Okular, Qpdfview and other KDE applications are not able to print in Greyscale, because the selection is not obeyed, resulting in colour print output. The available printer options under the print menu do not provide all the parameters listed under lpoptions -l. Gtk based applications like LibreOffice do not have this problem. Tested with: kde-apps/okular-16.12.3 app-text/qpdfview-0.4.16 dev-qt/qtprintsupport-5.6.2 kde-apps/print-manager-16.12.3 app-admin/system-config-printer-1.4.8 and app-admin/system-config-printer-1.4.8 dev-qt/qtprintsupport-5.7.1 kde-apps/okular-17.04.2 kde-apps/print-manager-17.04.2 on two different systems and 3 different inkjet and laser printers, but the problem does not seem to be printer specific. emerge --info provided below: ============================ # emerge --info dev-qt/qtprintsupport Portage 2.3.5 (python 3.4.5-final-0, default/linux/amd64/13.0/desktop/plasma, gcc-5.4.0, glibc-2.23-r3, 4.9.16-gentoo x86_64) ================================================================= System Settings ================================================================= System uname: Linux-4.9.16-gentoo-x86_64-Intel-R-_Core-TM-_i7_CPU_Q_720_@_1.60GHz-with-gentoo-2.3 KiB Mem: 4033144 total, 1844000 free KiB Swap: 4200960 total, 4200960 free Timestamp of repository gentoo: Sun, 11 Jun 2017 08:45:01 +0000 sh bash 4.3_p48-r1 ld GNU ld (Gentoo 2.26.1 p1.0) 2.26.1 app-shells/bash: 4.3_p48-r1::gentoo dev-lang/perl: 5.24.1-r2::gentoo dev-lang/python: 2.7.12::gentoo, 3.4.5::gentoo dev-util/cmake: 3.7.2::gentoo dev-util/pkgconfig: 0.28-r2::gentoo sys-apps/baselayout: 2.3::gentoo sys-apps/openrc: 0.26.3::gentoo sys-apps/sandbox: 2.10-r3::gentoo sys-devel/autoconf: 2.13::gentoo, 2.69::gentoo sys-devel/automake: 1.15-r2::gentoo sys-devel/binutils: 2.26.1::gentoo sys-devel/gcc: 5.4.0-r3::gentoo sys-devel/gcc-config: 1.7.3::gentoo sys-devel/libtool: 2.4.6-r3::gentoo sys-devel/make: 4.2.1::gentoo sys-kernel/linux-headers: 4.4::gentoo (virtual/os-headers) sys-libs/glibc: 2.23-r3::gentoo Repositories: gentoo location: /usr/portage sync-type: rsync sync-uri: rsync://10.10.10.2/gentoo-portage priority: -1000 sync-rsync-extra-opts: --exclude-from=/etc/portage/rsync_excludes bar location: /var/lib/layman/bar masters: gentoo priority: 50 brother-overlay location: /var/lib/layman/brother-overlay masters: gentoo priority: 50 psix-overlay location: /var/lib/layman/psix-overlay masters: gentoo priority: 50 local location: /usr/local/portage masters: gentoo priority: 100 ACCEPT_KEYWORDS="amd64" ACCEPT_LICENSE="* -@EULA" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-march=native -O2 -pipe" CHOST="x86_64-pc-linux-gnu" CONFIG_PROTECT="/etc /usr/lib64/libreoffice/program/sofficerc /usr/share/config /usr/share/gnupg/qualified.txt" CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/dconf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo" CXXFLAGS="-march=native -O2 -pipe" DISTDIR="/usr/portage/distfiles" EMERGE_DEFAULT_OPTS="--quiet-build=n" FCFLAGS="-O2 -pipe" FEATURES="assume-digests binpkg-logs config-protect-if-modified distlocks ebuild-locks fail-clean fixlafiles merge-sync news parallel-fetch preserve-libs protect-owned sandbox sfperms splitdebug strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr" FFLAGS="-O2 -pipe" GENTOO_MIRRORS="http://10.10.10.2:1024/ http://mirror.qubenet.net/mirror/gentoo/ rsync://rsync.mirrorservice.org/distfiles.gentoo.org/ http://ftp.snt.utwente.nl/pub/os/linux/gentoo ftp://ftp.snt.utwente.nl/pub/os/linux/gentoo http://www.mirrorservice.org/sites/distfiles.gentoo.org/" LANG="en_GB.UTF-8" LDFLAGS="-Wl,-O1 -Wl,--as-needed" MAKEOPTS="-j5 -l12.8" PKGDIR="/usr/portage/packages" PORTAGE_CONFIGROOT="/" PORTAGE_RSYNC_EXTRA_OPTS="--exclude-from=/etc/portage/rsync_excludes" PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --omit-dir-times --compress --force --whole-file --delete --stats --human-readable --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages --exclude=/.git" PORTAGE_TMPDIR="/var/tmp" USE="X a52 aac aacplus acl acpi alsa amd64 amr apng avx berkdb bluetooth branding bzip2 cairo cdda cddb cdparanoia cdr chroot cli consolekit cracklib crypt css cups cxx dbus declarative dell dri dts dvd dvdr emboss encode exif faac fam ffmpeg firefox flac fortran fts3 gdbm gif glamor gpm hddtemp hpijs iconv imagemagick ipv6 irda jpeg kde kipi kwallet lcms ldap libnotify libv4l2 live lm_sensors logrotate mad mmx mmxext mng modules mp3 mp4 mpeg multilib ncurses network-cron new-hpcups nls nodrm nptl nsplugin obex ogg opengl openmp opus pam pango pcre pdf phonon plasma png policykit popcnt ppds pulseaudio qml qt3support qt4 qt5 quicktime rdesktop readline redland rtmp sdl seccomp semantic-desktop session shout smime spell sqlite sse sse2 sse4_1 sse4_2 ssl ssse3 startup-notification svg tcpd tiff truetype udev udisks unicode upower usb v4l2 vaapi vdpau vnc vorbis vpx widgets win32codecs wps wxwidgets x264 xattr xcb xcomposite xinerama xml xscreensaver xv xvid xvmc zip zlib" ABI_X86="64" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" APACHE2_MODULES="authn_core authz_core socache_shmcb unixd actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache cgi cgid dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" CALLIGRA_FEATURES="kexi words flow plan sheets stage tables krita karbon braindump author" COLLECTD_PLUGINS="df interface irq load memory rrdtool swap syslog" CPU_FLAGS_X86="mmx mmxext popcnt sse sse2 sse3 sse4_1 sse4_2 ssse3" ELIBC="glibc" GPSD_PROTOCOLS="ashtech aivdm earthmate evermore fv18 garmin garmintxt gpsclock isync itrax mtk3301 nmea ntrip navcom oceanserver oldstyle oncore rtcm104v2 rtcm104v3 sirf skytraq superstar2 timing tsip tripmate tnt ublox ubx" INPUT_DEVICES="synaptics evdev" KERNEL="linux" L10N="en-GB" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer pdfimport" LINGUAS="en_GB en" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-6" PYTHON_SINGLE_TARGET="python3_4" PYTHON_TARGETS="python2_7 python3_4" RUBY_TARGETS="ruby21 ruby22" USERLAND="GNU" VIDEO_CARDS="radeon r600" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account" Unset: CC, CPPFLAGS, CTARGET, CXX, INSTALL_MASK, LC_ALL, PORTAGE_BUNZIP2_COMMAND, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, USE_PYTHON ================================================================= Package Settings ================================================================= dev-qt/qtprintsupport-5.6.2::gentoo was built with the following: USE="cups -debug -gles2 -test" ABI_X86="64" -- Regards, Mick
There's nothing we can do about this in gentoo. It's an upstream issue that can only be fixed there, as I imagine it would require non-trivial code changes.
