Lenovo IdeaPad Flex 3 CB 11IGL05 Chromebook

Hardware
PCI/USB ID
Working?
GPU
8086:3185
Yes
MicroSD card reader
Yes
Keyboard
Yes
Wi-Fi
8086:31dc
Yes
Bluetooth
8087:0aaa
Yes
Audio
8086:3198
Yes
Touchpad
04f3:00a2
Yes
Touchscreen
Yes
Webcam
30c9:001c
Yes
Firmware
This device is not supported by
fwupd
. To change or update the firmware, follow the instructions in
Chrome OS devices/Custom firmware
.
This Chromebook does not support
Legacy Boot Mode
. Even if you try to invoke it by pressing
Ctrl+l
on the Developer Mode boot screen, it will show two options without a choice. Therefore it is necessary to flash a custom firmware before the installation.
Warning
This step relies on third-party scripts and firmware and may damage your hardware or data.
After performing this step, it will not be possible to use ChromeOS (unless you flash the original firmware back).
Note
If you decide to boot without the battery to disable Firmware Write Protection, remove the battery according to
the official manual
and do not connect it back until the new firmware is flashed.
If your Chromebook has turned into a brick, you can try to
unbrick
it by flashing the original firmware with a special cable called
SuzyQable
.
Disable Firmware Write Protection by booting without battery (use original power supply) or
using SuzyQable
.
Enable Developer Mode
.
Use MrChromebox's
Firmware Utility Script
.
Accessibility
The appearance of the
SeaBIOS
is pretty simple and not very colorful, so it might work well with OCR software because it is completely in text mode.
Note
Blind users should request the help of a sighted person to change BIOS settings
Installation
Note
Use UEFI-compatible
boot loaders
.
The MMC disk is
/dev/mmcblk0
.
Use
auditctl(8)
to suppress audit messages that appear every second:
# auditctl -e0
Follow the
Installation guide
.
Audio
The factual accuracy of this article or section is disputed.
Reason:
PulseAudio is a hardware-independent thing. If there is a reason for its recommendation—such reason should be stated, or PulseAudio recommendation should be removed, or replaced with a list like "JACK, PipeWire, PulseAudio". (Discuss in
Talk:Lenovo IdeaPad Flex 3 CB 11IGL05 Chromebook
)
Install the following packages:
sof-firmware
— sound driver
alsa-ucm-conf
— contains
ALSA
configuration profile for
sof-glkda7219max
device
pulseaudio
—
PulseAudio
pulseaudio-alsa
— required to connect ALSA with PulseAudio
acpid
— required to correctly respond to headset plug in
pulseaudio-bluetooth
— optional, required for Bluetooth headsets
alsa-utils
— optional, can be used to control the sound from a terminal (e.g.
alsamixer(1)
)
Create the following script to switch sinks with
acpid
when plugging in a 3.5mm jack headset:
/etc/acpi/headphones_jack.sh
#!/bin/bash
case "$1" in
    jack/headphone)
        case "$2" in
            HEADPHONE)
                case "$3" in plug)
                    for i in `users` #adjust the sink for all active users
                    do
                        userid=`id -u $i` #get the ID for a user
                        sudo -u "$i" XDG_RUNTIME_DIR=/run/user/$userid pacmd set-default-sink alsa_output.pci-0000_00_0e.0-platform-glk_da7219_mx98357a.HiFi__hw_sofglkda7219max_1__sink
                    done
                    ;;
                esac 
                ;;
        esac
        ;;
esac
Make the script
executable
.
Register the script as a listener:
/etc/acpi/events/headphones_jack
event=jack/headphone
action=/etc/acpi/headphones_jack.sh %e
Enable
acpid.service
, the sound should work after reboot.
Function keys
Default assignment
This Chromebook model
[1]
has many of the Chromebook special keys and they are mostly assigned correctly.
The
Search
key is assigned to
Super
by default.
Key
Visible?
Marked?
Effect
previous
Yes
Yes
Previous/Back
next
Yes
Yes
Next
refresh
Yes
Yes
Refresh/Reload
full screen
Yes
1
Yes
No default action -> adjust to
F11
overview
Yes
Yes
"Scale" action --> adjust to
PrintScreen
decrease brightness
Yes
Yes
Decrease Brightness
increase brightness
Yes
Yes
Increase Brightness
mute
Yes
Yes
Mute toggle
decrease volume
Yes
Yes
Decrease Volume
increase volume
Yes
Yes
Increase Volume
lock
Yes
Yes
Sleep
Search
Yes
Yes
Assigned "Left Meta" =
Super
This key is visible to kernel/udev but not within X11.
The following table gives an overview of the underlying default keycodes. This information is needed to change the configuration.
See
Keyboard input
for more information
Chromebook special key
Scancode
Keycode
Keysym
previous
ea
158
KEY_BACK
next
e9
159
KEY_FORWARD
refresh
e7
173
KEY_REFRESH
full screen
91
372
KEY_ZOOM
overview
92
120
KEY_SCALE
decrease brightness
94
224
KEY_BRIGHTNESSDOWN
increase brightness
95
225
KEY_BRIGHTNESSUP
mute
ea0
113
KEY_MUTE
decrease volume
ae
114
KEY_VOLUMEDOWN
increase volume
b0
115
KEY_VOLUMEUP
lock
5d
142
KEY_SLEEP
Adjust non-responsive keys for Xorg
There is only one key that is completely unresponsive in Xorg, because the keycode is above 255:
KEY_ZOOM
has a keycode of 371.
By changing this key to an unused key with a lower keycode we can resolve this issue.
Create the following file as root:
/etc/udev/hwdb.db/60-keyboard.hwdb
evdev:atkbd:dmi:bvn*:bvr*:bd*:svn*:pn*:pvr*
 KEYBOARD_KEY_91=coffee
and
update the hardware database index
.
After reboot you will see this change in the table above:
Chromebook special key
Scancode
Keycode
Keysym
full screen
91
152
KEY_SCREENLOCK
Create additional key bindings
To also have function keys, Chromebook shortcuts (page-up, home, delete, ...) by using a combination of the Search key (that is assigned meta or
Super
by default) as an overlay, there are many options:
xbindkeys
,
sxhkd
,
desktop environments
keyboard shortcuts,...
A good option is
keyd
, because this way all the bindings work in console, Xorg and Wayland without any delay.
After installing, create the following file:
/etc/keyd/chromebook.conf
[ids]
*

[main]
coffee = f11 # reassign the coffee/scrollock key to F11 to emulate full-screen within most window managers
scale = print # reassign the scale key to printscreen

[meta] #assign the leftmeta (search) key as an overlay key, do not forget to hold the "search" key to use the shortcuts below
back = f1
forward = f2
refresh = f3
coffee = f4
scale = f5
brightnessdown = f6
brightnessup = f7
mute = f8
volumedown = f9
volumeup = f10
up = pageup
down = pagedown
left = home
right = end
backspace = delete
Enable/start
keyd.service
.
This makes it possible to go to a console tty by holding
Ctrl+Alt+Search+Back
(which is translated to
Ctrl+Alt+F1
)
And also to come back to graphical mode by holding
Ctrl+Alt+Search+BrightnessUp
(which is translated to
Ctrl+Alt+F7
)
See also
Lenovo » Product Specifications Reference (PSREF) - IdeaPad Flex 3 CB 11IGL05
Lenovo » Hardware Maintenance Manual - Flex 3 CB-11IGL05