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butabeka

15 Posts

220842

April 21st, 2015 14:00

[workaround] XPS 13 (9343) + BCM 4352 issues -> replace BCM with Intel 7265...

I have the new XPS 13 (9343) with the Broadcom wifi module. In Ubuntu 15.04 beta, the wifi is recognized and used automatically, but:

- the signal is weak (weaker than any of my other machines)

- it only connects in G mode even though I have a 2xN router.

$ lshw -C network
*-network
description: Wireless interface
product: BCM4352 802.11ac Wireless Network Adapter
vendor: Broadcom Corporation
physical id: 0
bus info: pci@0000:02:00.0
logical name: wlan0
version: 03
serial: ac:d1:b8:c0:ba:6d
width: 64 bits
clock: 33MHz
capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless
configuration: broadcast=yes driver=wl0 driverversion=6.30.223.248 (r487574) ip=192.168.0.3 latency=0 multicast=yes wireless=IEEE 802.11abg
resources: irq:19 memory:f7200000-f7207fff memory:f7000000-f71fffff

No extra configuration parameters supported by the driver:

$ iwconfig
wlan0 IEEE 802.11abg ESSID:"NETGEAR93"
Mode:Managed Frequency:2.412 GHz Access Point: 20:0C:C8:29:B8:22
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:on

Am I the only one with this problem? Is there a way to force at least N mode?

pilot625

19 Posts

August 25th, 2015 14:00

Also what driver are you on?

DELL-Jared D

2 Intern

 • 

350 Posts

August 25th, 2015 15:00

$ dpkg -l | grep -i broadcom
ii  bcmwl-kernel-source                                   6.30.223.248+bdcom-0ubuntu0.1                       amd64        Broadcom 802.11 Linux STA wireless driver source

$ modinfo wl
filename:       /lib/modules/3.13.0-62-generic/updates/dkms/wl.ko
license:        MIXED/Proprietary
srcversion:     9A49255BA90267D99664757
alias:          pci:v*d*sv*sd*bc02sc80i*
depends:        cfg80211
vermagic:       3.13.0-62-generic SMP mod_unload modversions 
parm:           passivemode:int
parm:           wl_txq_thresh:int
parm:           oneonly:int
parm:           piomode:int
parm:           instance_base:int
parm:           nompc:int
parm:           intf_name:string

DELL-Jared D

2 Intern

 • 

350 Posts

August 25th, 2015 15:00

That was on the factory Ubuntu 14.04 image with all updates applied. Presumably it is the latest driver available therein, but I'm now in the middle of reimaging the system since it was used during Texas Linux Fest this weekend and I want to make sure it's pristine.

DELL-Jared D

2 Intern

 • 

350 Posts

August 25th, 2015 15:00

Did you change any of the "advanced" settings, of the card, in the device manager?

I did not.

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