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 21 
 on: October 05, 2018, 03:35:36 PM 
Started by eVasilis - Last post by overshoot
Quote

Any idea technically why this might be?  I get it for the 4,1s since they don't have AES-NI in the X55xx chips, but the 5,1s have all X56xx chips which should support AES-NI.


You didn't understand the reason why they were saying to disable Filevault...

It is simply a workaround on non Mac graphic card where you have no EFI part.
Since your screen is going to remain black until the OS is loaded with the drivers, that means you won't be able to type your Filevault password at boot ;-)

 22 
 on: October 05, 2018, 09:48:05 AM 
Started by netkas - Last post by mad davey
I really hate asking this but I have spent much time now reading the entire forum multiple times and have gotten a little frustrated.  I see people that had similar problems simply did not use the correct device id.  I believe I did.  At first I thought it worked because I got boot screen over dvi but mini DP stopped working.   I backed up the bios then used the script here on my MSI GV-R795WF3-3GD that has the FX1 bios.  What am I doing wrong? I suspect the problem is in the line "ValueError: chr() arg not in range(256)".  Any hints would be greatly appreciated.  Thanks for all the work you've done and made available.

 ./makerom.sh --efifile=7950mac.efi --romfile=efiromheader.rom --originalrom=R795W3GD.rom --devid=679a
running on 7950mac.efi, efiromheader.rom with devid 679a
Patching files 7950mac.efi, efiromheader.rom for device-id 0x679a
Successfully patched efi file
Successfully patched efi rom file

Orig Size = 125440
Comp Size = 47591
47591+0 records in
47591+0 records out
47591 bytes transferred in 0.262624 secs (181213 bytes/sec)
EFI part is ready at 679a.efipart.rom
orig size - 65536
65536+0 records in
65536+0 records out
65536 bytes transferred in 0.366960 secs (178592 bytes/sec)
Before:
OpRom (size=65536, indicator_offset=0x249, indicator=0x0, checksum=0x0)
OpRom (size=48128, indicator_offset=0x31, indicator=0x80, checksum=0x0)
RawData (size=17408)
Traceback (most recent call last):
  File "fixrom.py", line 110, in <module>
    op_rom.fix()
  File "fixrom.py", line 90, in fix
    self.data[-1] = chr(0x100 - sum)
ValueError: chr() arg not in range(256)
the rom is ready at R795W3GD.rom.efi.rom


My machine is mac pro 5,1 with high sierra, also tried a late 2013 mac pro with sierra also an upgraded 4,1.  I've tried using my cards actual rom as well as downloading the same Fx1 rom from Gigabyte and using it.  I've installed java (fixed java nag) and python and home brew as some here recommended (nothing changed).  I suspect the fixrom.py portion of the script is the part I am having issues with.  Does the script require the video card to be in the machine running the script?  My understanding is no, and my card is in a pc for programming but I might try moving it next since I'm out of ideas.  Thanks.


Also Rominators file says device mismatch or something like that so I did not move forward with that.

 23 
 on: October 04, 2018, 11:05:15 PM 
Started by eVasilis - Last post by Fangio
... has anyone managed to get a second display working with a cMP on Mojave?  I see the nice 5GT/s now, but both a RX580 and R9 280x will not drive a second display irrespective of whether the display is HDMI or DP

Can't confirm that for 280X, see pics. The Samsung TV is connected via HDMI.

Btw this Gigabyte card just shows "Metal: Supported" in System Prefs so far. I've noticed now that OpenGL Extensions Viewer does support Mojave, it also has a lot more to say about the Metal feature sets supported by capable cards



 24 
 on: October 04, 2018, 06:45:41 PM 
Started by Rominator - Last post by BrianBotts
Has anyone got two displays working with Mojave and an AMD card?

 25 
 on: October 04, 2018, 06:35:00 PM 
Started by eVasilis - Last post by BrianBotts
Funny that Apple provide support for unsupported GPUs telling you to disable Filevault... ;-)

Any idea technically why this might be?  I get it for the 4,1s since they don't have AES-NI in the X55xx chips, but the 5,1s have all X56xx chips which should support AES-NI.

Lastly, has anyone managed to get a second display working with a cMP on Mojave?  I see the nice 5GT/s now, but both a RX580 and R9 280x will not drive a second display irrespective of whether the display is HDMI or DP.

 26 
 on: October 04, 2018, 07:28:26 AM 
Started by Rominator - Last post by moopha
Got it, that's good


But ROM is still expected, is there any progress?

 27 
 on: October 03, 2018, 09:53:18 PM 
Started by Rominator - Last post by Rominator
yes, that should work

 28 
 on: September 29, 2018, 09:19:22 AM 
Started by Rominator - Last post by moopha
Hey, Rominator, what size of ROM is expected in kilobytes?

My particualar 780M has a GD GD25Q20 EEPROM chip onboard, which capacity is 2048Kbit/258 Kbytes.
Is it enough to fit?
According to TechPowerUp BIOS database, none of 6 BIOSes exceed 164KB.

 29 
 on: September 29, 2018, 01:07:27 AM 
Started by Fl0r!an - Last post by Rominator
hdmi and dvi are very similar

at least for resolutions of 1920x1080 and under

hdmi to dvi adapter should be like $5, just same wires in different arrangement

 30 
 on: September 29, 2018, 01:03:11 AM 
Started by Rominator - Last post by Rominator
i got messaged that this thread was getting discussed at MR

i really hope to finish the rom, but I may be overlooking something simple

a perfect example is in the MR iMac thread.

A guy got a 21" from a Uni and  mistakenly says it is Firmware Password locked.

But he describes a folder with flashing question mark on boot.

This has been the "I can't find a boot drive" behavior as far back as I can remember.

but lots of helpful folks are outdoing themselves trying to help him get firmware issue fixed, an issue he doesn't have

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