ASRock Forums : x399 taichi multiple issues w/ videos https://forum.asrock.com/ Copyright (c) 2006-2013 Web Wiz Forums - All Rights Reserved. Mon, 20 Apr 2026 19:09:49 +0000 Sun, 16 Sep 2018 12:33:06 +0000 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 12.04 360 https://forum.asrock.com/RSS_post_feed.asp?TID=9698 <![CDATA[ASRock Forums]]> https://forum.asrock.com/forum_images/web_wiz_forums_black.png https://forum.asrock.com/ <![CDATA[x399 taichi multiple issues w/ videos : from HD screens only 1920x1080...]]> https://forum.asrock.com/forum_posts.asp?TID=9698&PID=56209&title=x399-taichi-multiple-issues-w-videos#56209 Author: kerberos_20
Subject: 9698
Posted: 16 Sep 2018 at 12:33pm

from HD screens only 1920x1080 is supported, if your GPU detects your screen as full HD capable
so if u dont get 1920x1080, than your GPU doesnt read EDID
]]> Sun, 16 Sep 2018 12:33:06 +0000 https://forum.asrock.com/forum_posts.asp?TID=9698&PID=56209&title=x399-taichi-multiple-issues-w-videos#56209 <![CDATA[x399 taichi multiple issues w/ videos : revision for the saving profile...]]> https://forum.asrock.com/forum_posts.asp?TID=9698&PID=56207&title=x399-taichi-multiple-issues-w-videos#56207 Author: ssateneth
Subject: 9698
Posted: 16 Sep 2018 at 10:57am

revision for the saving profile black screen. it turns out if you disable CSM, this is the cause of black screen on loading saved profile settings. since i found the root cause, i can avoid it for now and saved settings works with the workaround. see video here

as far as "decode above 4g" issue, the only devices added to the system are samsung 950 pro nvme ssd, samsung 850 pro sata ssd, and geforce gtx 1080 ti which has a gop driver (otherwise it wouldnt post with secure boot on). like i said in the video, the decode above 4g issue only comes up if secure boot is not enabled too. if you enable it manually, it works fine. the fix would be to force secure boot on if decode above 4g is enabled.

also secure boot on = csm automaticlaly disabled anyways, especially if decode above 4g enabled (there is no more csm), so the fault still exists for hd resolution not working on hd monitor and hd capable  graphics card


Edited by ssateneth - 16 Sep 2018 at 11:06am]]> Sun, 16 Sep 2018 10:57:09 +0000 https://forum.asrock.com/forum_posts.asp?TID=9698&PID=56207&title=x399-taichi-multiple-issues-w-videos#56207 <![CDATA[x399 taichi multiple issues w/ videos : to use 64bit (&gt;4G) adressing...]]> https://forum.asrock.com/forum_posts.asp?TID=9698&PID=56206&title=x399-taichi-multiple-issues-w-videos#56206 Author: kerberos_20
Subject: 9698
Posted: 16 Sep 2018 at 10:37am

to use 64bit (>4G) adressing space, all your hardware (add-in cards) has to be in UEFI compatible
if u using some legacy hardware which doesnt have uefi compatible rom/bios, it will fail with b2 post code

for resolution higher than 1024x768 u will need to disable CSM, so bios wont load int10h driver (legacy vga), but will use gop driver from your gpu bios
but for CSM to be disabled, again...all your hardware (add-in cards) has be to UEFI compatible


saving bios profiles was never working on any recent asrock boards...kinda sad


Edited by kerberos_20 - 16 Sep 2018 at 10:37am]]> Sun, 16 Sep 2018 10:37:21 +0000 https://forum.asrock.com/forum_posts.asp?TID=9698&PID=56206&title=x399-taichi-multiple-issues-w-videos#56206 <![CDATA[x399 taichi multiple issues w/ videos : Configuration is Asrock taichi...]]> https://forum.asrock.com/forum_posts.asp?TID=9698&PID=56205&title=x399-taichi-multiple-issues-w-videos#56205 Author: ssateneth
Subject: 9698
Posted: 16 Sep 2018 at 9:40am

Configuration is Asrock taichi x399, BIOS L3.32, Ryzen Threadripper 2950X, GSKILL F4-3600C17Q-64GTZKW (4 x 16GB samsung b-die, XMP rated to 3600MHz 17-19-19-39 2T), EVGA GeForce GTX 1080 Ti FTW3, Samsung Pro 950 512GB NVME SSD, Samsung Pro 850 2TB SATA SSD, ASUS MG279Q Monitor (27" 2560x1440 144hz Freesync model, IPS panel)

The Fail Count setting has been fixed on BIOS L3.32 so that is good.

I am unable to create a video about UEFI resolution stuck at 1024 x 768. For me, it may be a hardware configuration incompatibility as loading UEFI defaults still results in 1024 x 768. The only options for the UEFI HD resolution is "Auto" and "Disabled".


Odd CAS timing with geardown mode (GDM) disabled (Command rate 1T or 2T does not matter) with RAM speeds 2933 or higher cause NO POST at POST code 15. RAM tests known good at CAS latency 16 and 18, but no POST at CAS 17. I already know GDM on with odd CAS latency automatically rounds odd CAS timing up to the next even CAS timing (17 -> 18) Here is video documenting the issue 

RAM Speed 2866 GDM on, tests good CAS 16, 17, 18. GDM off, tests good CAS 16, 17, 18 @ command rate 1T and 2T

RAM Speed 2933 and 3200 GDM on, tests good CAS 16, 17, 18. GDM off, tests good CAS 16, 18 @ command rate 1T and 2T. POST FAIL at CAS 17 with either command rate 1T or 2T



Loading saved UEFI settings is still an issue on BIOS L3.32. Screen goes black and computer becomes unresponsive except caps/scroll/num lock keys and ctrl + alt + del to restart. It is an intermittent issue and hard to reproduce consistently. I have made a video with my experience. Here is video link of my experience  as well as steps I did to reproduce.

Load UEFI defaults and save profile 1 as "UEFI Defaults" and restart

Go back into UEFI and change settings as follow

Boot tab > Setup Prompt timeout > 10 | boot beep > On | full screen logo > Disabled | Above 4g decoding > enabled

Security tab > secure boot > enabled

h/w monitor > cpu fan 1 setting > customize >monitor m/b >  numbers from top to bottom for cpu fan 1 : 50, 55, 60, 55, 60, 55, 75, 80, 80

advanced > southbridge configuration > wan radio > disabled | bt on/off > disabled

advanced > storage configuration > sata hot plug > disabled

advanced > amd cbs > DF common options > memory interleaving > channel

advanced > active page on entry > OC tweaker

Save user default > select profile 2 > name it "test"

save settings and restart

go back into UEFI > load user default > select UEFI defaults > results in black screen. sometimes it comes back, other times it stays black screen unresponsive.


also there is another issue. setting "Above 4G decoding" causes POST hang on code B2 and beep code 1, pause, 3 beeps, 3 beeps, unless secure boot is manually set to enabled as well. requires cmos reset to restore working state. see video here.

I have not had the time to test Rtt resistance settings, and software tools used to read that setting have not yet been updated to be compatible with the 3.xx series of BIOS/UEFI.

I have not yet re-tested P-state overclocks, partly due to new second generation threadripper and precision boost overdrive replacing p-state overclock for me.



Edited by ssateneth - 16 Sep 2018 at 11:05am]]> Sun, 16 Sep 2018 09:40:55 +0000 https://forum.asrock.com/forum_posts.asp?TID=9698&PID=56205&title=x399-taichi-multiple-issues-w-videos#56205