Additional information:
I've just booted into VL6 Light on the same computer and here the Adaptec driver is loaded and sane-fine-scanner finds the scanner.
aha152x lines from dmesg:
Loading iSCSI transport class v2.0-870.
Loading Adaptec I2O RAID: Version 2.4 Build 5go
Detecting Adaptec I2O RAID controllers...
aha152x: processing commandline: ok
aha152x: BIOS test: passed, 1 controller(s) configured
aha152x: resetting bus...
aha152x0: vital data: rev=1, io=0x140 (0x140/0x140), irq=10, scsiid=7, reconnect=enabled, parity=enabled, synchronous=enabled, delay=1000, extended translation=disabled
aha152x0: trying software interrupt, ok.
scsi0 : Adaptec 152x SCSI driver; $Revision: 2.7 $
(scsi0:6:0) Synchronous Data Transfer Request was rejected
scsi 0:0:6:0: Scanner Scanner 600 1.80 PQ: 0 ANSI: 3 CCS
Adaptec aacraid driver 1.1-5[2456]-ms
aic94xx: Adaptec aic94xx SAS/SATA driver version 1.0.3 loaded
scsi: <fdomain> Detection failed (no card)
As you see, the scanner itself (Scanner 600) is identified. The lines I thought were signs of trouble in dmesg for VL6 Standard are not; they're the same in dmesg for VL6 Light. However, aha152x is not found and the scanner is not identified.
sane-find-scanner reports this in Light:
found SCSI scanner " Scanner 600 1.80" at /dev/sg0
# Your SCSI scanner was detected. It may or may not be supported by SANE. Try
# scanimage -L and read the backend's manpage.
So--
same computer, same SCSI card, same video driver (xorg's radeon), same scanner, same append in lilo.conf. Why isn't it working in Standard?
This is the second weird problem I have with Standard on this computer. I can't get Flash working with Opera 9.04. It doesn't see the plugin at all. Flash works fine with Opera in Light. I've tried just about everything in Standard: removed Opera completely and reinstalled the package; compared the settings and files in Light with those in Standard--they're the same; reinstalled Flash; renamed ~/.opera and had Opera create a new one. Opera works with Flash on my other VL6 Standard computers and with VL6 Light on this computer. I'm stumped.
--GrannyGeek