Hi team,
The problem happens only when boot the system start up.
The hardware is a Laptop Dell Inspiron M5110.
daniels@xnsaroot:/proc$ cat version
Linux version 3.11.0-19-generic (buildd@comet) (gcc version 4.8.1 (Ubuntu/Linaro 4.8.1-10ubuntu8) ) #33-Ubuntu SMP Tue Mar 11 18:48:34 UTC 2014
daniels@xnsaroot:/proc$ cat cpuinfo
processor : 0
vendor_id : AuthenticAMD
cpu family : 18
model : 1
model name : AMD A6-3400M APU with Radeon(tm) HD Graphics
stepping : 0
microcode : 0x3000027
cpu MHz : 800.000
cache size : 1024 KB
physical id : 0
siblings : 4
core id : 0
cpu cores : 4
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 6
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc rep_good nopl nonstop_tsc extd_apicid aperfmperf pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt arat cpb hw_pstate npt lbrv svm_lock nrip_save pausefilter
bogomips : 2794.83
TLB size : 1536 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management: ts ttp tm stc 100mhzsteps hwpstate cpb
processor : 1
vendor_id : AuthenticAMD
cpu family : 18
model : 1
model name : AMD A6-3400M APU with Radeon(tm) HD Graphics
stepping : 0
microcode : 0x3000027
cpu MHz : 800.000
cache size : 1024 KB
physical id : 0
siblings : 4
core id : 1
cpu cores : 4
apicid : 1
initial apicid : 1
fpu : yes
fpu_exception : yes
cpuid level : 6
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc rep_good nopl nonstop_tsc extd_apicid aperfmperf pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt arat cpb hw_pstate npt lbrv svm_lock nrip_save pausefilter
bogomips : 2794.83
TLB size : 1536 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management: ts ttp tm stc 100mhzsteps hwpstate cpb
processor : 2
vendor_id : AuthenticAMD
cpu family : 18
model : 1
model name : AMD A6-3400M APU with Radeon(tm) HD Graphics
stepping : 0
microcode : 0x3000027
cpu MHz : 800.000
cache size : 1024 KB
physical id : 0
siblings : 4
core id : 2
cpu cores : 4
apicid : 2
initial apicid : 2
fpu : yes
fpu_exception : yes
cpuid level : 6
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc rep_good nopl nonstop_tsc extd_apicid aperfmperf pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt arat cpb hw_pstate npt lbrv svm_lock nrip_save pausefilter
bogomips : 2794.83
TLB size : 1536 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management: ts ttp tm stc 100mhzsteps hwpstate cpb
processor : 3
vendor_id : AuthenticAMD
cpu family : 18
model : 1
model name : AMD A6-3400M APU with Radeon(tm) HD Graphics
stepping : 0
microcode : 0x3000027
cpu MHz : 800.000
cache size : 1024 KB
physical id : 0
siblings : 4
core id : 3
cpu cores : 4
apicid : 3
initial apicid : 3
fpu : yes
fpu_exception : yes
cpuid level : 6
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt pdpe1gb rdtscp lm 3dnowext 3dnow constant_tsc rep_good nopl nonstop_tsc extd_apicid aperfmperf pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt arat cpb hw_pstate npt lbrv svm_lock nrip_save pausefilter
bogomips : 2794.83
TLB size : 1536 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 40 bits physical, 48 bits virtual
power management: ts ttp tm stc 100mhzsteps hwpstate cpb
Status changed to 'Confirmed' because the bug affects multiple users.