<html> <head> <base href="https://bugs.freedesktop.org/"> </head> <body> <div> <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - System randomly freezes or crashes to the login screen, glitches until rebooted" href="https://bugs.freedesktop.org/show_bug.cgi?id=100306#c33">Comment # 33</a> on <a class="bz_bug_link bz_status_REOPENED " title="REOPENED - System randomly freezes or crashes to the login screen, glitches until rebooted" href="https://bugs.freedesktop.org/show_bug.cgi?id=100306">bug 100306</a> from <a class="email" href="mailto:sonichedgehog_hyperblast00@yahoo.com" title="MirceaKitsune <sonichedgehog_hyperblast00@yahoo.com>"> MirceaKitsune</a> <pre>After months of careful testing and experimentation, I have discovered what seems to be the primary trigger of this freeze at last. It's not what triggers it per say, but what "rigs" the system and causes it to crash within the course of the next hours... the actual trigger is alt-tab switching between windows, or certain desktop effects playing. The freeze is mined into the system when you disable and re-enable KDE desktop compositing. If I hit Alt + Shift + F12 to turn off desktop effects, then hit the key combo to turn them back on... there is a great chance that within a few hours the crash occurs. If I don't toggle compositing on the run and just leave it enabled after the system has started, I seem to be fine... this only happens if I turn it off and back on during runtime. It's uncertain whether anything else mines the system, but this is almost always what seems to do it for me. Notice: I use OpenGL 3.1 for desktop compositing. I remember selecting OpenGL 2.0 long ago, but that still caused the freeze at that time. I can't use Xrender on a daily basis as many effects don't work with it. No other compositor options seem to affect the problem either. It would be highly appreciated if at least after this information, the developers and maintainers could finally look at this issue! It has taken me months to confirm this as a cause, and I really hope this information (alongside dozens of comments and logs I have posted) can finally be put to use.</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>