On Thu, 22 Sep 2022 10:41:18 +0200 Kamil Paral <kparal@xxxxxxxxxx> wrote: > Completely randomly, my laptop sometimes emits a loud PC speaker beep > while rebooting/powering off Fedora 37. The beep is very strong, and > as a PC speaker sound, it of course ignores any configured volume > level, mute status, and even headphones plugged in. I fortunately am > in a different room than the rest of my family sleeps in, but if I > were in the same room, and were I just a regular user, this would > probably be the last day of Fedora on that laptop. The beep is that > loud and uncomfortable, especially at night. > > I wonder if somebody else running F37 noticed it as well? Any hints > what might cause it and how we can fix it? It never happened on F36 > on the same laptop. alsa usually has the pc speaker disabled. It has been a long time, but I think there is a configuration option that can turn it on. Is it possible that you have somehow turned this on? I found this in the arch linux documentation, https://wiki.archlinux.org/title/PC_speaker Globally The PC speaker can be disabled by unloading the pcspkr kernel module: Note: This will not disable your entire sound system, only the PC speaker. # rmmod pcspkr Blacklisting the pcspkr module will prevent udev from loading it at boot. Create the file: /etc/modprobe.d/nobeep.conf blacklist pcspkr Blacklisting it on the kernel command line is yet another way. Simply add modprobe.blacklist=pcspkr to your bootloader's kernel line. ALSA For most sound cards the PC speaker is listed as an ALSA channel, named either PC Speaker, PC Beep, or Beep. To mute the speaker, either use alsamixer or amixer , for example: $ amixer set 'PC Speaker' 0% mute To unmute the channel, see Advanced Linux Sound Architecture#Unmuting the channels. Tip: If you are using PulseAudio and the PC speaker channel is not listed for the default ALSA device, try selecting the device corresponding to the sound card - PulseAudio proxy controls may not list the PC speaker. _______________________________________________ test mailing list -- test@xxxxxxxxxxxxxxxxxxxxxxx To unsubscribe send an email to test-leave@xxxxxxxxxxxxxxxxxxxxxxx Fedora Code of Conduct: https://docs.fedoraproject.org/en-US/project/code-of-conduct/ List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines List Archives: https://lists.fedoraproject.org/archives/list/test@xxxxxxxxxxxxxxxxxxxxxxx Do not reply to spam, report it: https://pagure.io/fedora-infrastructure/new_issue
