Firefox: play videos on Rocky Linux / Red Hat 9

Red Hat / Rocky Linux doesn't include patent-encumbered video codecs out of the box, so sudo dnf install \ "$(rpm -E '%rhel').noarch.rpm" \ "$(rpm -E '%rhel').noarch.rpm" \ && \ sudo dnf install ffmpeg I didn't even need to restart Firefox afterwards; it just all seemed to start working immediately

Rocky Linux 9 & HP Elitebook 8470p: Wi-Fi problems reconciled

Annoyingly, the Rocky 9 installer ISO didn't come with the Wi-Fi drivers for my HP Elitebook 8470p. The laptop seems to have a “Intel Corporation Centrino Ultimate-N 6300 (rev 3e)” PCIe Wi-Fi adapter, which worked fine out-of-the-box on Ubuntu and every other distro I tried on it, but not this one. I diagnosed this via dmesg: [ 108.888963] Intel(R) Wireless WiFi driver for Linux [ 108.889046] iwlwifi 0000:25:00.0: enabling …