Xiaomi RedmiBook Pro 15 2022 Ryzen

Hardware
PCI/USB ID
Working?
Touchpad
27C6:01E0
Yes
Keyboard
Yes
GPU (AMD)
1002:1681
Yes
Wi-Fi
10ec:b852
Yes
Bluetooth
0cb8:c559
Yes
Webcam
2b7e:b557
Yes
Audio
1002:1640
Yes
SD-card reader
10ec:525a
Yes
Fingerprint reader
27c6:589a
Untested
This laptop has two variants, one with dedicated NVIDIA graphics and one without.
Installation
See
#Firmware
.
Accessibility
The appearance of the UEFI is pretty simple and not very colorful, so it might work well with OCR software.
Note
Blind users should request the help of a sighted person to change UEFI settings
Firmware
This UEFI setup interface has very limited options available. You can disable/enable
Secure Boot
, set/unset password, change the size of shared VRAM, change boot order, or change the date/time. But that is about what all you can do in it. Pressing
F12
during booting to select the boot device.
Note
This device does not have a BIOS speaker.
fwupd
does not support this device yet.
Secure Boot
Enter the UEFI menu by pressing
F2
during booting and disable the password and
Secure Boot
.
Security > Set password
Security > Disable Secure Boot
Reset the password by setting the password again but letting the
New Password
fields blank.
Microphone detection problem
This laptop has a SenaryTech SN6140 Audio chip. When  an external microphone is plugged in the 3.5mm port, it may not be detected.
This only happens when the resistance of the microphone of the headset (with a 4-segment TRRS plug) is lower than usual. For example, the microphone of my Anker Soundcore Q35 headset has a resistance of about 1000Ω, while the microphone my other two headsets have a resistance of about 2000Ω. 
This is probably a bug in detecting whether an OMTP/CTIA headset is plugged in or just an headphone with no microphone is plugged in. Because the resistance of the speaker in the earcup is usually much lower than that of the microphone, the audio chip might be measuring the resistance to tell them apart, and mistakes a microphone with lower resistance as a speaker.
With that in mind, you may pick one from the following ways to solve or to workaround the problem. (Or just use another microphone)
Change the resistance
You can increase the resistance of the microphone to get it detected easily. You can add a resistor of a suitable value in series to the microphone, which requires some electronics work.
Reconfigure the audio chip with
hda-verb
command
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Talk:Xiaomi RedmiBook Pro 15 2022 Ryzen
)
With this method, you can plug in your headset in a normal way and no electronics work is required.
However, I do not know what those commands actually do to the audio chip. Please only use them if you feel confident and adventurous.
Install the
alsa-tools
package.
Warning
All these commands come from a wild guess from
https://github.com/torvalds/linux/blob/f7301f856d351f068f807d0a3d442b85b2c6a01d/sound/pci/hda/patch_conexant.c#L173
and my own experiment with no datasheet or documentation of SN6140 or any other similar chips available.
First, check and save the original value of the (potential)
micbias output current comparator threshold
[
dead link
2025-11-17—HTTP 404]
. Here
/dev/snd/hwC1D0
is my device path.
0xb20
is the get-verb corresponding to the
0x320
set-verb.
0
is an unused parameter.
# hda-verb /dev/snd/hwC1D0 0x1c 0xb20 0
nid = 0x1c, verb = 0xb20, param = 0x0
value = 0x10
Here
0x10
is the unmodified value of the threshold register. Now, let's change it to some other value:
# hda-verb /dev/snd/hwC1D0 0x1c 0x320 0x08
This sets the threshold register to
0x08
. This should lower the threshold by about 500Ω on my system. Your result may differ. Other useful values include
0x0
,
0x18
,
0x20
and
0x30
. You may try different values. They seem to set different thresholds but I absolutely don't know why and how it works.
Your microphone should work with one of those values. This value seems to be persistent across reboots, and even useful when rebooting to a dual-boot Windows. After using the microphone, if you feel uncomfortable leaving that modified value, you can write back the original value:
# hda-verb /dev/snd/hwC1D0 0x1c 0x320 0x10
Substitute
0x10
to your save value if differ.
Plug in a two-step way
When you insert the plug of the headset, you can do it slowly and watch the audio input device list (for example in the KDE audio settings dialog). If you stop at a certain point, you may see a microphone appears in the list. Then you can resume the inserting and the microphone will keep working. This  method has no potential harm of unknown commands, but requires unusual usage every time you plug in a microphone.
Fingerprint reader
The fingerprint reader requires a proprietary driver from
an unknown third-party
. The author explains that "The driver is developed with an internal async framework, which is not well-prepared to be open-sourced. So only the binary is released for the time being."
See also
3rd-party project of supporting recent Redmibook's on Linux:
https://github.com/vrolife/modern_laptop/
Xiaomi's driver download page (Windows only):
https://www.mi.com/service/notebook/drivers/A39S
A
Hardware probe
of this model. Note that its wireless/bluetooth adapter and SSD have been replaced by the user.
https://linux-hardware.org/?probe=3428364c49