On 04/06/17 08:18, Paul Menzel wrote: > Dear Maciej, > > On 2017-04-05 13:03, Maciej S. Szmigiero wrote: > >>> tpm tpm0: Unable to read burstcount >>> tpm tpm0: tpm_transmit: tpm_send: error -16 >>> tpm_tis tpm_tis: Could not get TPM timeouts and durations >> >> This looks like a regression I had on ThinkPad X61S. >> >> You can try with a patch from the following commit >> which fixed it for me: >> https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=1d70fe9d9c3a4c627f9757cbba5d628687b121c1 >> >> It is included in mainline kernel 4.10.2. > > Indeed, that improves the situation. I still need to pass `force=1` to the > module to get `/dev/tpm0`. No idea, why it’s not in included in Linux 4.9 yet. > > ``` > $ more /proc/version > Linux version 4.11.0-rc5+ (root@d44d03a193d6) (gcc version 6.3.0 20170321 > (Debian 6.3.0-10) ) #2 SMP Tue Apr 4 21:07:08 UTC 2017 > $ journalctl -k -o cat | grep tpm > tpm_tis tpm_tis: 1.2 TPM (device-id 0x3202, rev-id 5) > tpm tpm0: Issuing TPM_STARTUP > tpm tpm0: [Hardware Error]: Adjusting reported timeouts: A 10000->10000us B > 10000->10000us C 0->752000us D 0->752000us > $ more /sys/class/tpm/tpm0/device/caps > Manufacturer: 0x41544d4c > TCG version: 1.2 > Firmware version: 11.5 > $ sudo tpm_version > Tspi_Context_Connect failed: 0x00003011 - layer=tsp, code=0011 (17), > Communication failure > ``` > > So do you have an idea, what “ACPI requirements” changed in the `tpm` module > since Linux 3.16 to be loaded automatically?
Unfortunately I can't help here as I am just a normal TPM user who happened to hit and fix that timeouts regression, but maybe others on ML will know something more about it. > Kind regards, > > Paul Best regards, Maciej
