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Author Topic: A1222+ and Radeon RX550 - works in boot menu but not AmigaOs 4.1  (Read 370 times)

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Offline kubatyszkoTopic starter

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A1222+ and Radeon RX550 - works in boot menu but not AmigaOs 4.1
« on: February 08, 2026, 07:03:35 PM »
Hi there,
I have a brand new A1222+ (Topaz), installed OS4.1 and it’s working fine with the built in GPU.
When I install my Radeon RX550 (the same type as ready-made A1222+ have but different manufacturer). it works in the boot menu, I also see the OS startup progress bar with drivers loading etc,
But it never shows the AmigaOS 4.1 logo.
I’m wondering there’s a driver I need to activate or some other issue?
 

Offline Rob

Re: A1222+ and Radeon RX550 - works in boot menu but not AmigaOs 4.1
« Reply #1 on: February 08, 2026, 08:46:18 PM »
Do you have the Enhancer package installed?  The RX driver is part of Enhancer and isn't included with OS4.1.
 

Offline kubatyszkoTopic starter

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Re: A1222+ and Radeon RX550 - works in boot menu but not AmigaOs 4.1
« Reply #2 on: February 09, 2026, 01:50:47 AM »
I didn’t. I just installed it and I get the same behavior.
Is there a “wrong ” way to install it?
I did the full novice install (because it was too much work confirming everything).
 

Offline kubatyszkoTopic starter

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Re: A1222+ and Radeon RX550 - works in boot menu but not AmigaOs 4.1
« Reply #3 on: February 09, 2026, 06:54:46 AM »
I just did a full wipe and reinstall of the OS and the Enhancer - same situation.
I checked, and the RadeonRX.chip line is in my Kicklayout, which seems to be the only requirement for the driver to work. I only have one section in the Kicklayout.
Could this have anything to do with the fact that my Radeon only has DisplayPort outputs ?

Thanks
 

Offline OldAmigan

Re: A1222+ and Radeon RX550 - works in boot menu but not AmigaOs 4.1
« Reply #4 on: February 10, 2026, 06:11:53 PM »
@kubatyszko

I only have Display Ports on my Radeon R550 card in my A1222 Plus and it works fine.

Is the monitor OK for the resolution you are using? Or is the correct resolution in the list?

When I first got my setup, even after a fresh installation, I had problems until I manually inserted the resolutions I wanted in Prefs:ScreenMode preferences/Monitorscli


« Last Edit: February 10, 2026, 06:18:42 PM by OldAmigan »