Please read this before reporting a bug:
https://wiki.archlinux.org/title/Bug_reporting_guidelines
Do NOT report bugs when a package is just outdated, or it is in the AUR. Use the 'flag out of date' link on the package page, or the Mailing List.
REPEAT: Do NOT report bugs for outdated packages!
https://wiki.archlinux.org/title/Bug_reporting_guidelines
Do NOT report bugs when a package is just outdated, or it is in the AUR. Use the 'flag out of date' link on the package page, or the Mailing List.
REPEAT: Do NOT report bugs for outdated packages!
FS#10545 - i686 only utilizes one core of AMD64 X2 4200+ processor
Attached to Project:
Arch Linux
Opened by Trevor Hooten (marathe25) - Saturday, 31 May 2008, 06:45 GMT
Last edited by Greg (dolby) - Tuesday, 17 June 2008, 10:51 GMT
Opened by Trevor Hooten (marathe25) - Saturday, 31 May 2008, 06:45 GMT
Last edited by Greg (dolby) - Tuesday, 17 June 2008, 10:51 GMT
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DetailsDescription: When running the i686 kernel, only one core of my AMD64X2 processor is being used, despite the fact that both are recognized as existing. The x86_64 kernel properly utilizes both cores. SMP is enabled.
Additional info: cat /proc/cpuinfo: processor : 0 vendor_id : AuthenticAMD cpu family : 15 model : 107 model name : AMD Athlon(tm) 64 X2 Dual Core Processor 4200+ stepping : 2 cpu MHz : 2194.561 cache size : 512 KB physical id : 0 siblings : 1 core id : 0 cpu cores : 1 fdiv_bug : no hlt_bug : no f00f_bug : no coma_bug : no fpu : yes fpu_exception : yes cpuid level : 1 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ht syscall nx mmxext fxsr_opt rdtscp lm 3dnowext 3dnow pni cx16 lahf_lm cmp_legacy svm extapic cr8_legacy 3dnowprefetch ts fid vid ttp tm stc 100mhzsteps bogomips : 4505.83 clflush size : 64 dmesg | grep -i proc: Processor #0 15:11 APIC version 16 Processor #1 15:11 APIC version 16 Detected 2194.561 MHz processor. Checking if this processor honours the WP bit even in supervisor mode...Ok. CPU0: AMD Athlon(tm) 64 X2 Dual Core Processor 4200+ stepping 02 Booting processor 1/1 ip 4000 Total of 1 processors activated (4505.83 BogoMIPS). uname -a: Linux homebase 2.6.25-ARCH #1 SMP PREEMPT Fri May 16 14:52:43 CEST 2008 i686 AMD Athlon(tm) 64 X2 Dual Core Processor 4200+ AuthenticAMD GNU/Linux |
This task depends upon
CPU socket: AM2
Bios version: Phoenix 6.00 PG
I can't figure out a way to detect my mainboard type. My system came with zero documentation, and the manufacturer website is less than helpful. If you know of any way to detect my mainboard, I'd be happy to do it. Google failed to turn anything up for me. Thanks.
CPU #1 not responding - cannot use it.
So two CPUs are detected, but one isn't brought up because it isn't responding (BIOS or ACPI problems). Looking at the ACPI output, I found out your PC is an Acer, there's at least one more post of a user with fedora and xen that doesn't get the 2nd core working. Try googling on your specific acer model, maybe there's someone who got it working.