390x bios leaked

Bumping VDDC(if thats it ) by 25mV or even 50mV didn't fixed black screen

 

To fix blackscreen on my card i had to bump by 75mV in AB on 390x bios But that gives huge load vddc.

 

Ahh, thanks for the info. Maybe I will be able to bump idle voltages by 75 and leave load by default
Whats ur ASIC qual and idle voltage?

 

Have you already tried to lower Memory Clocks? That's mainly the reason for me to get black screens on idle state.

 

I can't even get to desktop. Black screen at logon screen, and system is freezed. Is this what u're talking about?

BTW, VBE7's post says that we can't edit 2D/UVD voltages, so probably no workaround to get higher idle voltages by HEX editing

 

Not exactly but might be the same problem. If I choose higher memory clocks such as the default 390x mem clocks I get these black screens on 2d mode. Which memory clocks do you use?

But I thought you already booted into windows or how did you take those screenshots?

Mhh, I can't imagine why it shouldn't work since all those information are part of the BIOS. Otherwise it wouldn't make any sense why we got different voltages with different BIOSs. But it might be almost impossible to find the right spot without some documentation. There are some comments in the AtomDis header file but not especially the PowerPlay table has only a few information about the meaning of the bytes.
Where did you see that post?

 

XFX works fine with 1500mem, and screenshots were taken with this bios.
First link in google for "VBE7" it says: "You cant change 2D / UVD voltages". Probably those voltages have signature...

 

you allready changed idle voltage
with different powertable i have different idle voltage 1.000 vs 0.96x

so its prolly not signed on hawai/grenada

 

ASIC is 74.6% idle voltage is 1.008V with Sapphire TRIX OC bios for 290. Every other bios for reference cards uploaded to techpowerup and those for 390x are giving me idle below 0.980V which gives me instant blackscreen during driver installation. My r290 is ready for RMA just waiting for them to be removed from shops so i get new 390.

Sapphire did change the 2D/UVD voltages in their bioses somehow .

 

Oh kewl i thought i was one of the few who actually scam shops like that .

 

I got the AtomBios files using Git for windows from here Link:- http://cgit.freedesktop.org/~mhopf/AtomDis/

I got AtomDis from here Link:- https://applelife.ru/threads/razrabotka-vddc-kext-dlja-fakesmc.41560/

I place AtomDis with other files in one directory and regardless of using Ubuntu or Windows get error shown in screenie.

Spoiler

Why do I get this error.

OneB1t, due to low post count at present I can't reply to your PM. Here is link to my Stock UEFI Sapphire Vapor-X 290X bios.

 

Because probably sign is in this table, and you swapped it with powerplay table with signed voltages, but you cant edit them yourself...

 

That means that Sapphire can make that sign

 

It won't work on Windows.
Why do you use any pre compiled files?
Clone the source code with git and compile it with gcc by using make, then run it.

Where can I find that BIOS? It would be helpful to have two similar BIOSs (same version, same card layout) but with different voltages.

 

As not know better! LOL new learning curve!

Many thanks, will try this later

*** edit ***

I visit Sapphire Forum and these links is latest bios for 290 which given to owners for black screen fix.

Sapphire Tri-X 290 OC edition (Hynix)
Sapphire Vapor-X 290 OC edition (Hynix)

I also have Tri-X 290 STD edition bios, this one I never asked if latest, was original that came with that card.

 

Tell me what you think about these values

 

It's from that sapphire forum and you can compare with standard bios but its like two different bioses.

About that powerplay table above, ive copied entire table from sapphire bios with 25mV to asus crap bios and it did nothing, idle was same as original.
I have noticed that only fan/temps profiles were different, all other values same as asus bios. I think that sapphire did some kind of trick because afterburner reports +25mV on start not like it is on normal bios.

Spoiler

 

I'm also not sure if that PowerPlay table is the full story on Hawaii series. I suppose voltage control works quite different on Hawaii cards compared to older series. Maybe other data tables in the BIOS have also some effects.
The 390x BIOS with 290x PowerTable seems to the have the same voltage behavior than the default 390x BIOS, but its different on the 290x BIOS.

I did some comparison with older 6950 BIOSs where you have absolute values for voltage and it's quite easy to locate those values in the PowerPlay table.
But on Hawaii there are obviously no fixed voltage values. It seems that the voltage depends on conditions like temperature and current. (similar to Intel's Load Line Calibration)
Although there must be some entries in the BIOS which controls that behavior but it makes it much harder to find it. It might be impossible without additional information.

Here's a comparison between the 290x uber BIOS and the 290x powersave BIOS.

Spoiler

0x00000028 could have something to do with voltage.

DEZ 1032 vs 979

 

What about comparing The Slit bios roms?

Link:- https://litecointalk.org/index.php?topic=12830.msg121827#msg121827

Link:- https://litecointalk.org/index.php?topic=12830.msg125148#msg125148

 

Can you please link to that forum thread?