Post Install

TIP

Install Chrultrabook Tools for fan controls, keyboard backlight controls, system information and more.

Windows

Drivers and QOL improvements

  • Compress the install with compact.exe /compactos:always in a Command Prompt with admin privileges if necessary.
  • Install CoolStar's drivers if you haven't already
  • Buy audio and Thunderbolt/USB4 drivers (if needed), see CoolStar's driver portal

CELES Post Install Workaround (Windows)

  1. Boot the Windows install media you used to install Windows.
  2. Click "Repair my computer" and select the Command Prompt option.
  3. Type bcdedit /set {default} useplatformclock true and press Enter.
  4. Reboot

Linux

General QOL Fixes

Fixing USB C on TigerLake and AlderLake

  1. Create a file called chromebook-usbc.service file in /etc/systemd/system/

  2. Paste the following contents into the file:

    [Unit]
Description=Enable USB-C on chromebook

[Service]
Type=oneshot
RemainAfterExit=yes
ExecStartPre=/sbin/modprobe -r -a cros-ec-typec intel-pmc-mux
ExecStart=/sbin/modprobe -a intel-pmc-mux cros-ec-typec

[Install]
WantedBy=multi-user.target

  3. Enable the systemd service by typing systemctl enable --now chromebook-usbc.service, then it should work.

CELES Post Install Workaround Possible (Linux)

If you experience issues in applications such as Parsec, or encounter disruptive freezes, adding the kernel parameters clocksource=hpet hpet=force may fix your problem. The following instructions assume you are using GRUB, and will be different for other bootloaders. Do your own research on how to set kernel parameters in your bootloader if these do not apply.

  1. Edit /etc/default/grub with your preferred text editor (e.g. nano).
  2. Add clocksource=hpet hpet=force inside of GRUB_CMDLINE_LINUX_DEFAULT and save your changes. If you exclude either parameter, this will not work. Use sudo, su, or doas if necessary.
  3. Type grub-mkconfig -o /boot/grub/grub.cfg or update-grub into a terminal and press Enter. Use sudo, su, or doas if necessary.
  4. Reboot

Fixing stylus orientation in Gnome

Some Chromebooks come with USI styluses. They work fine in the newest versions of KDE Plasma, but they have a rotation issue in GNOME. The issue is that the stylus does not rotate with the screen, so it is only usable in one orientation. To fix this, we have to add an libinput override.

  1. Get the device ID of your stylus This information can either be read from cbmem or libwacom. To get the ID from libwacom run this script https://github.com/linuxwacom/libwacom/blob/master/tools/show-stylus.py.

    tux@fedora:~/Downloads/libwacom/tools$ sudo python ./show-stylus.py 
Using "GDIX0000:00 27C6:0E0C Stylus": /dev/input/event5
Using stylus file(s): /usr/share/libwacom/libwacom.stylus
Tool id 0x1 serial 0x0 in-proximity: False 
^CTerminating
Suggested line for .tablet file:
Styli=isdv4-aes

    In this case, the device ID is GDIX0000:00 27C6:0E0C Stylus.

  2. Create a .tablet file for libwacom

    sudo mkdir -p /etc/libwacom/
sudo nano /etc/libwacom/google-{your board name}.tablet

    Add the following content to the file:

    [Device]
Name={your device id}
ModelName=
DeviceMatch=i2c:{the hardware id of your stylus lowercased (in this case 27c6:0e0c)}
Class=ISDV4
Width=9
Height=5
IntegratedIn=Display;System
#Styli=isdv4-aes
Styli=@generic-no-eraser

[Features]
Stylus=true
Touch=false

  3. Create the libinput override

    sudo mkdir -p /etc/libinput/
sudo nano /etc/libinput/local-overrides.quirks

    Add the following content to the file:

    [Google Chromebook {your board name} Stylus Digitizer]
MatchUdevType=tablet
MatchDeviceTree=*{your board name}*
MatchBus=i2c
ModelChromebook=1
AttrPressureRange=1100:1000

  4. Update the libwacom database and restart the system

    sudo libwacom-update-db
reboot

Example Files for Jinlon

Here are the example files for the Jinlon Chromebook. The device ID is GDIX0000:00 27C6:0E0C Stylus.

/etc/libwacom/google-jinlon.tablet

[Device]
Name=GDIX0000:00 27C6:0E0C Stylus
ModelName=
DeviceMatch=i2c:27c6:0e0c
Class=ISDV4
Width=9
Height=5
IntegratedIn=Display;System
#Styli=isdv4-aes
Styli=@generic-no-eraser

[Features]
Stylus=true
Touch=false

/etc/libinput/local-overrides.quirks

[Google Chromebook Jinlon Stylus Digitizer]
MatchUdevType=tablet
MatchDeviceTree=*jinlon*
MatchBus=i2c
ModelChromebook=1
AttrPressureRange=1100:1000

Consider Upstreaming Your Changes to libwacom

Please consider upstreaming your changes to libwacom and wacom-hid-descriptors. This will help other users with the same device as you.

macOS

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