Dell D820 TPM (BIOS: A03) and BitLocker Problems

Discussion in 'Windows Vista Security' started by Walter Porter, Oct 13, 2006.

  1. Anyone else having problems getting BitLocker to use the TPM on a Dell
    Latitude D820 with BIOS at A03? I've got Vista RC1 build 5728 with a fresh
    install, but BitLocker refuses to recognize or use the TPM. I've tried
    repeatedly turning the TPM on/off in both BIOS and the TPM snap-in, and
    re-initialzing the TPM, but no luck... :-(

    Walter Porter, Oct 13, 2006
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  2. Walter Porter

    Kim Guest


    I ran into a similar problem, although with a Latitude X1. The closest I got
    to an explanation was an inside message from MS that DELL has a problem with
    BIOS support for TPM 1.2. Alegedly this should be resolved with a BIOS
    upgrade from DELL to be released in November 2006.

    Note that this is all second-hand information and I cannot vouch for the
    reliability of this.

    - Kim
    Kim, Oct 13, 2006
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  3. Alegedly this should be resolved with a BIOS
    Thanks Kim!
    Walter Porter, Oct 14, 2006
  4. Hi Walter,
    I can confirm that there is a beta build of the Dell D820 BIOS that will work with the D820.
    Brian Komar [MVP], Oct 15, 2006
  5. Walter Porter

    Kim Guest

    Thanks for the update. Do you know if DELL releases this to the general
    public or do you have to bribe someone to get it? ;-)

    - Kim
    Kim, Oct 16, 2006
  6. It has not been released to public yet. It is undergoing testing internally at Dell and MS at
    this time. In fact, I am not running it yet, as I am unable to use Vista for some of my
    application testing.
    Brian Komar [MVP], Oct 16, 2006
  7. Walter Porter

    Kim Guest

    Thanks Brian, I'll hold my breath then.

    - Kim

    Kim, Oct 17, 2006
  8. Walter Porter

    Dave Burns Guest

    Please note that there is a fairly large update for WinXP's TPM software on
    the Latitude D820. It fixes a whole wealth of problems in Windows XP that
    do not, at first, seem related to TPM or the Embassy Security Suite (e.g.
    inexplicably broken applications). If you have the Wave Systems Corporation
    programs group or the Embassy Security Suite, this applies to you.

    Since TPM is both BIOS and O.S. dependent, expect lots of problems rooted in
    TPM to arise during the early days of Vista. Since Dell is not the
    developer of its TPM software, but is dependent on Broadcom and
    Wave/Embassy, I wouldn't be surprised to see a late TPM package for the
    D820. We may have to turn off the PIN and the TPM chip in BIOS on these
    great laptops in order to get early support for Vista RTM.

    Anybody else have insights on this issue?

    -- Dave
    Dave Burns, Oct 20, 2006
  9. Note: Dell has released BIOS update A04 for the Latitutde D820. So far so
    good on my laptop with BitLocker ...
    Walter Porter, Nov 6, 2006
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