Slow startup due to rndg using all cpu

[burkhre2]

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Describe the bug
When freshly starting hifiberryos on a raspberry4 I can login with ssh and with top I see full CPU usage by rndg during a minute or more.

Also the xecution of rngd --list hangs on TPM step

This seems related to https://bugzilla.redhat.com/show_bug.cgi?id=1739730
Work-around:
Replace in /etc/systemd/system/multi-user.target.wants/rngd.service the line with ExecStart by
ExecStart=/usr/sbin/rngd -f --no-tpm=1

HiFiBerryOS version
Buildroot 2021.11
Linux hifiberry 5.15.78-v7l #1 SMP Mon Apr 3 20:04:51 UTC 2023 armv7l GNU/Linux

HiFiBerry sound card
Amp2

To Reproduce
Steps to reproduce the behavior:

1. Shut dowen hifiberryos
2. Startup hifiberryos
3. Login via ssh with root
4. Start top

Expected behavior
No high cpu usage during longer time

Screenshots
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Additional context
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[hifiberry]

We're just working on a new HBOS version based on a newer Buildroot release. This doesn't seem to have this issue anymore.

[hifiberry]

Can you try the latest HBOS 64 Alpha release? It should be fixed in this.

[burkhre2]

Hi,

the slow bootup has now gone.
Also the storage of the last volume now works instead of always starting with max volume.

But now the wireless remote control does not work any more!! The usb stick for the remote is recognised, but the system does not react on any keypress. On the previous version it has worked.

Similar symptoms as described in https://support.hifiberry.com/hc/en-us/community/posts/360015923778-HiFiBerry-Remote-Control

Regards

Rene Burkhardt