[Bug 75013] [NVC1] [Quadro 600] Display update issues, stale rendered content

[bugzilla-daemon-CC+yJ3UmIYqDUpFQwHEjaQ@public.gmane.org]

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https://bugs.freedesktop.org/show_bug.cgi?id=75013

--- Comment #6 from Sudarshan <spartha80-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org> ---
(In reply to comment #5)
> (In reply to comment #4)
> > (In reply to comment #1)
> > > I see that you're using displayport. Is it an actual DP monitor, or are you
> > > using a DP->xyz adapter?
> > > 
> > > I recently posted a patch that should fix computing number of lanes/lane
> > > speeds for DP on pre-nvd0 cards:
> > > http://lists.freedesktop.org/archives/nouveau/2014-February/016205.html
> > > 
> > > Can you see if that helps you? Should apply to any 3.9+ kernel.
> > 
> > I tried the patch but no luck :(
> 
> Yeah, if you're not using the DP port, I wouldn't expect it to. In
> hindsight, I realized that I misread your log -- you're using the DVI-I-1
> connector, not DP-1.
> 
> Unfortunately I don't have any great ideas atm... could you try to upgrade
> to the latest kernel and see if things have magically resolved themselves?
> 
> Assuming that they haven't, can you attach a boot log with
> 
> nouveau.config=PDISP=debug,VBIOS=trace drm.debug=0xe
> 
> from the latest kernel? Perhaps it'll yield some interesting info.

I will try that. One observatino is that the issue is not seen with Live CD. Is
there a difference between the installed OS and the live CD? This surprised me,
as I was expecting a smooth sail...

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