[Bug 111553] Linux 4.10 and newer limit pixel clock to 165 MHz on Haswell-ULT laptop

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=111553

--- Comment #6 from Ville Syrjala <ville.syrjala at linux.intel.com> ---
(In reply to Michael Hanselmann (hansmi) from comment #5)
> (In reply to Michael Hanselmann (hansmi) from comment #4)
> > It's Gnome with Mutter. I'll investigate and follow-up for any future
> > readers.
> 
> It appears as if Mutter doesn't allow for custom modelines and passes the
> kernel's modelines through. I've tried the following kernel command line
> parameters:
> 
>   video=2560x1440MR at 59
>   video=HDMI-A-2:2560x1440R
> 
> Unfortunately the pixel clock is still limited to 165 MHz.
> 
> Ville, is there a way I can force a mode via parameters?

Nope. Looks like the cmdline mode is treated the same as mode coming from the
EDID, ie. is subject to getting filtered out from the connector's mode list.

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