On Thu, 15 Sep 2011 01:27:17 +0200, Samuel Thibault <samuel.thiba...@ens-lyon.org> wrote: Non-text part: multipart/mixed > Hello, > > I'm trying to upgrade from 3.0 to 3.1-rcsomething on a DELL latitude > E6420, but dual head is broken. Here is the scenario: > > - Turn computer on with VGA1 connected. Both LVDS1 and VGA1 show the > text console fine. > - Start X. VGA1 shows X fine, but LVDS1 (1600x900 resolution) shows an > odd screen: completely black on the left part (about 1060x900), sort > of gray on the right part (about 540x900). Playing with xrandr doesn't > help, I can at best make it completely black with --off, and not get > it back again with --auto or anything else.
Can you try disabling frame buffer compression? i915.i915_enable-fbc=0 I'm about to send a patch to disable this by default; I've gotten two people saying that this helps them already. -- keith.pack...@intel.com
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