I noticed this week end that my computer (AMD 64x2) was severely dragging its feet when multi-tasking. The system monitor only shows one CPU, so I trolled /var/log/messages to see what's happening. This short segment seems relevant:
Mar 6 18:10:21 dharma kernel: [ 0.000000] ACPI: LAPIC (acpi_id[0x00] lapic_id[0x00] enabled) Mar 6 18:10:21 dharma kernel: [ 0.000000] Processor #0 15:11 APIC version 16 Mar 6 18:10:21 dharma kernel: [ 0.000000] ACPI: LAPIC (acpi_id[0x01] lapic_id[0x01] enabled) Mar 6 18:10:21 dharma kernel: [ 0.000000] Processor #1 15:11 APIC version 16 Mar 6 18:10:21 dharma kernel: [ 0.000000] WARNING: NR_CPUS limit of 1 reached. Processor ignored. uname -a gives Linux dharma 2.6.24-11-386 #1 Fri Feb 29 21:28:00 UTC 2008 i686 GNU/Linux I suppose I could fix this by forcing a more appropriate kernel package, the point being, I never had to. ** Also affects: linux-source-2.6.24 (Ubuntu) Importance: Undecided Status: New -- AMD 64x2 Dual Core Processor - Seen as single processor https://bugs.launchpad.net/bugs/127398 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs