My bad...didn't see "root"...
[root@localhost ~]# sane-find-scanner
# sane-find-scanner will now attempt to detect your scanner. If the
# result is different from what you expected, first make sure your
# scanner is powered up and properly connected to your computer.
# No SCSI scanners found. If you expected something different, make sure that
# you have loaded a kernel SCSI driver for your SCSI adapter.
found USB scanner (vendor=0x04a9 [Canon], product=0x2206 [CanoScan], chip=LM9832/3) at libusb:002:004
# Your USB scanner was (probably) detected. It may or may not be supported by
# SANE. Try scanimage -L and read the backend's manpage.
# Not checking for parallel port scanners.
# Most Scanners connected to the parallel port or other proprietary ports
# can't be detected by this program.
[root@localhost ~]# scanimage -L
device `plustek:libusb:002:004' is a Canon CanoScan N650U/N656U flatbed scanner
device `hpaio:/usb/OfficeJet_V40?serial=MY24GD43HNWN' is a Hewlett-Packard OfficeJet_V40 all-in-one
device `hpaio:/usb/OfficeJet_V40?serial=MY24GD43HNWN' is a Hewlett-Packard OfficeJet_V40 all-in-one
I remember the last few days installing some printer upgrades, in history in synaptic it said:
Upgraded the following packages:
hplip (3.11.10-2pclos2011) to 3.12.6-1pclos2012
hplip-common (3.11.10-2pclos2011) to 3.12.6-1pclos2012
hplip-devel (3.11.10-2pclos2011) to 3.12.6-1pclos2012
hplip-gui (3.11.10-2pclos2011) to 3.12.6-1pclos2012
hplip-hpijs (3.11.10-2pclos2011) to 3.12.6-1pclos2012
hplip-libs (3.11.10-2pclos2011) to 3.12.6-1pclos2012
libsane-hpaio (3.11.10-2pclos2011) to 3.12.6-1pclos2012
Today, I tried to print for the first time since that upgrade (I think) and nothing happened. I looked in PCC and did the troubleshooting and it said /usr/lib/cups/filter/gstoraster failed. I looked that up in forum and saw where Tex said upgrade ghostwriter to someone else with an Epson, and I don't see any upgrades for ghostwriter in synaptic. He also said to delete printer and reinstall. I went into PCC and deleted my printer and fax with the HP printer. Reinstalled the printer, but didn't know how to reinstall the HP fax...didn't see any options there.
I also noticed that previously, I had a gutenprint driver for this printer, I think the v5.2.7 simplified (not sure, deleted before writing down). Now with deleting and reinstalling, it has the hpcups 3.12.6 installed. When I check properties, it only has grayscale printing. After rebooting, I printed out a simple one-page document (.doc) ok in black and white. Checked print options, and only had grayscale to choose from. Tried printing an .ods one page file, and didn't print. The troubleshoot answer was gstoraster failed again.