[TrouSerS-users] problem with TPM connection - error 0x00003011

[antonio ascrizzi]

Hi,

I am pretty new to the field...
Starting from the following sample code I am trying to get *connected to
the TPM *after generating a Context:

[...]
*# result = Tspi_Context_Create(&hContext);*


*# result = Tspi_Context_Connect(hContext, NULL);*

The second call gives me: "Connection failure" with error *0x00003011.*

From the Bios TPM is enabled and active (I rebooted the board many times).

Do you have any idea?

Thank you very much

aa

[Tadd Seiff]

Hi aa,

A few details that might help:
1) what platform are you on? (PC make/model, chipset/motherboard...)
2) In what OS are you developing?
In Ubuntu I would check the following:
Is the TPM device present: # ls /dev/tpm* (tpm0 should be there)
If so, does it have an EK: # cat /sys/class/misc/tpm0/device/pubek
3) You didn't mention if you OWN the TPM (Take_Ownership command), which is
a logical next step after enabling it, BUT, afaik, you should still be able
to get a context so this shouldn't cause this error.

Also, the TCSD (that's the daemon that actually talks to the TPM device and
manages connections) should log some things to the syslog in this case, so
check dmesg and /var/log/syslog immediately after reproducing this issue.

-Tadd

Post by antonio ascrizzi
Hi,
I am pretty new to the field...
Starting from the following sample code I am trying to get *connected to
[...]
*# result = Tspi_Context_Create(&hContext);*
*# result = Tspi_Context_Connect(hContext, NULL);*
The second call gives me: "Connection failure" with error *0x00003011.*
From the Bios TPM is enabled and active (I rebooted the board many times).
Do you have any idea?
Thank you very much
aa
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