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.
I have attached the corresponding dmesgs and Xorg.0.logs: as you can
see, the Xorg log doesn't change, while the dmesg changes a bit, I'm
getting a few
[drm:ironlake_update_pch_refclk] *ERROR* enabling SSC on PCH
the rest is the same.
Samuel