14e4:4365 Weak wifi signal

[Hendrik Schrieber]

On a fresh install of Ubuntu 14.04 on my new HP Pavilion 15-020ng with Broadcom BCM43142 hybrid wifi/bluetooth chipset the official driver from Broadcom does not work correctly. On 2.4 GHz the wifi signal is so low that the connection is interrupted on a regular basis (network manager shows 26 Mb/s), other devices (notebook, tablet) do have a normal signal at the same position and even this laptop has a good signal with Windows 7 (Dual-Boot).

The exact device name:
08:00.0 Network controller [0280]: Broadcom Corporation BCM43142 802.11b/g/n [14e4:4365] (rev 01)

I am using the official wl driver that was installed by default, also tried reinstalling via "sudo apt-get install bcmwl-kernel-source --reinstall" without improvement and "sudo iwconfig wlan0 power off". Also blacklisted b43, brcmsmac and bcma as suggested by "Linux Wireless".

ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: bcmwl-kernel-source 6.30.223.141+bdcom-0ubuntu2
ProcVersionSignature: Ubuntu 3.13.0-37.64-generic 3.13.11.7
Uname: Linux 3.13.0-37-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.14.1-0ubuntu3.5
Architecture: amd64
CurrentDesktop: Unity
Date: Thu Oct 9 23:04:07 2014
InstallationDate: Installed on 2014-09-27 (12 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
SourcePackage: bcmwl
UpgradeStatus: No upgrade log present (probably fresh install)

[Hendrik Schrieber (hennekn)]

I just noticed there is a new version of the Broadcom driver available from their website: 6.30.223.248

I will try to build and test this driver tomorrow and report back. According to the changelog it might fix the problem:
"Upgraded to support 3.11.x."

Readme is here: http://www.broadcom.com/docs/linux_sta/README_6.30.223.248.txt

If it fixes the problem, a backport would be great since this version of the driver is currently not in 14.04 which uses kernel 3.13.

[Hendrik Schrieber (hennekn)]

The signal has improved with the new driver. Network manager now reports 58 to 63 Mb/s under "connection info". This is about the same as my Android phone reports.

Please backport this driver to Ubuntu 14.04!

[Hendrik Schrieber (hennekn)]

Sadly the signal is still very bad when moving further away from the router. My Android phone shows 4 out of 5 bars while the laptop only has 1 out of 5 on Ubuntu. I will compare this to Windows and report back later.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Oleg Shmelev (oshmelyov)]

I have exactly the same issue on my HP Pavilion 15-p163nr.

Issue: weak signal, frequent disconnects.
Kubuntu 14.04 LTS
Uname both: Linux 3.13.0-37-generic x86_64 and Uname: Linux 3.13.0-39-generic x86_64

And I did the same thing before I found this thread — build the driver from source found at http://www.broadcom.com/support/802.11/linux_sta.php and install it.
After that the signal is much better — but still after some time it loses the connectivity (without any apparent indication — i.e. 3 bars in notification icon but websites load forever.
In my attempt to fix that I did the following:
1. Set IPv6 in my connection settings to Ignore
2. Enforce the regulatory domain to my country code (from dmesg it seemed that regulatory domain was periodically switching from 'world' to 'Ru'):
sudo sed -i 's/^REG.*=$/&RU/' /etc/default/crda
sudo iw reg set RU
3. (Just in case):
sudo update-initramfs -u

And it seems to work almost fine now.

I also tried 14.10 and had issues with wifi too — the signal was OK but it constantly disconnected and even to the point where my aweful DLink Dir-300 had to be restarted — connection was repeatedly lost on my other devices too.

PS. Hendrik, as far as I understand the 5 Ghz frequency is not supported by the controller itself (at least for Pavilion 15-p163nr).

______________________
$ lspci -vnn -d 14e4:
08:00.0 Network controller [0280]: Broadcom Corporation BCM43142 802.11b/g/n [14e4:4365] (rev 01)
        Subsystem: Hewlett-Packard Company Device [103c:2230]
        Flags: bus master, fast devsel, latency 0, IRQ 18
        Memory at b5500000 (64-bit, non-prefetchable) [size=32K]
        Capabilities: <access denied>
        Kernel driver in use: wl
______________________
$ lsmod | grep "brcmsmac\|ssb\|wl\|b43\|bcma"
wl 6363686 0
cfg80211 484040 1 wl
______________________
That's what I'm having now in:

$ dmesg | grep wl
[ 11.946547] wl: module license 'unspecified' taints kernel.
[ 11.949084] wl: module verification failed: signature and/or required key missing - tainting kernel
[ 8974.077536] Modules linked in: pci_stub vboxpci(OX) vboxnetadp(OX) vboxnetflt(OX) vboxdrv(OX) bnep rfcomm uvcvideo videobuf2_vmalloc videobuf2_memops btusb videobuf2_core bluetooth videodev hp_wmi sparse_keymap snd_hda_codec_hdmi intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm crct10dif_pclmul crc32_pclmul snd_hda_codec_realtek ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd snd_hda_intel snd_hda_codec snd_hwdep joydev snd_pcm serio_raw snd_page_alloc snd_seq_midi snd_seq_midi_event lpc_ich snd_rawmidi wl(POX) snd_seq snd_seq_device rtsx_pci_ms cfg80211 snd_timer snd memstick mei_me mei soundcore hp_accel lis3lv02d hp_wireless input_polldev intel_smartconnect mac_hid parport_pc ppdev lp parport rtsx_pci_sdmmc nouveau i915 psmouse mxm_wmi ttm ahci i2c_algo_bit libahci drm_kms_helper r8169 drm mii rtsx_pci wmi video
[ 8974.077637] CPU: 0 PID: 441 Comm: wl_event_handle Tainted: P OX 3.13.0-39-generic #66-Ubuntu
[ 8974.077847] [<ffffffffa05a9f3b>] wl_notify_roaming_status+0xcb/0x150 [wl]
[ 8974.077942] [<ffffffffa05a8b72>] wl_event_h...

[Oleg Shmelev (oshmelyov)]

My WiFI disconnected once again just a minute ago and here's what I found in dmesg right after it disconnected
$ dmesg
[13868.961515] cfg80211: Calling CRDA to update world regulatory domain
[13868.967287] cfg80211: World regulatory domain updated:
[13868.967297] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
[13868.967303] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[13868.967308] cfg80211: (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[13868.967311] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
[13868.967314] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[13868.967317] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[13868.967796] cfg80211: Calling CRDA for country: RU
[13868.970836] cfg80211: Regulatory domain changed to country: RU
[13868.970840] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
[13868.970842] cfg80211: (2402000 KHz - 2482000 KHz @ 40000 KHz), (N/A, 2000 mBm)
[13868.970844] cfg80211: (5735000 KHz - 5835000 KHz @ 20000 KHz), (N/A, 3000 mBm)
[13871.118092] cfg80211: Calling CRDA for country: RU
[13871.123036] cfg80211: Regulatory domain changed to country: RU
[13871.123041] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
[13871.123045] cfg80211: (2402000 KHz - 2482000 KHz @ 40000 KHz), (N/A, 2000 mBm)
[13871.123047] cfg80211: (5735000 KHz - 5835000 KHz @ 20000 KHz), (N/A, 3000 mBm)
[13876.690454] cfg80211: Calling CRDA to update world regulatory domain
[13876.692717] cfg80211: World regulatory domain updated:
[13876.692720] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
[13876.692722] cfg80211: (2402000 KHz - 2472000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[13876.692723] cfg80211: (2457000 KHz - 2482000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[13876.692724] cfg80211: (2474000 KHz - 2494000 KHz @ 20000 KHz), (300 mBi, 2000 mBm)
[13876.692725] cfg80211: (5170000 KHz - 5250000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[13876.692726] cfg80211: (5735000 KHz - 5835000 KHz @ 40000 KHz), (300 mBi, 2000 mBm)
[13876.692841] cfg80211: Calling CRDA for country: RU
[13876.694730] cfg80211: Regulatory domain changed to country: RU
[13876.694732] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
[13876.694734] cfg80211: (2402000 KHz - 2482000 KHz @ 40000 KHz), (N/A, 2000 mBm)
[13876.694735] cfg80211: (5735000 KHz - 5835000 KHz @ 20000 KHz), (N/A, 3000 mBm)
[13878.828279] cfg80211: Calling CRDA for country: RU
[13878.833279] cfg80211: Regulatory domain changed to country: RU
[13878.833288] cfg80211: (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp)
[13878.833292] cfg80211: (2402000 KHz - 2482000 KHz @ 40000 KHz), (N/A, 2000 mBm)
[13878.833296] cfg80211: (5735000 KHz - 5835000 KHz @ 20000 KHz), (N/A, 3000 mBm)
____________________________________________________

I'm not sure what is happening and how to fix this. Any helpful advice would be really appreciated.

[Oleg Shmelev (oshmelyov)]

This is $ iw event -t -f output when connectivity issues start
http://paste.ubuntu.com/8836174/

I disabled IPv6 and also 11n but to no avail.

[penalvch (penalvch)]

Hendrik Knackstedt, could you please provide only the missing information following https://help.ubuntu.com/community/WifiDocs/Driver/bcm43xx#Broadcom_STA_Wireless_driver ?

[Carlos Bouzón García (bougar)]

Same problem on hp 15-p005ns. When i post my problem people tell me pages with tutorials for installing driver but my problem is that drivers is installed but it dont work fine.
If only we had sup of b43 or something similar.

[penalvch (penalvch)]

bougar, please file a new report so that your issue following https://help.ubuntu.com/community/WifiDocs/Driver/bcm43xx#Broadcom_STA_Wireless_driver so your issue may be tracked.

[Carlos Bouzón García (bougar)]

apt-cache policy bcmwl-kernel-source :

bcmwl-kernel-source:
  Instalados: 6.30.223.248+bdcom-0ubuntu1
  Candidato: 6.30.223.248+bdcom-0ubuntu1
  Tabla de versión:
 *** 6.30.223.248+bdcom-0ubuntu1 0
        100 /var/lib/dpkg/status
     6.30.223.141+bdcom-0ubuntu2 0
        500 http://archive.ubuntu.com/ubuntu/ trusty/restricted amd64 Packages
_____________________________________________________________________________
lspci -vvnn | grep -A 9 Network:

08:00.0 Network controller [0280]: Broadcom Corporation BCM43142 802.11b/g/n [14e4:4365] (rev 01)
 Subsystem: Hewlett-Packard Company Device [103c:2230]
 Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR- FastB2B- DisINTx-
 Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
 Latency: 0, Cache Line Size: 64 bytes
 Interrupt: pin A routed to IRQ 18
 Region 0: Memory at b5500000 (64-bit, non-prefetchable) [size=32K]
 Capabilities: <access denied>
 Kernel driver in use: wl
_____________________________________________________________________________
uname -r:

Linux LinuxRocks 3.13.0-24-generic #47-Ubuntu SMP Fri May 2 23:30:00 UTC 2014 x86_64 x86_64 x86_64 GNU/Linux

____________________________________________________________________________
sudo dmidecode -s bios-version:

F.09
____________________________________________________________________________
sudo dmidecode -s bios-release-date:

08/04/2014

___________________________________________________________________________
Laptop:

hp pavilion 15-p005ns

__________________________________________________________________________
Comments:
 I have tried previous wl version but they are worst.
 The b43 driver does not support this card.
 I installed in last ubuntu version with different kernels and also in debian with the
 same errors.
 Weak wifi and lots of wifi drops.

[penalvch (penalvch)]

bougar, please stop dog piling onto this report with "Me too!" comments. This typically makes folks ignore your comments, versus trying to help you. If you want your issue addressed, please again see https://bugs.launchpad.net/ubuntu/+source/bcmwl/+bug/1379524/comments/11 .

[n0dwis (n0dwis-u)]

Hello!
Is any solution exists? I can't work on linux because of this bug.

[penalvch (penalvch)]

n0dwis, if you have a bug in Ubuntu, please file a new report (not make comments here) following https://help.ubuntu.com/community/WifiDocs/Driver/bcm43xx#Broadcom_STA_Wireless_driver so your issue may be reviewed and tracked.

[Andre Bogus (bogusandre)]

There is a patch for the driver on http://pastebin.com/pATazP6K – found it through https://aur.archlinux.org/packages/broadcom-wl/

I've applied the patch on my Lenovo Z510 (which also has a BCM43142 chip) using dkms (copied the patch into /usr/src/bcmwl-…/patches, edited the dkms.conf, adding the patch name, called dkms common-postinstall) and since then the wifi has been rock solid.

@Christopher M. Penalver: Can I somehow help to include the patch in the bcmwl-kernel-source package?

[penalvch (penalvch)]

Andre Bogus, it would be most helpful if you filed a new report via a terminal:
ubuntu-bug bcmwl

Please feel free to subscribe me to it.

[Andre Bogus (bogusandre)]

Christopher M. Penalver, done. It is in #1415880.

[Launchpad Janitor (janitor)]

[Expired for bcmwl (Ubuntu) because there has been no activity for 60 days.]

[david6 (andrew-dowden)]

FYI:

Same issues (Weak WiFi signal, Bluetooth missing firmware) for BCM3142 802.11b/g/n [14e4:4365] on 'HP Stream 11 Pro' on Ubuntu 15.04 (Vivid) fully updated.

[david6 (andrew-dowden)]

Sorry, correction: 'BCM43142'

[david6 (andrew-dowden)]

Should this be marked as duplicate of: #1415880 ?

[david6 (andrew-dowden)]

Solution for Broadcom BCM43142 'Bluetooth firmware not loaded':

http://askubuntu.com/questions/547552/bluetooth-not-working-on-14-10-with-bcm43142

[Martin (martin-jones)]

exactly the same problem on HP15 204NG. Here infos on my setup:

[code]

########## wireless info START ##########

Report from: 24 Apr 2015 11:51 CEST +0200

Booted last: 24 Apr 2015 11:46 CEST +0200

Script from: 06 Apr 2015 17:23 UTC +0000

##### release ###########################

Distributor ID: Ubuntu
Description: Ubuntu 14.04.2 LTS
Release: 14.04
Codename: trusty

##### kernel ############################

Linux 3.16.0-34-generic #47~14.04.1-Ubuntu SMP Fri Apr 10 17:49:16 UTC 2015 x86_64 x86_64 x86_64 GNU/Linux

Parameters: ro, quiet, splash, vt.handoff=7

##### desktop ###########################

Ubuntu (from ~/.dmrc)

##### lspci #############################

03:00.0 Network controller [0280]: Broadcom Corporation BCM43142 802.11b/g/n [14e4:4365] (rev 01)
 Subsystem: Hewlett-Packard Company Device [103c:2230]
 Kernel driver in use: wl

04:00.0 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8101E/RTL8102E PCI Express Fast Ethernet controller [10ec:8136] (rev 07)
 Subsystem: Hewlett-Packard Company Device [103c:22cd]
 Kernel driver in use: r8169

##### lsusb #############################

Bus 002 Device 003: ID 0bda:5776 Realtek Semiconductor Corp.
Bus 002 Device 002: ID 0438:7900 Advanced Micro Devices, Inc.
Bus 002 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 001 Device 003: ID 0a5c:216c Broadcom Corp.
Bus 001 Device 002: ID 0438:7900 Advanced Micro Devices, Inc.
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
Bus 004 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 003 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub

##### PCMCIA card info ##################

##### rfkill ############################

0: phy0: Wireless LAN
 Soft blocked: no
 Hard blocked: no
1: brcmwl-0: Wireless LAN
 Soft blocked: no
 Hard blocked: no
2: hci0: Bluetooth
 Soft blocked: no
 Hard blocked: no

##### lsmod #############################

wl 6367833 0
hp_wmi 14109 0
sparse_keymap 13948 1 hp_wmi
cfg80211 494362 1 wl
wmi 19193 1 hp_wmi

##### interfaces ########################

auto lo
iface lo inet loopback

##### ifconfig ##########################

eth0 Link encap:Ethernet HWaddr <MAC 'eth0' [IF]>
          UP BROADCAST MULTICAST MTU:1500 Metric:1
          RX packets:0 errors:0 dropped:0 overruns:0 frame:0
          TX packets:0 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:0 (0.0 B) TX bytes:0 (0.0 B)

wlan0 Link encap:Ethernet HWaddr <MAC 'wlan0' [IF]>
          inet addr:192.168.0.15 Bcast:192.168.0.255 Mask:255.255.255.0
          UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
          RX packets:1166 errors:0 dropped:0 overruns:0 frame:2237
          TX packets:1296 errors:0 dropped:0 overruns:0 carrier:0
          collisions:0 txqueuelen:1000
          RX bytes:735033 (735.0 KB) TX bytes:191196 (191.1 KB)
          Interrupt:36

##### iwconfig ##########################

eth0 no wireless extensions.

lo no wireless extensions.

wlan0 IEEE 802.11abg ESSID:"TPLINKACCESS"
          Mode:Managed Freque...

[penalvch (penalvch)]

david6 / Martin, it will help immensely if you filed a new report via a terminal:
ubuntu-bug bcmwl-kernel-source

Please ensure you provide the information requested in https://help.ubuntu.com/community/WifiDocs/Driver/bcm43xx#Broadcom_STA_Wireless_driver .

[david6 (andrew-dowden)]

Does the Broadcom BCM43142 802.11b/g/n [14e4:4365] chipset support 5GHz ?

Currently only 2.4GHz visible, for 'HP Stream 11 Pro' on Ubuntu 15.04 (Vivid) 64-bit (fully updated).

[Full name (h-launchpad-net)]

HP Stream 11 with Ubuntu 15.04 64bit. Wifi works for a short while after a restart, but eventually stops working:

[ 1808.529062] Corrupted low memory at ffff8800000013d0 (13d0 phys) = 1317000000000000
[ 1808.529084] Corrupted low memory at ffff8800000013d8 (13d8 phys) = 00000703
[ 1808.529153] ------------[ cut here ]------------
[ 1808.529184] WARNING: CPU: 0 PID: 2767 at /build/buildd/linux-3.19.0/arch/x86/kernel/check.c:140 check_for_bios_corruption+0xcb/0x120()
[ 1808.529193] Memory corruption detected in low memory
[ 1808.529202] Modules linked in: rndis_host cdc_ether usbnet mii rfcomm bnep nls_iso8859_1 joydev btusb bluetooth hp_wmi sparse_keymap hid_rmi intel_rapl intel_soc_dts_thermal intel_powerclamp coretemp kvm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel cryptd wl(POE) uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core snd_intel_sst_acpi v4l2_common snd_intel_sst_core snd_soc_rt5640 snd_soc_sst_mfld_platform videodev snd_hda_codec_hdmi snd_soc_rl6231 media snd_soc_core snd_hda_codec_realtek snd_hda_codec_generic serio_raw i915 snd_compress snd_pcm_dmaengine snd_seq_midi snd_hda_intel snd_hda_controller snd_seq_midi_event snd_hda_codec drm_kms_helper snd_hwdep drm lpc_ich cfg80211 snd_pcm mei_txe mei shpchp snd_rawmidi i2c_algo_bit iosf_mbi wmi snd_seq snd_seq_device snd_timer hp_wireless video
[ 1808.529437] dw_dmac int3400_thermal dw_dmac_core acpi_thermal_rel int3403_thermal processor_thermal_device intel_smartconnect snd i2c_hid hid rfkill_gpio soundcore i2c_designware_platform snd_soc_sst_acpi i2c_designware_core spi_pxa2xx_platform 8250_dw pwm_lpss_platform mac_hid pwm_lpss parport_pc ppdev lp parport autofs4 mmc_block sdhci_acpi sdhci
[ 1808.529545] CPU: 0 PID: 2767 Comm: kworker/0:0 Tainted: P W OE 3.19.0-16-generic #16-Ubuntu
[ 1808.529556] Hardware name: Hewlett-Packard HP Stream Notebook PC 11/8023, BIOS F.08 12/26/2014
[ 1808.529574] Workqueue: events check_corruption
[ 1808.529586] ffffffff81a91cc8 ffff88001bcdfcf8 ffffffff817c2235 0000000000000007
[ 1808.529605] ffff88001bcdfd48 ffff88001bcdfd38 ffffffff8107595a ffff8800000013d8
[ 1808.529624] 0000000000000000 ffff880000010000 ffffffff81ede350 0000000000000001
[ 1808.529642] Call Trace:
[ 1808.529668] [<ffffffff817c2235>] dump_stack+0x45/0x57
[ 1808.529688] [<ffffffff8107595a>] warn_slowpath_common+0x8a/0xc0
[ 1808.529706] [<ffffffff810759d6>] warn_slowpath_fmt+0x46/0x50
[ 1808.529728] [<ffffffff810135e0>] ? __switch_to+0x150/0x5e0
[ 1808.529749] [<ffffffff8105c84b>] check_for_bios_corruption+0xcb/0x120
[ 1808.529769] [<ffffffff8105c8ae>] check_corruption+0xe/0x40
[ 1808.529787] [<ffffffff8108eb78>] process_one_work+0x158/0x430
[ 1808.529806] [<ffffffff817c40f6>] ? __schedule+0x6/0x8e0
[ 1808.529824] [<ffffffff8108f6bb>] worker_thread+0x5b/0x530
[ 1808.529842] [<ffffffff8108f660>] ? rescuer_thread+0x3a0/0x3a0
[ 1808.529861] [<ffffffff81094759>] kthread+0xc9/0xe0
[ 1808.529881] [<ffffffff81094690>] ? kthread_create_on_node+0x1c0/0x1c0
[ 1808.529901] [<ffffffff817c9298>] ret_from_fork+0x58/0x90
[ 1808.529921] [<ffffffff81094690>] ? kthread_create_on_node+0x1c0/0x1c0
[ 1808.529934] ---[ end trace 9b8fbf0e79e26b3f ]---

[penalvch (penalvch)]

Full name, it will help immensely if you filed a new report via a terminal:
ubuntu-bug linux

Please feel free to subscribe me to it.

[Luis Alvarado (luisalvarado)]

Hi Christopher. I also had a similar issue on my computer at work Lenovo Z510. But It only happened once. I am waiting for the issue to appear. The behaviour is similar, after a minute or 2 it simply dropped the connection. Currently am writing over Wifi and it has not dropped yet, but if it drops, I will create a new report about it. The only dmesg error in there was

[ 4.901049] Bluetooth: BNEP socket layer initialized
[ 135.919686] ERROR @wl_cfg80211_get_station : Wrong Mac address, mac = ac:9e:17:65:47:58 profile =4c:5e:0c:b9:6c:65
[ 135.919766] ERROR @wl_cfg80211_get_station : Wrong Mac address, mac = ac:9e:17:65:47:58 profile =4c:5e:0c:b9:6c:65
[ 135.959510] cfg80211: World regulatory domain updated:

But like I said, nothing else pops up. If anything I will create the report and add you to it. Thank you friend.

[ramiro (haly88)]

Hey guys, i still having this issue, and i don't know how to solve it.
I have a Lenovo Ideapad Z410 with Ubuntu 16.04.
Mi wireless card is:

Devise:
name: 09:00.0 Network controller [0280]: Broadcom Corporation BCM43142 802.11b/g/n [14e4:4365] (rev 01)
descripción: Interfaz inalámbrica
producto: BCM43142 802.11b/g/n
fabricante: Broadcom Corporation
driver: bcmwl-kernel-source 6.30.223.271 (r587334)

I see the same behavior, really low signal, and a lots of connections cuts, interruptions.
I tried the solution provided by Andre Bogus without success.
Please i need some help with it.

[penalvch (penalvch)]

ramiro, it will help immensely if you filed a new report with Ubuntu, using the default repository kernel (not mainline/upstream/3rd party) via a terminal:
ubuntu-bug linux

Please feel free to subscribe me to it.

[ramiro (haly88)]

Christopher,
I already add some bug and subscribe you to it
https://bugs.launchpad.net/ubuntu/+source/bcmwl/+bug/1690138

Let me know if something is missing.

Thanks much.

Lic. Ramiro Musso

2017-05-07 5:43 GMT-03:00 Christopher M. Penalver <
<email address hidden>>:

> ramiro, it will help immensely if you filed a new report with Ubuntu,
> using the default repository kernel (not mainline/upstream/3rd party) via a
> terminal:
> ubuntu-bug linux
>
> Please feel free to subscribe me to it.
>
> --
> You received this bug notification because you are subscribed to the bug
> report.
> https://bugs.launchpad.net/bugs/1379524
>
> Title:
> 14e4:4365 Weak wifi signal
>
> Status in bcmwl package in Ubuntu:
> Expired
>
> Bug description:
> On a fresh install of Ubuntu 14.04 on my new HP Pavilion 15-020ng with
> Broadcom BCM43142 hybrid wifi/bluetooth chipset the official driver
> from Broadcom does not work correctly. On 2.4 GHz the wifi signal is
> so low that the connection is interrupted on a regular basis (network
> manager shows 26 Mb/s), other devices (notebook, tablet) do have a
> normal signal at the same position and even this laptop has a good
> signal with Windows 7 (Dual-Boot).
>
> The exact device name:
> 08:00.0 Network controller [0280]: Broadcom Corporation BCM43142
> 802.11b/g/n [14e4:4365] (rev 01)
>
> I am using the official wl driver that was installed by default, also
> tried reinstalling via "sudo apt-get install bcmwl-kernel-source
> --reinstall" without improvement and "sudo iwconfig wlan0 power off".
> Also blacklisted b43, brcmsmac and bcma as suggested by "Linux
> Wireless".
>
> ProblemType: Bug
> DistroRelease: Ubuntu 14.04
> Package: bcmwl-kernel-source 6.30.223.141+bdcom-0ubuntu2
> ProcVersionSignature: Ubuntu 3.13.0-37.64-generic 3.13.11.7
> Uname: Linux 3.13.0-37-generic x86_64
> NonfreeKernelModules: wl
> ApportVersion: 2.14.1-0ubuntu3.5
> Architecture: amd64
> CurrentDesktop: Unity
> Date: Thu Oct 9 23:04:07 2014
> InstallationDate: Installed on 2014-09-27 (12 days ago)
> InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64
> (20140722.2)
> SourcePackage: bcmwl
> UpgradeStatus: No upgrade log present (probably fresh install)
>
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