Where should I report bug?

[titust11]

After grub, before I get the login prompt, I get the following error twice:
ACPI BIOS Error (bug): Could not resolve [\_SB.UBTC.RUCC], AE_NOT_FOUND
I guess this is a kernel bug

 

[Dunuin]

See here:
https://pve.proxmox.com/pve-docs/getting-help-plain.html

 

[LnxBil]

After grub, before I get the login prompt, I get the following error twice:
ACPI BIOS Error (bug): Could not resolve [\_SB.UBTC.RUCC], AE_NOT_FOUND
I guess this is a kernel bug

Most mainboard manufacturer use their own extensions and do not comply with ACPI standards, therefore you see such entries. This can mostly be ignored and you only experience a bug if you actually run into problems.