Hong Hu wrote on 2013-05-27:
> Hi,
>
> Currently I'm trying to work on TBOOT. However I get an error which is
> "TXT.ERRORCODE: 0xc00020a1". I checked the sinit_errors.txt and found this
> error was due to "device scope of VT-d DMAR ACPI table is invalid". I
searched
> on line and someone said this was due to VT-d unenabled. However I have
> enabled VT-d in the BIOS.
>
> Can anyone give me some help?
>
> Here is the environment to run tboot:
>
> Laptop: Thinkpad T400
> BIOS: Version 7UET94WW (the latest version, released on 16 Dec 2012
> by Lenovo); TXT, VT, VT-d are enabled.
> TBOOT: Version 1.7.3 (Released on 2012-12-28);
> ACM: GM45_GS45_PM45_SINIT_51.BIN
> OS: Ubuntu 12.04 with 3.5.0-30-generic kernel
>
> My grub.cfg for tboot is :
>
> menuentry 'Ubuntu, with Linux 3.5.0-30-generic' --class ubuntu --class
gnu-linux
> --class gnu --class os {
> recordfail gfxmode $linux_gfx_mode insmod gzio insmod part_msdos
> insmod ext2 set root='(hd0,msdos1)' search --no-floppy --fs-uuid
> --set=root 9047b871-f55c-44d1-952c-48bf0de35fcd multiboot
> /tboot.gz /tboot.gz logging=vga,memory,serial module
> /boot/vmlinuz-3.5.0-30-generic intel_iommu=on
> root=UUID=9047b871-f55c-44d1-952c-48bf0de35fcd ro quiet splash
> $vt_handoff
> module /boot/initrd.img-3.5.0-30-generic
> module /boot/GM45_GS45_PM45_SINIT_51.BIN
> }
>
> The tboot log file is also attached.
>
> Thanks,
> Hu Hong
>I used to try T400, but never succeeded too. If possible, I suggest you try T420/430 or X220/230. Jimmy
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