Since the last update (Kernel 5.9.11-arch2-1) (after reboot) I have no sound anymore. The sound icon in the notification area is crossed out. Everything is correct in the audio settings of Pulsaudio. Driver broken? I booted Kernel 5.4 - same result + network broken.
If not a kernel issue, I would look at what else got updated during the last update.
Where do I see that?
In /var/log/pacman.log
Or in terminal: cat /var/log/pacman.log
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as this help me two time 
It might help youThe problem seems to have been solved. I installed the Xfce variant again this afternoon, because I just had time and desire and KDE pissed me off again (after I tried the EnOS Live session to see if the sound is OK). I know, a reinstall is not the solution, but the sound problem today was the push I used to get back to Xfce. Yes, I had finished with Xfce - but somehow I always end up back there …
Thanks for your help @pebcak and @Shjim for the link to Joe’s contribution!
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Strange as i am on KDE and i have no issue with sound. Just updated again today with plasma updates and no issues. Running 5.9.11-arch2-1 kernel.
No problems here.
BTW, I use KDE 
I’m 99.9% certain this issue is not related to KDE.
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Something to consider, no matter the DE, you should always try to have at least one extra kernel installed (I use the LTS almost always, but I have the latest also). This can help diagnose problems with updates sometimes. It’s REALLY common on the latest kernel to lose some feature, and then get it back a day or two later when it updates again.
You can install bonus kernels just in terminal, or use a fancy little program (akm for instance) so that way you can help diagnose issues. Note: if you add a kernel via pacman, just be sure to update grub otherwise you won’t actually get the option to give it a go on the next reboot.
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I agree and i only use current kernel. I’m not a big believer in installing an lts kernel to fix a problem. I would rather downgrade it and wait. 
Depends on hardware. I also use the mainline Arch kernel whenever possible, but older hardware often works better on lts, or on even older lts. I have a laptop that works the best on 4.19.
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My hardware is Rolling! 
The sound problem must have had nothing to do with KDE. I had been thinking about going back to GNOME or Xfce for a few days, as I haven’t been able to get quite warm with KDE for years. But GNOME was too minimalistic for me. This annoyance with the broken sound was just a nudge. I wanted to know if the problem would occur again after installing another DE online and all the latest updates. Well, we’ll see, I’m still too much affected by DE-hopping.
I have three desktops installed in case i get the urge. Triple boot xfce,cinnamon & kde on BTRFS with timeshift and snapshots. Cinnamon is encrypted, xfce & kde are not. Running rEFInd also and everything stays separate including the grub bootloader.
It’s about time that I decide after more than 5 years …
I know it’s hard. I like a lot of desktops but these three are my favorites.
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are you really so sure about that? 
nevermind, i should not reply when half asleep… sorry about that, surely you are 100% right. haha
after all, pulseaudio has recently been updated to version 14 and at that time I had problems with the sound as well.
ok, ihave to admit, it wasn’t that drastic for me and fortunately the problem has been solved automatically with a following update…
@anon59358842: gib dem ganzen einfach beim nächsten mal nen bisserl zeit
p.s.: how to cross out text btw?
<strike>text</strike>
text
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Even simpler:
[s]text[/s]
text
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