[BUG] AMD Radeon Pro 5600M with 8GB of HBM2 memory shows blank screen on Linux

From: Aditya Garg
Date: Mon Dec 26 2022 - 05:44:45 EST

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The AMD Radeon Pro 5600M with 8GB of HBM2 memory GPU is found in MacBook Pro 16 inch, 2019 (MacBookPro16,4).

The GPU fails to work on Linux, thus a blank black screen gets displayed on boot.

If nomodeset is added as a kernel parameter, we are able to access Linux easily.

The link below contains the journalctl of the failed boot :-
https://gist.github.com/AdityaGarg8/dfe1a1c23bf2b92b640dad89f55b73c7

Thanks
Aditya

Next message: Dust Li: "Re: [RFC PATCH net-next v2 0/5] net/smc:Introduce SMC-D based loopback acceleration"
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Next in thread: Alex Deucher: "Re: [BUG] AMD Radeon Pro 5600M with 8GB of HBM2 memory shows blank screen on Linux"
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