On Wed, 29 Dec 2010 11:40:04 -0800, Linus Torvalds torvalds@linux-foundation.org wrote:
On Wed, Dec 29, 2010 at 10:21 AM, Randy Dunlap randy.dunlap@oracle.com wrote:
The only significant difference that I can see in the kernel message log is this:
Hmm. I suspect that difference should have gone away with commit 92971021c6328 (Revert "drm: Don't try and disable an encoder that was never enabled"), but clearly that didn't fix your blank screen.
Does reverting commit 448f53a1ede54eb854d036abf54573281412d650 ("drm/i915/bios: Reverse order of 100/120 Mhz SSC clocks") fix it for you? It does for some people..
Chris - why did that lvds_ssc_freq thing suddenly start mattering? Can we please just disable spread-spectrum entirely? Or perhaps only if we notice that it was enabled already? Or something?
It appeared to be the easiest fix for the machines I had to hand and was confirmed by several people with identical machines. However, it definitely caused a regression for working panels and therefore it will be reverted. -Chris