Thanks, Stephen. I found the apport crash file and I'm attaching it.
I stand corrected about SSE support. You are absolutely correct. This processor is an AMD Sempron 2400+ (K7 architecture) which does support SSE but not SSE2. On further reflection, I'm starting to suspect the AMD driver as the guilty party, and not compiz. CPU ID (0) Vendor ID "AuthenticAMD" CPU ID (1) Processor & Features EAX Processor: 0x681 bits 13-12 type: 0 bits 11-8 instruction family: 6 bits 7-4 model: 8 bits 3-0 stepping: 1 EDX Feature Flags: 0x0383FBFF bit 0 Floating-Point Unit yes bit 1 Virtual Mode Ext yes bit 2 Debugging Ext yes bit 3 Page Size Ext yes bit 4 Time Stamp Counter yes bit 5 Model Specific Regs yes bit 6 Physical Addr Ext yes bit 7 Machine Check Ext yes bit 8 CMPXCHG8 Instruction yes bit 9 Advanced Prog Int Cntlr (APIC) yes bit 11 SYSENTER/SYSEXIT yes bit 12 Machine Type Range Regs yes bit 13 Global Paging Ext yes bit 14 Machine Check Arch yes bit 15 Cond Move Instruction yes bit 16 Page Attribute Table yes bit 17 PSE-36 yes bit 23 MMX Technology yes bit 24 FXSAVE/FXRSTOR yes bit 25 Streaming SIMD Extension yes CPU ID (80000000) Extended Functions CPU ID (80000001) Processor & Features EAX Processor: 0x781 bits 11-8 Generation: 7 bits 7-4 Model: 8 bits 3-0 Step: 1 EDX Feature Flags: 0xC1CBFBFF bit 0 Floating-Point Unit yes bit 1 Virtual Mode Ext yes bit 2 Debugging Ext yes bit 3 Page Size Ext yes bit 4 Time Stamp Counter yes bit 5 Model Specific Regs yes bit 6 Page Address Ext yes bit 7 Machine Check Ext yes bit 8 CMPXCHG8 Instruct yes bit 9 APIC yes bit 11 SYSCALL/SYSRET yes bit 12 Memory Type Range Regs yes bit 13 Global Paging Ext yes bit 14 Machine Check yes bit 15 Int Cond Move Instruct yes bit 16 Page Attribute Table yes bit 17 PSE-36 yes bit 19 Reserved yes bit 22 AMD MMX Extensions yes bit 23 MMX Technology yes bit 24 Reserved yes bit 30 AMD 3D Now! Extensions yes bit 31 3D Now! yes CPU ID (80000002..4) Processor Name "AMD Athlon(tm) XP" ** Attachment added: ".crash file" https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/1409608/+attachment/4296984/+files/_usr_bin_compiz.1000.crash -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to compiz in Ubuntu. https://bugs.launchpad.net/bugs/1409608 Title: The 32-bit i386 install executes SSE instructions. Status in compiz package in Ubuntu: Incomplete Bug description: I tried to install the 32-bit ubuntu-14.04.1-desktop-i386.iso on an older, but working computer with a 2 GHz AMD Sempron processor with 4 GiB of RAM. This system would seem to handily exceed the system requirements. By "working", I mean that it has been running Windows XP for years. The distribution did not install a graphics driver for the integrated graphics chip, so I installed an AMD/ATI video card, downloaded the latest driver from the AMD web site, and installed the driver. On reboot, the system crashed while initializing the desktop. The apport bug report tool was launched, but as far as I can tell it did not upload the crash report. I'm not sure why. Before clicking on "send", I browsed thru the report details. It said the internal error was in /usr/bin/compiz. Further down in the report was a disassembly of a code fragment which showed instructions from the SSE extensions to the x86 instruction set. The AMD Sempron processor does not support SSE extensions to the architecture. Executing code that contains those instructions on this type of processor will result in an illegal instruction exception. I don't know if compiz was compiled with the wrong compiler flags for i386, or if it contains optimization that assumed the extensions were present instead of checking the appropriate CPUID feature bits. To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/compiz/+bug/1409608/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
