I recently got a new laptop, (well — not new, but new to me), a HP ZBook 15 G5. After installing Arch Linux and the i3 wm I spend some time setting up power management, suspend on idle, and figuring out the state of the battery.

With the electricity prices we’ve seen in Europe lately — I wanted to see if we could reduce our energy consumption. I’m specifically looking at “wasted” energy, meaning usage we can reduce without even noticing it.

I’ve already written about my PDU suddenly dying — and in that post I explained that I was going to do some changes to the homelab power layout. It’s time to do those changes 🙂

My homelab PDU suddenly died! It’s dead, D-E-D, dead! There are few things worse than a server rack suddenly going completely silent…

The PDU has had an error since the power outage last summer — F11 means Power fail on auxiliary 1. Which is an odd error for a PDU with only one input. And; it wasn’t possible to clear or reset it it 😕

A few days ago; sitting outside — drinking coffee and minding my own business, I received an email from my UPS:

Utility power not available.

2021/06/01 18:38:27

My homelab had lost both power sources 😮 This whole area had a power outage — a good opportunity to do a UPS and power down test 😛