Collection of kernel and configuration tweaks to get the best experience on Linux with the Dell Pro Max 16 MC16255 laptop with AMD Radeon 890M GPU.

See also: Fingerprint reader setup, Video codecs

Add kernel parameters:

sudo grubby --update-kernel=ALL --args="amdgpu.dcdebugmask=0x410 amdgpu.sg_display=0"
sudo reboot

What each parameter does:

Additionally, disable audio interface suspension in Wireplumber. Create ~/.config/wireplumber/wireplumber.conf.d/51-disable-suspension.conf:

monitor.alsa.rules = [
  {
    matches = [ { node.name = "~alsa_output.*" } ],
    actions = { update-props = { session.suspend-timeout-seconds = 0 } }
  }
]

Restart Wireplumber:

systemctl --user restart wireplumber

Dell laptops come with a different fingerprint readers. Some of them work out of the box in Fedora and that was my expierince with Precision series. However, my new Dell Pro Max 16 MC16255 came with a different unsupported fingerprint.

Find your fingerprint reader

sudo lsusb

You should see something like this:

Bus 003 Device 002: ID 0a5c:5865 Broadcom Corp. 58200

Where 5865 is the model of the fingerprint reader. There are some copr repositories around that provide support for some of the models, but not for 5865.

There is a good article on Reddit that explains how to get it working.

The solution is to manually install the released driver from Dell for Ubuntu.

Go to Dell support site and download the latest libfprint-2-tod1-broadcom-cv3plus orig package.

Extract it and move:

../usr/lib/x86_64-linux-gnu/libfprint-2/tod-1/libfprint-2-tod-1-broadcom-cv3plus.so

to

../usr/lib64/libfprint-2/tod-1/libfprint-2-tod-1-broadcom-cv3plus.so

One-liner:

mkdir -p ../usr/lib64/libfprint-2/tod-1/ && mv ../usr/lib/x86_64-linux-gnu/libfprint-2/tod-1/libfprint-2-tod-1-broadcom-cv3plus.so $_

Run the included install script:

sudo ./install.sh

Replace libfprint package:

sudo dnf copr enable quantt/libfprint-tod -y
sudo dnf swap libfprint libfprint-tod -y

Programmatically add your fingerprint:

sudo setenforce 0
sudo systemctl restart fprintd
fprintd-enroll
sudo ausearch -m avc,user_avc,selinux_err -ts today | sudo audit2allow -M fprintd_SELinux
sudo semodule -i fprintd_SELinux.pp
sudo setenforce 1

To enable fingerptint authentication:

sudo authselect enable-feature with-fingerprint
sudo authselect apply-changes

Fingerprint configuration should be also available in GNOME Settings under “Users”.