Public bug reported:
Binary package hint: linux-image-2.6.24-24-generic
L3 Cache isn't detected at all, or at least, there's no sign of it anywhere I
looked. /proc/cpuinfo, /sys/cpu, lshw, dmesg - nothing. L1 and L2 and other CPU
info data are ok, but no L3 at all.
Powernow_k8 doesn't work either, probably the cpu isn't recognized properly?
cat /proc/cpuinfo:
processor : 0
vendor_id : AuthenticAMD
cpu family : 16
model : 2
model name : AMD Athlon(tm) 7750 Dual-Core Processor
stepping : 3
cpu MHz : 2700.000
cache size : 512 KB
physical id : 0
siblings : 2
core id : 0
cpu cores : 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 pni cx16 popcnt lahf_lm
cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs
bogomips : 5405.25
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 : 2
model name : AMD Athlon(tm) 7750 Dual-Core Processor
stepping : 3
cpu MHz : 2700.000
cache size : 512 KB
physical id : 0
siblings : 2
core id : 1
cpu cores : 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 pni cx16 popcnt lahf_lm
cmp_legacy svm extapic cr8_legacy abm sse4a misalignsse 3dnowprefetch osvw ibs
bogomips : 5400.03
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
Motherboard is a Gigabyte GA-M720-US3, nForce 720D
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
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AMD Athlon X2 7750 - L3 Cache isn't detected
https://bugs.launchpad.net/bugs/385372
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