← Back to team overview

kernel-packages team mailing list archive

[Bug 236348] Re: /proc/cpuinfo bad cpu speed detection

 

[Expired for linux (Ubuntu) because there has been no activity for 60
days.]

** Changed in: linux (Ubuntu)
       Status: Incomplete => Expired

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/236348

Title:
  /proc/cpuinfo bad cpu speed detection

Status in “linux” package in Ubuntu:
  Expired

Bug description:
  Binary package hint: linux-source-2.6.24

  I have a Core 2 Quad Q6600 (stock speed : 9*266MHz=2.4GHz) running @ 7*400MHz=2.8GHz.
  dmidecode reports the good settings but the /proc/cpuinfo file is wrong and indicates 3.6GHz (stock ratio x overclocked fsb).
  The motherboard is a Gygabyte GA-965P-DS3.

  /proc/cpuinfo : 
  ==========
  processor	: 0
  vendor_id	: GenuineIntel
  cpu family	: 6
  model		: 15
  model name	: Intel(R) Core(TM)2 Quad CPU           @ 2.40GHz
  stepping	: 7
  cpu MHz		: 3600.000
  cache size	: 4096 KB
  physical id	: 0
  siblings	: 4
  core id		: 0
  cpu cores	: 4
  fpu		: yes
  fpu_exception	: yes
  cpuid level	: 10
  wp		: yes
  flags		: fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe syscall nx lm constant_tsc arch_perfmon pebs bts rep_good pni monitor ds_cpl vmx est tm2 ssse3 cx16 xtpr lahf_lm
  bogomips	: 7204.67
  clflush size	: 64
  cache_alignment	: 64
  address sizes	: 36 bits physical, 48 bits virtual
  power management:

  
  dmidecode :
  ==========
  # dmidecode 2.9
  SMBIOS 2.4 present.

  Handle 0x0004, DMI type 4, 35 bytes
  Processor Information
  	Socket Designation: Socket 775
  	Type: Central Processor
  	Family: Other
  	Manufacturer: Intel
  	ID: F7 06 00 00 FF FB EB BF
  	Version: Intel(R) Core(TM)2 Quad CP
  	Voltage: 1.3 V
  	External Clock: 400 MHz
  	Max Speed: 4000 MHz
  	Current Speed: 2800 MHz
  	Status: Populated, Enabled
  	Upgrade: Socket 478
  	L1 Cache Handle: 0x000A
  	L2 Cache Handle: 0x000B
  	L3 Cache Handle: Not Provided
  	Serial Number:  
  	Asset Tag:  
  	Part Number:

To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/236348/+subscriptions