With some of the November TW snapshots (or with kernel 4.3) my USB scanner is
not found anymore. I'm sure it worked on October and earlier.

Today I did some testing and scanimage -L finds it sometimes. Looks like every
second attempt fails.

root@probook: # Nov 15 14:07:46 probook kernel: usb 4-3: USB disconnect, device
number 2 
Nov 15 14:07:50 probook kernel: usb 4-3: new full-speed USB device number 3
using ohci-pci
Nov 15 14:07:50 probook kernel: usb 4-3: New USB device found, idVendor=06bd,
idProduct=2061
Nov 15 14:07:50 probook kernel: usb 4-3: New USB device strings: Mfr=1,
Product=2, SerialNumber=0
Nov 15 14:07:50 probook kernel: usb 4-3: Product: SNAPSCAN
Nov 15 14:07:50 probook kernel: usb 4-3: Manufacturer: AGFA 

root@probook: # scanimage -L
device `snapscan:libusb:004:003' is a AGFA SNAPSCAN flatbed scanner
root@probook: # scanimage -L

No scanners were identified. If you were expecting something different,
check that the scanner is plugged in, turned on and detected by the
sane-find-scanner tool (if appropriate). Please read the documentation
which came with this software (README, FAQ, manpages).
root@probook: # scanimage -L

No scanners were identified. If you were expecting something different,
check that the scanner is plugged in, turned on and detected by the
sane-find-scanner tool (if appropriate). Please read the documentation
which came with this software (README, FAQ, manpages).
root@probook: # 
root@probook: # Nov 15 14:15:38 probook kernel: usb 4-3: USB disconnect, device
number 3
Nov 15 14:15:41 probook kernel: usb 4-3: new full-speed USB device number 4
using ohci-pci
Nov 15 14:15:41 probook kernel: usb 4-3: New USB device found, idVendor=06bd,
idProduct=2061
Nov 15 14:15:41 probook kernel: usb 4-3: New USB device strings: Mfr=1,
Product=2, SerialNumber=0
Nov 15 14:15:41 probook kernel: usb 4-3: Product: SNAPSCAN
Nov 15 14:15:41 probook kernel: usb 4-3: Manufacturer: AGFA 
scanimage -L
device `snapscan:libusb:004:004' is a AGFA SNAPSCAN flatbed scanner
root@probook: # scanimage -L

No scanners were identified. If you were expecting something different,
check that the scanner is plugged in, turned on and detected by the
sane-find-scanner tool (if appropriate). Please read the documentation
which came with this software (README, FAQ, manpages).
root@probook: #