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
It's not the first time I write about cgroups, but a lot has changed since I wrote that post.
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
echo "GBE" > /proc/acpi/wakeup
Yet, when I ran ethtool eth0, it showed that WOL was disabled:
Since I hate typing passwords all the time, I looked for a way to automatically unlock my SSH keys at login. This guide focuses on KDE Plasma 5 and SDDM, but it should be easy to implement it for KDE Plasma 4 and other display managers as well.
A few days ago, polkit version 0.113 was marked stable on Gentoo amd64. Since the update, I could no longer suspend my system without entering the root password. Quite annoying, especially for a laptop. When canceling the polkit dialog, this appeared in the journal (yes, I am using systemd):
sep 10 05:22:52 sylvester.nomad.adlevio.net polkitd[18113]: Operator of unix-session:3 FAILED to authenticate to gain authorization for action org.freedesktop.login1.suspend for system-bus-name::1.96 [kded5 [kdeinit5]] (owned by unix-user:stijn)