[Bug 94825] LVDS blank screen on GM45

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=94825

--- Comment #19 from Ville Syrjala <ville.syrjala at linux.intel.com> ---
(In reply to Rob Kramer from comment #17)
> (In reply to Ville Syrjala from comment #16)
> > > Yes, the vendor-provided hdd has windows on it (we use a CF card). That
> > > windows works fine - by which I mean that it shows the windows desktop at
> > > the right resolution.
> > 
> > One extra question that comes to mind is whether Windows works if you boot
> > with 
> > and external monitor attached and LVDS disabled. Is that possible? I did see
> > some "boot display" knob at least in your BIOS screenshot.
> 
> Ok, I tried that; set 'boot display device' to 'crt' instead of 'lvds +
> crt'. After booting, windows logo shows on crt (at lower mode), then the
> LVDS panel switches on an shows the windows desktop as per normal.
> 
> Not sure what that tells you.. :)

It tells me Windows *somehow* figures out the correct panel timings.

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