[Bug 100760] Rapid flickering when an app is placed on the second Nouveau ZaphodHeads display

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

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https://bugs.freedesktop.org/show_bug.cgi?id=100760

--- Comment #2 from Ilia Mirkin <imirkin-FrUbXkNCsVf2fBVCVOL8/A@public.gmane.org> ---
While Zaphod is considered a legacy feature, that doesn't mean that things
should break. Just that it's unlikely to be extended to support new things.

There has recently been some bugs introduced into xserver which break
non-xrandr setups. There are also some issues in the nouveau driver. One of
those was fixed in xf86-video-nouveau 1.0.15. For the xserver issues, see bug
#100293.

I cannot comment on any bugs that happen in MATE/whatever other software as a
result of multi-screen displays. Note that these are not commonly tested. If
you can do 'DISPLAY=:0.1 xterm', then everything else is down to the X clients.

Please try the above fixes and see if they improve things. If they don't,
you're going to have to debug this, or provide sufficient info for others to
debug it.

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