Question

2

How to debug Unity? (It works from live CD, but it doesn't work after update...)

rated 0 times [ 2] [ 0] / answers: 1 / hits: 997 / 1 Year ago, sat, february 4, 2023, 10:06:57

I've tested Ubuntu 12.04 from live usb before executing the automagic update (from 11.10 to 12.04) and everything was fine. Then, after updating, I couldn't even get Unity 2D to work. I've installed Gnome packages, so I can use Gnome classic (only the "with no effects" option works).

Does any one know how to debug Ubuntu/Unity to try to get it working? (Or I'll need to do a fresh install...)

Answers

Only authorized users can answer the question. Please sign in first, or register a free account.

antebrow

Add To Favorites

Follow

Total Points: 291

Total Questions: 135

Total Answers: 117

Location: New Caledonia

Member since Thu, Mar 23, 2023

1 Year ago

answered 1 Year ago girdleas · Accepted Answer

I've found out the solution. It is related to a NVIDIA's driver problem.

Looking for messages in /var/log/syslog, I've discovered an error message from which I've taken the main words:

segfault error 4 in libc-2.15.so compiz

A search on Google and I've found this post:

Compiz crashes with SIGSEGV after upgrade to 12.04

http://ubuntuforums.org/showthread.php?t=1966002&page=2

So, the problem is related to NVIDIAS's proprietary drivers. (There are two options from Additional Drivers, none of them works...) Disabling them brings me back the normal Unity, which unfortunately runs slowly, for obvious reasons. That's why I don't get this problem when I use the live usb: the proprietary drivers are not enabled by default.

Now, we've got to wait NVIDIA fix this issue...