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Diffstat (limited to 'results/classifier/accel-gemma3:12b/kvm/1716132')
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diff --git a/results/classifier/accel-gemma3:12b/kvm/1716132 b/results/classifier/accel-gemma3:12b/kvm/1716132 new file mode 100644 index 000000000..f38fb9088 --- /dev/null +++ b/results/classifier/accel-gemma3:12b/kvm/1716132 @@ -0,0 +1,21 @@ + +Win 10 bitlocker won't initialise pass-through TPM + +All stock Ubuntu Zesty, Win10Pro KVM guest configured with OVMF and Q35. My host has an ASRock Z97 Extreme 6 board with a TPM header which is populated with v1.2 complaint device. + +Testing in my host the TPM device is function, I can tpm_takeownership and tpm_clear successfully and similar testing by passing the device through to a linux guest also succeeds. + +However using Bitlocker in Windows 10 Pro release 1703 Windows advises it cannot "Prepare" the device which I take to mean it cannot take ownership of it. I believe this to be related to Windows inability to view the TCG Event Log which is evidenced in the below 2 screencaps, however I'm no expert. + +https://s26.postimg.org/vter35eh5/Screenshot_20170907_114644.png +https://s26.postimg.org/klo854qyx/Screenshot_20170909_143841.png + +I've also tested the scenario with qemu 2.10 which provided the exact same results. The only difference in the test setup is that I had to make the guest boot with SeaBios instead of OVMF. (Windows wouldn't boot with OVMF with the boot manager giving me an error pointing to a BCD issue. Researching this it seemed related to an old ACPI problem, I believe this unrelated to my TPM issue so will do more research and raise a separate bug for this if needed.) + +Happy to provide further configurations and build logs as necessary so please advise me what is needed. + +Lastly for background reading. I've been trying to get TPM passthrough working with Windows for a long time now and have hit several different issues which I believe have been addressed by both code maturity in Qemu but also in Windows releases. An earlier bug report can be found here (https://bugs.launchpad.net/ubuntu/+source/qemu/+bug/1615722) which concludes advising me to raise this new/separate issue. + +Thanks in advance, + +Kelvin \ No newline at end of file |