[Intel-gfx] i915 driver doesn't find all Modelines that nouveau driver finds

[Brian J. Murrell]

On Mon, 2015-03-02 at 20:44 +0200, Ville Syrjälä wrote:
> On Mon, Mar 02, 2015 at 07:07:47PM +0100, Daniel Vetter wrote:
> > On Mon, Mar 02, 2015 at 11:33:39AM -0500, Brian J. Murrell wrote:
> > > 
> > > [   50.508381] [drm:drm_mode_debug_printmodeline] Modeline 27:"1600x1200" 0 202500 1600 1664 1856 2160 1200 1201 1204 1250 0x40 0x5
> > > [   50.508383] [drm:drm_mode_prune_invalid] Not using 1600x1200 mode 15
> > > [   50.508385] [drm:drm_mode_debug_printmodeline] Modeline 28:"1600x1200" 0 189000 1600 1664 1856 2160 1200 1201 1204 1250 0x40 0x5
> > > [   50.508385] [drm:drm_mode_prune_invalid] Not using 1600x1200 mode 15
> > > [   50.508387] [drm:drm_mode_debug_printmodeline] Modeline 66:"1400x1050" 0 179500 1400 1504 1656 1912 1050 1053 1057 1105 0x40 0x6
> > > [   50.508388] [drm:drm_mode_prune_invalid] Not using 1400x1050 mode 15
> > > [   50.508390] [drm:drm_mode_debug_printmodeline] Modeline 71:"1600x1200" 0 175500 1600 1664 1856 2160 1200 1201 1204 1250 0x40 0x5
> > > [   50.508390] [drm:drm_mode_prune_invalid] Not using 1600x1200 mode 15
> > > 

> The <180MHz modes are dropped only due to the +5% we add to account for SSC on
> FDI. I wonder if we really need that much?

I guess this would get me the "71" modeline but not the "27" one.  Any
idea what refresh rate that "71" would be at?  I forget how to do all of
that video timing math.

Cheers,
b.

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