Ubuntu
linux package

  1. Oneiric (11.10)
  2. Bug #614238
  3. Comment #174

Comment 174 for bug 614238

Revision history for this message
In , Paulo Zanoni (pzanoni) wrote :

Sorry, I forgot to tell you.

This issue was discussed in intel-gfx recently. Keith wrote a series of 9 patches on the code that is used by this bug.

I believe the patches landed here:
http://cgit.freedesktop.org/~jbarnes/linux?h=fix-pch-refclk

And the one that solves our problem is:
http://cgit.freedesktop.org/~jbarnes/linux/commit/?h=fix-pch-refclk&id=99eb6a01e5ac6cf28aadc64e6ff346939874dfd2

The root-cause is that on our machines we need to use DREF_NONSPREAD_CK505_ENABLE instead of DREF_NONSPREAD_SOURCE_ENABLE when setting the PCH_DREF_CONTROL register.

I don't think this will come for 3.1, but at least now distros can try to backport something :)