Public bug reported:
Binary package hint: linux-image
I upgraded my 32-bit ubuntu 9.10 to ubuntu 10.04 and the kernel 2.6.32 won't
boot.
Only the old kernel from ubuntu 9.10.
If I disable the quiet and splash screen option in grub I can see that
the kernel crashes while detecting/ initializing the cpu cores:
CPU 1 irqstacks, hard=c03dc000 soft=c03bc000
Not responding.
Inquiring remote APIC #1...
... APIC #1 ID: failed
... APIC #1 VERSION: failed
... APIC #1 SPIV: failed
CPU #1 not responding - cannot use it.
... for 8!! cpus. Which results in 8+8 = 16 Cores!!!
I can only boot with the option noht (hyperthreading disabled) wich results in
8 cpu cores, which is wrong because the i7 has 4 real und 4 hyperthreading
cores. Strangely this seems to work. An other way is to disable hyperthreading
in the bios which results in 4 useable cores.
The same error appears with the generic and the generic-pae image.
My System:
Intel Core i7-860
4GB RAM
Gigabyte P55M-UD4 with latest F8 Bios
Geforce 8800GTS
SATA AHCI Samsung 500GB
** Affects: linux-meta (Ubuntu)
Importance: Undecided
Status: New
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too many cores detected on intel i7
https://bugs.launchpad.net/bugs/572215
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