa-project/alsa-ucm-conf issue #569 was edited from kieran4333: [alsa-info.sh](http://alsa-project.org/db/?f=edcbadeae18eb8f200b9625d2b0fb41… `lsusb | grep -i audio` ``` Bus 001 Device 002: ID 0b05:1b9b ASUSTek Computer, Inc. USB Audio ``` `amixer -c 2 contents` ``` numid=8,iface=CARD,name='Analog In - Input Jack' ; type=BOOLEAN,access=r-------,values=1 : values=on numid=11,iface=CARD,name='Clock Source 1 Validity' ; type=BOOLEAN,access=r-------,values=1 : values=on numid=15,iface=CARD,name='Clock Source 3 Validity' ; type=BOOLEAN,access=r-------,values=1 : values=on numid=19,iface=CARD,name='Clock Source 4 Validity' ; type=BOOLEAN,access=r-------,values=1 : values=on numid=22,iface=CARD,name='Clock Source 5 Validity' ; type=BOOLEAN,access=r-------,values=1 : values=on numid=26,iface=CARD,name='Clock Source 6 Validity' ; type=BOOLEAN,access=r-------,values=1 : values=on numid=29,iface=CARD,name='Clock Source 8 Validity' ; type=BOOLEAN,access=r-------,values=1 : values=on numid=27,iface=CARD,name='Headphone - Output Jack' ; type=BOOLEAN,access=r-------,values=1 : values=off numid=12,iface=CARD,name='Line - Input Jack' ; type=BOOLEAN,access=r-------,values=1 : values=on numid=16,iface=CARD,name='Mic - Input Jack' ; type=BOOLEAN,access=r-------,values=1 : values=off numid=23,iface=CARD,name='Speaker - Output Jack' ; type=BOOLEAN,access=r-------,values=1 : values=on numid=20,iface=MIXER,name='PCM Playback Switch' ; type=BOOLEAN,access=rw------,values=1 : values=on numid=24,iface=MIXER,name='PCM Playback Switch',index=1 ; type=BOOLEAN,access=rw------,values=1 : values=off numid=28,iface=MIXER,name='PCM Playback Switch',index=2 ; type=BOOLEAN,access=rw------,values=1 : values=off numid=21,iface=MIXER,name='PCM Playback Volume' ; type=INTEGER,access=rw---R--,values=8,min=0,max=87,step=0 : values=56,56,56,56,56,56,56,56 | dBminmax-min=-65.25dB,max=0.00dB numid=25,iface=MIXER,name='PCM Playback Volume',index=1 ; type=INTEGER,access=rw---R--,values=2,min=0,max=87,step=0 : values=59,59 | dBminmax-min=-65.25dB,max=0.00dB numid=13,iface=MIXER,name='Line Capture Switch' ; type=BOOLEAN,access=rw------,values=1 : values=on numid=14,iface=MIXER,name='Line Capture Volume' ; type=INTEGER,access=rw---R--,values=2,min=0,max=39,step=0 : values=39,39 | dBminmax-min=-17.25dB,max=12.00dB numid=17,iface=MIXER,name='Mic Capture Switch' ; type=BOOLEAN,access=rw------,values=1 : values=off numid=18,iface=MIXER,name='Mic Capture Volume' ; type=INTEGER,access=rw---R--,values=2,min=0,max=39,step=0 : values=35,35 | dBminmax-min=-17.25dB,max=12.00dB numid=9,iface=MIXER,name='Analog In Capture Switch' ; type=BOOLEAN,access=rw------,values=1 : values=off numid=10,iface=MIXER,name='Analog In Capture Volume' ; type=INTEGER,access=rw---R--,values=2,min=0,max=39,step=0 : values=36,36 | dBminmax-min=-17.25dB,max=12.00dB numid=1,iface=PCM,name='Capture Channel Map' ; type=INTEGER,access=r--v-R--,values=2,min=0,max=36,step=0 : values=0,0 | container | chmap-fixed=FL,FR numid=4,iface=PCM,name='Playback Channel Map' ; type=INTEGER,access=r--v-R--,values=2,min=0,max=36,step=0 : values=0,0 | container | chmap-fixed=FL,FR | chmap-fixed=FL,FR,RL,RR | chmap-fixed=FL,FR,FC,LFE,RL,RR | chmap-fixed=FL,FR,FC,LFE,RL,RR,SL,SR numid=2,iface=PCM,name='Capture Channel Map',device=1 ; type=INTEGER,access=r--v-R--,values=2,min=0,max=36,step=0 : values=0,0 | container | chmap-fixed=FL,FR numid=5,iface=PCM,name='Playback Channel Map',device=1 ; type=INTEGER,access=r--v-R--,values=2,min=0,max=36,step=0 : values=0,0 | container | chmap-fixed=FL,FR numid=3,iface=PCM,name='Capture Channel Map',device=2 ; type=INTEGER,access=r--v-R--,values=2,min=0,max=36,step=0 : values=0,0 | container | chmap-fixed=FL,FR numid=6,iface=PCM,name='Playback Channel Map',device=2 ; type=INTEGER,access=r--v-R--,values=2,min=0,max=36,step=0 : values=0,0 | container | chmap-fixed=FL,FR numid=7,iface=PCM,name='Playback Channel Map',device=3 ; type=INTEGER,access=r--v-R--,values=2,min=0,max=36,step=0 : values=0,0 | container | chmap-fixed=FL,FR ``` `alsactl monitor` (Unplugging and plugging the mic) ``` node hw:2, #12 (0,0,0,Line - Input Jack,0) VALUE node hw:2, #12 (0,0,0,Line - Input Jack,0) VALUE ``` `amixer -c events` (Unplugging and plugging mic) ``` event value: numid=12,iface=CARD,name='Line - Input Jack' event value: numid=12,iface=CARD,name='Line - Input Jack' ``` It appears the Mic In is being incorrectly identified as the Line In and I cannot record any sound through this jack. Issue URL : https://github.com/alsa-project/alsa-ucm-conf/issues/569 Repository URL: https://github.com/alsa-project/alsa-ucm-conf

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ALC4080 Mic In not working on ASUS ROG Strix B580-E Gaming WIFI
by GitHub issues - opened 01 Jun '25

01 Jun '25

alsa-project/alsa-ucm-conf issue #569 was opened from kieran4333: [alsa-info.sh](http://alsa-project.org/db/?f=edcbadeae18eb8f200b9625d2b0fb41… `lsusb | grep -i audio` ``` Bus 001 Device 002: ID 0b05:1b9b ASUSTek Computer, Inc. USB Audio ``` `amixer -c 2 contents` ``` numid=8,iface=CARD,name='Analog In - Input Jack' ; type=BOOLEAN,access=r-------,values=1 : values=on numid=11,iface=CARD,name='Clock Source 1 Validity' ; type=BOOLEAN,access=r-------,values=1 : values=on numid=15,iface=CARD,name='Clock Source 3 Validity' ; type=BOOLEAN,access=r-------,values=1 : values=on numid=19,iface=CARD,name='Clock Source 4 Validity' ; type=BOOLEAN,access=r-------,values=1 : values=on numid=22,iface=CARD,name='Clock Source 5 Validity' ; type=BOOLEAN,access=r-------,values=1 : values=on numid=26,iface=CARD,name='Clock Source 6 Validity' ; type=BOOLEAN,access=r-------,values=1 : values=on numid=29,iface=CARD,name='Clock Source 8 Validity' ; type=BOOLEAN,access=r-------,values=1 : values=on numid=27,iface=CARD,name='Headphone - Output Jack' ; type=BOOLEAN,access=r-------,values=1 : values=off numid=12,iface=CARD,name='Line - Input Jack' ; type=BOOLEAN,access=r-------,values=1 : values=on numid=16,iface=CARD,name='Mic - Input Jack' ; type=BOOLEAN,access=r-------,values=1 : values=off numid=23,iface=CARD,name='Speaker - Output Jack' ; type=BOOLEAN,access=r-------,values=1 : values=on numid=20,iface=MIXER,name='PCM Playback Switch' ; type=BOOLEAN,access=rw------,values=1 : values=on numid=24,iface=MIXER,name='PCM Playback Switch',index=1 ; type=BOOLEAN,access=rw------,values=1 : values=off numid=28,iface=MIXER,name='PCM Playback Switch',index=2 ; type=BOOLEAN,access=rw------,values=1 : values=off numid=21,iface=MIXER,name='PCM Playback Volume' ; type=INTEGER,access=rw---R--,values=8,min=0,max=87,step=0 : values=56,56,56,56,56,56,56,56 | dBminmax-min=-65.25dB,max=0.00dB numid=25,iface=MIXER,name='PCM Playback Volume',index=1 ; type=INTEGER,access=rw---R--,values=2,min=0,max=87,step=0 : values=59,59 | dBminmax-min=-65.25dB,max=0.00dB numid=13,iface=MIXER,name='Line Capture Switch' ; type=BOOLEAN,access=rw------,values=1 : values=on numid=14,iface=MIXER,name='Line Capture Volume' ; type=INTEGER,access=rw---R--,values=2,min=0,max=39,step=0 : values=39,39 | dBminmax-min=-17.25dB,max=12.00dB numid=17,iface=MIXER,name='Mic Capture Switch' ; type=BOOLEAN,access=rw------,values=1 : values=off numid=18,iface=MIXER,name='Mic Capture Volume' ; type=INTEGER,access=rw---R--,values=2,min=0,max=39,step=0 : values=35,35 | dBminmax-min=-17.25dB,max=12.00dB numid=9,iface=MIXER,name='Analog In Capture Switch' ; type=BOOLEAN,access=rw------,values=1 : values=off numid=10,iface=MIXER,name='Analog In Capture Volume' ; type=INTEGER,access=rw---R--,values=2,min=0,max=39,step=0 : values=36,36 | dBminmax-min=-17.25dB,max=12.00dB numid=1,iface=PCM,name='Capture Channel Map' ; type=INTEGER,access=r--v-R--,values=2,min=0,max=36,step=0 : values=0,0 | container | chmap-fixed=FL,FR numid=4,iface=PCM,name='Playback Channel Map' ; type=INTEGER,access=r--v-R--,values=2,min=0,max=36,step=0 : values=0,0 | container | chmap-fixed=FL,FR | chmap-fixed=FL,FR,RL,RR | chmap-fixed=FL,FR,FC,LFE,RL,RR | chmap-fixed=FL,FR,FC,LFE,RL,RR,SL,SR numid=2,iface=PCM,name='Capture Channel Map',device=1 ; type=INTEGER,access=r--v-R--,values=2,min=0,max=36,step=0 : values=0,0 | container | chmap-fixed=FL,FR numid=5,iface=PCM,name='Playback Channel Map',device=1 ; type=INTEGER,access=r--v-R--,values=2,min=0,max=36,step=0 : values=0,0 | container | chmap-fixed=FL,FR numid=3,iface=PCM,name='Capture Channel Map',device=2 ; type=INTEGER,access=r--v-R--,values=2,min=0,max=36,step=0 : values=0,0 | container | chmap-fixed=FL,FR numid=6,iface=PCM,name='Playback Channel Map',device=2 ; type=INTEGER,access=r--v-R--,values=2,min=0,max=36,step=0 : values=0,0 | container | chmap-fixed=FL,FR numid=7,iface=PCM,name='Playback Channel Map',device=3 ; type=INTEGER,access=r--v-R--,values=2,min=0,max=36,step=0 : values=0,0 | container | chmap-fixed=FL,FR ``` `alsactl monitor` (Unplugging and plugging the mic) ``` node hw:2, #12 (0,0,0,Line - Input Jack,0) VALUE node hw:2, #12 (0,0,0,Line - Input Jack,0) VALUE ``` `amixer -c events` (Unplugging and plugging mic) ``` event value: numid=12,iface=CARD,name='Line - Input Jack' event value: numid=12,iface=CARD,name='Line - Input Jack' ``` It appears the Mic In is being incorrectly identified as the Line In and I cannot record any sound through this jack. Issue URL : https://github.com/alsa-project/alsa-ucm-conf/issues/569 Repository URL: https://github.com/alsa-project/alsa-ucm-conf

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Arturia AudioFuse support
by GitHub issues - opened 01 Jun '25

01 Jun '25

alsa-project/alsa-ucm-conf issue #568 was opened from saaj: I own [Arturia AudioFuse][1]. I am on Linux Mint and I got faux "Analogue Surround 7.1 Output" probably since Linux Mint 20. The version before that was property split input multiple devices in the system sound settings. Not a big deal, but occasionally I want just plug it in to listen to music on a good DAC and headphone (without setting up Jack and ingestigating XRUNs). I didn't find a simple workaround and just used Jack (in my instrument/recording setup). I recently updated to Linux Mint 22.1 (based on Ubuntu 24.04) and wanted to explore if there's a solution, since LM's audio is now based in PipeWire. Out of the box I got the same "Analogue Surround 7.1 Output". After a lot of searching, I found that some Arturia products are already in my `/usr/share/alsa/ucm2/USB-Audio/Arturia` (alsa-ucm-conf 1.2.10-1ubuntu5.4). Then I just applied https://github.com/alsa-project/alsa-ucm-conf/commit/b68aa52, `cp Minifuse-12.conf Audiofuse.conf`, `cp Minifuse-12-HiFi.conf Audiofuse-HiFi.conf`, added an include in `USB-Audio.conf` and `s/minifuse12/audiofuse` in the files. `systemctl --user restart pipewire pipewire-pulse wireplumber` and viola -- I've got the split back! :-) I'm only interested in "Main Output L/R AudioFuse", which is working. The rest may not, and I still plan to use Jack for recording. But I'm happy to validate things on the interface. Attaching my patch over Minifuse-12 for completeness. [audiofuse.patch.gz](https://github.com/user-attachments/files/20541119/audi… [1]: https://www.arturia.com/products/audio/audiofuse/overview Issue URL : https://github.com/alsa-project/alsa-ucm-conf/issues/568 Repository URL: https://github.com/alsa-project/alsa-ucm-conf

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aseqsend silently fails (ENODEV) with hardware port
by GitHub issues - opened 01 Jun '25

01 Jun '25

alsa-project/alsa-utils issue #300 was opened from michaelforney: When I use `aseqsend` to send a sysex message to a device, it doesn't seem to work, though there is no error message. Running with strace, it seems it is failing with ENODEV. ```sh $ strace aseqsend -p 32:0 'F0 43 7D 10 41 30 01 00 00 01 F7' ... open("/dev/snd/seq", O_WRONLY|O_LARGEFILE|O_CLOEXEC) = 3 fcntl(3, F_SETFD, FD_CLOEXEC) = 0 ioctl(3, SNDRV_SEQ_IOCTL_PVERSION, 0x7fffef1ae678) = 0 ioctl(3, SNDRV_SEQ_IOCTL_USER_PVERSION, 0x7fffef1ae67c) = 0 mmap(NULL, 20480, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x7f6ae25f7000 ioctl(3, SNDRV_SEQ_IOCTL_CLIENT_ID, 0x7fffef1ae67c) = 0 ioctl(3, SNDRV_SEQ_IOCTL_RUNNING_MODE, 0x7fffef1ae680) = 0 ioctl(3, SNDRV_SEQ_IOCTL_GET_CLIENT_INFO, 0x7fffef1ae940) = 0 ioctl(3, SNDRV_SEQ_IOCTL_SET_CLIENT_INFO, 0x7fffef1ae940) = 0 ioctl(3, SNDRV_SEQ_IOCTL_GET_CLIENT_INFO, 0x7fffef1ae940) = 0 ioctl(3, SNDRV_SEQ_IOCTL_SET_CLIENT_INFO, 0x7fffef1ae940) = 0 ioctl(3, SNDRV_SEQ_IOCTL_CREATE_PORT, 0x7fffef1ae960) = 0 write(3, "\202\4\0\375\0\0\0\0\0\0\0\0\0\0 \0\v\0\0\0\320\212WN\361U\0\0\360C}\20"..., 39) = -1 ENODEV (No such device) nanosleep({tv_sec=0, tv_nsec=1000000}, 0x7fffef1aea20) = 0 close(3) = 0 munmap(0x7f6ae25f7000, 20480) = 0 exit_group(0) = ? +++ exited with 0 +++ $ ``` `amidi -S ...` works as expected. If I modify `aseqsend` to first subscribe to the port, it seems to work: ```diff diff --git a/seq/aseqsend/aseqsend.c b/seq/aseqsend/aseqsend.c index 92354eb..ad0a636 100644 --- a/seq/aseqsend/aseqsend.c +++ b/seq/aseqsend/aseqsend.c @@ -364,6 +364,7 @@ int main(int argc, char *argv[]) char do_port_list = 0; char verbose = 0; int k; + int err; while ((c = getopt_long(argc, argv, "hi:Vvlp:s:u:", long_options, NULL)) != -1) { switch (c) { @@ -439,6 +440,8 @@ int main(int argc, char *argv[]) error("Unable to parse port name!"); exit(EXIT_FAILURE); } + err = snd_seq_connect_to(seq, 0, addr.client, addr.port); + check_snd("connect to port", err); sent_data_c = 0; //counter of actually sent bytes ``` From what I've read, I don't think it should be necessary to subscribe to a port to send it messages. However, I did find one sentence in the alsa-lib docs that seem to indicate that it is needed for hardware ports: > There is another subscription type for opposite direction: Suppose a MIDI sequencer program which sends events to a MIDI output device. In ALSA system, MIDI device is not opened until the associated MIDI port is accessed. Thus, in order to activate MIDI device, we have to subscribe to MIDI port for write. After this connection is established, events will be properly sent to MIDI output device. This seems to be a pretty basic use of `aseqsend`, so I am a bit surprised that it wasn't working. Is the subscription the right way to fix the problem, or am I doing something else wrong? Issue URL : https://github.com/alsa-project/alsa-utils/issues/300 Repository URL: https://github.com/alsa-project/alsa-utils

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