Freezing with aic7895 and an SMP machine.

[Doug Ledford]

"Matthew M. DeLoera" wrote:
> 
> Hello,
> 
> I'm brand new to this list. I have a serious problem, so I'll try to ask
> in the nicest possible way....
> 
> I have an IBM Netfinity 7000-M10, with 4 processors. I installed RedHat
> 6.0 (2.2.5-15) without much trouble, but each time I rebuild my kernel,
> and boot with the new kernel, the machine freezes upon loading the
> aic7xxx driver.
> 
> (scsi0) <Adaptec AIC-7895 ..... > found at PCI 4/1
> (scsi0) Wide Channel B, SCSI ID=7, 32/255 SCBs
> (scsi0) Downloading sequencer code... 374 instructions downloaded
> (scsi1) <Adaptec AIC-7895 ..... > found at PCI 4/0
> (scsi1) Wide Channel A, SCSI ID=7, 32/255 SCBs
> (scsi1) Downloading sequencer code... 374 instructions downloaded
> scsi0 : Adaptec AHA274x/284x/294x (EISA/VLB/PCI-Fast SCSI) 5.1.15/3.2.4
>        <Adaptec AIC-7895 ..... >
> scsi1 : Adaptec AHA274x/284x/294x (EISA/VLB/PCI-Fast SCSI) 5.1.15/3.2.4
>        <Adaptec AIC-7895 ..... >
> scsi : 2 hosts.
> scsi : aborting command due to timeout : pid 0, scsi0, channel 0, id 0,
>        lun 0 Test Unit Ready 00 00 00 00 00
> scsi : aborting command due to timeout : pid 0, scsi0, channel 0, id 0,
>        lun 0 Test Unit Ready 00 00 00 00 00
> 
> And this is where I freeze. Is this a common problem with an SMP machine
> and the 7895 or the aix7xxx driver? Do I have to run a newer kernel? I
> didn't just download a newer kernel because I'm doing some installation
> testing. If any of you have any suggestions, or would like more info,
> please do e-mail me.
> 
> Hopefully someone out there has had a similar problem. I hate to ask
> this, if it's been a common or simple question!

You're obviously compiling the new kernel as an SMP kernel.  Boot the kernel
with the option "noapic" and it will work.

-- 
  Doug Ledford   <dledford at redhat.com>
   Opinions expressed are my own, but
      they should be everybody's.


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