User:GNUtoo/E350M1
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Contents
1 Basic network settings
1.1 Rename the interfaces
Find the MAC addresses of your cards:
# ip addr
[...]
2: enp0s13: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN qlen 1000
link/ether 00:0d:b9:0c:d5:34 brd ff:ff:ff:ff:ff:ff
3: wlp0s14: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN qlen 1000
link/ether 00:1d:19:e2:a2:10 brd ff:ff:ff:ff:ff:ff
Add your MAC address to etc/udev/rules.d/10-network.rules
SUBSYSTEM=="net", ACTION=="add", ATTR{address}=="00:0d:b9:0c:d5:34", NAME="wired_int"
SUBSYSTEM=="net", ACTION=="add", ATTR{address}=="00:1d:19:e2:a2:10", NAME="wireless_int"
2 Low Noise/Power/Heat
2.1 /etc/udev/rules.d/01-pm.rules
That implements what is said in the arch wiki page on power management
##############
# Runtime PM #
##############
# PCI
ACTION=="add", SUBSYSTEM=="pci", ATTR{power/control}="auto"
# SATA
ACTION=="add", SUBSYSTEM=="scsi_host", KERNEL=="host*", ATTR{link_power_management_policy}="min_power"
# hdparm
ACTION=="add", KERNEL=="[hs]d[a-z]", ATTR{queue/rotational}=="1", RUN+="/usr/bin/hdparm -B 1 -M 128 /dev/%k"
# Disable unused "wake on lan"
ACTION=="add", SUBSYSTEM=="net", KERNEL=="eth*", RUN+="/usr/bin/ethtool -s %k wol d"
ACTION=="add", SUBSYSTEM=="net", KERNEL=="wlan*", RUN+="/usr/bin/ethtool -s %k wol d"
# Various subsystems runtime power management
ACTION=="add", SUBSYSTEMS=="*", TEST=="power/control", ATTR{power/control}="auto"
ACTION=="add", SUBSYSTEMS=="*", TEST=="parameters/power_save", ATTR{parameters/power_save}="1"
# For cpupower.service
ACTION=="add", SUBSYSTEM=="module", KERNEL=="cpufreq_userspace", TAG+="systemd"
2.2 /etc/systemd/system/cpupower.service
I set the CPU frequency to 800Mhz with the userspace governor. The issue I have is that the cpupower binary is run before /sys/devices/system/cpu/cpu*/cpufreq/scaling_governor are present, which result in it failing to set its frequency.
To workarround that I overrided the unit to make it wait for the sysfs paths to appear. The paths are not available by default in systemd so I added the systemd tag to them in /etc/udev/rules.d/01-pm.rules
[Unit] Description=Apply cpupower configuration Requires=sys-module-cpufreq_userspace.device After=sys-module-cpufreq_userspace.device [Service] Type=oneshot ExecStart=/etc/systemd/system/scripts/cpupower RemainAfterExit=yes [Install] WantedBy=multi-user.target
2.3 /etc/default/cpupower:
freq=800Mhz
2.4 /etc/modprobe.d/pm.conf:
# The led makes light, not good for sleeping at night options ath9k blink=0
