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Re: SAM440 - R9250 vs HD 7750 benchmarks

Subject: Re: SAM440 - R9250 vs HD 7750 benchmarks
by sailor on 2021/4/25 17:47:59

@geennaam
Quote:
From what i've read in other threads, the RadeonHD driver tries to improve memcopy speed with changing settings in PEX811x bridges. So maybe that's the source of the issue. It was reason for me to try another bridge.

I think, you are right.

I check the debug output, and with use of PEX8111 bridge, there is allways error with AtomBios
RadeonHD (0): ERRORAtomBIOS is stuck in a loop for more than 5 secondsAborting 
RadeonHD 
(0): ERRORAtomBIOS stuck executing C302 (len 321WS 0PS 4) @ 0x0072Aborting
RadeonHD.chip (0):  ParseTable saidCD_INFINITE_LOOP_ENCOUNTERED  
RadeonHD
.chip (0): rhdOpenAsicInit failedWon't be able to obtain VRAM FB scratch space 
RadeonHD (0): ERROR: AtomBIOS is stuck in a loop for more than 5 seconds. Aborting 
RadeonHD (0): ERROR: AtomBIOS stuck executing C302 (len 321, WS 0, PS 4) @ 0x0072. Aborting. 
RadeonHD.chip (0):  ParseTable said: CD_INFINITE_LOOP_ENCOUNTERED

then Radeon recognized correctly conectors and connected monitor, and black screen.


With PI7C9X bridge Atombios works normally.

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