[Bug 75385] Dell Latitude E5440 screen goes blank when external VGA monitor connected

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=75385

--- Comment #9 from Jani Nikula <jani.nikula at intel.com> ---
(In reply to comment #8)
> I did this
> 
> echo "options i915 enable_fbc=0" >> /etc/modprobe.d/i915.conf

We've renamed the parameter for consistency. It's still i915_enable_fbc in
Linus' tree, but enable_fbc in -nightly. See 'modinfo i915 | grep enable_fbc'
or 'ls /sys/module/i915/parameters/*enable_fbc' for which one you have.

> and rebooted, but output of dmesg looks very similar.  How can I tell if fbc
> has been disabled?

'cat /sys/module/i915/parameters/*enable_fbc'

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