alsa-project/alsa-lib issue #465 was opened from j39m:
(Continued from [Pipewire issue 4809](https://gitlab.freedesktop.org/pipewire/pipewire/-/issues/4809).)
# Basic Symptoms
When resuming, my device often fails to continue playback over my HDMI output. Higher-level utils (`pavucontrol`, `pw-dump`, etc.) report that the corresponding "sink" is not present (until I reset the output).
Pipewire dev `@pvir` read my logs thusly:
<details>
<summary>`alsactl monitor` and `amixer`</summary>
Last state update after resume:
``` 2025-07-24 22:15:16,844: alsactl node hw:0, #7 (0,0,0,HDMI/DP,pcm=7 Jack,0) VALUE
2025-07-24 22:15:16,854: amixer numid=7,iface=CARD,name='HDMI/DP,pcm=7 Jack' ; type=BOOLEAN,access=r-------,values=1 : values=off ```
The next update then comes only when workaround is run:
``` 2025-07-24 22:16:02,772: alsactl node hw:0, #12 (3,7,0,ELD,0) VALUE INFO
2025-07-24 22:16:02,781: amixer numid=7,iface=CARD,name='HDMI/DP,pcm=7 Jack' ; type=BOOLEAN,access=r-------,values=1 : values=on ```
It appears there was no notification for the off->on transition, or the off->on only happens when doing the workaround cycling displays, so probably this is ALSA or HDMI bug.
</details>
I haven't tried waiting longer than this, but I assume that if ALSA thinks the card is still gone ~45s after resume, it's already a bit too far gone to be worried about exact timing.
# System readout
<details>
``` [j39m@flaglock6 ~/Downloads/tmp] $ rpm -q alsa-lib intel-audio-firmware alsa-lib-1.2.14-3.fc42.x86_64 intel-audio-firmware-20250708-1.fc42.noarch [j39m@flaglock6 ~/Downloads/tmp] $ inxi -A Audio: Device-1: Advanced Micro Devices [AMD/ATI] Raven/Raven2/Fenghuang HDMI/DP Audio driver: snd_hda_intel Device-2: Advanced Micro Devices [AMD] Audio Coprocessor driver: snd_pci_acp3x Device-3: Advanced Micro Devices [AMD] Family 17h/19h/1ah HD Audio driver: snd_hda_intel API: ALSA v: k6.15.6-200.fc42.x86_64 status: kernel-api Server-1: PipeWire v: 1.4.6 status: active ```
</details>
Issue URL : https://github.com/alsa-project/alsa-lib/issues/465 Repository URL: https://github.com/alsa-project/alsa-lib