Bug#951645: krdc: connect is sometimes unsuccessful and hang on login screen of remote computer

[Leos Pohl <leosenko@gmail.com>]

Package: krdc
Version: 4:18.04.1-1
Severity: important

Dear Maintainer,

In certain cases, connecting to remote W2008r2 or W2012r2 computers,
where the user has already been logged in, the krdc will hang on the
login screen, with nothing happening. The only solution is to log to
another computer, user native windows rdp to connect to the server with
the problem, logout the user and krdc will connect. Another solution is
to use rdesktop which has no problems. No obvious error or warning is 
logged on the server side.

-- System Information:
Debian Release: 10.3
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: amd64 (x86_64)

Kernel: Linux 4.19.0-8-amd64 (SMP w/4 CPU cores)
Kernel taint flags: TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=en_US.UTF-8, LC_CTYPE=en_US.UTF-8 (charmap=UTF-8), LANGUAGE= (charmap=UTF-8)
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages krdc depends on:
ii  libc6                 2.28-10
ii  libkf5bookmarks5      5.54.0-1
ii  libkf5completion5     5.54.0-1
ii  libkf5configcore5     5.54.0-1+deb10u1
ii  libkf5configgui5      5.54.0-1+deb10u1
ii  libkf5configwidgets5  5.54.0-1
ii  libkf5coreaddons5     5.54.0-1
ii  libkf5dnssd5          5.54.0-1
ii  libkf5i18n5           5.54.0-1
ii  libkf5kcmutils5       5.54.0-1
ii  libkf5notifications5  5.54.0-1
ii  libkf5notifyconfig5   5.54.0-1
ii  libkf5service-bin     5.54.0-1
ii  libkf5service5        5.54.0-1
ii  libkf5wallet-bin      5.54.0-1
ii  libkf5wallet5         5.54.0-1
ii  libkf5widgetsaddons5  5.54.0-1
ii  libkf5xmlgui5         5.54.0-1
ii  libqt5core5a          5.11.3+dfsg1-1+deb10u3
ii  libqt5gui5            5.11.3+dfsg1-1+deb10u3
ii  libqt5widgets5        5.11.3+dfsg1-1+deb10u3
ii  libqt5xml5            5.11.3+dfsg1-1+deb10u3
ii  libstdc++6            8.3.0-6
ii  libvncclient1         0.9.11+dfsg-1.3+deb10u2

Versions of packages krdc recommends:
ii  freerdp2-x11  2.0.0~git20190204.1.2693389a+dfsg1-1+deb10u1

Versions of packages krdc suggests:
ii  khelpcenter  4:18.04.0-1
pn  krfb         <none>

-- no debconf information