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Asrock X58 SuperComputer anti-spectre microcode and vt-d upgrade
#11
Try to flash my mod and make new screenshot of regedit with expanded key HKEY_LOCAL_MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0 with disabled VT-d.
Then try to enable it.
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quote
#12
What modification have you done? And how?
I can't even find the AMIPCB to edit the bios myself...
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#13
https://www.delidded.com/how-to-update-c...-ami-bios/
I've updated microcode only.
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quote
#14
Thank you.
So you upgraded just the microcode.
Where did you get it?
Anyway I'm going to try it now.
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quote
#15
Ok, about Spectre fix: success!
I downloaded and launched InSpectre release #8 utility/tool and with the original Bios the button "Enable Spectre Protection" was greyed out so unavailable, with your bios was available, I clicked on it, rebooted and this are the results (also checked with SpectreMeltdownCheck), also checked under Windows 10.

About vt-d with Windows 10, no success, it gets stuck at the windows blu logo bootscreen if vt-d is enabled...
We should figure out where the fix is located in the Asus Sabertooth X58 BIOS and dump it, to add to the Asrock Bios...


Attached Files Thumbnail(s)
       
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quote
#16
Geez, I just found that there were already patched bioses for my motherboard: http://forum.asrock.com/forum_posts.asp?TID=9239&title=spectre-patched-bios-for-asrock-x58-motherboards
Thank you very much anyway for your effort...
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#17
So, there's no hope to get the vt-d fix on the bios?
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#18
(09-20-2018, 05:26 PM)Ranmamez Wrote: So, there's no hope to get the vt-d fix on the bios?
The search for a reason is very complicated.
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#19
Hi.
I found that the x58 chipset had issues with the VT-D enabled, when used with some virtualization software under linux or other unix based OS.
The problem seems to lie in a broken RMRR or DMAR table (that I don't know what is it, apart of being some address translation table).
So I thought that maybe it is the same issue that make Windows 10 64b 1803 and later freeze at booting if the vt-d is enabled.
I found that there is this thread but also this other one where it seems that TheWiz fixed the issue for that pre-built computer.
So I wanted to ask if he could do the magic again for other X58 motherboards, or at least show us what he did at that time and what software/tools he used to achieve that goal.
Anyway my latest bios, also spectre/meltdown patched, is here: http://www.mediafire.com/file/wke9sob2l3...D.zip/file
Thank in advance.
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