UMAX Astra 4100
<device descriptor of 0x0461/0x038c at 002:003 (Primax USB Scanner)> bLength 18 bDescriptorType 1 bcdUSB 1.10 bDeviceClass 255 bDeviceSubClass 255 bDeviceProtocol 255 bMaxPacketSize0 8 idVendor 0x0461 idProduct 0x038C bcdDevice 1.00 iManufacturer 1 (Primax) iProduct 2 (USB Scanner) iSerialNumber 0 () bNumConfigurations 1 <configuration 0> bLength 9 bDescriptorType 2 wTotalLength 39 bNumInterfaces 1 bConfigurationValue 1 iConfiguration 0 () bmAttributes 224 (Self-poweredRemote Wakeup) MaxPower 48 mA <interface 0> <altsetting 0> bLength 9 bDescriptorType 4 bInterfaceNumber 0 bAlternateSetting 0 bNumEndpoints 3 bInterfaceClass 255 bInterfaceSubClass 255 bInterfaceProtocol 255 iInterface 0 () <endpoint 0> bLength 7 bDescriptorType 5 bEndpointAddress 0x81 (in 0x01) bmAttributes 2 (bulk) wMaxPacketSize 64 bInterval 0 ms bRefresh 0 bSynchAddress 0 <endpoint 1> bLength 7 bDescriptorType 5 bEndpointAddress 0x02 (out 0x02) bmAttributes 2 (bulk) wMaxPacketSize 64 bInterval 0 ms bRefresh 0 bSynchAddress 0 <endpoint 2> bLength 7 bDescriptorType 5 bEndpointAddress 0x83 (in 0x03) bmAttributes 3 (interrupt) wMaxPacketSize 1 bInterval 8 ms bRefresh 0 bSynchAddress 0 <trying to find out which USB chip is used> checking for GT-6801 ... this is not a GT-6801 (bNumEndpoints = 3) checking for GT-6816 ... this is not a GT-6816 (bDeviceClass = 255, bInterfaceClass = 255) checking for GT-8911 ... this is not a GT-8911 (check 1, bDeviceClass = 255, bInterfaceClass = 255) checking for MA-1017 ... this is not a MA-1017 (bDeviceClass = 255, bInterfaceClass = 255) checking for MA-1015 ... this is not a MA-1015 (bcdUSB = 0x110) checking for MA-1509 ... this is not a MA-1509 (bEndpointAddress = 0x2, bmAttributes = 0x2, wMaxPacketSize = 0x40) checking for LM983[1,2,3] ... this is not a LM983x (bDeviceSubClass = 0xff) checking for GL646 ... this is not a GL646 (bDeviceClass = 255, bInterfaceClass = 255) checking for GL646_HP ... <This USB chip looks like a GL646_HP (result from sane-backends 1.0.17-cvs)> found USB scanner (vendor=0x0461 [Primax], product=0x038c [USB Scanner], chip=GL646_HP) at libusb:002:003
If anything is wrong or missing on this page please file a bug report or use the the form for adding an unsupported device.
If you own an unsupported scanner, please send as much information as possible. Especially the output of sane-find-scanner -v -v and/or cat /proc/scsi/scsi (for SCSI scanners) or cat /proc/bus/usb/devices (for USB scanners) can help. If you dare to open the scanner, have a look at the text that's printed on the chips. That may help to identify the chipset. If you know that the scanner is similar to another one (e.g. supported by the same Windows driver), please also mention this fact.
Are you a manufacturer or vendor of scanners and one of your scanners is not supported by SANE yet? In this case please have a look at our information for manufacturers.