I don’t know why either.
If you provide more information about your system, it might help someone take an educated guess or two:
inxi --admin --verbosity=8 --filter --no-host --width
Additionally, I notice that you are an infrequent user of this forum. Please take some time to familiarise yourself with Forum requirements; in particular, the many ways to use the forum to your benefit:
I hope this helps. Cheers.