Am Thu, 25 Dec 2014 11:40:47 -0800
Adrian Chadd <adr...@freebsd.org> schrieb:

> Would you be able to narrow it down to a small range of commits?
> that'll make it easier to chase down. :)
> 
> Thanks!
> 
> 
> 
> -adrian
> 
> 
> On 25 December 2014 at 10:42, O. Hartmann <ohart...@zedat.fu-berlin.de> wrote:
> >
> > Since 23rd's update of CURRENT, the kernel fails to boot on systems that 
> > boot via EFI.
> > Systems with legacy booting seem not to be affected.
> >
> > I just ran today into the problem updating a notebook with a Intel Haswell 
> > Intel
> > i5-4200M CPU (Haswell) on a Lenovo ThinkPad E540, bboting via UEFI, CURRENT 
> > r276200.
> > The very same caode base is running on several other boxes which boot via 
> > legacy
> > method. The very same failure showed up at the lab on an older HP Compaq 
> > 8300 system,
> > based on H81 chipset equipted with an Ivy-Bridge CPU, booting also via EFI. 
> > That box
> > stops at the exact same spot as the notebook does.
> >
> > The systems in question, also the legacy booting systems (aka the oldstyle 
> > loader boot
> > method), load drm2, i915kms.
> >
> > Booting old kernel/modules (via "boot kernel.old"), at CURRENT r275896 is 
> > all right.
> >
> > What is happening here?
> >
> > Merry christmas day,
> >
> > oh


I narrowed down the culprit commit to be between r276060 (works) and r276075 
(works not).
To avoid interferences from rogue modules, I disabled all modules loaded by the 
loader,
including drm2 and i915kms, but the picture is always the same. I'm sorry, I 
have some
duties to perform, so intersecting further is possible later only ... I 
performed the
iterative search of the foul commit by "svn update -r 276XXX" and then build 
kernel only
via "make kernel" - this just for the record in case some world-dependencies 
might have
effects. 

oh


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