<div><blockquote class="gmail_quote" style="margin-top: 0; margin-right: 0; margin-bottom: 0; margin-left: 0; margin-left: 0.80ex; border-left-color: #cccccc; border-left-width: 1px; border-left-style: solid; padding-left: 1ex">
Date: Mon, 01 Jan 2007 15:00:14 +0100<br>From: Julian Sikorski <<a href="mailto:lordzanon@poczta.onet.pl">lordzanon@poczta.onet.pl</a>><br>Subject: [compiz] Freeze when swithing vt<br>To: <a href="mailto:compiz@lists.freedesktop.org">
compiz@lists.freedesktop.org</a><br>Message-ID: <<a href="mailto:459913EE.60301@poczta.onet.pl">459913EE.60301@poczta.onet.pl</a>><br>Content-Type: text/plain; charset=UTF-8<br><br>Hello. I am running 0.3.6 compiz under Fedora Core 6 and nvidia
1.0-9631<br>binary driver. I have noticed that switching to console with ctrl-alt-f1<br>and then back to x with ctrl-alt-f7 locks up the system with a black<br>screen more or less (sometimes the lockup is complete, sometimes the
<br>cursor moves and it is possible to switch back to console), A user on<br>nvnews forums suggest that disabling sync to vblank is a valid<br>workaround. Is this a compiz or a driver issue? Cheers.<br><br></blockquote></div>
<br>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
<a href="http://www.nvnews.net/vbulletin/showthread.php?t=77030">http://www.nvnews.net/vbulletin/showthread.php?t=77030</a> :<br>"If you are seeing intermittent performance problems such as hickups, setting the __GL_YIELD environment variable to "NOTHING" in compiz's environment may help"
<br>so its not really a fix.<br><br>