[Bug 109245] Commit 516a49cc19467e298d08a404f73a6e311f4548d1 causes increase in boot time on Sandy Bridge

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=109245

--- Comment #3 from Ville Syrjala <ville.syrjala at linux.intel.com> ---
Created attachment 143020
  --> https://bugs.freedesktop.org/attachment.cgi?id=143020&action=edit
[PATCH] drm/i915: Try to sanitize bogus DPLL state left over by  broken SNB
BIOSen

I think this ought to work around the problem. It's not ideal though since we
still get a bunch of WARNs.

As mentioned in the patch I think this same problem was seen on some other SNB
machine years ago, but it got fixed by a BIOS update. Sadly looks like your
machine doesn't have that option (unless I missed something on the ASUS
website).

Please test and let me know whether this helps.

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