AMD fTPM with linux 4.15
Printed From: ASRock.com
Category: Technical Support
Forum Name: AMD Motherboards
Forum Description: Question about ASRock AMD motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=10594
Printed Date: 27 Jul 2025 at 8:39pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: AMD fTPM with linux 4.15
Posted By: killerkelv
Subject: AMD fTPM with linux 4.15
Date Posted: 03 Jan 2019 at 3:40am
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With fTPM enabled in the UEFI my kernel boots fine but doesn't load a /dev/tpm device node as expected. Searching the kernel logs I find the following... $ dmesg | grep -i tpm [ 0.000000] ACPI: TPM2 0x000000007902E4D0 000034 (v04 AMD A M I 00000001 AMI 00000000) [ 0.928120] tpm_crb MSFT0101:00: can't request region for resource [mem 0x7943a000-0x7943afff] [ 0.928141] tpm_crb: probe of MSFT0101:00 failed with error -16 [ 1.090180] ima: No TPM chip found, activating TPM-bypass! (rc=-19) Searching based on this output leads to lots of bugs with older kernels all of which were addressed via a UEFI/BIOS update rather than a kernel patch. Is this on ASRock's todo list does anyone know and/or has anyone found a fix or workaround to enabling and using the integrated TPM capabilities? |
Replies:
Posted By: killerkelv
Date Posted: 03 Jan 2019 at 3:41am
| Sorry I should have included in the above but I'm using Ubuntu 18.04 running Ubuntu's stock kernel 4.15. |
Posted By: Isoceles
Date Posted: 04 Jan 2019 at 3:53am
| Do you happen to have the "Fast Boot" option enabled in the UEFI firmware menu? |
Posted By: killerkelv
Date Posted: 04 Jan 2019 at 4:03am
No, purposefully not, I leave the system running 24/7 so reboots aren't an issue. |
Isoceles wrote:Posted By: chithanh
Date Posted: 09 Apr 2019 at 7:43am
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FWIW, I saw the same problem on ASRock AB350M and reported it to ASRock support, they replied and told me to use Windows. The issue still exists with kernel 5.0, and is due to buggy BIOS/UEFI from what I can tell. |