X370 Taichi Crossfire Issue

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   Maybe check the settings related to the PCIe slots and Crossfire in the BIOS? Are you trying to force the PCIe slot to 16x? (In Crossfire, the slots can only run in 8x mode).
I think I have it all set to Auto. My Crossfire is working fine, btw, Taichi MoBo.
Do you have the single ribbon bridge installed between your GPU's? You didn't install the SLI bridge that came with the Motherboard, right?
Do you have your monitors both plugged into the GPU installed in the PCIE2 slot?
Power connections to the GPU?

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JoJoDaClown Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 10 Mar 2017 Status: Offline Points: 14	Post Options Post Reply Quote JoJoDaClown Report Post Thanks(1) Quote Reply Posted: 11 Apr 2017 at 3:11am
	Maybe check the settings related to the PCIe slots and Crossfire in the BIOS? Are you trying to force the PCIe slot to 16x? (In Crossfire, the slots can only run in 8x mode). I think I have it all set to Auto. My Crossfire is working fine, btw, Taichi MoBo. Do you have the single ribbon bridge installed between your GPU's? You didn't install the SLI bridge that came with the Motherboard, right? Do you have your monitors both plugged into the GPU installed in the PCIE2 slot? Power connections to the GPU?
	Ryzen 1800X ASRock X370 Taichi GSkill TridentZ CL14 3200

TooQik Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 06 Apr 2017 Location: Australia Status: Offline Points: 104	Post Options Post Reply Quote TooQik Report Post Thanks(0) Quote Reply Posted: 09 Apr 2017 at 2:03pm
	Some more test results, I installed both GPUs back into my old PC which runs an FX8350 on a Asus Crosshair V Formula motherboard with Windows 10 64 bit - crossfire works perfectly no matter which version of Radeon software I try and I experience no issues with crossfire disabling itself between PC reboots. Putting the GPUs back into the Ryzen 1700 system again results in blue screens and crossfire disabled. Running a single GPU works fine. Again, the blue screens have only appeared after the BIOS update to 2.0 so the BIOS is definitely affecting the system in some way, which points to the problem potentially being motherboard related. Would love to hear from anyone else running crossfire on their Asrock X370 Taichi regardless if you have it working or not, as it may help me determine where my problem lies.

TooQik Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 06 Apr 2017 Location: Australia Status: Offline Points: 104	Post Options Post Reply Quote TooQik Report Post Thanks(0) Quote Reply Posted: 07 Apr 2017 at 11:39am
	I've been doing some more testing with the following results: Radeon software version 17.4.1 installed - issue remains. Latest 2.0 BIOS - issue remains. I have noticed that crossfire doesn't disable when performing a cold boot, it only appears to disable on every other warm boot. It's also worth mentioning that since updating to the 2.0 BIOS every second warm boot also results in booting to a blue screen with the mouse pointer where you would normally login to Windows; power cycling the PC resolves the issue.

TooQik Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 06 Apr 2017 Location: Australia Status: Offline Points: 104	Post Options Post Reply Quote TooQik Report Post Thanks(0) Quote Reply Posted: 06 Apr 2017 at 10:10pm
	I've recently purchased the X370 Taichi and am having an issue getting crossfire working consistently with a pair of R9 280x GPUs. I'm currently running Windows 10 Pro 64 bit, BIOS version 1.60, all motherboard settings are default and Radeon software version 16.12.2. On initial assembly of the PC I was able to install the AMD GPU drivers and enable crossfire successfully. After a reboot I noticed crossfire was no longer enabled. Opening up Radeon settings shows the second GPU as disabled and there is no option to enable crossfire. If I reboot the PC the enable crossfire setting becomes available and I'm once again able to configure and run crossfire successfully. After enabling crossfire again it will only stay enabled for another one or two reboots before the cycle starts again. I've noticed two things that indicate that crossfire has been disabled again when I boot into Windows; If the network connection icon show no connection on the login screen or if the speakers icon shows the audio service is not running after logging in. The R9 280x GPUs do work without issue on another PC with Windows 7 Pro 64 bit and the same (or later) Radeon software version. I'm not sure whether this issue is a motherboard issue or not, hence why I writing here to see if anyone else is experiencing a similar problem or knows of a solution. Thanks in advance. Edited by TooQik - 06 Apr 2017 at 10:11pm