Le 29/12/10 21:16, Jesse Barnes a écrit :
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?
Randy, Jeff and Alex, does the below help at all? If so, it may be the minimal fix we want for 2.6.37.
diff --git a/drivers/gpu/drm/i915/intel_bios.c b/drivers/gpu/drm/i915/intel_bios index 2b20786..d27d016 100644 --- a/drivers/gpu/drm/i915/intel_bios.c +++ b/drivers/gpu/drm/i915/intel_bios.c @@ -263,6 +263,9 @@ parse_general_features(struct drm_i915_private *dev_priv, dev_priv->int_tv_support = general->int_tv_support; dev_priv->int_crt_support = general->int_crt_support; dev_priv->lvds_use_ssc = general->enable_ssc;
/* force disable until we can parse this correctly */if (IS_GEN5(dev) || IS_GEN6(dev))dev_priv->lvds_use_ssc = 0; if (dev_priv->lvds_use_ssc) { if (IS_I85X(dev))
I also encountered the black screen problem after commit 448f53a1. I can confirm that the above patch solves the problem.
François Valenduc