Bug#959170: linux: at boot: Process '/usr/sbin/alsactl ... restore 0' failed with exit code 99
FYI, other users got the same error:
https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=848395
https://bugs.launchpad.net/ubuntu/+source/alsa-driver/+bug/1568772
https://bugs.launchpad.net/ubuntu/+source/alsa-utils/+bug/1624435
https://bugs.gentoo.org/578138
In Debian bug 848395: as said by the alsactl(1) man page:
init tries to initialize all devices to a default state.
If device is not known, error code 99 is returned.
I can see 2 possibilities:
1. For some reason, the device is not always initialized by the
kernel.
2. There is a race condition: alsactl is run too soon, while the
device has not been initialized yet by the kernel.
(2) would explain why this isn't always reproducible.
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Vincent Lefèvre <vincent@vinc17.net> - Web: <https://www.vinc17.net/>
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