[ipxe-devel] Surface devices having an issue with EFI timers

[Michael Brown]

On 24/09/17 22:32, Sebastian Roth wrote:
> 757ab9 - Wed, 4 May 2016 - Hang
> c917687 - Mon, 20 Jun 2016 - Hang
> 694c18 - Mon, 20 Jun 2016 - Hang
> e09331a - Wed, 7 Dec 2016 - Hang
> 5cf5ffe - Wed, 7 Dec 2016 - No hang
> d37e025 - Wed, 25 Jan 2017 - No hang
> 302f1ee - Thu, 26 Jan 2017 - wont boot at all on the surface
> d46c53c - Wed, 13 Sep 2017 - Hang

Thank you for all this testing!  The failure introduced in

   http://git.ipxe.org/ipxe.git/commitdiff/302f1ee

was probably fixed six commits later in

   http://git.ipxe.org/ipxe.git/commitdiff/a8f80a7

which means that there may be another range of working commits (and 
hence a more recent culprit for inducing failure).

Could you possibly test commit a8f80a7?  If that works, then it would be 
worth using http://ipxe.org/howto/bisect to find the most recent cause 
of failure.

Also, which iPXE binary are you using?  We've encountered some failures 
on the Surface due to the extremely buggy UNDI driver that Microsoft 
provides:

   http://git.ipxe.org/ipxe.git/commitdiff/97f0f56

Michael