Bug#1111511: /usr/bin/systemctl: systemctl: accesses the terminal wrong, blinking lines under GNU screen

[Thorsten Glaser]

Package: systemd
Version: 257.7-1
Severity: minor
File: /usr/bin/systemctl
X-Debbugs-Cc: tg at mirbsd.de

sudo systemctl list-units (or sudo env LC_ALL=C systemctl list-units)
randomly shows some lines underlined (in a bare xterm + ssh) or
underlined-and-blinking (if I also start GNU screen either inside
or outside the ssh).

TERM=xterm or screen, respectively.

e.g. sys-subsystem-net-devices-eth0.device is in normal colour and
not underlined and blinking while sys-subsystem-net-devices-eth1.device
is but all other columns between these two are identical.

(This is a test VM, starting out as bookworm nocloud image but
upgraded to trixie and configured around a bit, and yes I did
include net.ifnames=0 and installed ifupdown.)

Others are proc-sys-fs-binfmt_misc.automount, tmp.mount,
systemd-ask-password-wall.path, session-3.scope (but again
not session-1.scope), …


-- Package-specific info:

-- System Information:
Debian Release: 13.0
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500, 'proposed-updates'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 6.12.38+deb13-amd64 (SMP w/1 CPU thread; PREEMPT)
Locale: LANG=C.UTF-8, LC_CTYPE=C.UTF-8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages systemd depends on:
ii  libacl1            2.3.2-2+b1
ii  libapparmor1       4.1.0-1
ii  libc6              2.41-12
ii  libmount1          2.41-5
ii  libpam0g           1.7.0-5
ii  libseccomp2        2.6.0-2
ii  libselinux1        3.8.1-1
ii  libssl3t64         3.5.1-1
ii  libsystemd-shared  257.7-1
ii  libsystemd0        257.7-1
ii  mount              2.41-5

Versions of packages systemd recommends:
ii  chrony [time-daemon]            4.6.1-3
ii  dbus [default-dbus-system-bus]  1.16.2-2
ii  linux-sysctl-defaults           4.12
ii  systemd-cryptsetup              257.7-1

Versions of packages systemd suggests:
pn  libtss2-tcti-device0  <none>
ii  polkitd               126-2
pn  systemd-boot          <none>
pn  systemd-container     <none>
pn  systemd-homed         <none>
pn  systemd-repart        <none>
ii  systemd-resolved      257.7-1
pn  systemd-userdbd       <none>

Versions of packages systemd is related to:
pn  dbus-user-session  <none>
pn  dracut             <none>
ii  initramfs-tools    0.148.3
pn  libnss-systemd     <none>
ii  libpam-systemd     257.7-1
ii  udev               257.7-1

-- debconf information: