I recently installed arch on my MacBook Pro and am having issues with the wireless constantly disconnecting. I'm using b43 and b43-fwcutter.
03:00.0 Network controller: Broadcom Corporation BCM4331 802.11a/b/g/n (rev 02)
iwconfig during disconnect:
wlp3s0 IEEE 802.11bg ESSID:"network"
Mode:Managed Frequency:2.437 GHz Access Point: D8:C7:C8:88:AE:A1
Bit Rate=11 Mb/s Tx-Power=20 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Link Quality=70/70 Signal level=0 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:230 Invalid misc:223 Missed beacon:0
I can provide any information needed, but I wasn't sure what all to include in this first post.
Your dmesg output while the internet is disconnected could be useful.
LENOVO Y 580 IVYBRIDGE 660M NVIDIA
Unix is user-friendly. It just isn't promiscuous about which users it's friendly with. - Steven King
can you be connected for some period of time or it instantly disconects? and what do you use to set it up(script/program...)?
If you are using the default netcfg a.k.a net-auto-wireless, try switching to other alternative, such as NetworkManager. I don't know if my suggestion would help, but IMHO NetworkManager is better at maintaining wireless connection compared to netcfg.