[solved] After a full-system upgrade (Linux 3.15.8) = Wifi undetected

Question

Hi, following this post, I'm seeking help concerning a big problem with my wifi.
In fact, it has been a few months since my wifi interface isn't recognized anymore. Yesterday, after a few tests, I found it was due to the kernel version, so I tried to reinstall my first ArchLinux (Linux 3.13.5-1-ARCH) : it worked, my wifi was back. The problem was that I couldn't reinstall all my stuffs : so I did a full-system upgrade (knowing I will lose my wifi) and now I just want to fix it once and for all (I'm done dealing with it).
So now, your help would be very appreciated. Does anyone have an idead? Or need more details about my config, my laptop, or whatever?
Last edited by nugetchar (2014-08-09 20:30:44)

Answer 1

Okay then, here we go :
When I do a
lspci
I have the following output :
[nugetchar@arch ~]$ lspci
00:00.0 Host bridge: Intel Corporation 3rd Gen Core processor DRAM Controller (rev 09)
00:01.0 PCI bridge: Intel Corporation Xeon E3-1200 v2/3rd Gen Core processor PCI Express Root Port (rev 09)
00:14.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB xHCI Host Controller (rev 04)
00:16.0 Communication controller: Intel Corporation 7 Series/C210 Series Chipset Family MEI Controller #1 (rev 04)
00:19.0 Ethernet controller: Intel Corporation 82579LM Gigabit Network Connection (rev 04)
00:1a.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #2 (rev 04)
00:1b.0 Audio device: Intel Corporation 7 Series/C210 Series Chipset Family High Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 1 (rev c4)
00:1c.1 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 2 (rev c4)
00:1c.2 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 3 (rev c4)
00:1c.3 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 4 (rev c4)
00:1c.5 PCI bridge: Intel Corporation 7 Series/C210 Series Chipset Family PCI Express Root Port 6 (rev c4)
00:1d.0 USB controller: Intel Corporation 7 Series/C210 Series Chipset Family USB Enhanced Host Controller #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation QM77 Express Chipset LPC Controller (rev 04)
00:1f.2 RAID bus controller: Intel Corporation 82801 Mobile SATA Controller [RAID mode] (rev 04)
00:1f.3 SMBus: Intel Corporation 7 Series/C210 Series Chipset Family SMBus Controller (rev 04)
01:00.0 VGA compatible controller: NVIDIA Corporation GF108GLM [NVS 5200M] (rev a1)
01:00.1 Audio device: NVIDIA Corporation GF108 High Definition Audio Controller (rev a1)
03:00.0 Network controller: Broadcom Corporation BCM4313 802.11bgn Wireless Network Adapter (rev 01)
0c:00.0 SD Host controller: O2 Micro, Inc. OZ600FJ0/OZ900FJ0/OZ600FJS SD/MMC Card Reader Controller (rev 05)
So, as you can see, the Network Controller is the following :
03:00.0 Network controller: Broadcom Corporation BCM4313 802.11bgn Wireless Network Adapter (rev 01)
When I do a
ip link
this is what I obtain :
[nugetchar@arch ~]$ ip link
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: eno1: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc pfifo_fast state DOWN mode DEFAULT group default qlen 1000
link/ether f0:1f:af:25:3b:13 brd ff:ff:ff:ff:ff:ff
6: enp0s20u2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc pfifo_fast state UNKNOWN mode DEFAULT group default qlen 1000
link/ether 6e:d6:2d:5c:29:bd brd ff:ff:ff:ff:ff:ff
I started reading this page but am not sure if it is relevant due to the fact it concerns the 3.8.2B version.
Finally, a
more /etc/modprobe.d/modprobe.conf
gives me the following output :
^C[nugetchar@arch ~]$ more /etc/modprobe.d/modprobe.conf
alias floppy off
blacklist fd0
blacklist floppy
blacklist ipv6
blacklist bcma
blacklist pcspkr
blacklist snd_pcsp
I think I need to unblacklist bcma ?
@ewaller : I just saw you reply, here is the output for ls /lib/modules
[nugetchar@arch ~]$ ls /lib/modules
3.15.8-1-ARCH extramodules-3.13-ARCH extramodules-3.15-ARCH
Thank you for your answers, I really appreciate it