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[Jim C <B647-11D7-AA56@xxxxxxxxxxxxx>]

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

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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.

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