Hello, tried to collect some more details. Found that the failure started with the migration of these packages into testing:
libvte-2.91-0 libvte-2.91-common (0.60.0-2) The monitor worked before with 0.58.3-1. Kind regards, Bernhard
# Bullseye/testing amd64 qemu VM 2020-03-20 apt update apt dist-upgrade apt install systemd-coredump sddm xserver-xorg openbox xterm qemu-system export DISPLAY=:0 qemu-system-x86_64 (qemu,outside) sendkey ctrl-alt-2 # dpkg -l | grep 1:4.2-3 ii qemu-system-common 1:4.2-3 amd64 QEMU full system emulation binaries (common files) ii qemu-system-data 1:4.2-3 all QEMU full system emulation (data files) ii qemu-system-gui 1:4.2-3 amd64 QEMU full system emulation binaries (user interface and audio support) ii qemu-system-misc 1:4.2-3 amd64 QEMU full system emulation binaries (miscellaneous) ii qemu-system-x86 1:4.2-3 amd64 QEMU full system emulation binaries (x86) ii qemu-utils 1:4.2-3 amd64 QEMU utilities wget https://snapshot.debian.org/archive/debian/20191026T211939Z/pool/main/q/qemu/qemu-system-common_4.1-1%2Bb4_amd64.deb wget https://snapshot.debian.org/archive/debian/20190827T150849Z/pool/main/q/qemu/qemu-system-data_4.1-1_all.deb wget https://snapshot.debian.org/archive/debian/20191026T211939Z/pool/main/q/qemu/qemu-system-gui_4.1-1%2Bb4_amd64.deb wget https://snapshot.debian.org/archive/debian/20191026T211939Z/pool/main/q/qemu/qemu-system-misc_4.1-1%2Bb4_amd64.deb wget https://snapshot.debian.org/archive/debian/20191026T211939Z/pool/main/q/qemu/qemu-system-x86_4.1-1%2Bb4_amd64.deb wget https://snapshot.debian.org/archive/debian/20191026T211939Z/pool/main/q/qemu/qemu-utils_4.1-1%2Bb4_amd64.deb apt install libbluetooth3 dpkg -i *.deb -> already here wget https://snapshot.debian.org/archive/debian/20190528T165330Z/pool/main/q/qemu/qemu-system-common_3.1%2Bdfsg-8_amd64.deb wget https://snapshot.debian.org/archive/debian/20190528T101728Z/pool/main/q/qemu/qemu-system-data_3.1%2Bdfsg-8_all.deb wget https://snapshot.debian.org/archive/debian/20190528T165330Z/pool/main/q/qemu/qemu-system-gui_3.1%2Bdfsg-8_amd64.deb wget https://snapshot.debian.org/archive/debian/20190528T165330Z/pool/main/q/qemu/qemu-system-misc_3.1%2Bdfsg-8_amd64.deb wget https://snapshot.debian.org/archive/debian/20190528T165330Z/pool/main/q/qemu/qemu-system-x86_3.1%2Bdfsg-8_amd64.deb wget https://snapshot.debian.org/archive/debian/20190528T165330Z/pool/main/q/qemu/qemu-utils_3.1%2Bdfsg-8_amd64.deb wget https://snapshot.debian.org/archive/debian/20190831T031850Z/pool/main/n/nettle/libnettle6_3.5.1%2Breally3.4.1-1_amd64.deb wget https://snapshot.debian.org/archive/debian/20190924T204643Z/pool/main/b/brltty/libbrlapi0.6_5.6-11%2Bb1_amd64.deb wget https://snapshot.debian.org/archive/debian/20190109T223525Z/pool/main/v/virglrenderer/libvirglrenderer0_0.7.0-2_amd64.deb dpkg -i *.deb -> already here --> maybe caused by dependency ? ############# Buster/stable amd64 qemu VM 2020-03-20 sources.list # snapshot deb [check-valid-until=no] http://192.168.178.25:9999/debian-11-bullseye-snapshot.debian.org/ testing main #deb-src [check-valid-until=no] http://192.168.178.25:9999/debian-11-bullseye-snapshot.debian.org/ testing main #deb [check-valid-until=no] http://192.168.178.25:9999/debian-11-bullseye-debug-snapshot.debian.org/ testing-debug main approx: debian-11-bullseye-snapshot.debian.org https://snapshot.debian.org/archive/debian/20190801T000000Z/ apt update apt dist-upgrade apt install systemd-coredump sddm xserver-xorg openbox xterm qemu-system reboot 20190801T000000Z -> testing still works (qemu 1:3.1+dfsg-8) 20190901T000000Z -> testing still works (qemu 1:3.1+dfsg-8) 20191001T000000Z -> testing still works (qemu 1:4.1-1) 20191101T000000Z -> testing still works (qemu 1:4.1-1+b2) 20191201T000000Z -> testing still works (qemu 1:4.1-1+b4) 20200101T000000Z -> testing still works (qemu 1:4.1-3) 20200201T000000Z -> testing still works (qemu 1:4.2-1) 20200215T000000Z -> testing still works (qemu 1:4.2-1) 20200301T000000Z -> testing still works (qemu 1:4.2-3) 20200303T000000Z -> testing still works (qemu 1:4.2-3) 20200305T000000Z -> testing still works (qemu 1:4.2-3) 20200307T000000Z -> testing still works (qemu 1:4.2-3) 20200309T000000Z -> testing still works (qemu 1:4.2-3) 20200311T000000Z -> testing still works (qemu 1:4.2-3) 20200313T000000Z -> testing still works (qemu 1:4.2-3) 20200315T000000Z -> testing still works (qemu 1:4.2-3) 20200316T000000Z -> testing still works (qemu 1:4.2-3) apt install dconf-gsettings-backend dconf-service gpgv libdconf1 libicu63 libnspr4 logrotate ovmf python3-idna python3-pycurl qemu-efi-aarch64 qemu-efi-arm runit-helper -> still works apt install libvte-2.91-0 libvte-2.91-common -> starts to fails 20200317T000000Z -> testing fails (qemu 1:4.2-3)