Mailinglist Archive: opensuse-bugs (6460 mails)

[bugzilla_noreply@xxxxxxxxxx]

https://bugzilla.novell.com/show_bug.cgi?id=275866

           Summary: Intel Core 2 Duo reports wrong speed
           Product: openSUSE 10.2
           Version: Final
          Platform: x86-64
               URL: http://www.suseforums.net/index.php?showtopic=34123
        OS/Version: openSUSE 10.2
            Status: NEW
          Severity: Normal
          Priority: P5 - None
         Component: Basesystem
        AssignedTo: bnc-team-screening@xxxxxxxxxxxxxxxxxxxxxx
        ReportedBy: ascendant256@xxxxxxxxx
         QAContact: qa@xxxxxxx


The dynamic CPU frequency scaling mechanism does not detect the frequency of my
processor correctly.
Relevant hardware:
motherboard ECS P965T-A
http://www.ecs.com.tw/ECSWebSite/Products/ProductsDetail.aspx?DetailID=681&CategoryID=1&DetailName=Feature&MenuID=44&LanID=9
   Attention---v
   Northbridge: Intel P965 Express
   Southbridge: Intel ICH8
   BIOS is newest available.
CPU Intel Core 2 Duo E6400
   Attention---v
   normal operating frequency: 2130MHz
   current operating frequency: 2660 MHz
   detected operating frequency: 800 MHz
The scaler detects two possible frequencies, 600MHz and 800MHz.  While the
system is supposedly running at 800MHz, it is running at the full 2600MHz. 
While it is supposedly running at 600 MHz, it is actually running at (around)
1900MHz.
These numbers are based on times for SuperPI and assuming proportional time
performance numbers to actual MHz.

I have not been able to test whether or not this same error occurs with other
Linux OSs or kernels.  Disabling SpeedStep in the BIOS seems not to have an
effect.  below is the output of cat /proc/cpuinfo :

processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 15
model name      : Intel(R) Core(TM)2 CPU          6400  @ 2.13GHz
stepping        : 6
cpu MHz         : 600.000
cache size      : 2048 KB
physical id     : 0
siblings        : 2
core id         : 0
cpu cores       : 2
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 syscall nx lm
constant_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr lahf_lm
bogomips        : 5323.86
clflush size    : 64
cache_alignment : 64
address sizes   : 36 bits physical, 48 bits virtual
power management:

processor       : 1
vendor_id       : GenuineIntel
cpu family      : 6
model           : 15
model name      : Intel(R) Core(TM)2 CPU          6400  @ 2.13GHz
stepping        : 6
cpu MHz         : 600.000
cache size      : 2048 KB
physical id     : 0
siblings        : 2
core id         : 1
cpu cores       : 2
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 syscall nx lm
constant_tsc pni monitor ds_cpl vmx est tm2 cx16 xtpr lahf_lm
bogomips        : 5320.38
clflush size    : 64
cache_alignment : 64
address sizes   : 36 bits physical, 48 bits virtual
power management:


-- 
Configure bugmail: https://bugzilla.novell.com/userprefs.cgi?tab=email
------- You are receiving this mail because: -------
You are on the CC list for the bug, or are watching someone who is.