Guy Rutenberg

Concept2’s PM5 monitor firmware can be updated via USB, but the official tool — Concept2 Utility — only runs on Windows.

I’ve been reading about HRV (Heart Rate Variability) for a while and wanted a way to record it on my computer and actually understand the underlying calculations, rather than just consume a number from a proprietary app.

I wanted to quantify the actual cost of currency hedging (USD/ILS) for index-tracking ETFs and mutual funds on the Tel Aviv Stock Exchange (TASE).

My USB keyboard stopped working during the Dracut initramfs phase (e.g., at the LUKS password prompt) when connected through a Thunderbolt dock.

On GNOME with power-profiles-daemon, I wanted the power profile to switch between power-saver and performance based on AC power or battery.

Slack has been spamming my systemd journal logs with useless info-level debug logs.

Despite having 32GB of RAM on my Debian Unstable system, I was experiencing random stalls and freezes triggered by memory pressure alerts from psi-notify.

If you’re running systemd-resolved with DNS over TLS (like I detailed in my split DNS post), you’ve probably run into the same annoying problem I have: captive portals just don’t work properly.

You can set the LDAC quality to High, Standard, or Mobile, corresponding to 990/660/330 kbps.

This post compares the tiered and fixed commission models offered by Interactive Brokers for trading U.S.