NUK SKL-H BIOS version 0045 and later should fix this issue. https://downloadcenter.intel.com/download/26698/NUCs-BIOS-Update-KYSKLi70-86A-
Thanks Tomas -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. 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 To manage notifications about this bug go to: https://bugs.launchpad.net/intel/+bug/1596469/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
