Messages in this thread | | | From | <> | Subject | RE: [tpmdd-devel] Linux 3.1-rc9 | Date | Tue, 11 Oct 2011 07:09:31 +0000 |
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-----Original Message----- From: Arkadiusz Miśkiewicz [mailto:a.miskiewicz@gmail.com] >> I guess the BIOS seems not to be initializing the TPM correctly. Any >> chance you can get a hold of a BIOS update for your machine?
> Then I looked into bios options on this thinkpad t400 and there are 3 possible > TPM settings: Enabled, Invisible, Disabled.
> Invisible is - visible but not working - according to bios help. No idea why > such option exists but I had it enabled.
> I guess there is some way to make "Invisible" mode properly handled in Linux, > too.
Invisible here probably means that the bios simply does not send a TPM_Startup which is needed to get the TPM running. (and maybe it even let's physical presence untouched too). If the driver would send a TPM_Startup(STATE) (which usually should not cause any problems, since if you send it twice the second one simply gets 'ignored' with a "invalid postinit" return code) the tpm would probably work in the invisible case too.
Thanks, Peter
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