[compiz] Freeze when swithing vt

[okasion]

>
> Date: Mon, 01 Jan 2007 15:00:14 +0100
> From: Julian Sikorski <lordzanon at poczta.onet.pl>
> Subject: [compiz] Freeze when swithing vt
> To: compiz at lists.freedesktop.org
> Message-ID: <459913EE.60301 at poczta.onet.pl>
> Content-Type: text/plain; charset=UTF-8
>
> Hello. I am running 0.3.6 compiz under Fedora Core 6 and nvidia 1.0-9631
> binary driver. I have noticed that switching to console with ctrl-alt-f1
> and then back to x with ctrl-alt-f7 locks up the system  with a black
> screen more or less (sometimes the lockup is complete, sometimes the
> cursor moves and it is possible to switch back to console), A user on
> nvnews forums suggest that disabling sync to vblank is a valid
> workaround. Is this a compiz or a driver issue? Cheers.
>
>
This appears to be a Xorg/NVIDIA driver very annoying problem. You can fix
the vterm-X switching problem launching Compiz with the
"--indirect-rendering" option, but you wont be able to get the intermittent
performance fix you get setting '__GL_YIELD="NOTHING"' using indirect
rendering, as it says here
http://www.nvnews.net/vbulletin/showthread.php?t=77030 :
"If you are seeing intermittent performance problems such as hickups,
setting the __GL_YIELD environment variable to "NOTHING" in compiz's
environment may help"
so its not really a fix.
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