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High Sierra in q9550 and r9 270x 4Gb. No acceleration.

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Ernest
Posts: 2
Joined: 10 Aug 2019, 13:22
CPU: q9550
Motherboard: p5q se plus
GPU: r9 270x

High Sierra in q9550 and r9 270x 4Gb. No acceleration.

Post by Ernest » 17 Aug 2019, 05:01

Hi. I'm trying to install High Sierra in a 775 build with q9550 and Sapphire Dual-X R9 270X OC 4 GB with this GPU-Z specs:
[External Link Removed for Guests]. which is supposed to work OOB but I can only reach black screens and no signals.
I tried all kinds of combinations with clover, lilu and wg, injecting framebuffer, patching kexts, etc... but I could only initialize the system in safe mode, graphics recognized as Amd Radeon HD 7xxx 4096 Mb and id device 0x6810; or using, this is a bit weird, id device 0x6811 with inject ati and fix display, in which case recognized as Amd Radeon R9 270x 8 Mb Vram and id device 0x6811 and of course without acceleration in any case.
I have run out of ideas and would like to ask for your help, thank you for your great work and apologize for my bad English
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MaLd0n
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High Sierra in q9550 and r9 270x 4Gb. No acceleration.

Post by MaLd0n » 17 Aug 2019, 17:23

Ernest, u try with radpg=15?
DSDT.aml.zip
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Ernest
Posts: 2
Joined: 10 Aug 2019, 13:22
CPU: q9550
Motherboard: p5q se plus
GPU: r9 270x

High Sierra in q9550 and r9 270x 4Gb. No acceleration.

Post by Ernest » 17 Aug 2019, 18:51

Yes, with and without radeondeinit and other combinations, resulting black screen. Thank you very much for the dsdt
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