Package: lxqt
Version: 29
Severity: normal
Tags: a11y

Dear Maintainer,

*** Reporter, please consider answering these questions, where appropriate ***

The issue appeared from the beginning, right after the fresh installations of 
Debian 10.3 and 10.4 likewise with LXQt.

I have prepared a USB memory stick with two partitions shown as sdb1 and sdb4.
(The problem also affects at least one other similar USB-disk.)
The former partition sdb1 is just plain ext2, the latter is LUKS encrypted dos 
or ext2 file system
(I tried both file systems, both yield the hang, as I would expect, because 
before decryption the filesystem should be unknown to LXQt).
Note: When at earlier times, sdb4 carried just a plain ext2, the bug did not 
appear, so the memory stick appears physically undamaged.

The commands to create the encrypted drive were on the root command line (4 
being the alias for /dev/dm-0)
/sbin/cryptsetup luksFormat /dev/sdb4
/sbin/cryptsetup open /dev/sdb4 4
/sbin/mkdosfs -n SDIG4 /dev/dm-0
/sbin/cryptsetup close 4

Note that in the same session, directly after creation of the encrypted 
partition, unplugging and re-plugging the device did work fine and LXQt would 
properly ask for password and mount the encrypted partition as expected.

The bug, however, shows after a re-start of the computer. In this case, when I 
plug in the device, a Mount dialog comes up, but is immediately frozen (see 
attached unresponsive dialog screenshot). When I switch desktops hence and 
forth, the hanging dialog window keeps the background from the other desktop, 
i.e. does not refresh with its own content (see attached black dialog 
screenshot).

I can close the dialog window (accepting the warning "This window might be busy 
and is not responding. Do you want to terminate the application?"), and the 
LXQt desktop will grey out, leaving only the panel and my active windows, but 
no desktop icons.

When I log out and log in again, I can repeat the freeze by plugging in the 
device again.

--- WORK-AROUND ---

When the device with the encrypted partition is connected, I can still 
explicitly mount the volume from the root command line:
/sbin/cryptsetup open /dev/sdb4 4
This subsequently triggers a dialog asking for the root password and then 
mounts the device.

*** End of the template - remove these template lines ***


-- System Information:
Debian Release: 10.4
  APT prefers stable-updates
  APT policy: (500, 'stable-updates'), (500, 'stable')
Architecture: i386 (i686)

Kernel: Linux 4.19.0-9-686 (SMP w/2 CPU cores)
Locale: LANG=en_GB.UTF-8, LC_CTYPE=en_GB.UTF-8 (charmap=UTF-8), 
LANGUAGE=en_GB:en (charmap=UTF-8)
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages lxqt depends on:
ii  featherpad                             0.9.4-2
ii  lximage-qt                             0.14.1-1
ii  lxqt-about                             0.14.1-1
ii  lxqt-admin                             0.14.1-1
ii  lxqt-branding-debian [lxqt-branding]   0.14.0.3
ii  lxqt-core                              29
ii  lxqt-openssh-askpass                   0.14.1-1
ii  lxqt-powermanagement                   0.14.1-1
ii  lxqt-sudo                              0.14.1-2
ii  openbox [x-window-manager]             3.6.1-8
ii  pavucontrol                            3.0-4
ii  pavucontrol-qt                         0.14.1-1
ii  qlipper                                1:5.1.2-1
ii  qps                                    1.10.20-1
ii  qterminal                              0.14.1-1
ii  qttranslations5-l10n                   5.11.3-2
ii  sddm-theme-debian-elarun [sddm-theme]  0.18.0-1
ii  sddm-theme-debian-maui [sddm-theme]    0.18.0-1
ii  xarchiver                              1:0.5.4.14-1
ii  xfwm4 [x-window-manager]               4.12.5-1

Versions of packages lxqt recommends:
ii  audacious                  3.10.1-1
ii  cmst                       2019.01.13-1
ii  feathernotes               0.4.6-1
ii  firefox-esr [www-browser]  68.10.0esr-1~deb10u1
ii  gucharmap                  1:11.0.3-3
ii  lynx [www-browser]         2.8.9rel.1-3
ii  meteo-qt                   1.0.0-1
ii  network-manager-gnome      1.8.20-1.1
pn  preload                    <none>
ii  qpdfview                   0.4.17~beta1+git20180709-2
ii  quassel                    1:0.13.1-1+deb10u2
ii  screengrab                 1.101-1
ii  smplayer                   18.10.0~ds0-1
ii  smtube                     18.3.0-1
ii  thunderbird                1:68.10.0-1~deb10u1

Versions of packages lxqt suggests:
pn  calibre            <none>
pn  compton-conf       <none>
pn  juffed             <none>
pn  nomacs             <none>
pn  obconf-qt          <none>
pn  qt5-style-kvantum  <none>
pn  qtpass             <none>
pn  shutter            <none>
pn  vokoscreen         <none>

-- no debconf information

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