Can't remove video-nvidia-430xx driver towards video-nvidia-450xx

The system fails to install video-nvidia-450xx driver stumbling on removing current video-nvidia-430xx driver.

Attempts:

$ sudo mhwd -r pci video-nvidia-430xx
> Removing video-nvidia-430xx...
Sourcing /etc/mhwd-x86_64.conf
Has lib32 support: true
Sourcing /var/lib/mhwd/local/pci/video-nvidia-430xx/MHWDCONFIG
Processing classid: 0300
Sourcing /var/lib/mhwd/scripts/include/0300
Processing classid: 0302
проверка зависимостей...
ошибка: не удалось подготовить транзакцию (не удалось удовлетворить зависимости)
:: removing linux54-nvidia-430xx breaks dependency 'nvidia' required by nvidia-xrun
Error: pacman failed!
Error: script failed!

$ sudo mhwd -i pci video-nvidia-450xx
> Installing video-nvidia-450xx...
Sourcing /etc/mhwd-x86_64.conf
Has lib32 support: true
Sourcing /var/lib/mhwd/db/pci/graphic_drivers/nvidia-450xx/MHWDCONFIG
Processing classid: 0300
Sourcing /var/lib/mhwd/scripts/include/0300
Processing classid: 0302
проверка зависимостей...
ошибка: не удалось подготовить транзакцию (не удалось удовлетворить зависимости)
:: removing linux54-nvidia-430xx breaks dependency 'nvidia' required by nvidia-xrun
Error: pacman failed!
Error: script failed!

Details:

$ inxi -G
Graphics:  Device-1: Intel UHD Graphics 630 driver: i915 v: kernel
           Device-2: NVIDIA GP106M [GeForce GTX 1060 Mobile] driver: nvidia v: 430.64
           Device-3: Realtek Integrated Webcam type: USB driver: uvcvideo
           Display: x11 server: X.Org 1.20.8 driver: modesetting,nvidia resolution: 1920x1080~60Hz
           OpenGL: renderer: GeForce GTX 1060 with Max-Q Design/PCIe/SSE2 v: 4.6.0 NVIDIA 430.64

KDE Plasma Version: 5.19.4
KDE Frameworks Version: 5.73.0
Qt Version: 5.15.0
Kernel Version: 5.8.3-2-MANJARO
Graphics Processor: GeForce GTX 1060 with Max-Q Design/PCIe/SSE2

Hi!
Remove 450, remove 430 and other packages’ 430 needs, reboot, install 450

Hi,

video-nvidia-450xx is not installed.

First, remove nvidia-xrun. Then try again. Afterwards, you can re-install nvidia-xrun if you need it.

It ended with “Failed to start simple display desktop manager” with NO boot.
Had to
mhwd -a pci nonfree 0300
to t least boot the system.
But now got another issue - no sound over HDMI.

Solved with

mhwd -a pci nonfree 0300

(from another TTY)

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