Ubuntu – Unable to connect to mixed b/g/n wifi network on Ubuntu

broadcomnetwork-managernetworkingwireless

I cannot connect to mixed b/g/n wifi Network. I am using wl drivers. Connection to other wifi networks is working well, but to this network I cannot connect from Ubuntu (from my android phone connection works) Specifications of my wifi network are here:
Wifi configuration

I am on Ubuntu 14.04 LTS. And my Wifi adpater is BCM4313 802.11bgn Wireless Network Adapter
ouput of :

sudo lshw -C network

is :

PCI (sysfs)  


  *-network               
       description: Wireless interface
       product: BCM4313 802.11bgn Wireless Network Adapter
       vendor: Broadcom Corporation
       physical id: 0
       bus info: pci@0000:03:00.0
       logical name: wlan0
       version: 01
       serial: 08:3e:8e:a4:03:6d
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
       configuration: broadcast=yes driver=wl0 driverversion=6.30.223.141 (r415941) latency=0 multicast=yes wireless=IEEE 802.11abg
       resources: irq:17 memory:e4100000-e4103fff
  *-network
       description: Ethernet interface
       product: RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller
       vendor: Realtek Semiconductor Co., Ltd.
       physical id: 0
       bus info: pci@0000:0c:00.0
       logical name: eth0
       version: 07
       serial: b8:88:e3:e2:ff:f7
       size: 1Gbit/s
       capacity: 1Gbit/s
       width: 64 bits
       clock: 33MHz
       capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd 1000bt 1000bt-fd autonegotiation
       configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3LK-NAPI duplex=full firmware=rtl8168e-3_0.0.4 03/27/12 ip=192.168.0.4 latency=0 link=yes multicast=yes port=MII speed=1Gbit/s
       resources: irq:44 ioport:2000(size=256) memory:e2804000-e2804fff memory:e2800000-e2803fff

Where shold be a mistake? Thank you.

Best Answer

The proprietary driver wl is generally not the preferred driver for your 14e4:4727 device. Let's remove it:

sudo apt-get purge bcmwl-kernel-source

And now we load the preferred driver:

sudo modprobe brcmsmac

It may take a reboot. Is there any improvement?

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