Hi Zoltan, we will leave this bug report at "incomplete" status in case someone else might have the same problem in the next little while. If not, it will be expired automatically. Take care and thanks again for taking the time to report. :) G
-- You received this bug notification because you are a member of Desktop Packages, which is subscribed to hplip in Ubuntu. https://bugs.launchpad.net/bugs/1424451 Title: Brightness setting unaffective when scanning with MFP M177fw Status in HPLIP: Incomplete Status in hplip package in Ubuntu: Incomplete Bug description: The scan results from almost all the scan programs (simple-scan, scanimage, hp-scan) are way too light, faded, and missing details when scanning with my MFP M177fw from Linux (Debian 7.8 x86), so I've tried to adjust brightness and contrast settings from the command line, like this: hp-scan -b -500 -c -10 or this: scanimage -d hpaio:/net/HP_Color_LaserJet_Pro_MFP_M177fw?ip=10.1.1.23 --mode Gray --resolution 300 --contrast 20 --brightness 500 -vvvvv Tried scanning in different modes (Gray and Color) and resolutions (150/300/600), and also compression modes. In color mode neither the contrast, nor the brightness settings had any effect (tried -1000, -500, 0, 500, 1000 and even far out of range). In gray mode the contrast worked, but not the brightness. With turning SANE and other debug switches on, it looks like the command is sent to SANE (even looks accepted), but it has no effect (see logs below). This might be a problem with the scanner or with the driver, I can't tell. This is my third HP MFP printer, and never had similar problems with hplip scanning. The output from hp-check is attached (latest hplip as of today, also latest available firmware for printer/scanner), and I can send sample images if necessary. (Showing the lack of difference) The output from hp-scan: HP Linux Imaging and Printing System (ver. 3.15.2) Scan Utility ver. 2.2 Copyright (c) 2001-15 Hewlett-Packard Development Company, LP This software comes with ABSOLUTELY NO WARRANTY. This is free software, and you are welcome to distribute it under certain conditions. See COPYING file for more details. hp-scan[26965]: debug: getDeviceUri(None, None, ['hpaio'], {'scan-type': (<built-in function gt>, 0)}, , True) hp-scan[26965]: debug: Mode=0 hp-scan[26965]: debug: Cache miss: hp_color_laserjet_pro_mfp_m177fw hp-scan[26965]: debug: Reading file: /usr/share/hplip/data/models/models.dat hp-scan[26965]: debug: Searching for section [hp_color_laserjet_pro_mfp_m177fw] in file /usr/share/hplip/data/models/models.dat hp-scan[26965]: debug: Found section [hp_color_laserjet_pro_mfp_m177fw] in file /usr/share/hplip/data/models/models.dat hp-scan[26965]: debug: {'hpaio:/net/HP_Color_LaserJet_Pro_MFP_M177fw?ip=10.1.1.23': ['lucky', 'lucky-color']} Using device: hpaio:/net/HP_Color_LaserJet_Pro_MFP_M177fw?ip=10.1.1.23 warning: No destinations specified. Adding 'file' destination by default. Using device hpaio:/net/HP_Color_LaserJet_Pro_MFP_M177fw?ip=10.1.1.23 Opening connection to device... hp-scan[26965]: debug: Supported source Options: ['Flatbed', 'ADF'] size=2 hp-scan[26965]: debug: Device supported resolutions [75, 100, 150, 200, 300, 600, 1200] Resolution: 300dpi Mode: gray Compression: JPEG Contrast: 10 Brightness: -1000 Scan area (mm): Top left (x,y): (0.000000mm, 0.000000mm) Bottom right (x,y): (215.899994mm, 296.925995mm) Width: 215.899994mm Height: 296.925995mm Destination(s): file Output file: hp-scan[26965]: debug: Supported modes: ['lineart', 'gray', 'color'] size=3 warning: File destination enabled with no output file specified. Setting output format to PNG for greyscale mode. warning: Defaulting to '/fhome/zpeller/hpscan010.png'. Warming up... Scanning... hp-scan[26965]: debug: expected_bytes = 8936794 hp-scan[26965]: debug: format=0 hp-scan[26965]: debug: Expecting to read 8.5 MB from scanner. hp-scan[26965]: debug: format_name=gray hp-scan[26965]: debug: last_frame=1 hp-scan[26965]: debug: ppl=2549 hp-scan[26965]: debug: lines=3506 hp-scan[26965]: debug: depth=8 hp-scan[26965]: debug: bpl=2549 hp-scan[26965]: debug: byte_format=RGBA hp-scan[26965]: debug: pad_bytes=0 hp-scan[26965]: debug: Gray Read 2549 bytes hp-scan[26965]: debug: Gray Read 5098 bytes ... hp-scan[26965]: debug: Gray Read 8934245 bytes hp-scan[26965]: debug: Gray Read 8936794 bytes hp-scan[26965]: debug: Scan thread exiting... Read 8.5 MB from scanner. hp-scan[26965]: debug: PPL=2549 lines=3506 depth=8 BPL=2549 pad=0 total_read=8936794 total_write=35747176 Closing device. Outputting to destination 'file': Saving to file /fhome/zpeller/hpscan010.png Done. To manage notifications about this bug go to: https://bugs.launchpad.net/hplip/+bug/1424451/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
