I installed Ubuntu on my macbook and everything is working.
But when i come out of standby it takes some time until my macbook connects to the wifi network.

this was not the case when i was running OSX.

02:00.0 Network controller: Broadcom Corporation BCM4321 802.11a/b/g/n (rev 03)
Subsystem: Apple Inc. Device 0088
Physical Slot: 4
Flags: bus master, fast devsel, latency 0, IRQ 16
Memory at 90500000 (64-bit, non-prefetchable) [size=16K]
Memory at 90000000 (64-bit, prefetchable) [size=1M]
Capabilities: <access denied>
Kernel driver in use: wl
Kernel modules: wl, ssb