APIC error on CPU0: 40(40) with linux-image-2.6.20-16-generic on P4

[dorpm]

On my P4 linux-image-2.6.20-16-generic is installed and "dmesg" gives me a screen full of "APIC error on CPU0: 40(40)".

"dpkg -l | grep linux-image" tells me:
ii linux-686-smp 2.6.20.16.28.1 Obsoleted by: linux-image-generic
ii linux-image-2.6.20-16-generic 2.6.20-16.29 Linux kernel image for version 2.6.20 on x86
ii linux-image-686 2.6.20.16.28.1 Obsoleted by: linux-image-generic
ii linux-image-generic 2.6.20.16.28.1 Generic Linux kernel image

Here my lsmod:
Module Size Used by
kqemu 124580 0
nfs 240876 0
nfsd 218992 17
exportfs 6912 1 nfsd
lockd 64904 3 nfs,nfsd
sunrpc 161340 12 nfs,nfsd,lockd
ppdev 10116 0
fglrx 540004 11
processor 31048 0
speedstep_lib 6148 0
cpufreq_userspace 5408 0
cpufreq_stats 7360 0
cpufreq_powersave 2688 0
cpufreq_ondemand 9228 0
freq_table 5792 2 cpufreq_stats,cpufreq_ondemand
cpufreq_conservative 8200 0
tc1100_wmi 8068 0
dev_acpi 12292 0
video 16388 0
sbs 15652 0
i2c_ec 6016 1 sbs
dock 10268 0
button 8720 0
container 5248 0
nls_iso8859_1 5120 3
nls_cp437 6784 3
vfat 14208 3
fat 53916 1 vfat
nls_utf8 3072 1
ntfs 107764 1
ipv6 268960 12
ndiswrapper 194608 0
lp 12452 2
snd_intel8x0 34332 0
snd_ac97_codec 98464 1 snd_intel8x0
ac97_bus 3200 1 snd_ac97_codec
snd_pcm_oss 44544 0
snd_mixer_oss 17408 1 snd_pcm_oss
snd_pcm 79876 3 snd_intel8x0,snd_ac97_codec,snd_pcm_oss
snd_seq_dummy 4740 0
snd_seq_oss 32896 0
snd_seq_midi 9600 0
snd_rawmidi 25472 1 snd_seq_midi
snd_seq_midi_event 8448 2 snd_seq_oss,snd_seq_midi
snd_seq 52592 6 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_seq_midi_event
snd_timer 23684 2 snd_pcm,snd_seq
snd_seq_device 9100 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_rawmidi,snd_seq
i2c_sis96x 6532 0
analog 12832 0
serio_raw 7940 0
parport_pc 36388 1
snd 54020 10 snd_intel8x0,snd_ac97_codec,snd_pcm_oss,snd_mixer_oss,snd_pcm,snd_seq_oss,snd_rawmidi,snd_seq,snd_timer,snd_seq_device
psmouse 38920 0
i2c_core 22656 2 i2c_ec,i2c_sis96x
gameport 16520 1 analog
parport 36936 3 ppdev,lp,parport_pc
pcspkr 4224 0
sis_agp 9604 1
agpgart 35400 2 fglrx,sis_agp
soundcore 8672 1 snd
shpchp 34324 0
pci_hotplug 32576 1 shpchp
snd_page_alloc 10888 2 snd_intel8x0,snd_pcm
tsdev 8768 0
evdev 11008 3
ext3 133128 3
jbd 59816 1 ext3
mbcache 9604 1 ext3
ide_cd 32672 0
cdrom 37664 1 ide_cd
ide_disk 17024 10
pata_sis 14732 0
ata_generic 9092 0
libata 125720 2 pata_sis,ata_generic
scsi_mod 142348 1 libata
sis5513 14856 0 [permanent]
raid10 26240 0
sis900 24704 0
mii 6528 1 sis900
floppy 59524 0
ehci_hcd 34188 0
ohci_hcd 22532 0
usbcore 134280 4 ndiswrapper,ehci_hcd,ohci_hcd
generic 5124 0 [permanent]
raid456 126480 0
xor 16648 1 raid456
raid1 25600 0
raid0 9600 0
multipath 9856 0
linear 7296 0
md_mod 79764 6 raid10,raid456,raid1,raid0,multipath,linear
dm_mod 59084 10
fbcon 42656 0
tileblit 3584 1 fbcon
font 9216 1 fbcon
bitblit 6912 1 fbcon
softcursor 3200 1 bitblit
vesafb 9220 0
capability 5896 0
commoncap 8192 1 capability

If any additional information is required please let me know.

[Sarazar (rcrook)]

I am experiencing the same. But I am also experiencing random lock ups. Usually after a couple of days running. Powering down seems to be the only fix it as the system will not unlock (kscreensaver) and login seems to hang on the vts. I have been able to prevent the errors showing up by putting "noapic" as a kernel argument. But this disables the SMP. I really not sure if that will cause a loss of performance. (Not that up on the differences).

My Machine is a HP Compaq 6715b Laptop running a AMD Turion(tm) 64 X2 Mobile Technology TL-64 stepping 01 Dual Core.

dpkg -l | grep linux-image
ii linux-image-2.6.20-15-generic 2.6.20-15.27 Linux kernel image for version 2.6.20 on x86
ii linux-image-2.6.20-16-generic 2.6.20-16.29 Linux kernel image for version 2.6.20 on x86
ii linux-image-generic 2.6.20.16.28.1 Generic Linux kernel image

uname -a
Linux memme 2.6.20-16-generic #2 SMP Thu Jun 7 19:00:28 UTC 2007 x86_64 GNU/Linux

lsmod
Module Size Used by
nls_iso8859_1 6528 1
nls_cp437 8192 1
vfat 16256 1
fat 58672 1 vfat
isofs 38628 1
udf 86664 0
rfcomm 45352 6
l2cap 28160 5 rfcomm
nfsd 266920 13
exportfs 7808 1 nfsd
ppdev 11272 0
powernow_k8 16480 1
cpufreq_powersave 3072 0
cpufreq_stats 8416 0
cpufreq_userspace 6176 0
cpufreq_ondemand 10640 0
cpufreq_conservative 9736 0
freq_table 6336 3 powernow_k8,cpufreq_stats,cpufreq_ondemand
tc1100_wmi 9224 0
pcc_acpi 15616 0
sony_acpi 7064 0
dev_acpi 17028 0
video 19080 0
battery 12040 0
container 6144 0
sbs 17856 0
button 10016 0
i2c_ec 6912 1 sbs
i2c_core 26496 1 i2c_ec
dock 11992 0
ac 6920 0
asus_acpi 19756 0
backlight 8448 1 asus_acpi
ipv6 307456 14
nfs 263384 6
lockd 73136 3 nfsd,nfs
sunrpc 184392 12 nfsd,nfs,lockd
fuse 51888 3
ndiswrapper 233408 0
fglrx 623096 11
sbp2 26628 0
lp 15048 0
snd_hda_intel 24224 6
snd_hda_codec 262528 1 snd_hda_intel
snd_pcm_oss 49536 0
snd_mixer_oss 19840 1 snd_pcm_oss
snd_pcm 92808 5 snd_hda_intel,snd_hda_codec,snd_pcm_oss
joydev 12928 0
snd_seq_dummy 5380 0
usb_storage 80448 1
snd_seq_oss 36608 0
gspca 616272 0
pcmcia 43800 0
snd_seq_midi 11008 0
snd_rawmidi 29696 1 snd_seq_midi
snd_seq_midi_event 9856 2 snd_seq_oss,snd_seq_midi
snd_seq 61856 6 snd_seq_dummy,snd_seq_oss,snd_seq_midi,snd_s...