Hi,
Indeed cantata did not change since last july, so the problem might rather be on the kde media player side. But I do not know which kde package is involved (and I got several upgrades during the last days)
Here is what I get in the apt logs (I removed texlive packages)
Install: libphonon4qt5-data:amd64 (4:4.11.1-3, automatic)
libevent-core-2.1-7:amd64 (2.1.11-stable-1, automatic)
libevent-pthreads-2.1-7:amd64 (2.1.11-stable-1, automatic)
pci.ids:amd64 (0.0~2019.11.10-2, automatic)
libevent-2.1-7:amd64 (2.1.11-stable-1, automatic)
libgit2-28:amd64 (0.28.3+dfsg.1-1, automatic)
Upgrade: libboost-python1.67.0:amd64 (1.67.0-13, 1.67.0-13+b1)
kstars-data:amd64 (5:3.0.0-1, 5:3.3.7-1)
mutt:amd64 (1.12.2-1, 1.12.2-2)
libldb2:amd64 (2:2.0.7-3, 2:2.0.7-3+b1)
libkf5texteditor5:amd64 (5.62.0-1, 5.62.0-1+b1)
librpmsign8:amd64 (4.14.2.1+dfsg1-1, 4.14.2.1+dfsg1-1+b1)
rpm2cpio:amd64 (4.14.2.1+dfsg1-1, 4.14.2.1+dfsg1-1+b1)
intel-microcode:amd64 (3.20191112.1, 3.20191113.1)
libsemanage1:amd64 (2.9-3, 2.9-3+b1)
python3-zope.interface:amd64 (4.6.0-1, 4.6.0-1+b1)
python3-pyxattr:amd64 (0.6.1-1, 0.6.1-1+b1)
libxml2-utils:amd64 (2.9.4+dfsg1-7+b3, 2.9.4+dfsg1-7+b4)
ktexteditor-katepart:amd64 (5.62.0-1, 5.62.0-1+b1)
libfstrm0:amd64 (0.6.0-1, 0.6.0-1+b1)
sntp:amd64 (1:4.2.8p13+dfsg-2, 1:4.2.8p13+dfsg-2+b1)
python-markupsafe:amd64 (1.1.0-1+b1, 1.1.0-1+b2)
python3-pycryptodome:amd64 (3.6.1-2+b1, 3.6.1-2+b2)
python3-setproctitle:amd64 (1.1.10-1+b2, 1.1.10-1+b3)
unbound-host:amd64 (1.9.4-2, 1.9.4-2+b1)
python-pycurl:amd64 (7.43.0.2-0.1+b1, 7.43.0.2-0.1+b2)
python3-xapian:amd64 (1.4.12-2, 1.4.12-2+b1)
libbrotli1:amd64 (1.0.7-5, 1.0.7-5+b1)
libsystemd0:amd64 (243-5, 243-7)
fwupd-amd64-signed:amd64 (1.3.3+2, 1.3.3+3)
librpmbuild8:amd64 (4.14.2.1+dfsg1-1, 4.14.2.1+dfsg1-1+b1)
python3-ldb:amd64 (2:2.0.7-3, 2:2.0.7-3+b1)
python-zope.interface:amd64 (4.6.0-1, 4.6.0-1+b1)
phonon4qt5:amd64 (4:4.11.1-1, 4:4.11.1-3)
python3-reportlab-accel:amd64 (3.5.31-1, 3.5.31-1+b1)
debugedit:amd64 (4.14.2.1+dfsg1-1, 4.14.2.1+dfsg1-1+b1)
chromium:amd64 (76.0.3809.100-1, 78.0.3904.97-1+b1)
python3-netifaces:amd64 (0.10.4-1+b1, 0.10.4-1+b2)
udev:amd64 (243-5, 243-7)
python3-levenshtein:amd64 (0.12.0-3+b1, 0.12.0-3+b2)
libpwquality-common:amd64 (1.4.1-3, 1.4.2-1)
python3-psutil:amd64 (5.5.1-1+b1, 5.5.1-1+b2)
python3-sip:amd64 (4.19.19+dfsg-2, 4.19.19+dfsg-2+b1)
iio-sensor-proxy:amd64 (2.4-2+b1, 2.8-1)
dkms:amd64 (2.8.1-2, 2.8.1-3)
tftpd:amd64 (0.17-22+b1, 0.17-23)
konversation:amd64 (1.7.5-2, 1.7.5-3)
libudev1:amd64 (243-5, 243-7)
rsyslog:amd64 (8.1910.0-2, 8.1911.0-1)
chromium-sandbox:amd64 (76.0.3809.100-1, 78.0.3904.97-1+b1)
libapparmor1:amd64 (2.13.3-6, 2.13.3-7)
python3-cups:amd64 (1.9.73-2+b1, 1.9.73-2+b2)
libqt5webenginewidgets5:amd64 (5.12.5+dfsg-3, 5.12.5+dfsg-3+b1)
konversation-data:amd64 (1.7.5-2, 1.7.5-3)
librpmio8:amd64 (4.14.2.1+dfsg1-1, 4.14.2.1+dfsg1-1+b1)
python3-renderpm:amd64 (3.5.31-1, 3.5.31-1+b1)
chromium-common:amd64 (76.0.3809.100-1, 78.0.3904.97-1+b1)
python3-pycurl:amd64 (7.43.0.2-0.1+b1, 7.43.0.2-0.1+b2)
python3-simplejson:amd64 (3.16.0-2, 3.16.0-2+b1)
python3-kiwisolver:amd64 (1.0.1-2+b1, 1.0.1-2+b2)
ntp:amd64 (1:4.2.8p13+dfsg-2, 1:4.2.8p13+dfsg-2+b1)
ntpdate:amd64 (1:4.2.8p13+dfsg-2, 1:4.2.8p13+dfsg-2+b1)
lldpd:amd64 (1.0.4-1+b2, 1.0.4-1+b3)
libunbound8:amd64 (1.9.4-2, 1.9.4-2+b1)
rpm-common:amd64 (4.14.2.1+dfsg1-1, 4.14.2.1+dfsg1-1+b1)
python-cffi-backend:amd64 (1.13.1-1, 1.13.1-1+b1)
psmisc:amd64 (23.2-1+b1, 23.3-1)
libboost-iostreams1.67.0:amd64 (1.67.0-13, 1.67.0-13+b1)
rpm:amd64 (4.14.2.1+dfsg1-1, 4.14.2.1+dfsg1-1+b1)
libprotobuf-lite17:amd64 (3.6.1.3-2, 3.6.1.3-2+b1)
libboost-chrono1.67.0:amd64 (1.67.0-13, 1.67.0-13+b1)
librpm8:amd64 (4.14.2.1+dfsg1-1, 4.14.2.1+dfsg1-1+b1)
whiptail:amd64 (0.52.21-3, 0.52.21-3+b1)
libnewt0.52:amd64 (0.52.21-3, 0.52.21-3+b1)
libopenbabel5:amd64 (2.4.1+dfsg-5.1, 2.4.1+dfsg-5.1+b1)
python3-cffi-backend:amd64 (1.13.1-1, 1.13.1-1+b1)
systemd-sysv:amd64 (243-5, 243-7)
python3-markupsafe:amd64 (1.1.0-1+b1, 1.1.0-1+b2)
libayatana-appindicator3-1:amd64 (0.5.3-4, 0.5.4-1)
libselinux1:amd64 (2.9-2+b2, 2.9-3+b1)
liblz4-1:amd64 (1.9.2-1, 1.9.2-2)
qml-module-qtwebengine:amd64 (5.12.5+dfsg-3, 5.12.5+dfsg-3+b1)
libpam-systemd:amd64 (243-5, 243-7)
systemd:amd64 (243-5, 243-7)
libboost-atomic1.67.0:amd64 (1.67.0-13, 1.67.0-13+b1)
libfwupd2:amd64 (1.3.3-2, 1.3.3-3)
libnss-systemd:amd64 (243-5, 243-7)
libphonon4qt5-4:amd64 (4:4.11.1-1, 4:4.11.1-3)
rubygems-integration:amd64 (1.12, 1.14)
libboost-locale1.67.0:amd64 (1.67.0-13, 1.67.0-13+b1)
libpwquality1:amd64 (1.4.1-3, 1.4.2-1)
libcap-ng0:amd64 (0.7.9-2.1, 0.7.9-2.1+b1)
libxml2:amd64 (2.9.4+dfsg1-7+b3, 2.9.4+dfsg1-7+b4)
python3-crypto:amd64 (2.6.1-12, 2.6.1-12+b1)
pciutils:amd64 (1:3.6.2-2, 1:3.6.2-5)
fwupd:amd64 (1.3.3-2, 1.3.3-3)
libqt5webenginecore5:amd64 (5.12.5+dfsg-3, 5.12.5+dfsg-3+b1)
kstars:amd64 (5:3.0.0-1+b1, 5:3.3.7-1)
apparmor:amd64 (2.13.3-6, 2.13.3-7)
libzstd1:amd64 (1.4.3+dfsg-1, 1.4.4+dfsg-1)
libqt5webengine5:amd64 (5.12.5+dfsg-3, 5.12.5+dfsg-3+b1)
tmux:amd64 (2.9a-3, 2.9a-3+b1)
python3-urwid:amd64 (2.0.1-2+b1, 2.0.1-2+b2)
libboost-filesystem1.67.0:amd64 (1.67.0-13, 1.67.0-13+b1)
libkf5texteditor-bin:amd64 (5.62.0-1, 5.62.0-1+b1)
libpci3:amd64 (1:3.6.2-2, 1:3.6.2-5)
libprotobuf17:amd64 (3.6.1.3-2, 3.6.1.3-2+b1)
python-cups:amd64 (1.9.73-2+b1, 1.9.73-2+b2)
libboost-date-time1.67.0:amd64 (1.67.0-13, 1.67.0-13+b1)
python3-selinux:amd64 (2.9-2+b2, 2.9-3+b1)
libboost-thread1.67.0:amd64 (1.67.0-13, 1.67.0-13+b1)
nfs-common:amd64 (1:1.3.4-2.5, 1:1.3.4-2.5+b1)
python3-apt:amd64 (1.8.4, 1.8.4+b1)
tmate:amd64 (2.3.0-1, 2.3.0-1+b1)
libboost-system1.67.0:amd64 (1.67.0-13, 1.67.0-13+b1)
Hi Erwan
Before latest upgrade, starting Cantata made the media player icon show on
kde system tray and media player shortcuts worked. It is not the case
anymore, however, If I start spotify client (which makes the media player
appear), then cantata then stops spotify, cantata then uses the media
player shortcuts or the icon, it works.
Can you provide a list of what was actually upgraded? It wasn't cantata, but
perhaps it was Qt or Plasma? /var/log/apt/history.log* might be useful to work
that out.
thanks
Stuart