** Changed in: intel
Status: New => Fix Released
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https://bugs.launchpad.net/bugs/1596469
Title:
[Bug]tpm initialization fails on x86
Status in intel:
Fix Released
Status in linux package in Ubuntu:
Fix Released
Status in linux source package in Xenial:
Fix Released
Bug description:
When trying to test TPM with Ubuntu 16.04 on Intel x86_64 platform, there's
tpm initialization failure found in kernel log:
root@SKLU1-leg:~# dmesg | grep -i tpm
[ 0.000000] ACPI: SSDT 0x000000007FFE4000 0004D6 (v02 Intel_ Tpm2Tabl
00001000 INTL 20141107)
[ 0.000000] ACPI: TPM2 0x000000007FFE2000 000034 (v03
00000000 00000000)
[ 2.532245] ima: No TPM chip found, activating TPM-bypass!
[ 3.489431] tpm_crb MSFT0101:00: can't request region for resource [mem
0xfed40040-0xfed4103f]
[ 3.489437] tpm_crb: probe of MSFT0101:00 failed with error -16
which leads to tpm device missing under /dev:
root@SKLU1-leg:~# ls -l /dev/tpm*
ls: cannot access '/dev/tpm*': No such file or directory
This error has been fixed with patch below, but not yet merged to upstream
kernel:
http://git.infradead.org/users/jjs/linux-tpmdd.git/commit/0af6e0a2da2e4fedaa2743333da438d3b879192b
Patch 0af6e0a has dependency to this patch:
http://git.infradead.org/users/jjs/linux-tpmdd.git/commit/3f944075e75e28c9cf1af8f82798398b
So 0af6e0a has to be applied upon 3f94407, otherwise patch apply fails.
I've verified with kernel 4.7-rc4 that above 2 patches can fix this TPM issue.
So please Ubuntu team help on backporting these 2 patches into the kernel of
their next release.
PS, below are some information about Ubuntu & kernel & cpu info on my test
server, for your reference:
root@SKLU1-leg:~# lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description: Ubuntu 16.04 LTS
Release: 16.04
Codename: xenial
root@SKLU1-leg:~# uname -a
Linux SKLU1-leg 4.4.0-21-generic #37-Ubuntu SMP Mon Apr 18 18:33:37 UTC 2016
x86_64 x86_64 x86_64 GNU/Linux
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