Here is some information about this question. If you need more please advice. I can put longer logs at website.
# uname -a Linux ID-118939.user.uni-berlin.de 2.2.17-14 #1 Mon Feb 5 18:20:11 EST 2001 i586 unknown # cat /proc/bus/usb/devices T: Bus=01 Lev=00 Prnt=00 Port=00 Cnt=00 Dev#= 1 Spd=12 MxCh= 2 B: Alloc= 0/900 us ( 0%), #Int= 0, #Iso= 0 D: Ver= 1.00 Cls=09(hub ) Sub=00 Prot=00 MxPS= 8 #Cfgs= 1 P: Vendor=0000 ProdID=0000 Rev= 0.00 S: Product=USB UHCI Root Hub S: SerialNumber=d400 C:* #Ifs= 1 Cfg#= 1 Atr=40 MxPwr= 0mA I: If#= 0 Alt= 0 #EPs= 1 Cls=09(hub ) Sub=00 Prot=00 Driver=hub E: Ad=81(I) Atr=03(Int.) MxPS= 8 Ivl=255ms T: Bus=01 Lev=01 Prnt=01 Port=00 Cnt=01 Dev#= 2 Spd=12 MxCh= 0 D: Ver= 1.10 Cls=ff(vend.) Sub=00 Prot=ff MxPS= 8 #Cfgs= 1 P: Vendor=04a9 ProdID=220d Rev= 1.00 S: Manufacturer=Canon S: Product=CanoScan C:* #Ifs= 1 Cfg#= 1 Atr=a0 MxPwr=500mA I: If#= 0 Alt= 0 #EPs= 3 Cls=ff(vend.) Sub=00 Prot=ff Driver=(none) E: Ad=81(I) Atr=03(Int.) MxPS= 1 Ivl= 16ms E: Ad=82(I) Atr=02(Bulk) MxPS= 64 Ivl= 0ms E: Ad=03(O) Atr=02(Bulk) MxPS= 64 Ivl= 0ms # scanimage -L device `plustek:libusb:001:002' is a Canon N670U/N676U/LiDE20 USB flatbed scanner # scanimage --version scanimage (sane-backends) 1.0.15; backend version 1.0.15 On Sun, 20 Feb 2005, Kenneth Kurkio wrote: > Please see this test scan: > > http://kotisivu.mtv3.fi/kkur/fiat.jpg > > I have used Canon Lide 20 scanner. Left side of the scan is noticeably > brighter than right side. The Fiat logo at the middle should be completely > visible. > > I have compiled Sane from source. What is wrong with my system? > >
