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SubjectRe: [HW PROBLEM] Intel I7 MCE. Erratum or not?
On Sun, Dec 7, 2008 at 11:13 PM, Arjan van de Ven <arjan@infradead.org> wrote:
> On Sun, 7 Dec 2008 22:55:10 +0100
> "Giangiacomo Mariotti" <gg.mariotti@gmail.com> wrote:
>
>> On Sun, Dec 7, 2008 at 4:25 AM, Robert Hancock <hancockr@shaw.ca>
>> wrote:
>> >
>> > If it only happened once then who knows, could be a cosmic ray or
>> > something.. but if it happens again it sounds like you likely have
>> > a bad CPU.
>> >
>> This same MCE happens every time I boot the 2.6.27.8 kernel, but it
>> never happens with kernel 2.6.26.8. It appears every time at log time
>> [ 301.7320xx](where the x represent the scale of the approximation).
>> In the previous log it appeared at [ 301.732037], now it appeared at
>> [ 301.732042]. It happens just once at that moment and then never
>> more until I reboot. No MCE gets logged with kernel 2.6.26.8 nor with
>> Windows Vista 32bit, not even under very heavy load on memory and
>> cpu(like 3d games or 3d mark vintage). Is this really an hardware
>> problem? Why does it get logged only on kernel 2.6.27.8 at that exact
>> moment? Now I'm gonna compile kernel 2.6.28-rc7 and see if there it
>> happens too. Any suggestion? It would be appreciated, because,
>> depending on the final result, I may be forced to change the
>> hardware(It's still guaranteed, but it'd mean some months without a
>> pc).
>
> which video driver are you using?
> While your HW might be defective (MCE's tend to indicate that), if it's
> software dependent it might also indicate that something, usually a
> video driver, gets the system in a really bad state.
> Also, make sure that you have MCE enabled in both kernels (I'm sure you
> do, but it's one of those things worth double checking)
>
> Arjan van de Ven Intel Open Source Technology Centre
> For development, discussion and tips for power savings,
> visit http://www.lesswatts.org
>

About the .config file :
cat config-2.6.26-1-amd64(unaffected/silent debian unstable based on
2.6.26.8) | grep MCE
CONFIG_X86_MCE=y
CONFIG_X86_MCE_INTEL=y
CONFIG_X86_MCE_AMD=y

cat config-2.6.27.8-nodbg001(affected, built by me) | grep MCE
CONFIG_X86_MCE=y
CONFIG_X86_MCE_INTEL=y
CONFIG_X86_MCE_AMD=y

I have an ati hd4850 1GB. It's not supported by the current x.org
server on my distro(7.3(I tried 7.4 in experimental, but hard lock
up)), so x uses the vesa driver. On 2.6.27.8(affected) I get this :
cat config-2.6.27.8-nodbg001 | grep RADEON
CONFIG_DRM_RADEON=m
CONFIG_FB_RADEON=m
CONFIG_FB_RADEON_I2C=y
CONFIG_FB_RADEON_BACKLIGHT=y
# CONFIG_FB_RADEON_DEBUG is not set

But lsmod gives this :
Module Size Used by
binfmt_misc 13836 1
kvm_intel 51136 0
kvm 149272 1 kvm_intel
acpi_cpufreq 12176 0
cpufreq_userspace 8324 0
cpufreq_stats 9160 0
fuse 57552 3
loop 20124 0
snd_pcm_oss 41648 0
snd_mixer_oss 18952 1 snd_pcm_oss
snd_seq_dummy 7300 0
snd_seq_oss 34640 0
snd_seq_midi_event 12168 1 snd_seq_oss
snd_hda_intel 447988 1
snd_seq 57400 5 snd_seq_dummy,snd_seq_oss,snd_seq_midi_event
i2c_i801 14492 0
i2c_core 29592 1 i2c_i801
snd_seq_device 12188 3 snd_seq_dummy,snd_seq_oss,snd_seq
pcspkr 7040 0
evdev 15520 3
snd_pcm 84016 2 snd_pcm_oss,snd_hda_intel
snd_timer 26784 2 snd_seq,snd_pcm
snd 67240 10
snd_pcm_oss,snd_mixer_oss,snd_seq_oss,snd_hda_intel,snd_seq,snd_seq_device,snd_pcm,snd_timer
wmi 11712 0
button 11680 0
soundcore 12176 1 snd
snd_page_alloc 13328 2 snd_hda_intel,snd_pcm
firewire_sbp2 20144 7
sg 37304 0
sr_mod 20004 0
cdrom 37928 1 sr_mod
jmicron 7040 0
ide_pci_generic 8708 0
ide_core 101336 2 jmicron,ide_pci_generic
pata_acpi 9344 0
pata_jmicron 8192 0
sd_mod 31368 14
usbhid 47488 0
hid 44320 1 usbhid
ff_memless 9488 1 usbhid
usb_storage 100000 0
ata_generic 10116 0
firewire_ohci 25996 0
ahci 36620 5
firewire_core 44976 2 firewire_sbp2,firewire_ohci
crc_itu_t 6400 1 firewire_core
libata 176352 4 pata_acpi,pata_jmicron,ata_generic,ahci
r8169 33436 0
mii 9984 1 r8169
scsi_mod 166184 6
firewire_sbp2,sg,sr_mod,sd_mod,usb_storage,libata
dock 14576 1 libata
ehci_hcd 38552 0
uhci_hcd 26408 0
thermal 23208 0
processor 44468 2 acpi_cpufreq,thermal
fan 8192 0
thermal_sys 18064 3 thermal,processor,fan

I can't find anything related to radeon or ati in here, so I guess
that the kernel too has loaded a vesa driver?

Giangiacomo


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