dmasound module and AWACS errors

Hello,

A little bit ago I had posted that I was having problems with sendmail
being really flaky on an otherwise (mostly) stable machine.  sendmail kept
crashing with Illegal instruction, Segmentation faults, and
Trace/breakpoint expression errors.  I have not resolved that problem and
had no reports of anyone else with similar problems so it must be
something with my hardware.

Now, I'm experiencing a phenomenon of the Windows world - random
reboots.  I go home at night with the machine running Linux and I come
to work in the morning with the machine rebooted into MacOS.  Or
sometimes, the machine is just frozen and nothing except a reboot will
bring it back.  I've noticed on several occasions that there is a problem
with the sound module.  When the dmasound module is loaded, the following
error message is logged:

AWACS error: f

although the last character fluctuates through the hex characters
available.  Just today, when I rebooted my machine and after the module
loaded, that message scrolled by forever.  I was able to login and as soon
as I unloaded the dmasound module, the message stopped displaying.

I am running Mac On Linux occasionally with the sound extension installed
so I don't know if there is something getting initialized improperly when
I boot up from MacOS into Linux via BootX or what.

I would like to get a stable box though.  Sad to say, I'm looking forward
to the day when our one x86 box is freed up and I can take over that as a
workstation :/

Hardware info:

8500/180
128Mb memory
YellowDog Linux Champion Server 1.2
Kernel 2.2.15-2.9.0 (I had tried 2.4.0-ac7 but it caused the machine to
act a little bit crazy - it would respond normally most of the time but
every few minutes, it would quit responding)
Latest RPMS are installed
1 Gb drive that is almost full

Just wondering if this is a reproducible kernel issue or if I have
defective hardware.

--
Kevin M. Myer
Systems Administrator
Lancaster-Lebanon Intermediate Unit 13
(717)-560-6140


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"Kevin M. Myer" wrote:

I go home at night with the machine running Linux and I come to work in the
morning with the machine rebooted into MacOS.  Or sometimes, the machine is
just frozen and nothing except a reboot will bring it back.  I've noticed on
several occasions that there is a problem with the sound module.  When the
dmasound module is loaded, the following error message is logged:

AWACS error: f

Wonder if this might be related to the Powerbook lockups?


Michel


--
The computer revolution is over. The computers won.
______________________________________________________________________________
Earthling Michel Dänzer (MrCooper)  \  CS student and free software enthusiast
Debian GNU/Linux (powerpc,i386) user \   member of XFree86, Team *AMIGA*, AUGS

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Hi!

I've just mounted an Adaptec 2930 SCSI ultra-narrow controller into my
"new" G3. It works fine with Linux, but it refuse to go at 20MB/s as
it should. At boot time it tells 10MB/s and it reaches about 9.5MB/s
raw transfer. I connected a 9GB IBM U2W harddisk and it correctly runs
at 20MB/s with MacOS. It's the only device on the SCSI bus.
Is there any boot parameter or so to make it work in "ultra" mode ?

Bye.
    Giuliano Pochini ->)|(<- Shiny Corporation {AS6665} ->)|(<-


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Is there any boot parameter or so to make it work in "ultra" mode ?

I think what you want is in this clip from
/usr/src/linux/drivers/scsi/aic7xxx.c:

 *  A Boot time option was also added for not resetting the scsi bus.
 *
 *    Form:  aic7xxx=extended
 *           aic7xxx=no_reset
 *           aic7xxx=ultra
 *           aic7xxx=irq_trigger:[0,1]  # 0 edge, 1 level
 *           aic7xxx=verbose
 *

So you might try aic7xxx=ultra or aic7xxx=ultra,verbose.

I have no idea if this works or will even do anything; I just remember
running across this when trying to debug a tape drive problem.
_______________________________________________________________________________
Mike DeSimone        Applied Research Laboratories: The University of Texas
Research Engineer    Mail to: PO Box 8029       Shipments to: 10000 Burnet Rd.
Sonar Development             Austin, TX 78713                Austin, TX 78758
Office (512) 835-3061-------FAX (512) 835-3259--------desimone@arlut.utexas.edu

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On Wed, 21 Jun 2000, Mike DeSimone wrote:

quoted

Is there any boot parameter or so to make it work in "ultra" mode ?

I think what you want is in this clip from
/usr/src/linux/drivers/scsi/aic7xxx.c:

 *  A Boot time option was also added for not resetting the scsi bus.
 *
 *    Form:  aic7xxx=extended
 *           aic7xxx=no_reset
 *           aic7xxx=ultra
 *           aic7xxx=irq_trigger:[0,1]  # 0 edge, 1 level
 *           aic7xxx=verbose
 *

So you might try aic7xxx=ultra or aic7xxx=ultra,verbose.

I tried your latter suggestion, yet my dmesg still indicates only
10MB/sec on my PowerCenter Pro 210mhz/224MB RAM / kernel 2.2.16:

(scsi0) <Adaptec AIC-7860 Ultra SCSI host adapter> found at PCI 0/17/0
(scsi0) Narrow Channel, SCSI ID=7, 3/255 SCBs
(scsi0) Warning - detected auto-termination
(scsi0) Please verify driver detected settings are correct.
(scsi0) If not, then please properly set the device termination
(scsi0) in the Adaptec SCSI BIOS by hitting CTRL-A when prompted
(scsi0) during machine bootup.
(scsi0) Cables present (Int-50 YES, Ext-50 NO)
(scsi0) Downloading sequencer code... 423 instructions downloaded
scsi0 : Adaptec AHA274x/284x/294x (EISA/VLB/PCI-Fast SCSI) 5.1.28/3.2.4
       <Adaptec AIC-7860 Ultra SCSI host adapter>
scsi1 : 53C94
scsi : 2 hosts.
(scsi0:0:0:0) Synchronous at 10.0 Mbyte/sec, offset 15.
  Vendor: SEAGATE   Model: ST52160N          Rev: 0285
  Type:   Direct-Access                      ANSI SCSI revision: 02
Detected scsi disk sda at scsi0, channel 0, id 0, lun 0
(scsi0:0:6:0) Synchronous at 10.0 Mbyte/sec, offset 15.
  Vendor: IBM       Model: DDRS-39130        Rev: S97B
  Type:   Direct-Access                      ANSI SCSI revision: 02
Detected scsi disk sdb at scsi0, channel 0, id 6, lun 0
  Vendor: YAMAHA    Model: CRW4416S          Rev: 1.0g
  Type:   CD-ROM                             ANSI SCSI revision: 02
Detected scsi CD-ROM sr0 at scsi1, channel 0, id 3, lun 0
  Vendor: TEAC      Model: CD-ROM CD-516S    Rev: 1.0D
  Type:   CD-ROM                             ANSI SCSI revision: 02
Detected scsi CD-ROM sr1 at scsi1, channel 0, id 5, lun 0
scsi : detected 4 SCSI generics 2 SCSI cdroms 2 SCSI disks total.
sr0: scsi3-mmc drive: 16x/16x writer cd/rw xa/form2 cdda tray
Uniform CD-ROM driver Revision: 3.09
SCSI device sda: hdwr sector= 512 bytes. Sectors= 4238282 [2069 MB] [2.1
GB]
SCSI device sdb: hdwr sector= 512 bytes. Sectors= 17850000 [8715 MB] [8.7
GB]


Thanks,
Peter


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So you might try aic7xxx=ultra or aic7xxx=ultra,verbose.

I have no idea if this works or will even do anything; I just remember
running across this when trying to debug a tape drive problem.

It doesn't work :(


Bye.
    Giuliano Pochini ->)|(<- Shiny Corporation {AS6665} ->)|(<-


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