Samsung Chromebook Plus v1 (gru-kevin)

Keyboard

apt install keyd

Id needs to fit or your touchpad will be broken ... use keyd monitor to check.

/etc/keyd/default.conf

[ids]
0000:0000:af5c732c

[meta]
# function keys

f1 = back
f2 = forward
f3 = f5
f4 = f11
# M-f8 means to send Meta+F8
f5 = M-f8
f6 = brightnessdown
f7 = brightnessup
f8 = mute
f9 = volumedown
f10= volumeup

# Arrow keys
left  = home
right = end
up    = pageup
down  = pagedown

backspace = delete

German Umlauts

Use the german keyboard variant for US keyboards (in GUI its called German(US)). Enables the right Alt key for ÖÄÜ and ß (S) also Euro is sane on E now.

/etc/X11/xorg.conf.d/germanlayout.conf

Section "InputClass"
    Identifier "system-keyboard"
    MatchIsKeyboard "on"
    Option "XkbModel" "pc105"
    Option "XkbLayout" "de"
    Option "XkbVariant" "us"
    # not needed, default works fine: Option "XkbOptions" "lv3:ralt_switch"
EndSection

Touchpad

/etc/X11/xorg.conf.d/touchpad.conf

Section "InputClass"
    Identifier "system-touchpad"
    MatchIsTouchpad "on"
    Driver "libinput"
    # this together with buttonareas got me best of both worlds, needs more testing
    Option "Tapping" "on"
    #Option "ClickMethod" "clickfinger"
    Option "ClickMethod" "buttonareas"
    # this to true turns it into touchscreen scrolling
    Option "NaturalScrolling" "false"
EndSection

Wifi

Try disabling powersave:

/etc/NetworkManager/conf.d/99-mwifex.conf

[connection]
wifi.powersave = 2

[device]
wifi.scan-rand-mac-address=false

Try disabling driver options:

/etc/modprobe.d/mwifiex.conf

options mwifiex_pcie power_save=0
options mwifiex_pcie disable_hw_scan=1
options mwifiex_pcie roam_off=1

updateinitramfs -u and reboot.

5 GHz

In my case getting wifi stable was fixing the chip to only use 2.4 Ghz networks.

NetworkManager problems

If you use network manager it will react to a closed lid and try to sleep even though the system itself is not configured to sleep:

/etc/NetworkManager/conf.d/99-ignoresleep.conf

[main]
no-auto-default=*
ignore-carrier=1
sleep = false
sleep-delay=0

/etc/systemd/logind.conf

HandleLidSwitch=ignore
#HandleLidSwitchDocked=ignore # already default
# Inhibitors are other programs using systemd-inhibit to prevent sleep, etc. 
# normally loginctl would ignore these on a lid close action and still sleep, so this =no disables this
LidSwitchIgnoreInhibited=no

if you want more rabbithole you can do a systemd-inhibit --list and check whats interfering with logind

Use iwd and systemd-networkd to stay sane

apt install iwd iwgtk

Remove NetworkManager and just use the integrated iwd management

sudo systemctl stop NetworkManager
sudo systemctl disable NetworkManager
sudo apt purge network-manager -y

sudo systemctl enable systemd-networkd --now
sudo systemctl enable systemd-resolved --now

/etc/iwd/main.conf

[General]
EnableNetworkConfiguration=true
NameResolvingService=systemd

Scan for wifi:

iwctl
[iwd]# device list
[iwd]# station wlan0 scan
[iwd]# station wlan0 get-networks
[iwd]# station wlan0 connect "YourSSID"

or just use iwgtk

Change the preferred connection:

/var/lib/iwd/ssid.psk

[Settings]
AutoConnect=true

According to Arch this is the only way to prefer a network

disable powersave service

Without networkmanager you need a service that runs this on start, etc.

/etc/systemd/system/wlan-always-on@.service

[Unit]
Description=Keep wireless device %i from sleeping.
After=network.target

[Service]
ExecStart=/usr/sbin/iw %i set power_save off

[Install]
WantedBy=default.target

systemctl enable —now wlan-always-on@wlan0.service