vpn submenu suddenly empty

[Ralf Hildebrandt]

I reported the very same bug 2 or 3 releases ago. As you can see from the attached screenshot, the VPN submenu is empty.
Yet I still can see a VPN connection when editing connections.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: network-manager-gnome 0.9.3.995+git.20120313t141231.c89224f-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-19.30-generic 3.2.11
Uname: Linux 3.2.0-19-generic x86_64
ApportVersion: 1.94.1-0ubuntu2
Architecture: amd64
Date: Tue Mar 20 20:16:24 2012
IfupdownConfig:
 auto lo
 iface lo inet loopback
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Beta amd64 (20110901)
IpRoute:
 default via 192.168.178.1 dev wlan0 proto static
 169.254.0.0/16 dev wlan0 scope link metric 1000
 192.168.178.0/24 dev wlan0 proto kernel scope link src 192.168.178.38 metric 2
NetworkManager.state:
 [main]
 NetworkingEnabled=true
 WirelessEnabled=true
 WWANEnabled=false
 WimaxEnabled=true
SourcePackage: network-manager-applet
UpgradeStatus: Upgraded to precise on 2012-02-21 (28 days ago)
nmcli-dev:
 DEVICE TYPE STATE DBUS-PATH
 wlan0 802-11-wireless connected /org/freedesktop/NetworkManager/Devices/1
 eth0 802-3-ethernet unavailable /org/freedesktop/NetworkManager/Devices/0
nmcli-nm:
 RUNNING VERSION STATE NET-ENABLED WIFI-HARDWARE WIFI WWAN-HARDWARE WWAN
 running 0.9.3.995 connected enabled enabled enabled enabled disabled

[Ralf Hildebrandt (ralf-hildebrandt)]

Stopping nm-applet and restarting it makes the menu work again.
But as to why it suddenly became unusable is unclear.

[Mathieu Trudel-Lapierre (cyphermox)]

Well, it's most likely a side-effect of a memory leak. I changed the way the menus got updated again during the release, but we also (again) fixed a number more of leaks in code. I think this has perhaps been really fixed now.

There's just one report I had of such issues after running a VPN for a number of hours. What would be useful would be to also have valgrind logs; which might help identifying the issue.

[Ralf Hildebrandt (ralf-hildebrandt)]

Looking at the menus shows that ALL submenus are affected (not only "VPN Connections"): "more networks" is also empty.

When that happens, the functionality is also reduced: "Connection information" doesn't do anything, "Edit Connections" doesn't do anything, nothing works.. I also cannot disconnect from my current WLAN.

[Ralf Hildebrandt (ralf-hildebrandt)]

stracing the process results in:

recvfrom(5, "a\2\312\rm%M\22\3\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\3\37%\3\0\0", 4096, 0, NULL, NULL) = 32
recvfrom(5, 0x1e0eff4, 4096, 0, 0, 0) = -1 EAGAIN (Resource temporarily unavailable)
recvfrom(5, 0x1e0eff4, 4096, 0, 0, 0) = -1 EAGAIN (Resource temporarily unavailable)
poll([{fd=3, events=POLLIN}, {fd=5, events=POLLIN}, {fd=9, events=POLLIN}, {fd=10, events=POLLIN}, {fd=12, events=POLLIN}, {fd=16, events=POLLIN}, {fd=14, events=POLLIN}, {fd=15, events=POLLIN}, {fd=13, events=POLLIN}, {fd=11, events=POLLIN}], 10, -1) = 1 ([{fd=5, revents=POLLIN}])
read(3, 0x7fffaeb9d500, 16) = -1 EAGAIN (Resource temporarily unavailable)
recvfrom(5, "a\2\312\r-&M\22\3\4\4\0\0\0\0\0\0\0\0\4\4\4\4\4\0\0\3\37%\2\0\0", 4096, 0, NULL, NULL) = 32
recvfrom(5, 0x1e0eff4, 4096, 0, 0, 0) = -1 EAGAIN (Resource temporarily unavailable)
recvfrom(5, 0x1e0eff4, 4096, 0, 0, 0) = -1 EAGAIN (Resource temporarily unavailable)
poll([{fd=3, events=POLLIN}, {fd=5, events=POLLIN}, {fd=9, events=POLLIN}, {fd=10, events=POLLIN}, {fd=12, events=POLLIN}, {fd=16, events=POLLIN}, {fd=14, events=POLLIN}, {fd=15, events=POLLIN}, {fd=13, events=POLLIN}, {fd=11, events=POLLIN}], 10, -1^C <unfinished ...>

[Ralf Hildebrandt (ralf-hildebrandt)]

But then the strace doesn't differ much from the strace of a "working" nm-applet.

[Eloy Paris (peloy-chapus)]

There seem to be lots of reports about this same behavior. Bug #930563 is the earliest bug I've been able to find, but I am still looking for the first report, i.e. master bug.

[Launchpad Janitor (janitor)]

[Expired for network-manager-applet (Ubuntu) because there has been no activity for 60 days.]