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On 07/20/2017 10:46 AM, loke...@gmail.com wrote:
> On Thursday, 20 July 2017 16:22:22 UTC+8, Patrik Hagara  wrote:
> 
>> That's a non-fatal error, I have that in my log too.
>> 
>> What's more interesting is the last photo, in particular the
>> line:
>> 
>> ERR: SENTER disabled by feature control MSR (5)
>> 
>> I _think_ this means that your motherboard/BIOS does not support
>> Intel TXT as it seems to be deliberately disabled in the CPU's 
>> Model-Specific Register (MSR).
>> 
>> Maybe try searching for the TXT-enabling option in BIOS again (it
>> may be hidden until you turn on something else, eg. Intel
>> VT-d/IOMMU like on my Lenovo laptop). Check whether there's a
>> BIOS update available, too
> 
> Thank you! You were right of course. There was a disabled option
> referring to "trusted execution" that was turned off. Enabling that
> gave me much more than 3 pages of debug output.
> 
> Unfortunately, the machine reboots shortly after the "SENTER",
> causing the machine go into an infinite bootloop.
> 
> Note that it never even gets to the point where it asks for the TPM
> password.
> 
> Would screenshots of all the pages of debug be useful?
> 
> Thanks and regards, Elias
> 
This sounds like the exact same issue I've encountered -- and managed
to fix by adding "min_ram=0x2000000" to the tboot cmdline arguments
(see tboot readme [1] for details).


Cheers,
Patrik


[1] https://sourceforge.net/p/tboot/code/ci/default/tree/README
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