Battery Applet Doesn't Work

I tried installing a "minimal" KDE Plasma environment by just installing plasma5-plasma-desktop and dolphin. However, the battery indicator, when added to my panel, looks like it has errors and doesn't show any information at all. It has an error icon (red circle with white X in it) on the bottom-right of the battery icon. How could I fix this?
 
What's in your /etc/rc.conf?

Here is a snippet of mine (check this out also for your video issues):

Code:
# for the stock -RELEASE kernel:
#kld_list="/boot/modules/i915kms.ko"
kld_list="/boot/modules/i915kms.ko acpi_ibm acpi_video aesni cc_htcp coretemp cpuctl cuse4bsd fuse tmpfs linprocfs libiconv libmchain cd9660_iconv msdosfs_iconv"
#linux

devfs_system_ruleset="localrules"
 
What's in your /etc/rc.conf?

The kernel modules line that I had:
kld_list="/boot/modules/i915kms.ko"
What I changed it to, based on your example:
kld_list="/boot/modules/i915kms.ko acpi_video coretemp linprocfs"

However, it still doesn't seem to work. Also, would acpi_ibm work on my Thinkpad T420? It looks like it was written for ancient IBM Thinkpads, not the more recent Lenovo Thinkpads.
 
$ pkg info | grep powerdevil
plasma5-powerdevil-5.15.4 Plasma5 tool to manage the power consumption settings


Try installing plasma5-powerdevil-5.15.4
 
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