<html> <head> <meta http-equiv="content-type" content="text/html; charset=utf-8"> </head> <body text="#000000" bgcolor="#FFFFFF"> Hey X community, I've recently attempted to upgrade Ubuntu (14.10; Xorg 1.16) and ran into problems with the X hanging quite frequently; although I'm not sure what exactly is causing those hangs. I've reinstalled to 14.04 (Xorg 1.15.1) and had the same problems; then finally reinstalled to Ubuntu 13.10 (Xorg 1.14.6) and haven't had any problems so far. I've heard that its most helpful if I can perform something called "Bisecting", where I continuously upgrade X until I hit the version which is causing me problems. I've never done anything like this before, and I have a few questions before I start: <ul> <li>I've read that X is so closely tied in with Ubuntu that you simply cannot upgrade or downgrade X without breaking some other components of Ubuntu. If that's the case, then have I already done all that I can do by determining that the issue occurs between 1.14.6 and 1.15.1?</li> <li>I feel ridiculous saying that the hang occurs randomly. Obviously it must be caused by something, but the logs don't state anything of interest. In a case like this, what can I do to pinpoint exactly what's going on?</li> <li>Is there any way that I can temporarily upgrade X just to ease in this testing & bug reporting process? That would be much more preferable than reinstalling the OS twice, and also for testing things in the future before I upgrade my system</li> </ul> Any insight into these things would be really very helpful. I'm googling around, but there doesn't seem to be a lot of guides for those newbies like me. Thanks! </body> </html>