List of working motherboards #11
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Huananzhi X99-TF Registry editing is required to allow drivers to enable the ReBar.
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Would my Z97-Pro be considered working? I haven't tried the 16GB patch (only tested to 8GB), but it needs the replacement of the older 1204 NvramSmi module and the PciBus UEFIPatch to work. The GPU tested is the Intel Arc A380 (will test the A770 once I get a replacement power supply). |
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@Tokobotenkai anything 4GB or higher is considered working but if you find a larger size doesn't I can add a note |
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Hi, i have z270 m7 with 7700k. my motherboard has 4G decoding in bios. i also have gtx 1080. how to patch my bios? |
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@EDK-Rise GTX 1080 doesn't support resizable bar |
@sidex15 But can you actually check what a name of this board?, im trying figure out how to patch mine X79, checking whats the difference between them, maybe i will find something. Or even better, save a bios file, and upload here. |
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@aquamacho1 I just followed the X99 guide from Miyconst and use Enabling hidden 4G decoding... |
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@sidex15 This is awesome, thx. I will just buy this mobo then :), im just kidding. |
Add to note that macOS(Hackintosh) didn't boot after enabling Rebar.. |
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@sidex15 I think macOS doesn't support large BARs not a problem with the bios or anything |
Yeah i'm using opencore 0.8.3 even with resizeapplegpubars set to 0 won't even boot to macOS... |
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ASUS Z170-WS & Intel ARC A770, BAR size set to unlimited and the full 16GB worked Also works on a ASUS Z170 Sabertooth MK1 |
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MZ32-AR0 (rev. 1.0) +ARC A380 +TESLA M40
(A380 has a 43 code after installing any driver later than 31.0.101.3277 on my platform. I don't know why Tesla M40 has "large memory range" by default. Does that mean there is a white list inside the bios for some rebar cards? ) After inserting ReBarDxe.ffs and running ReBarState.exe BAR size set to unlimited :
(A380 works with the latest driver after doing these. A small issue i found is that Intel® Arc™ Control refuse to start. ) |
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@gyhmz Tesla M40 doesn't have ReBar it just has a large BAR by default. |
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I can confirm it works on a Supermicro H11DSi-NT (tested with bios v1.3, should work with the v2.4 as well). Tested with a 4090 FE. No patches needed, 256GB ram installed. Thanks a lot for making this tool.
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@Tokobotenkai Hey! Do you mind sharing modified bios for z97-pro, please? |
There you go: https://drive.google.com/file/d/1yZb9LkaTvvBjAkJfGSO-hPgm2L_W9SWH/view?usp=sharing I have random issues where my keyboard and mouse is not detected on boot, not sure if it is a dying USB or a BIOS issue though. |
@Tokobotenkai I have them on my Hero too. Funny enough they only occur after setting rebar state value. |
I suspect it is some device being mapped in the same error, but the error is intermittent. I workaround it by using a PS2 keyboard. |
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@Tokobotenkai Thank you! If I'm going flash bios with programmer CH341A so I'll need to uncapsule bios into ROM format, right? |
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@supermanz87 you have to use UEFIPatch. it's described in the README how to use it |
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Asus Z170-P D3 : requires patch "Don't downgrade 64-bit BARs to 32-bit (by @Mak3rde)" |
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@xCuri0 I found this:
Vit9696's code allows for nvramsmi to write on UEFI for Z97's Asus motherboards like my Maximus VII hero. Already tested it, and it works. Saved me from extracting nvramsmi from 1104 and replacing it on 3503. |
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Motherboard: ASRock Z170_pro4s |
Hello Can Someone help me to activate rebar on my computer ? I really don't know how it works to modify the bios iso. The closer computer from mine is the one just over there M710s, i have a M910s (and the same graphic card a380). Thanks for your help @Tectrek |
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Motherboard: Acer IPIMB-AR https://github.com/Ian275/IPIMB-AR_UEFI After restarting, the motherboard sometimes gets stuck after the POST with no display output. |
Hi, Do you mind sharing modified bios for Asus Z97-A, please? if you have time ill appreciate that you can use one of those: original one or updated one in ROM format (choose the one will worked better) https://winraid.level1techs.com/t/offer-asus-z97-a-updated-bios/32089/13 |
Hi @Tectrek . How did you enable Coffee Lake and Coffee Lake Refresh? I am wroking on an M920Q and Using an I7 8700 with intel chipset 300 series and Intel Arc 380. Got 4g Decode working and some games seem to go up to 5 Gig VRAM usage, but My scenario is for AV1 encoding and ReBar is mandatory in that instance. Thanks. |
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Motherboard: AsRock Z97 Extreme6 CPU is i7-4790K - Devil's Canyon. I used the Haswell instructions. DSDT had to be cut down a lot to work, I just barely got it small enough to squeak by. SLI is disabled as a result. I used the modified BIOS from Lost-n-BIOS on Winraid for this mobo as a starting point to expose Above 4g Decoding in the UEFI menu before installing ReBar. Prior to patching and using ReBar, the GPU would error out on code 12 without fail, independent of any drivers, and cause frequent system freezes and crashes whenever installed. My BIOS, Lost-n-BIOS' original BIOS, and my modified DSDT's are available here, to make this easier for anyone else on this same board: https://github.com/wakawaka888/Z97EXTREME6-unlocked_BIOS Photos:
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created account to say thanks!!! also
Confirmed 2gb working -edit- to add screenshots |
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hi, but just out of curiosity, how much should I set rebar size with an RX5600XT 6gb? now is set to 8gb and it seems to work fine, should I set it to 4gb? another size? thank you |
Notes:
Screenshots: |
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Please, could someone answer me? What is the oldest motherboard that this method worked with? |
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@DADA30000 Probably some Sandy Bridge H61 board. The problem is motherboards before Sandy Bridge supporting UEFI are rare. I've heard of some people getting it working on Core 2 Duo and X58 systems through unconventional methods (not BIOS modification) using Linux too. |
Oh, OK, thanks! |
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You are looking for BootDiskUtility https://cvad-mac.narod.ru/index/bootdiskutility_exe/0-5 |
I have UEFI, so no need for that, but thanks :D |
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Motherboard: Asus Strix x399e Gaming
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Motherboard: MSI Z270 GAMING M3
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Motherboard: Supermicro X11DPH-T ouankou@carina:~$ sudo lspci -v -s b1:00.0
b1:00.0 VGA compatible controller: Intel Corporation DG2 [Arc A770] (rev 08) (prog-if 00 [VGA controller])
Subsystem: Intel Corporation DG2 [Arc A770]
Flags: bus master, fast devsel, latency 0, IRQ 349, NUMA node 1, IOMMU group 11
Memory at ed000000 (64-bit, non-prefetchable) [size=16M]
Memory at 39b800000000 (64-bit, prefetchable) [size=16G]
Expansion ROM at ee000000 [disabled] [size=2M]
Capabilities: [40] Vendor Specific Information: Len=0c <?>
Capabilities: [70] Express Endpoint, MSI 00
Capabilities: [ac] MSI: Enable+ Count=1/1 Maskable+ 64bit+
Capabilities: [d0] Power Management version 3
Capabilities: [100] Alternative Routing-ID Interpretation (ARI)
Capabilities: [420] Physical Resizable BAR
Capabilities: [400] Latency Tolerance Reporting
Kernel driver in use: i915
Kernel modules: xe, i915
Platform: Intel(R) OpenCL Graphics
Device: Intel(R) Arc(TM) A770 Graphics
Driver version : 24.39.31294 (Linux x64)
Compute units : 512
Clock frequency : 2400 MHz
Global memory bandwidth (GBPS)
float : 399.99
float2 : 405.33
float4 : 407.92
float8 : 413.15
float16 : 418.83
Single-precision compute (GFLOPS)
float : 13025.36
float2 : 11131.94
float4 : 10409.40
float8 : 10031.56
float16 : 9714.22
Half-precision compute (GFLOPS)
half : 19570.46
half2 : 19506.91
half4 : 19537.16
half8 : 19443.04
half16 : 19324.51
No double precision support! Skipped
Integer compute (GIOPS)
int : 5464.12
int2 : 5458.35
int4 : 5438.78
int8 : 5414.71
int16 : 5398.20
Integer compute Fast 24bit (GIOPS)
int : 5459.08
int2 : 5455.56
int4 : 5439.77
int8 : 5411.69
int16 : 5385.23
Transfer bandwidth (GBPS)
enqueueWriteBuffer : 9.20
enqueueReadBuffer : 8.29
enqueueWriteBuffer non-blocking : 9.72
enqueueReadBuffer non-blocking : 8.72
enqueueMapBuffer(for read) : 9.24
memcpy from mapped ptr : 5.55
enqueueUnmap(after write) : 8.66
memcpy to mapped ptr : 5.56
Kernel launch latency : 8.66 us
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Motherboard: ASUS P8Z77-V LE
Now they are both the same size and aligned.
Summary: Using |
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Motherboard: Asus PRIME B250M-A with Kaby Lake CPU |
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Motherboard: Dell Precision T7810 (E5-26xx v3/v4, C612) 
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Motherboard: MSI Z97 PC Mate (7850) Needed MMTool for module insertion otherwise will result in bios corruption during flash (very scary). Also needed procedure to enable "Above 4G Decode" because is hidden. Bios version 4.11 (4B - Last). UEFIPatch didn't create pad corruption. During flashing procedure screen bacame black with -no sign of life- but after a couple of minutes system reboot safety. I set 8GB bar |
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Motherboard: AsRock H110M-DGS R3.0 |
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Motherboard: ASUS P8Z68-V LX |
and others
Motherboards which don't support at least 2GB BAR size are considered not working.
If you're having any issues please see Common issues (and fixes) before replying.
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