Public bug reported:
Here's a draft bug report:
*Title:* Audio device disappears after boot - /proc/.../fd/* files missing
*Description:*
Fresh Ubuntu 26.04 install
Audio device disappears from Settings after boot
sudo alsa force-reload output shows missing /proc/.../fd/* files
*Steps to reproduce:*
1. Fresh install Ubuntu 26.04
2. Boot system
3. Observe audio device in Settings disappears
*Output:*
steve@Tower-Pc:~$ sudo alsa force-reload
readlink: /proc/17621/fd/4: No such file or directory
readlink: /proc/18880/fd/4: No such file or directory
Unloading ALSA sound driver modules: snd-seq-dummy snd-hrtimer snd-usb-audio
snd-usbmidi-lib snd-ump snd-hda-codec-alc882 snd-hda-codec-atihdmi
snd-hda-codec-realtek-lib snd-hda-codec-hdmi snd-hda-codec-generic
snd-hda-intel snd-hda-codec snd-seq-midi snd-hda-core snd-seq-midi-event
snd-intel-dspcfg snd-rawmidi snd-intel-sdw-acpi snd-hwdep snd-seq snd-pcm
snd-seq-device snd-timer (failed: modules still loaded: snd-hrtimer
snd-usb-audio snd-usbmidi-lib snd-ump snd-hda-codec-alc882
snd-hda-codec-atihdmi snd-hda-codec-realtek-lib snd-hda-codec-hdmi
snd-hda-codec-generic snd-hda-intel snd-hda-codec snd-hda-core snd-intel-dspcfg
snd-rawmidi snd-intel-sdw-acpi snd-hwdep snd-seq snd-pcm snd-seq-device
snd-timer).
Loading ALSA sound driver modules: snd-seq-dummy snd-hrtimer snd-usb-audio
snd-usbmidi-lib snd-ump snd-hda-codec-alc882 snd-hda-codec-atihdmi
snd-hda-codec-realtek-lib snd-hda-codec-hdmi snd-hda-codec-generic
snd-hda-intel snd-hda-codec snd-seq-midi snd-hda-core snd-seq-midi-event
snd-intel-dspcfg snd-rawmidi snd-intel-sdw-acpi snd-hwdep snd-seq snd-pcm
snd-seq-device snd-timer.
*Tags:* audio, alsa, kernel
upon reboot audio briefly detects and plays but after a few min
disappears
** Affects: ubuntu
Importance: Undecided
Status: New
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https://bugs.launchpad.net/bugs/2142827
Title:
26.04 no audio proc folders
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