Do you have the correct TPM driver loaded in kernel? Does /sys/class/misc/tpm0 
exist?
AFAIK you can TXT-launch a kernel that has no driver (as it is likely loaded in 
initramfs or later anyway), txt-stat will probably also work even without a 
working in the kernel...

Jan


> On 01 Sep 2016, at 16:32, Brian E Luckau <bluc...@sgi.com> wrote:
> 
> In the past using tboot 1.8.x and versions of trousers, tpm tools, etc, 
> etc. that came with the distros, I was able to see the PCR values with:
> 
> cat /sys/class/misc/tpm0/device/pcrs
> 
> Currently I'm in CentOS 7.2 and have compliled and installed tboot 1.9.4.  I 
> see this, which with my limited knowledge base tells me something is goign 
> right:
> 
> 
> [root@server0 ~]# txt-stat | grep measured
>          TXT measured launch: TRUE
> TBOOT: measured launch succeeded
> 
> [root@server0 ~]# txt-stat | grep senter
>             senter_done: TRUE
> 
> 
> Any idea why I can't see the PCR values?
> 
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