SecondCoreNotRecognized

I recently installed gnewsense on my first generation MacBook Pro. I now realize that the second core of the Intel Core Duo CPU is not recognized. Cf. the following result of running cat /proc/cpuinfo:

processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 14 model name : Genuine Intel(R) CPU 1500 @ 2.00GHz stepping : 8 cpu MHz : 1000.000 cache size : 2048 KB fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no 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 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx constant_tsc bts pni monitor vmx est tm2 xtpr bogomips : 3998.94 clflush size : 64

If I boot Ubuntu (which I have on another partition), the two cores are recognized, and the cat /proc/cpuinfo gives the following information:

processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 14 model name : Genuine Intel(R) CPU 1500 @ 2.00GHz stepping : 8 cpu MHz : 1000.000 cache size : 2048 KB physical id : 0 siblings : 2 core id : 0 cpu cores : 2 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no 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 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx constant_tsc bts pni monitor vmx est tm2 xtpr bogomips : 3999.24 clflush size : 64

processor : 1 vendor_id : GenuineIntel cpu family : 6 model : 14 model name : Genuine Intel(R) CPU 1500 @ 2.00GHz stepping : 8 cpu MHz : 1000.000 cache size : 2048 KB physical id : 0 siblings : 2 core id : 1 cpu cores : 2 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no 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 clflush dts acpi mmx fxsr sse sse2 ss ht tm pbe nx constant_tsc bts pni monitor vmx est tm2 xtpr bogomips : 3994.69 clflush size : 64

I have tried reinstalling linux-image-2.6.24-19-386 and rebooting, but that doesn't help either.

Is the kernel not compiled with support for dual core CPUs?

Hope someone can help out

You need to install the "generic" kernel.

linux-image-2.6.24-19-generic

gnoe, thank you very much for helping out, not only in this thread, but also in answering other questions I have had the last week or so since I switched to this wonderful fully free OS:-)

Now gnewsense recognizes both cores.

Hi,

 I have linux-image-2.6.24-19-generic  installed, and have tried reinstalling, but still only shows one cpu in the system monitor.

I've got an Intel Pentium D 2.8 GHz processor, and it's inside an HP a1440n.

Any ideas?

For me it worked after installation of linux-image-generic and linux-backports-modules-hardy-generic.

... and of course after choosing the correct image in the grub boot menu.

WebThingy,

Like filologen said, you'll have to choose the right kernel image from the grub boot menu. After updating gNewSense, grub automatically starts the i386 kernel image and *not* the generic kernel image, which you need to get both cores recognized.

To set the generic kernel image as the default selection in grub, you'll have to edit the /boot/grub/menu.lst file.

Doh! Haha, I should have realized that! lol

That worked like a charm, thanks guys! :)