until roughly 1 hour ago I had similar issues. Now I'd like to publish my solution and hope that it may help some of you ;)

Prerequisites:

First of All - My Setup:

AMD Ryzen 9 7950X (With integrated AMD graphics)
AMD RX 6650XT GPU
On MSI MPG X670E Carbon WIFI Mainboard

As OS I'm running a fresh install of Kubuntu 22.04.3
(Should be identical to Ubuntu 22.04.3)

Straight after install i ran

sudo apt update
sudo apt upgrade
sudo shutdown -h 0 (and subsequent reboot)

which got me to Kernel Version

6.2.0-33-generic (from uname -r)

At that point neither the Ryzens integrated graphics nor the RX6650XT were working, as indicated by the output of sudo lshw -c video (All *-display entries marked as UNCLAIMED)

FIX:

1. Install the deprecated libssl1.1 which was installed on a different machine of mine with an older Version of Ubuntu 22.04 (Kernel 5.15.0)

wget http://archive.ubuntu.com/ubuntu/pool/main/o/openssl/libssl1.1_1.1.0g-2ubuntu4_amd64.deb
sudo dpkg -i libssl1.1_1.1.0g-2ubuntu4_amd64.deb

2. Install amdgpu-install

wget http://repo.radeon.com/amdgpu-install/5.7/ubuntu/jammy/amdgpu-install_5.7.50700-1_all.deb
sudo dpkg -i amdgpu-install_5.7.50700-1_all.deb

3. Install AMD Drivers

amdgpu-install -y --accept-eula --opencl=rocr --opengl=mesa --vulkan=pro

Remarks:

• Read the AMD Docs regarding the options, depending on your graphics card you may need other parameters
• I ran sudo update-grub2 after installation was finished, so maybe do that aswell for good measure ;)

4. Reboot

shutdown -h 0

Hope this helps and best of luck :D