Bug#954960: steam: new steam update crashes with fatal error: could not load steamui.so

[Ximin Luo]

Package: steam
Version: 1.0.0.61-2
Severity: important

Dear Maintainer,

The latest Steam client upgrade fails to run, crashing with a dialog box saying:

   Fatal Error: Failed to load steamui.so

There's no other details unfortunately.

Best,
Ximin

-- System Information:
Debian Release: bullseye/sid
  APT prefers testing
  APT policy: (990, 'testing'), (500, 'unstable-debug'), (500, 'testing-debug'), (500, 'stable'), (300, 'unstable'), (100, 'experimental'), (1, 'experimental-debug')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 5.4.0-4-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_GB.utf8, LC_CTYPE=en_GB.utf8 (charmap=UTF-8), LANGUAGE=en_GB:en (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages steam depends on:
ii  debconf [debconf-2.0]  1.5.73
ii  libc6                  2.30-2
ii  libgl1-mesa-dri        19.3.3-1
ii  libgl1-mesa-glx        19.3.3-1
ii  libgpg-error0          1.37-1
ii  libstdc++6             10-20200312-2
ii  libudev1               244.3-1
ii  libx11-6               2:1.6.9-2
ii  libxcb-dri3-0          1.13.1-5
ii  libxinerama1           2:1.1.4-2
ii  xz-utils               5.2.4-1+b1

Versions of packages steam recommends:
ii  ca-certificates                       20190110
ii  fontconfig                            2.13.1-2+b1
ii  fonts-liberation                      1:1.07.4-11
ii  gnome-terminal [x-terminal-emulator]  3.36.0.1-1
ii  libxss1                               1:1.2.3-1
ii  mesa-vulkan-drivers                   19.3.3-1
ii  steam-devices                         1.0.0.61-2
ii  xfce4-terminal [x-terminal-emulator]  0.8.9.1-1
ii  xterm [x-terminal-emulator]           353-1

Versions of packages steam suggests:
pn  nvidia-driver-libs-i386  <none>
ii  nvidia-vulkan-icd        440.64-1

Versions of packages steam is related to:
ii  libc6                           2.30-2
ii  libgl1                          1.3.1-1
ii  libgl1-mesa-dri                 19.3.3-1
ii  libglx-mesa0 [libglx-vendor]    19.3.3-1
ii  libglx-nvidia0 [libglx-vendor]  440.64-1
ii  libxcb-dri3-0                   1.13.1-5
ii  nvidia-driver                   440.64-1
ii  nvidia-driver-libs              440.64-1
pn  nvidia-driver-libs-i386         <none>

-- debconf information excluded

-- debsums errors found:
debsums: package steam is not installed