All directions were followed for install: iostat , lm-sensors, etc. installed on my Debian system. The plugin is working perfectly for all other variables but for some reason:

• #{cpu_temp} shows -nanC in status bar.
  My .tmux.conf:

set -g @cpu_temp_format '%2.0f' set -g @cpu_temp_units 'F' 

-#{gpu_temp} shows "C" scale in status bar.
My .tmux.conf:

set -g @gpu_temp_format '%2.0f' set -g @gpu_temp_units 'F' 

Any suggestions?