Linux - unexpected interrupt...

[Christian Brandt]

I am running plain Suse6.0/Linux 2.2.5 and suddenly these errors
appeared:

Apr  4 18:29:23 lance kernel: (scsi0) Downloading sequencer code... 419
instructions downloaded
Apr  4 18:29:23 lance kernel: scsi0 : Adaptec AHA274x/284x/294x
(EISA/VLB/PCI-Fast SCSI) 5.1.10/3.2.4
Apr  4 18:29:23 lance kernel:        <Adaptec AIC-7880 Ultra SCSI host
adapter>
Apr  4 18:29:23 lance kernel: scsi : 1 host.
Apr  4 18:29:23 lance kernel:   Vendor: IBM       Model:
DDRS-39130D       Rev: DC1B
Apr  4 18:29:23 lance kernel:   Type:  
Direct-Access                      ANSI SCSI revision: 02
Apr  4 18:29:23 lance kernel: Detected scsi disk sda at scsi0, channel
0, id 0, lun 0
Apr  4 18:29:23 lance kernel:   Vendor: IBM       Model:
DDRS-39130D       Rev: DC1B
Apr  4 18:29:23 lance kernel:   Type:  
Direct-Access                      ANSI SCSI revision: 02
Apr  4 18:29:23 lance kernel: Detected scsi disk sdb at scsi0, channel
0, id 1, lun 0
Apr  4 18:29:23 lance kernel:   Vendor: IBM       Model:
DCAS-34330        Rev: S61A
Apr  4 18:29:23 lance kernel:   Type:  
Direct-Access                      ANSI SCSI revision: 02
Apr  4 18:29:23 lance kernel: Detected scsi disk sdc at scsi0, channel
0, id 2, lun 0
Apr  4 18:29:23 lance kernel:   Vendor: PIONEER   Model: CD-ROM
DR-U06S    Rev: 1.05
Apr  4 18:29:23 lance kernel:   Type:  
CD-ROM                             ANSI SCSI revision: 02
Apr  4 18:29:23 lance kernel: scsi : detected 3 SCSI disks total.
Apr  4 18:29:23 lance kernel: (scsi0:0:0:0) Synchronous at 40.0
Mbyte/sec, offset 8.
Apr  4 18:29:23 lance kernel: SCSI device sda: hdwr sector= 512 bytes.
Sectors= 17850000 [8715 MB] [8.7 GB]
Apr  4 18:29:23 lance kernel: (scsi0:0:1:0) Synchronous at 40.0
Mbyte/sec, offset 8.
Apr  4 18:29:23 lance kernel: SCSI device sdb: hdwr sector= 512 bytes.
Sectors= 17850000 [8715 MB] [8.7 GB]
Apr  4 18:29:23 lance kernel: (scsi0:0:2:0) Synchronous at 20.0
Mbyte/sec, offset 15.
Apr  4 18:29:23 lance kernel: SCSI device sdc: hdwr sector= 512 bytes.
Sectors= 8467200 [4134 MB] [4.1 GB]
Apr  4 18:29:23 lance kernel: Partition check:
Apr  4 18:29:23 lance kernel:  sda: sda1 sda2 < sda5 sda6 sda7 sda8 >
Apr  4 18:29:23 lance kernel:  sdb: sdb1 < sdb5 sdb6 >
Apr  4 18:29:23 lance kernel:  sdc: sdc1 sdc2 < sdc5 sdc6 sdc7 sdc8 sdc9
sdc10 >
Apr  4 18:29:23 lance kernel: VFS: Mounted root (ext2 filesystem)
readonly.
 [...]
Apr  4 18:39:14 lance kernel: unexpected IRQ vector 77 on CPU#1!
Apr  4 18:39:22 lance kernel: unexpected IRQ vector 70 on CPU#0!
Apr  4 18:41:35 lance kernel: Uhhuh. NMI received for unknown reason 2c.
Apr  4 18:41:35 lance kernel: Dazed and confused, but trying to continue
Apr  4 18:41:35 lance kernel: Do you have a strange power saving mode
enabled?

 Those NMI and IRQ-party goes on at an rate of one event every two
minutes.

 Will it wreck my system or can I ignore it?

 This appeared exactly when I replaced my old Ultra-Nonwide IBM-DCAS
with two Ultra2-Wide DDRS-Drives and it disappears when I downgrade
again. (btw, I know, U2W doesn`t boost my UW-system, but U2W costs less
and maybe some day with my next sytem I can make use of it?)

 The System is a GigabyteDX Dual-PentiumMMX233-System with onboard
aic7880 UltraWide.

 And an additional question: Can I use the termination of the
U2W-DDRS-Drives to terminate my bus or is LVD/U2W-termination an evil
thing at an SE/UW-bus? I already tested it both ways, but for now I use
an extra SE/UW-terminator.

-- 
Christian Brandt

 Life is short and in most cases it ends with death - Sir Sinclair


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