Hello, my scanner Mustek BearPaw 1200CU Plus II has a problem with default settings of gt68xx driver in SANE: the scanned image has a red hue (contains light red instead of white).
I've managed to compensate it manually by specifying manual afe settings in gt68xx.conf - could anyone confirm whether this issue is specific to my piece of HW or not? If not, could this adjustment be incorporated into the default settings? I would also suggest to add a simple HOWTO for tuning the hue to the web page describing the drivers (in this case http://www.meier-geinitz.de/sane/gt68xx-backend/#FIRMWARE ). It gets indexed by search engines and could help others with troubleshooting. Basically a slightly more commented excerpt of sane-gt68xx manpage could be enough (increase debug level note down the afe, put it into config and tweak) - currently it's quite hard to find a solution just by googling, one has to roll up the sleeves and dive into manpages/config files. My tweaked afe settings: afe 0x06 0x02 0x16 0x02 0x16 0x02 Default afe settings: afe 0x16 0x02 0x16 0x02 0x16 0x02 HW is detected by lsusb as: 055f:021b Mustek Systems, Inc. BearPaw 1200 CU Plus HW is detected by SANE as: USB scanner (vendor=0x055f, product=0x021b [USB Scanner], chip=GT-6816?) Output of simple-scan GUI with debug level set to 3: [gt68xx] SANE GT68xx backend version 1.0 build 84 from sane-backends 1.0.22 [gt68xx] attach: found Mustek flatbed scanner Bearpaw 1200 CU Plus at libusb:003:004 [gt68xx] get_id: vendor id=0x021B, product id=0x055F, DID=0x00010004, FID=0x0000 [gt68xx] gt68xx_afe_cis_auto: setting exposure reached limit [gt68xx] afe 0x16 0x02 0x16 0x02 0x16 0x02 [gt68xx] exposure 0x54 0xa2 0x6d [gt68xx] sane_get_parameters: pixels 2563x3531x256 Tested on Ubuntu 11.04 (sane-utils 1.0.22-2ubuntu1). Cheers, Jirka
