Reconnecting wifi worked fine here until the system upgrade to 15.04
(vivid). Since then, after suspend and resume wifi does not work almost
always.

No wifi networks are shown in the network manager menu then, and I have
to either switch networking completely off and on again, or select
“connect to hidden nework…” and choose the desired SSID there. This is
really annoying, and I'm thinking about switching to another distro
because of this (and bug 1268257).

But this happens only on an Acer Laptop, not on another one from Lenovo.

$ lspci -v -s 4:0.0
04:00.0 Network controller: Broadcom Corporation BCM43228 802.11a/b/g/n
        Subsystem: Foxconn International, Inc. Device e04b
        Flags: bus master, fast devsel, latency 0, IRQ 18
        Memory at b3500000 (64-bit, non-prefetchable) [size=16K]
        Capabilities: <access denied>
        Kernel driver in use: wl

Have I found the correct bug report, or should I file a new one?

Is there any better workaround than the mine?

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https://bugs.launchpad.net/bugs/1270257

Title:
  NetworkManager failed to function after suspend and resume

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