Pessoal,
Instalei o ubuntu 12.10 num note dv6-3090br e a imagem padrão "linux-image-generic" não reconhece os quatro núcleos do meu processador.
Ele reconhece apenas um núcleo e o note fica muito lento, esquenta e desliga.
Uma solução paliativa foi instalar pacote "linux-image-lowlatency" e tudo funciona normalmente.
Eu acho que isso é um bug nesta imagem, mas não conheço nada de kernel/compilação/modulos/etc.
segue algumas informações obtidas com a versão 12.10 e um outra com 12.04(mostrando que reconhece os 4 núcleos)
veja algumas mensagens no dmesg :
[ 0.077284] CPU0: AMD Phenom(tm) II P920 Quad-Core Processor stepping 03
[ 0.183909] Performance Events: AMD PMU driver.
[ 0.183914] ... version: 0
[ 0.183915] ... bit width: 48
[ 0.183916] ... generic registers: 4
[ 0.183918] ... value mask: 0000ffffffffffff
[ 0.183919] ... max period: 00007fffffffffff
[ 0.183921] ... fixed-purpose events: 0
[ 0.183922] ... event mask: 000000000000000f
[ 0.184108] NMI watchdog: enabled on all CPUs, permanently consumes one hw-PMU counter.
[ 0.184233] Booting Node 0, Processors #1
[ 5.520872] CPU1: Not responding.
[ 5.521062] #2
[ 10.505785] CPU2: Not responding.
[ 10.505911] #3 Ok.
[ 15.490650] CPU3: Not responding.
[ 15.490683] Brought up 1 CPUs
[ 15.490685] Total of 1 processors activated (3191.99 BogoMIPS).
reparem na mensagem : CPU1: Not responding.
outras informações obtidas no
/proc/cpuinfona 12.10cat /proc/cpuinfo
processor : 0
vendor_id : AuthenticAMD
cpu family : 16
model : 5
model name : AMD Phenom(tm) II P920 Quad-Core Processor
stepping : 3
microcode : 0x10000c8
cpu MHz : 800.000
cache size : 512 KB
physical id : 0
siblings : 1
core id : 0
cpu cores : 1
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 5
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 pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt nodeid_msr hw_pstate npt lbrv svm_lock nrip_save
bogomips : 3192.23
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 48 bits physical, 48 bits virtual
power management: ts ttp tm stc 100mhzsteps hwpstate
na 12.04(live cd)cat /proc/cpuinfo
processor : 0
vendor_id : AuthenticAMD
cpu family : 16
model : 5
model name : AMD Phenom(tm) II P920 Quad-Core Processor
stepping : 3
microcode : 0x10000c8
cpu MHz : 800.000
cache size : 512 KB
physical id : 0
siblings : 4
core id : 0
cpu cores : 4
apicid : 0
initial apicid : 0
fpu : yes
fpu_exception : yes
cpuid level : 5
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 pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt nodeid_msr npt lbrv svm_lock nrip_save
bogomips : 3192.23
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 48 bits physical, 48 bits virtual
power management: ts ttp tm stc 100mhzsteps hwpstate
processor : 1
vendor_id : AuthenticAMD
cpu family : 16
model : 5
model name : AMD Phenom(tm) II P920 Quad-Core Processor
stepping : 3
microcode : 0x10000c8
cpu MHz : 800.000
cache size : 512 KB
physical id : 0
siblings : 4
core id : 1
cpu cores : 4
apicid : 1
initial apicid : 1
fpu : yes
fpu_exception : yes
cpuid level : 5
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 pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt nodeid_msr npt lbrv svm_lock nrip_save
bogomips : 3192.03
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 48 bits physical, 48 bits virtual
power management: ts ttp tm stc 100mhzsteps hwpstate
processor : 2
vendor_id : AuthenticAMD
cpu family : 16
model : 5
model name : AMD Phenom(tm) II P920 Quad-Core Processor
stepping : 3
microcode : 0x10000c8
cpu MHz : 800.000
cache size : 512 KB
physical id : 0
siblings : 4
core id : 2
cpu cores : 4
apicid : 2
initial apicid : 2
fpu : yes
fpu_exception : yes
cpuid level : 5
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 pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt nodeid_msr npt lbrv svm_lock nrip_save
bogomips : 3192.06
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 48 bits physical, 48 bits virtual
power management: ts ttp tm stc 100mhzsteps hwpstate
processor : 3
vendor_id : AuthenticAMD
cpu family : 16
model : 5
model name : AMD Phenom(tm) II P920 Quad-Core Processor
stepping : 3
microcode : 0x10000c8
cpu MHz : 1600.000
cache size : 512 KB
physical id : 0
siblings : 4
core id : 3
cpu cores : 4
apicid : 3
initial apicid : 3
fpu : yes
fpu_exception : yes
cpuid level : 5
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 pni monitor cx16 popcnt lahf_lm cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs skinit wdt nodeid_msr npt lbrv svm_lock nrip_save
bogomips : 3192.06
TLB size : 1024 4K pages
clflush size : 64
cache_alignment : 64
address sizes : 48 bits physical, 48 bits virtual
power management: ts ttp tm stc 100mhzsteps hwpstate
Alguém tem alguma ideia do que possa ser feito para voltar com a imagem padrão reconhecendo os meus processadores?