Update: I switch from ubuntu to Manjaro, using kernel 4.2.2
Huray I am not doomed to be using older kernel such as 3.13 forever.
Here are some additional information aboud neworking card
$ lspci -k
....
02:00.0 Network controller: Broadcom Corporation BCM43142 802.11b/g/n (rev 01)
Subsystem: Lenovo Device 0611
Kernel driver in use: wl
Kernel modules: bcma, wl
03:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS5229 PCI
Express Card Reader (rev 01)
Subsystem: Lenovo Device 5100
Kernel driver in use: rtsx_pci
Kernel modules: rtsx_pci
and the driver
https://bbs.archlinux.org/viewtopic.php?id=145884
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Packages, which is subscribed to bcmwl in Ubuntu.
https://bugs.launchpad.net/bugs/1471238
Title:
BCM43142 will stop working when signal is below 55%
Status in bcmwl package in Ubuntu:
Confirmed
Bug description:
Lenovo ThinkPad E545
Network controller : Broadcom Corporation BCM43142 802.11b/g/n (rev
01)
If you are using this WIFI card, beware that *bcmwf-kernel-source* does
perform very badly with a newer version
of the *bcmwf-kernel-source* 6.30.223.248-bdcom-0ubuntuXX (XX I have tried
them all and all are not working)
Desripction of what is happening:
You are connnected to a network (does not matter on the router config
or router) and when you are at signal level cca 55% and less the
internet drops and you are offline (still connected but no packets get
in or out) for a long period of time (restarting card works for a few
moments when the drop occurs again)
---
*bcmwf-kernel-source* 6.30.223.141 works as it should, but I am stuck
in kernel 3.13 as I want to go kernel 3.19 and I can't because I have
to use newer bcmwf and it is unstable, very much.
---
$ lsb_release -rd
Description: Linux Mint 17.1 Rebecca
Release: 17.1
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