I'm not _totally_ sure this is a bug, but it is unexpected and I thought it might be worth reporting. It seems that applications trying to write data to standard output running from a 'konsole' terminal will stall if I switch to another user. (Change screens.) As a demonstration I ran the following command in konsole: ( while true; do date; dd if=/dev/urandom bs=1k count=1k | od; sleep 1; done ) | tee /tmp/logfile I left it running for about 5 seconds, than switched to another user for about 10-15 seconds, than back to the original user. Now the output of 'grep CEST /tmp/logfile' is: Sat Aug 26 22:07:16 CEST 2017 Sat Aug 26 22:07:17 CEST 2017 Sat Aug 26 22:07:18 CEST 2017 Sat Aug 26 22:07:20 CEST 2017 Sat Aug 26 22:07:21 CEST 2017 Sat Aug 26 22:07:22 CEST 2017 Sat Aug 26 22:07:24 CEST 2017 Sat Aug 26 22:07:38 CEST 2017 Sat Aug 26 22:07:39 CEST 2017 Sat Aug 26 22:07:41 CEST 2017 Sat Aug 26 22:07:42 CEST 2017 Sat Aug 26 22:07:43 CEST 2017 It can be clearly seen that between 22:07:24 and 22:07:38, the 'date' command was not executed. (I assume that The 'dd' command was waiting for I/O as Konsole was not processing writes to stdout.) I think this is a bug in Konsole because I don't experience this issue with xfce4-terminal.
Output of emerge --info (not sure if relevant): Portage 2.3.6 (python 3.4.5-final-0, default/linux/amd64/13.0/desktop, gcc-5.4.0, glibc-2.23-r4, 4.12.5-gentoo x86_64) ================================================================= System uname: Linux-4.12.5-gentoo-x86_64-Intel-R-_Xeon-R-_CPU_E5-2643_0_@_3.30GHz-with-gentoo-2.3 KiB Mem: 16335896 total, 478336 free KiB Swap: 0 total, 0 free Timestamp of repository gentoo: Sat, 26 Aug 2017 08:30:01 +0000 sh bash 4.3_p48-r1 ld GNU ld (Gentoo 2.28 p1.2) 2.28 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: 0.28::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: 2.28-r2::gentoo, 2.28.1::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-r4::gentoo Repositories: gentoo location: /usr/portage sync-type: rsync sync-uri: rsync://rsync.gentoo.org/gentoo-portage priority: -1000 localrepo location: /usr/local/portage masters: gentoo ACCEPT_KEYWORDS="amd64" ACCEPT_LICENSE="* -@EULA" CBUILD="x86_64-pc-linux-gnu" CFLAGS="-O2 -pipe -march=native -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/php/apache2-php5.6/ext-active/ /etc/php/apache2-php7.0/ext-active/ /etc/php/cgi-php5.6/ext-active/ /etc/php/cgi-php7.0/ext-active/ /etc/php/cli-php5.6/ext-active/ /etc/php/cli-php7.0/ext-active/ /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo" CXXFLAGS="-O2 -pipe -march=native -pipe" DISTDIR="/usr/portage/distfiles" EMERGE_DEFAULT_OPTS="--autounmask-backtrack=y --backtrack=1000" FCFLAGS="-O2 -pipe" FEATURES="assume-digests binpkg-logs config-protect-if-modified distlocks ebuild-locks fixlafiles merge-sync news parallel-fetch preserve-libs protect-owned sandbox sfperms strict unknown-features-warn unmerge-logs unmerge-orphans userfetch userpriv usersandbox usersync xattr" FFLAGS="-O2 -pipe" GENTOO_MIRRORS="http://mirror.eu.oneandone.net/linux/distributions/gentoo/gentoo/ rsync://mirror.eu.oneandone.net/gentoo/ ftp://ftp.wh2.tu-dresden.de/pub/mirrors/gentoo ftp://mirror.netcologne.de/gentoo/ rsync://mirror.netcologne.de/gentoo/ http://mirror.netcologne.de/gentoo/ http://linux.rz.ruhr-uni-bochum.de/download/gentoo-mirror/ http://ftp.halifax.rwth-aachen.de/gentoo/ ftp://ftp.halifax.rwth-aachen.de/gentoo/ rsync://ftp.halifax.rwth-aachen.de/gentoo/ ftp://sunsite.informatik.rwth-aachen.de/pub/Linux/gentoo ftp://ftp.uni-erlangen.de/pub/mirrors/gentoo http://ftp.uni-erlangen.de/pub/mirrors/gentoo ftp://ftp-stud.hs-esslingen.de/pub/Mirrors/gentoo/ http://ftp-stud.hs-esslingen.de/pub/Mirrors/gentoo/ rsync://ftp-stud.hs-esslingen.de/gentoo/" LANG="en_IN.utf8" LDFLAGS="-Wl,-O1 -Wl,--as-needed" MAKEOPTS="-j8" PKGDIR="/usr/portage/packages" PORTAGE_CONFIGROOT="/" 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 acl acpi alsa amd64 berkdb bindist bluetooth branding bzip2 cairo cdda cdr cli consolekit cracklib crypt cups cxx dbus dri dts dvd dvdr emboss encode exif fam firefox flac fortran gdbm gif glamor gpm gtk iconv ipv6 jpeg lcms ldap libnotify mad mng modules mp3 mp4 mpeg multilib ncurses nls nptl ogg opengl openmp pam pango pcre pdf png policykit ppds pulseaudio qt3support qt4 readline sdl seccomp session spell ssl startup-notification svg tcpd tiff truetype udev udisks unicode upower usb vorbis wxwidgets x264 xattr xcb xml xv xvid 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 sse sse2" 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" GRUB_PLATFORMS="efi-64" INPUT_DEVICES="libinput keyboard mouse" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" LIBREOFFICE_EXTENSIONS="presenter-console presenter-minimizer" OFFICE_IMPLEMENTATION="libreoffice" PHP_TARGETS="php5-6 php5-6 php7-0" POSTGRES_TARGETS="postgres9_5" PYTHON_SINGLE_TARGET="python3_4" PYTHON_TARGETS="python2_7 python3_4" RUBY_TARGETS="ruby22" USERLAND="GNU" VIDEO_CARDS="amdgpu fbdev intel nouveau radeon radeonsi vesa dummy v4l" 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, PORTAGE_RSYNC_EXTRA_OPTS
If this is still happening wiht 18.08.1, could you contact upstream about it?
(In reply to Andreas Sturmlechner from comment #2) > If this is still happening wiht 18.08.1, could you contact upstream about it? I can still reproduce this in konsole 18.08.1. I now reported it at https://bugs.kde.org/show_bug.cgi?id=398865.
Thanks for raising this upstream.
Please continue following this upstream instead.
