On 10/17/07, Percy <[EMAIL PROTECTED]> wrote: > On 10/17/07, Percy <[EMAIL PROTECTED]> wrote: > > I have an AMD64 X2 dual core CPU Before, the cpuinfo displays 2 > > processors but not until recently, I just found out that > > /proc/cpuinfo recognizes this as single processor. Too bad I was not > > able to backup the old kernel (I'm using gentoo genkernel in building > > kernel.) > > > > This problem exists in gentoo/ubuntu live cds - there were 2 > > processors recognized in /proc/cpuinfo. I also tried using the > > configuration of the live cds pero I was not able to solve the > > problem. > > > > By the way, I have the following features enabled in my config ( I'm > > using 2.6.22-gentoo-r8 custom kernel) : > > > > Processor type and features > > [*] Symmetric multi-processing support > > [*] SMT (Hyperthreading) scheduler support > > [*] Multi-core scheduler support > > > > Any thoughts? > > > > ERRATA : This problem DOES NOT exist in gentoo/ubuntu live cds - there > were 2 processors recognized in /proc/cpuinfo. I also tried using the > configuration of the live cds pero I was not able to solve the > problem. >
More info from dmesg: Checking if this processor honours the WP bit even in supervisor mode... Ok. Calibrating delay using timer specific routine.. 4089.87 BogoMIPS (lpj=20449367) Mount-cache hash table entries: 512 CPU: After generic identify, caps: 178bfbff ebd3fbff 00000000 00000000 00002001 00000000 0000001f CPU: L1 I Cache: 64K (64 bytes/line), D cache 64K (64 bytes/line) CPU: L2 Cache: 512K (64 bytes/line) CPU 0(2) -> Core 0 CPU: After all inits, caps: 178bfbff ebd3fbff 00000000 00000410 00002001 00000000 0000001f Compat vDSO mapped to ffffe000. Checking 'hlt' instruction... OK. SMP alternatives: switching to UP code ACPI: Core revision 20070126 CPU0: AMD Athlon(tm) 64 X2 Dual Core Processor 3800+ stepping 02 SMP alternatives: switching to SMP code Booting processor 1/1 eip 3000 CPU 1 irqstacks, hard=c0465000 soft=c045d000 Not responding. Inquiring remote APIC #1... ... APIC #1 ID: 1000000 ... APIC #1 VERSION: 80050010 ... APIC #1 SPIV: ff CPU #1 not responding - cannot use it. ************** << What causes this?!?! Total of 1 processors activated (4089.87 BogoMIPS). ENABLING IO-APIC IRQs Tried passing noapic in the kernel pero wala pa rin.... _________________________________________________ Philippine Linux Users' Group (PLUG) Mailing List [email protected] (#PLUG @ irc.free.net.ph) Read the Guidelines: http://linux.org.ph/lists Searchable Archives: http://archives.free.net.ph
