Tried accessing kernel logs after 5.10.5-zen update with dmesg and got this.
dmesg: read kernel buffer failed: Operation not permitted
New default for
kernel.dmesg_restrict is the reason, for both
# CONFIG_SECURITY_DMESG_RESTRICT is not set CONFIG_SECURITY_DMESG_RESTRICT=y
Annoying have to type in long root password for each dmesg use, seeing the potential security threat for this is so low for a home user.
Easy to reset though, if you feel the same way.
sudo sysctl kernel.dmesg_restrict=0
And persist this setting across boots.
echo 'kernel.dmesg_restrict=0' | sudo tee -a /etc/sysctl.d/99-sysctl.conf