[Bug 850628]

[Alexander Mezin]

(In reply to comment #197)
> It *is* disabled by default - what does not prevent people from happily
> activating it, because some guy in a random forum told them "it's the best
> trick ever" - and then report crashes in driver that resolve by "after
> disabling unredirection, bug is gone"
Then add big red label in KCM: "This could cause crashes. Don't file bugs, you've been warned". Compositing could also cause problems with buggy drivers.

> We basically (and actually for far too long) expose users to a feature,
> while knowing it will crash their WM more or less for sure.
For me it NEVER crashed KWin or anything.

> > It worked for me very well (Intel HD 3000).
> Since you mentioned DRI_PRIME, it will rather be some IGP-GPU briged system?
Yes, but KWin is always running on Intel, and doesn't even know about Radeon.

> As far as i was told, DRI_PRIME does only work *with* redirection, ie.
> whenever you disable the compositor, the DRI_PRIME context paints nothing.
No, for me it paints black screen when compositing is enabled (without unredirection).

> If it does NOT work redirected for you, the better solution to suspend
> compositing altogether is not affected.
I can't find an option to automatically suspend compositing in KCM.
Instead there's now non-working (silently!) option for unredirection.

And... Mutter and Compiz now do unredirection by default. And seems that
they don't crash too much.

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https://bugs.launchpad.net/bugs/850628

Title:
  When the Euphoria (GL) Screensaver starts, KWIN crashes

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