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linux:cups [2017/01/11 11:58] – created niziaklinux:cups [2024/11/22 13:17] (current) – niziak
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 +====== CUPS ======
 +
 +====== Cups webinterface ======
 +[[http://localhost:631/]]
 +
 +By default it uses normal system users and their passwords (root for admin).
 +By default CUPS **@SYSTEM** group is mapped to system **lpadmin** group, so user should be added into **lpadmin** group.
 +
 +To create internal CUPS users:
 +<code bash>
 +lppaswd -g lpadmin -a username
 +</code>
 +and file **/etc/cups/passwd.md5** will be created/updated
 +
 +For more permissions look into **/etc/cups/cupsd.conf**
 +
 +====== cups-pdf ======
 +
 +<file | /etc/cups/cups-pdf.conf>
 +LogType 7
 +</file>
 +
 +Error: "failed to set file mode"
 +Issue not related to apparmor (not enabled).
 +
 +Solution:
 +  Error is generated by cups-pdf but is relative to ghostscript rights. Ghostscript seems to need full rights in its temp work dir.
 +  Setting "GSTmp /tmp" instead of "GSTmp /var/tmp" in /etc/cups/cups-pdf.conf solves the problem for me.
 +
 +
 +====== Brother DCP-7055W ======
 +
 +<code bash>
 +lpadmin -p DCP7055W -v lpd://192.168.179.1/binary_p1 -E -P /usr/share/cups/model/brother-DCP-7055W-cups-en.ppd
 +</code>
 +
 +
 ====== Samsung ML-1640 ====== ====== Samsung ML-1640 ======
 <code bash> <code bash>
-apt-get install splix+apt-get install printer-driver-splix
 </code> </code>
 +Connect USB printer, and XFCE Desktop will detect it and use driver automatically.
 +OR:
 In printer settings, add new network printer. Choose Samsung and ML-1640 model. In printer settings, add new network printer. Choose Samsung and ML-1640 model.
 Device URI: Device URI:
  <code>socket://192.168.1.3:9100</code>  <code>socket://192.168.1.3:9100</code>
 +
 +======  HP LaserJet Pro MFP M127fw ======
 +
 +<code bash>sudo apt-get install hplip-gui</code>
 +
 +New GUI application ''HPLIP Toolbox'' will be installed. 
 +  * Run app and add network printer using network discovery.
 +  * Let download plugin from Hp server
 +
 +===== Network scanner =====
 +
 +<code bash>
 +sudo apt-get install sane-utils
 +sudo apt-get install snmp-mibs-downloader
 +</code>
 +
 +<file | /etc/default/saned>
 +RUN=yes
 +</file>
 +
 +<file | /etc/sane.d/saned.conf>
 +192.168.0.0/22
 +</file>
 +
 +<code bash>service saned restart</code>
 +<code>
 +Failed to restart saned.service: Unit saned.service is masked.
 +</code>
 +Which is correct when systemd is used. Saned service is activated by ''saned.socket'' on TCP:6566
 +<code bash>systemctl enable saned.socket</code>
 +
 +Enable proper backend in /etc/sane.d/dll.conf
 +
 +<code bash>
 +scanimage -L
 +scanimage > test.ppm
 +</code>
 +
 +Problem is that remote saned clients has to known ''hpaio'' driver to use it. 
 +So it is not possible to use it on Android.
 +
 +<code>
 +Options specific to device `hpaio:/net/HP_LaserJet_Pro_MFP_M127fw?ip=192.168.1.107':
 +  Scan mode:
 +    --mode Lineart|Gray|Color [Lineart]
 +        Selects the scan mode (e.g., lineart, monochrome, or color).
 +    --resolution 75|100|150|200|300|600|1200dpi [75]
 +        Sets the resolution of the scanned image.
 +    --source Flatbed|ADF [Flatbed]
 +        Selects the scan source (such as a document-feeder).
 +  Advanced:
 +    --brightness -1000..1000 [0]
 +        Controls the brightness of the acquired image.
 +    --contrast -1000..1000 [0]
 +        Controls the contrast of the acquired image.
 +    --compression None|JPEG [JPEG]
 +        Selects the scanner compression method for faster scans, possibly at
 +        the expense of image quality.
 +    --jpeg-quality 0..100 [inactive]
 +        Sets the scanner JPEG compression factor. Larger numbers mean better
 +        compression, and smaller numbers mean better image quality.
 +  Geometry:
 +    -l 0..215.9mm [0]
 +        Top-left x position of scan area.
 +    -t 0..296.926mm [0]
 +        Top-left y position of scan area.
 +    -x 0..215.9mm [215.9]
 +        Width of scan-area.
 +    -y 0..296.926mm [296.926]
 +        Height of scan-area.
 +
 +</code>
 +
 +==== Issue: unable to load library libm.so  ====
 +Not possible to scan. Every software which is using ''sane'' timeouts with:
 +<code>
 +/hp-scan: common/utils.c 188: unable to load library libm.so: /usr/lib/x86_64-linux-gnu/libm.so: invalid ELF header
 +xsane: io/hpmud/jd.c 678: timeout read_channel sec=45 hp:/net/HP_LaserJet_Pro_MFP_M127fw?ip=192.168.1.107
 +xsane: http.c 189: timeout reading data sec_timeout=45
 +error: SANE: Error during device I/O (code=9)
 +</code>
 +
 +===== Sane web frontends =====
 +[[http://www.sane-project.org/sane-frontends.html]]
 +  * [[https://github.com/sbs20/scanserv]]
 +    * NodeJS based [[https://github.com/sbs20/scanservjs]]
 +  * [[https://sourceforge.net/projects/phpsane/]]
 +    * requires <code bash>apt-get install php-zip</code>
 +  * [[https://sourceforge.net/projects/sanewi/]]
 +
 +