[Pkg-utopia-maintainers] Bug#836774: network-manager: Fails to connect to wifi, "Too many open files"

[Tony Houghton]

Package: network-manager
Version: 1.4.0-3
Severity: important

After a dist-upgrade network-manager will no longer connect to my wifi.
The logs say "Too many open files in system", but this doesn't seem
likely, because nothing else is broken (except for a minor GTK3 issue
which seems irrelevant). The connection works if I add it to
/etc/network/interfaces and use ifup. I'm attaching a log from
journalctl, because that seems much more useful than /var/log/daemon.log
as suggested on
<https://wiki.gnome.org/Projects/NetworkManager/Debugging>. Their advice
about getting more info from wpa_supplicant doesn't apply to current
Debian either (adding -f... to the dbus file doesn't do anything), I
hope you've got enough in this log.

I found #832093, which looks like a similar issue at first, but I think
this is something different. But that mentions "opting out of
nm-wait-online" to avoid network issues holding up the boot sequence.
Please could you explain how I do that because, while I'm not a systemd
hater, I still don't know much about using it.

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

Kernel: Linux 4.7.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=en_GB.utf8, LC_CTYPE=en_GB.utf8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages network-manager depends on:
ii  adduser                3.115
ii  dbus                   1.10.10-1
ii  init-system-helpers    1.42
ii  libaudit1              1:2.6.6-1
ii  libbluetooth3          5.36-1+b2
ii  libc6                  2.24-2
ii  libglib2.0-0           2.49.6-1
ii  libgnutls30            3.5.3-4
ii  libgudev-1.0-0         230-3
ii  libmm-glib0            1.6.0-1
ii  libndp0                1.6-1
ii  libnewt0.52            0.52.18-3
ii  libnl-3-200            3.2.27-1
ii  libnm0                 1.4.0-3
ii  libpam-systemd         231-5
ii  libpolkit-agent-1-0    0.105-16
ii  libpolkit-gobject-1-0  0.105-16
ii  libreadline6           6.3-8+b4
ii  libselinux1            2.5-3
ii  libsoup2.4-1           2.55.90-1
ii  libsystemd0            231-5
ii  libteamdctl0           1.26-1
ii  libuuid1               2.28.1-1
ii  lsb-base               9.20160629
ii  policykit-1            0.105-16
ii  udev                   231-5
ii  wpasupplicant          2.5-2+v2.4-2

Versions of packages network-manager recommends:
ii  crda             3.13-1+b1
ii  dnsmasq-base     2.76-4
ii  iptables         1.6.0-3
ii  iputils-arping   3:20150815-2
ii  isc-dhcp-client  4.3.4-1
pn  modemmanager     <none>
ii  ppp              2.4.7-1+3

Versions of packages network-manager suggests:
pn  libteam-utils  <none>

-- no debconf information