I’ve discovered that in Fedora 35 bleutooth works well and survive suspensions. Also, I see that now BT doesn’t work anymore in Manjaro even after reboot. No workarounds.
Also tried different Fedora 35 versions (had older iso image at first).
Fedora system info
Older fedora:
Linux localhost-live 5.14.0-60.fc35.x86_64 #1 SMP Mon Aug 30 16:45:32 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
fcebbd1461a605c0d57d3d4a21145ac5dafe18f2 /run/media/liveuser/66ed6134-966b-47d6-868d-f5c4c3a74d99/usr/lib/firmware/rtl_bt/rtl8821c_fw.bin
[liveuser@localhost-live ~]$ unxz -c /usr/lib/firmware/rtl_bt/rtl8821c_fw.bin.xz | sha1sum
fcebbd1461a605c0d57d3d4a21145ac5dafe18f2 -
So the firmware image is completely the same. While Manjaro with 5.14 kernel doesn’t fix the issue.
Slightly newer Fedora kernel has different firmare
[liveuser@localhost-live ~]$ xz -c /usr/lib/firmware/rtl_bt/rtl8821c_fw.bin.xz | sha1sum
ad7097c12320b2a36e0239acbede24ff900fb3d9 -
[liveuser@localhost-live ~]$ uname -a
Linux localhost-live 5.14.10-300.fc35.x86_64 #1 SMP Thu Oct 7 20:48:44 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux
[liveuser@localhost-live ~]$
Any thoughts, what I can compare to narrow down the cause?