Red Hat Bugzilla – Bug 141732
sane hoses usb scanner
Last modified: 2007-11-30 17:10:56 EST
From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.7.2) Gecko/20040804 Galeon/1.3.17 Description of problem: After some config file tweaking and firmware downloading I managed to get scanimage -l to detect an attached usb scanner. However doing scanimage by itself fails with some USB errrors reported by the kernel. scanimage -L no longer works. Version-Release number of selected component (if applicable): sane-backends-1.0.14-6 How reproducible: Always Steps to Reproduce: 1. Boot computer. 2. Log in as root over ssh. 3. Do scanimage -L . Note that: device `snapscan:libusb:001:002' is a Acer FlatbedScanner22 flatbed scanner is returned. 4. Do scanimage > /dev/null Actual Results: The following output is produced: scanimage: open of device snapscan:libusb:001:002 failed: Error during device I/O Expected Results: Not sure. Never seen success. Additional info: The following is in dmesg: usb 1-1: bulk timeout on ep1in usb 1-1: usbfs: USBDEVFS_BULK failed ep 0x81 len 8 ret -110 usb 1-1: bulk timeout on ep2out usb 1-1: usbfs: USBDEVFS_BULK failed ep 0x2 len 6 ret -110 scanimage -L no longer finds anything. Unplugging and replugging the scanner moves it to a different address making scanimage -L work again, but repeating the steps results in the same problem. Doing rmmod ohci_hcd; modprobe ohci_hcd makes whichever socket the USB scanner went wrong on disappear for good.
Argh! Sorry for the long lines... This was done using the (Guided) bug entry form on the beta bugzilla.
There were some snapscan changes between SANE 1.0.14 and 1.0.15. Please try downloading and installing the sane-backends-1.0.15-7 package from here: ftp://download.fedora.redhat.com/pub/fedora/linux/core/development/i386/Fedora/RPMS Does that still give the same problem?
I might be a little while I am rebuilding the src.rpm against FC3 bits because I don't want drag the system too far away from a "standard" install (I think it wanted a newer pam and hotplug).
And after all that the rebuilt RPM still wanted a newer pam and hotplug. Hpmph, why didn't it warn me when I was installing the SRPM? Ah well, I shoved it on using --nodeps. Sigh. After upgrading /sbin/lsusb no longer detects the scanner at all. The following is in dmesg: ohci_hcd 0000:00:02.0: wakeup hub 1-0:1.0: Cannot enable port 2. Maybe the USB cable is bad? hub 1-0:1.0: Cannot enable port 2. Maybe the USB cable is bad? usb 1-2: new full speed USB device using address 4 usb 1-2: device not accepting address 4, error -110 usb 1-2: new full speed USB device using address 5 usb 1-2: device not accepting address 5, error -110
I figured I'd just double check whether I had the right firmware, you know, just in case... It turns out I had the wrong firmware. The scanner is an Acer/BenQ 4300U and is reported as: Bus 001 Device 017: ID 04a5:20b0 Acer Peripherals Inc. (now BenQ Corp.) S2W 3300U/4300U in lsusb. According to http://snapscan.sourceforge.net/ this means I should need the "u222v067.bin" firmware if you go via the "ID String" column. However, the USB ID column for 0x04a5, 0x20b0 says you need the "u176v046.bin". The USB ID column was the right one for me. Clearly this is a user created problem. I think the only way I could salvage a bit of dignity out of this bug is perhaps if I turn it into an enhancement request for SANE to warn users about uploading the wrong firmware...
Nice try. :-)
Dang! I'll get you next time Waugh! : )