El 20/06/11 14:32, Corbin Simpson escribió:
On Sun, Jun 19, 2011 at 1:03 PM, Dario Napole<[email protected]> wrote:
hi, and sorry for asking here, i'm not sure this is the right place but it
was the only one that i know that has highly experienced programers and that
also reverse engineer drivers. (btw first time using a mailing list so sorry
if i missed something)
I'm just going the ask if anyone has some free time and would like to give
it a try and help BAGZZlash at Tech Power Up, because nor i nor him does
know enought to do it.
The problem is that RBE is able to edit the bios, but AMD introduced some
kind of signature check for the HD 6000 series bios and if it doesn't match
it rolls back the configuration to the original ones. This is bothersome
because you can't even change the fan curve if you dont like your 6950
working at 90ºC just to keep it quite (the VRM can even reach 110ºC) .
This can also be quite usefull if you use the gpu for extensive tasks with
openGL, which as the fan curve is prepared for "gaming", could very much end
up burning the card as would happen with furmark if you dont set the fan at
100%.
If anyone could reverse enginering the algoritm so he can add it to RBE, i
would be very gratefull
sorry if this wasn't the right place to ask for help
the topic in the forum is this one (i'm laharl2k)
http://www.techpowerup.com/forums/showthread.php?t=147647
thanks in advance for any help you could give him
We don't encourage or support flashing video BIOS. The Coreboot team
has tools for modifying Radeon BIOS which might be useful, although I
don't know if they support HD 6xxx cards yet.
As an aside, I'm relatively sure that Furmark cheats somehow; I
emailed the author a while back asking about it and received no
response. I noticed that Furmark somehow convinces cards to change
their fan speeds.
about that tool, i searched a little and found testbios (for programing
video bioses) but the problem wasn't about modifying the vga bios, the
problem lies in the driver (catalyst/fglrx), when it loads if the bios
signature doesn't match with the rest of the vga bios then the driver
sets the card to the default settings.
Let's say you edit the bios to keep the fan at 100%, u flash it, and
restart. At first it works fine, the fan stays at 100% until fglrx
loads, the it backs to the original curve. The same with catalyst.
And with the furmark thing, i haven't had any problem like that, with
neither my HD4670 nor my HD6950, you should check the fan curve with rbe
and see if it does what it says with furmark, mines always did what they
said in the bios.
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