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When running htop I get
Error: File
/etc/sensors3.conf: Permission denied
the permissions:
$ ls -l /etc/sensors3.conf
-rw-r--r-- 1 root root 10368 Apr 5 2017 /etc/sensors3.conf
htop still works as expected, but what's up with this error?
I've also tried:
sudo apt install --reinstall lm-sensors
which made no difference.
which htop
/usr/bin/htop
Snap maintainer here. That's just a warning message caused by missing permissions due to snap confinement. As a result, optional CPU temperature stats are unavailable (N/A is shown to the right of each CPU bar, if enabled).
Just updated the snap with support for manually connecting the hardware-observe interface, which fixes it (and also adds support for battery stats, btw). So, you just need to:
$ sudo snap connect htop:hardware-observe
Also, before just uninstalling the snap, note that depending on your OS release the snap might be much newer than the one in the OS repositories (eg. 3.0.4 vs 2.1.0 on Ubuntu 18.04).
I had the same problem even after install with apt and fixed it by removing the snap version of htop.
sudo snap remove htop
which htopplease. Maybe it is a snap?sudo htop, i think it's unsafe when you run as superuser but give it a try.