adaptec 2904CD

[Philip]

Due to lack of isa slots I replaced my adaptec 1505 with a 2904CD.
Connected to it are a HP dat drive and a ancient cd burner housed in an 
external case.
This combination works fine in windows NT and used to work fine with the
1505 in linux, but using the 2904 in linux gives me big troubles.
The dat drive gets recognised fine, but when it starts on the burner it 
just gets in an time-out loop.

This is the dmesg output:
(scsi0) <Adaptec AIC-7850 SCSI host adapter> found at PCI 0/16/0
(scsi0) Narrow Channel, SCSI ID=7, 3/255 SCBs
(scsi0) Downloading sequencer code... 415 instructions downloaded
scsi0: Adaptec AHA274x/284x/294x (EISA/VLB/PCI-Fast SCSI) 5.1.31/3.2.4
        <Adaptec AIC-7850 SCSI host adapter>
scsi: 1 host.
(scsi0:0:4:0) Synchronous at 5.0 Mbyte/sec, offset 8.
   Vendor: HP        Model: HP35480A          Rev: 1009
   Type:   Sequential-Access                  ANSI SCSI revision: 02
Detected scsi tape st0 at scsi0, channel 0, id 4, lun 0
(scsi0:0:6:0) Synchronous at 4.4 Mbyte/sec, offset 15.
scsi: aborting command due to timeout : pid 7, scsi0, channel 0, id 6, lun 
0 Te
st Unit Ready 00 00 00 00 00
SCSI host 0 abort (pid 7) timed out - resetting
SCSI bus is being reset for host 0 channel 0.
(scsi0:0:6:0) Synchronous at 4.4 Mbyte/sec, offset 15.
SCSI host 0 abort (pid 7) timed out - resetting
SCSI bus is being reset for host 0 channel 0.
(scsi0:0:6:0) Synchronous at 4.4 Mbyte/sec, offset 15.
SCSI host 0 channel 0 reset (pid 7) timed out - trying harder
SCSI bus is being reset for host 0 channel 0.
(scsi0:0:6:0) Synchronous at 4.4 Mbyte/sec, offset 15.

For the record:
I'm running slackware linux 7.1 with kernel 2.2.17
and the cd burner is a 'taiyo yuden ew-50'

I tried to increase the CONFIG_AIC7XXX_RESET_DELAY to 20 but
that didn't help. Neiter does compiling in the kernel or as a module.

I hope someone has can help me,

Philip



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