I think my system is suffering with the same (or similar) issue. The symptom is that during normal use (Ubuntu 13.10) the system will lock up. The mouse can still be moved but I can't click on any open applications. The sound services will continue to operate (seemingly in the background). Then I wait for about 10 to 20 seconds and the windows will kind of go nuts (and that's a technical term!) flashing all the windows up seemingly in a random order until it finally shows just the wall paper (background) and then settles down with a crash report. At that point, the system is either completely back to normal, or partially OK (the missing aspect being the menu bars of all open applications - in which case a re-boot is necessary).
The system is running a dual Intel CPUs (E2220 - 2.4GHz) with an Nvidia GeForce 7100 graphics card. It's a 64-bit install with 4.7Gb RAM. I have already installed the current nvidia drivers and tried to remove nouveau but that seemed to have already been removed. The crash report states: ExecutablePath: /usr/bin/compiz ProcCmdline: compiz Title: compiz crashed with SIGSEGV ApportVersion: 2.12.5-0ubuntu2.2 ProcVersionSignature: Ubuntu 3.11.0-14.21-generic 3.11.7 SegvAnalysis: Segfault happened at: 0x7f963629b960 <__memmove_ssse3+64>: movdqu (%rsi),%xmm0 PC (0x7f963629b960) ok source "(%rsi)" (0x7fcdcd19e000) not located in a known VMA region (needed readable region)! destination "%xmm0" ok SegvReason: reading unknown VMA SourcePackage: unity StacktraceAddressSignature: /usr/bin/compiz:11:x86_64:/usr/lib/nvidia-304/libnvidia-glcore.so.304.117+13e0b04:/usr/lib/nvidia-304/libnvidia-glcore.so.304.117+12dce1c:/usr/lib/nvidia-304/libnvidia-glcore.so.304.117+10b6e91:/usr/lib/nvidia-304/libnvidia-glcore.so.304.117+13910f1:/usr/lib/nvidia-304/libnvidia-glcore.so.304.117+1191b1b:/usr/lib/nvidia-304/libnvidia-glcore.so.304.117+12e431d:/usr/lib/nvidia-304/libGL.so.304.117+70a15:/usr/lib/compiz/libopengl.so+387a1:/usr/lib/compiz/libopengl.so+1e90e:/usr/lib/compiz/libopengl.so+1f2a5:/usr/lib/compiz/libopengl.so+2b9d9:/usr/lib/compiz/libopengl.so+1eeeb:/usr/lib/compiz/libopengl.so+2ee14:/usr/lib/compiz/libopengl.so+25b6a:/usr/lib/compiz/libdecor.so+1c4a9 -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to xorg-server in Ubuntu. https://bugs.launchpad.net/bugs/1184451 Title: Ubuntu 13.10 random screen freeze while Normal OS activites Status in “xorg-server” package in Ubuntu: Confirmed Status in “xserver-xorg-video-nouveau” package in Ubuntu: Confirmed Bug description: I have recently, re-installed fresh ubuntu 13.10 distribution release. But everything worked fine. until recently i had strange problem of my display screen getting freezed randomly; but no response to either mouse/keyboard. But i want to point it out; it happens randomly and is not specific ? Other day, i had music player playing in background, but screen freezed. but my music was still running. Kindly note, i used multiple monitor setup and same issue of screen freeze also cropped up. I,am not sure, whether it is bug ? thanks for the expertise support. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/xorg-server/+bug/1184451/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : [email protected] Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp

