fTPM - stable but abysmal performance

I've been struggling with an unstable system since building it (specs below)
I get kernel panics at least once a day.
I noticed CPU/RAM errors !only! when stress testing while changing settings (hz, resolution) of my screen. Benchmark values were always at the lower average.

So far I was only to reproduce this reliably on bazzite. no issues like that on windows.

yesterday I enabled AMD fTPM again (originally, I was recommended to switch it off for linux)
The system has been stable during tests since and there were no kernel panics so far.
Only multi-core performance dropped to abysmal levels. 5-30% of expected averages.
On Windows it looks relatively normal.

specs:

MB: NZXT N9 X870E
CPU:MD Ryzen 9 9950X3D 16-Core Processor
OS: Bazzite 42 (FROM Fedora Kinoite)" (64 bit)
GPU: AMD Radeon RX 9070 XT (2 separate power cords connected to the PSU)
RAM: DDR5-8200DIMM 48GB (running at 5600hz)
PSU: 1200W

MB: NZXT N9 X870E
CPU:MD Ryzen 9 9950X3D 16-Core Processor
OS: Bazzite 42 (FROM Fedora Kinoite)" (64 bit)
GPU: AMD Radeon RX 9070 XT (2 separate power cords connected to the PSU)
RAM: DDR5-8200DIMM 48GB (running at 5600hz)
PSU: 1200W

MB: NZXT N9 X870E
CPU:MD Ryzen 9 9950X3D 16-Core Processor
OS: Bazzite 42 (FROM Fedora Kinoite)" (64 bit)
GPU: AMD Radeon RX 9070 XT (2 separate power cords connected to the PSU)
RAM: DDR5-8200DIMM 48GB (running at 5600hz)
PSU: 1200W

MB: NZXT N9 X870E
CPU:MD Ryzen 9 9950X3D 16-Core Processor
OS: Bazzite 42 (FROM Fedora Kinoite)" (64 bit)
GPU: AMD Radeon RX 9070 XT (2 separate power cords connected to the PSU)
RAM: DDR5-8200DIMM 48GB (running at 5600hz)
PSU: 1200W

皇

皇家海星•9/20/25, 10:24 AM

ujust get-logsujust get-logs

皇

皇家海星•9/20/25, 10:24 AM

however occt should detect hardware errors during a stress test

皇

皇家海星•9/20/25, 10:25 AM

if it detects it, then the problem is probably hardware related

皇皇家海星 if it detects it, then the problem is probably hardware related

Shr0OP•9/20/25, 10:26 AM

Yea hardware, bios or driver I think.
Since this problem is only on bazzite, not on windows, its probably driver

皇

皇家海星•9/20/25, 10:26 AM

so performance is normal on windows's occt?

皇

皇家海星•9/20/25, 10:27 AM

with no errors?

皇皇家海星 so performance is normal on windows's occt?

Shr0OP•9/20/25, 10:27 AM

Yes performance benchmarks are at the average if I recall correctly. I'll test it again just to confirm

Shr0OP•9/20/25, 10:28 AM

no errors with fTPM enabled at least. I can switch fTPM off and test for errors again on windows.

Shr0OP•9/20/25, 10:28 AM

I read somewhere this might be a sign of a RNG problem with the BIOS and might need a patch from the manufacturer

皇

皇家海星•9/20/25, 10:29 AM

no, not really

皇

皇家海星•9/20/25, 10:29 AM

whether you have ftpm enabled or not does not affect error detection

皇皇家海星 whether you have ftpm enabled or not does not affect error detection

Shr0OP•9/20/25, 10:30 AM

its strange, I have 0 errors with fTPM, but 100% reproducable without fTPM. I have no explanation for this so far

皇

皇家海星•9/20/25, 10:31 AM

reproducible as in?
logs will be very useful if you provide them

Shr0OP•9/20/25, 10:32 AM

basically, I can produce errors If i disable fTPM, run OCCT stress test and change my display settings. It will show core erros or memory errors, depending on the test.

Shr0OP•9/20/25, 10:33 AM

https://paste.centos.org/view/c873d0fb
last boot.

Shr0OP•9/20/25, 10:35 AM

I always suspected its related to low power states somehow. It never crashed during gameplay, only occasionally whenn game loaded and fullscreen resolution changed.
it most reliably kernel panics when I just boot bazzite and wait for 1-2 hours. But I can game 5 hours straight, never crashes.

Shr0OP•9/20/25, 10:39 AM

nnevermind, I just selected a resolution my monitor doesn't support while running OCCT and I got CPU errors. so fTPM only makes it less reproduceable, but still happens (on bazzite). will test again on windows in a moment.

message.txt4.35KB

皇

皇家海星•9/20/25, 10:40 AM

you can try and use wine virtual desktop or gamescope(via scopebuddy) as a workaround

Shr0OP•9/20/25, 10:40 AM

logs from just now when the errors happend (12:37) https://paste.centos.org/view/04eb3978

皇

皇家海星•9/20/25, 10:41 AM

ok if you have pbo turned on, turn it off first

皇

皇家海星•9/20/25, 10:41 AM

and xmp

Shr0OP•9/20/25, 10:41 AM

ok will do 1sec

Shr0OP•9/20/25, 10:43 AM

Also it very often hangs during shutdown, making me force power off

Shr0OP•9/20/25, 10:45 AM

Hm can't find a BIOS setting called pbo or xmp

皇

皇家海星•9/20/25, 10:46 AM

amd overclocking -> precision boost overdrive -> disabled

皇

皇家海星•9/20/25, 10:46 AM

and something like D.O.C.P. -> disable

皇

皇家海星•9/20/25, 10:49 AM

also if you don't use wifi, try and find an option to disable the wifi card

Shr0OP•9/20/25, 10:49 AM

I guess gaming mode off and zen5 opt off?

Shr0OP•9/20/25, 10:49 AM

Found precision boost and disabled it

皇

皇家海星•9/20/25, 10:50 AM

there should be an option in advanced -> amd overclocking

皇

皇家海星•9/20/25, 10:50 AM

but if you found it it should be fine too

Shr0OP•9/20/25, 10:51 AM

Yep found the precision boost there. Still looking for docp

皇

皇家海星•9/20/25, 10:52 AM

for xmp/docp it is in overclocking -> dram profile configuration

Shr0OP•9/20/25, 10:52 AM

Disable avx512 as well? I think it's an I Tel thing right?

皇

皇家海星•9/20/25, 10:52 AM

nah that is fine

Shr0OP•9/20/25, 10:52 AM

Shr0OP•9/20/25, 10:53 AM

This also ok?

rn_image_picker_lib_temp_5ae0a2f7-e1aa-4be5-85fe-562439c9a69e.jpg

皇

皇家海星•9/20/25, 10:54 AM

yep

皇

皇家海星•9/20/25, 10:54 AM

you can test it in windows and/or bazzite to see if the issue is hardware related

皇

皇家海星•9/20/25, 10:55 AM

wait a minute

皇

皇家海星•9/20/25, 10:55 AM

you said your cpu is a 9950x3d?

Shr0OP•9/20/25, 10:55 AM

Yea

SShr0 I guess gaming mode off and zen5 opt off?

皇

皇家海星•9/20/25, 10:56 AM

disable gaming mode here

皇皇家海星 disable gaming mode here

Shr0OP•9/20/25, 10:56 AM

Done.

Shr0OP•9/20/25, 10:57 AM

From auto to first value I guess?

rn_image_picker_lib_temp_83625423-4223-4e15-933a-3ab7eda2962c.jpg

皇

皇家海星•9/20/25, 10:57 AM

test with ddr5 5600 first

Shr0OP•9/20/25, 10:58 AM

Ok will boot back to bazzite now

SShr0 This also ok?

Shr0OP•9/20/25, 11:01 AM

huh. I wonder why it says 8 cores. Afaik this processor should have 16 cores and 32 threads

Shr0OP•9/20/25, 11:07 AM

damn. CPU errors again when changing screen resolution.

00:00:00 - Info - Test schedule started at 2025-09-20 13:05:48
00:00:00 - Info - CPU + RAM - Initializing (Duration : 01:00:00)
00:00:00 - Info - CPU + RAM - Started (Duration : 01:00:00)
00:00:34 - Error - CPU + RAM - 1 error(s) found on physical core #31 - logical core #31
00:00:35 - Error - CPU + RAM - 2 error(s) found on physical core #31 - logical core #31
00:00:35 - Error - CPU + RAM - 3 error(s) found on physical core #31 - logical core #31
00:00:36 - Error - CPU + RAM - 2 error(s) found on physical core #31 - logical core #31
00:00:36 - Error - CPU + RAM - 1 error(s) found on physical core #31 - logical core #31
00:00:37 - Error - CPU + RAM - 2 error(s) found on physical core #31 - logical core #31
00:00:37 - Error - CPU + RAM - 1 error(s) found on physical core #31 - logical core #31
00:00:38 - Error - CPU + RAM - 3 error(s) found on physical core #31 - logical core #31

00:00:00 - Info - Test schedule started at 2025-09-20 13:05:48
00:00:00 - Info - CPU + RAM - Initializing (Duration : 01:00:00)
00:00:00 - Info - CPU + RAM - Started (Duration : 01:00:00)
00:00:34 - Error - CPU + RAM - 1 error(s) found on physical core #31 - logical core #31
00:00:35 - Error - CPU + RAM - 2 error(s) found on physical core #31 - logical core #31
00:00:35 - Error - CPU + RAM - 3 error(s) found on physical core #31 - logical core #31
00:00:36 - Error - CPU + RAM - 2 error(s) found on physical core #31 - logical core #31
00:00:36 - Error - CPU + RAM - 1 error(s) found on physical core #31 - logical core #31
00:00:37 - Error - CPU + RAM - 2 error(s) found on physical core #31 - logical core #31
00:00:37 - Error - CPU + RAM - 1 error(s) found on physical core #31 - logical core #31
00:00:38 - Error - CPU + RAM - 3 error(s) found on physical core #31 - logical core #31

Shr0OP•9/20/25, 11:08 AM

annd the errors will continue after that. as if it permanently breaks something after changing screen settings

00:00:00 - Info - Test schedule started at 2025-09-20 13:05:48 00:00:00 - Info - CPU + RAM - Initializing (Duration : 01:00:00) 00:00:00 - Info - CPU + RAM - Started (Duration : 01:00:00) 00:00:34 - Error - CPU + RAM - 1 error(s) found on physical core #31 - logical core #31 00:00:35 - Error - CPU + RAM - 2 error(s) found on physical core #31 - logical core #31 00:00:35 - Error - CPU + RAM - 3 error(s) found on physical core #31 - logical core #31 00:00:36 - Error - CPU + RAM - 2 error(s) found on physical core #31 - logical core #31 00:00:36 - Error - CPU + RAM - 1 error(s) found on physical core #31 - logical core #31 00:00:37 - Error - CPU + RAM - 2 error(s) found on physical core #31 - logical core #31 00:00:37 - Error - CPU + RAM - 1 error(s) found on physical core #31 - logical core #31 00:00:38 - Error - CPU + RAM - 3 error(s) found on physical core #31 - logical core #31

fTPM - stable but abysmal performance

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