Using quotes is ignored. Same error message: snd_hda_intel: `' invalid for parameter `probe_mask' Using a file in modprobe.d: gem300@opensuse15dot6:~> cd /etc/modprobe.d gem300@opensuse15dot6:/etc/modprobe.d> ll total 12 -rw-r--r-- 1 root root 0 2024-05-23 10:55 50-yast.conf -rw-r--r-- 1 root root 40 2024-05-26 09:21 60-hda.conf -rw-r--r-- 1 root root 395 2024-03-08 12:47 README -rw-r--r-- 1 root root 674 2019-01-08 09:07 tuned.conf gem300@opensuse15dot6:/etc/modprobe.d> cat 60-hda.conf options snd-hda-intel probe_mask=,0x101 Same error message: `' invalid for parameter `probe_mask' Full output of both cases attached as: dmesg+alsa-info_0x101_quotes dmesg+alsa-info_60-hda.conf_0x101 At least things are consistent!