Adaptec 2940UW problem with CDRW Yamaha 6416 SCSI

[Roman Melnyk]

Hi,

   Can anyone help me with the following problem.

I have a Dell PII 350 PC with a Adaptec 2940 UW card and an external Yamaha 
CDRW 6416 Drive.
The problem is when LINUX loads the Adaptec driver (AIC7xxx.o) and scans 
the SCSI bus for devices and it reaches the Yamaha drive, It resets the 
drive and causes the Yamaha drive to hang. It then causes the LINUX driver 
(AIC7xxx) to hang on that device and reports a device timeout. All the 
other devices on the external SCSI bus works great. I have RedHat 6.0 
installed. I have tried this on two different PC hardware with different 
2940 cards. The result is the same. The driver is sending something that 
the Yamaha drive does not like and then hangs the drive. It is worth 
mentioning that the drive under Windows 95 works great with the same 2940 
and PC hardware. Although the Windows drive does not do the same reset on 
the device at boot time as does the LINUX drive. I know that this Yamaha 
drive is new and there maybe some compatibility issues. But it would be 
nice to have it work under LINUX. Any help would be appreciated.


Yours Truly
Roman Melnyk

======================================================================
  Roman Melnyk  (CAE ELECTRONICS INC.  Mtl. PQ )
  CANADAIR / BOMBARDIER  AEROSPACE FLIGHT SIMULATOR TRAINING CENTER
  Flight Simulator:     Software Engineering   /  Integration Specialist

  E-Mail: romanm at cae.ca  romanjm at ibm.net   roman.j.melnyk at amexmail.com
  Tel:    (514) 344-6620  Ext # 68836       Fax: (514) 344-6646
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