Hi Shane, list,

I use the term "brick" because I have been unable to recover it in that 
situation.  I exchanged it under warranty for a new unit.

HP has posted a relevant support document here:
http://h20000.www2.hp.com/bizsupport/TechSupport/Document.jsp?objectID=c01658899&lang=en&cc=us&taskId=135&prodSeriesId=3688868&prodTypeId=321957

...but this did not work for me.  My advice for folks is to upgrade to 
the newest available BIOS before trying tboot.

Cheers,
-Jon


Wang, Shane wrote:
> Great to hear that.
>
> Jon, when you say "Using F.09 will brick the laptop", I am wondering how your 
> laptop can recover from the brick situation. Or, just remove the battery... 
> you mentioned in the last email? That will help others.
>
> Thanks.
> Shane
>
> Jonathan M. McCune wrote:
>   
>> Hello list,
>>
>> A success story!
>>
>> I forgot to include intel_iommu=on on the kernel command line (and
>> then to use a kernel which supports it).  Summary:
>>
>> Laptop: HP 8530p
>> BIOS Revision: F.0E
>> tboot revision: changeset:   172:da3ebacc9b6d
>> kernel: 2.6.30.6 with CONFIG_DMAR=yes
>> grub:
>>
>> title           tboot.hg + Ubuntu 9.04, kernel 2.6.30.6
>> root            (hd0,1)
>> kernel          /tboot.gz logging=vga,memory,serial
>> module          /vmlinuz-2.6.30.6 root=/dev/sda3 ro intel_iommu=on
>> module          /initrd.img-2.6.30.6
>> module          /GM45_PM45_SINIT_19.BIN
>> boot
>>
>> This works!
>>
>> HOWEVER: Using BIOS revision F.09 (and I suspect, any earlier version)
>> will BRICK THE LAPTOP.  I did not try BIOS revision F.0C.
>>
>> Cheers,
>> -Jon
>>     
>
>   


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