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U2F on Linux

Little over a year ago I ordered 2 Yubico U2F security keys, through the Github offer. When they arrrived, I was immediately annoyed by the fact that only Chrome (and Chromium) supported the U2F standard. At that time, my main browser, did not support U2F at all, and the feature request had been open for a year, with no real progress. Sigh.

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I2S audio on XPS13 with Linux 4.5

While upgrading the Linux kernel on my XPS13, I noticed that I could no longer find the option to enable the ASoC driver that is needed when the sound card is running in I2S mode. The symbol (SND_SOC_INTEL_BROADWELL_MACH) was still there, but it didn't show up at the expected location. I also had all dependencies enabled, so I was a bit surprised it didn't show up.

After looking again, I noticed this in the dependencies:

DW_DMAC_CORE [=m]=y

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WOL broken after updating NetworkManager to 1.0.6

Some time ago I noticed that I could no longer boot a remote machine via Wake-on-LAN. This annoyed me quite a bit, as the machine was 2100km away and there was nobody at that location who could boot it for me. I really had no clue why it stopped working. So when I recently arrived at the location again, I started looking into it. Everything I had previously configured was still in place.

The BIOS option Power On by PCIE devices was enabled, and I still had this in /etc/local.d/wol.start:

#!/bin/sh

ethtool -s eth0 wol g

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