[Bug 108085] Intel GeminiLake corruption at top of screen caused by fbc

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=108085

--- Comment #35 from Geraud <geraud.bonhomme63 at laposte.net> ---
(In reply to Daniel Drake from comment #26)
> (In reply to Geraud from comment #25)
> > Yes I did the test yesterday adding kernel parameter or driver config
> > file...no luck the issue is still there.
> 
> Can you double check that the parameter change took effect with the
> following command:
> 
> > sudo cat /sys/module/i915/parameters/enable_fbc
> 
> If it says "1" then you should open a new bug report as any screen
> corruption is not caused by fbc in that case.
> 
> If it says "0" then something is wrong with the way you are setting the
> parameter.

OK I did the check tonight: I put the drivers option using echo "options i915
enable_fbc=0" >> /storage/.config/modprobe.d/i915.conf.

I restarted and I did cat /sys/module/i915/parameters/enable_fbc with root
account...the result is "1"...

But still I'm a bit confused...if it is "1" shouldn't that mean that fbc is
activated? Meaning the issue comes from fbc?

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