Bug#1019510: systemd-sysv: annoying beep during shutdown or reboot

[Michael Biebl]

[please CC the bug report on replies]


Am 11.09.2022 um 12:29 schrieb Christian Danneberg:
> Hi Michael,
> seems to work!!! This solved the issue. Thanks! Any explanations how
> this happens?

As mentioned in my previous mail, systemd now defaults to sending a wall 
message (on shutdown/reboot/...) if there are locally logged in users.

It appears, this wall message triggers the beep on your system (you can 
verify that by running the wall command)

https://lists.debian.org/debian-user/2011/12/msg00323.html

I'd try blacklisting the pcspkr module:

  echo "blacklist pcspkr" >> /etc/modprobe.d/blacklist.conf



> Christian
> 
> Am 10.09.22 um 23:27 schrieb Michael Biebl:
>> Control: tags -1 + moreinfo
>>
>> Am 10.09.2022 um 21:57 schrieb Christian Danneberg:
>>> on every reboot or shutdown my Laptop beeps very loud (Dell E6230). This
>>> behaviour came up after the installation of Bookworm.
>>> I tried all stuff I found. Blacklisting of pcspkr kernel module, on
>>> my system I
>>> can't find a module like pcspkr or similar. Tried to find the hex
>>> code 0x07
>>> in the binary of /sbin/shutdown. As suggested in forum.debian.de.
>>>
>>> All that had no effect.
>>
>> Do you get a beep if you run
>> systemctl reboot --no-wall ?
>>
>> It's possibly related to
>> https://github.com/systemd/systemd/commit/cdf370626f08ed509a5dde9d5618eed29d625032
>>
>> In that case, wall messages do trigger a beep on your system.
>> If you don't want that, you can blacklist pcspkr.
> 

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