Вставил опцию lapic в grub2 и сделал grub-mkconfig, получилось так:
[root@comp-pentium-m-004f9e ~]# dmesg | grep -A6 -B2 firmware
[ 0.000000] HighMem zone: 296802 pages, LIFO batch:31
[ 0.000000] Using APIC driver default
[ 0.000000] SFI: Simple Firmware Interface v0.81 http://simplefirmware.org
[ 0.000000] Local APIC disabled by BIOS -- reenabling.
[ 0.000000] Found and enabled local APIC!
[ 0.000000] smpboot: Boot CPU (id 0) not listed by BIOS
[ 0.000000] smpboot: Allowing 1 CPUs, 0 hotplug CPUs
[ 0.000000] PM: Registered nosave memory: [mem 0x00000000-0x00000fff]
[ 0.000000] PM: Registered nosave memory: [mem 0x0009f000-0x0009ffff]
но на видимость сетей это ни повлияло никак