ArchLinux on Macbook pro mid 2012 - Internet wifi dilema

Question

Hello Everyone,
I've been using Arch Linux with i3wm in my machine for the past 20 days and I am really enjoying and learning a lot about everything. I have a real problem with my wifi, I can connect but after some minutes or even hours (sometimes) I need to turn it down and on again because it just stops working. I already searched a lot in the forum and I am getting stuck with this situation.
I am using
Wicd 1.7.3 (bzr-r933)
but already tried the networkmanager (nm-applet) and it's even worst.
I am posting some informations about my drivers.
lspci -vnn | grep 14e4:
01:00.0 Ethernet controller [0200]: Broadcom Corporation NetXtreme BCM57765 Gigabit Ethernet PCIe [14e4:16b4] (rev 10)
Subsystem: Broadcom Corporation NetXtreme BCM57765 Gigabit Ethernet PCIe [14e4:16b4]
01:00.1 SD Host controller [0805]: Broadcom Corporation BCM57765/57785 SDXC/MMC Card Reader [14e4:16bc] (rev 10) (prog-if 01)
Subsystem: Broadcom Corporation Device [14e4:0000]
02:00.0 Network controller [0280]: Broadcom Corporation BCM4331 802.11a/b/g/n [14e4:4331] (rev 02)
The ip link output is weird for me... the name is kind of messy:
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN mode DEFAULT group default
link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
2: enp1s0f0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc mq state DOWN mode DEFAULT group default qlen 1000
link/ether 68:5b:35:a1:c6:dd brd ff:ff:ff:ff:ff:ff
3: wlp2s0: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc fq_codel state UP mode DORMANT group default qlen 1000
link/ether a8:86:dd:93:8a:9a brd ff:ff:ff:ff:ff:ff
I tried to use the b43-firmware and b43-legacy but that just worked for a while. I follow the Broadcom Arch wiki page and installed the broadcom-wl. Right now I have the following modules loaded relate to internet connection:
lsmod
Module Size Used by
bcm5974 20480 0 (not sure if related to internet)
wl 6303744 0
cfg80211 483328 1 wl (neither this one)
I also disabled the dhcpcd.service because I read that it may cause some issues.
I imagine that this problem is due to some interferences happening between the packages I have installed to handle the wifi connection. I really need some guidance here.
Thank you guys. This is my first post in here and any Arch community forum, so if there are some wrong formatting above, please point out.
Thx!!

Answer 1

Hello,
I'm no pro, started using Arch recently myself. Not sure about disabling dhcpcd.service. However, you might try blacklisting unneeded modules, more on that in https://wiki.archlinux.org/index.php/Kernel_modules. You may need to blacklist b43 and b43-legacy.
Here's how my /etc/modprobe.d/blacklist.conf looks like:
blacklist bcma-pci-bridge
blacklist ssb
blacklist b43
blacklist brcmsmac
blacklist brcmfmac
blacklist bcma
install bcma-pci-bridge /bin/false
install ssb /bin/false
install b43 /bin/false
install brcmsmac /bin/false
install brcmfmac /bin/false
install bcma /bin/false
Last edited by riddle00 (2015-05-26 15:28:46)