Public bug reported:

WiFi connection has high latency and slow speeds and is occasionally
dropped. Connecting to a TP-Link Archer A20 V1. Windows driver is
stable.

apt-cache policy bcmwl-kernel-source
bcmwl-kernel-source:
  Installed: 6.30.223.271+bdcom-0ubuntu5
  Candidate: 6.30.223.271+bdcom-0ubuntu5
  Version table:
 *** 6.30.223.271+bdcom-0ubuntu5 500
        500 http://us.archive.ubuntu.com/ubuntu focal/restricted amd64 Packages
        100 /var/lib/dpkg/status

sudo lspci -vvnn | grep -A 9 Network
pcilib: sysfs_read_vpd: read failed: Input/output error
06:00.0 Network controller [0280]: Broadcom Inc. and subsidiaries BCM4360 
802.11ac Wireless Network Adapter [14e4:43a0] (rev 03)
        Subsystem: ASUSTeK Computer Inc. BCM4360 802.11ac Wireless Network 
Adapter [1043:85df]
        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: 32 bytes
        Interrupt: pin A routed to IRQ 18
        Region 0: Memory at f7e00000 (64-bit, non-prefetchable) [size=32K]
        Region 2: Memory at f7c00000 (64-bit, non-prefetchable) [size=2M]
        Capabilities: [48] Power Management version 3
                Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA 
PME(D0+,D1+,D2+,D3hot+,D3cold+)
                Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=2 PME-

lsb_release -rd
Description:    Ubuntu 20.04.1 LTS
Release:        20.04

uname -a
Linux <my_hostname> 5.4.0-42-generic #46-Ubuntu SMP Fri Jul 10 00:24:02 UTC 
2020 x86_64 x86_64 x86_64 GNU/Linux

sudo dmidecode -s bios-version
2501

sudo dmidecode -s bios-release-date
07/21/2014

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: bcmwl-kernel-source 6.30.223.271+bdcom-0ubuntu5
ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44
Uname: Linux 5.4.0-42-generic x86_64
NonfreeKernelModules: wl
ApportVersion: 2.20.11-0ubuntu27.8
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Tue Aug 25 09:00:47 2020
InstallationDate: Installed on 2020-07-31 (25 days ago)
InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
ProcEnviron:
 TERM=xterm-256color
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
SourcePackage: bcmwl
UpgradeStatus: No upgrade log present (probably fresh install)

** Affects: bcmwl (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: amd64 apport-bug focal

-- 
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to bcmwl in Ubuntu.
https://bugs.launchpad.net/bugs/1892880

Title:
  WiFi connection is slow and occasionally drops

Status in bcmwl package in Ubuntu:
  New

Bug description:
  WiFi connection has high latency and slow speeds and is occasionally
  dropped. Connecting to a TP-Link Archer A20 V1. Windows driver is
  stable.

  apt-cache policy bcmwl-kernel-source
  bcmwl-kernel-source:
    Installed: 6.30.223.271+bdcom-0ubuntu5
    Candidate: 6.30.223.271+bdcom-0ubuntu5
    Version table:
   *** 6.30.223.271+bdcom-0ubuntu5 500
          500 http://us.archive.ubuntu.com/ubuntu focal/restricted amd64 
Packages
          100 /var/lib/dpkg/status

  sudo lspci -vvnn | grep -A 9 Network
  pcilib: sysfs_read_vpd: read failed: Input/output error
  06:00.0 Network controller [0280]: Broadcom Inc. and subsidiaries BCM4360 
802.11ac Wireless Network Adapter [14e4:43a0] (rev 03)
        Subsystem: ASUSTeK Computer Inc. BCM4360 802.11ac Wireless Network 
Adapter [1043:85df]
        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: 32 bytes
        Interrupt: pin A routed to IRQ 18
        Region 0: Memory at f7e00000 (64-bit, non-prefetchable) [size=32K]
        Region 2: Memory at f7c00000 (64-bit, non-prefetchable) [size=2M]
        Capabilities: [48] Power Management version 3
                Flags: PMEClk- DSI- D1+ D2+ AuxCurrent=0mA 
PME(D0+,D1+,D2+,D3hot+,D3cold+)
                Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=2 PME-

  lsb_release -rd
  Description:  Ubuntu 20.04.1 LTS
  Release:      20.04

  uname -a
  Linux <my_hostname> 5.4.0-42-generic #46-Ubuntu SMP Fri Jul 10 00:24:02 UTC 
2020 x86_64 x86_64 x86_64 GNU/Linux

  sudo dmidecode -s bios-version
  2501

  sudo dmidecode -s bios-release-date
  07/21/2014

  ProblemType: Bug
  DistroRelease: Ubuntu 20.04
  Package: bcmwl-kernel-source 6.30.223.271+bdcom-0ubuntu5
  ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44
  Uname: Linux 5.4.0-42-generic x86_64
  NonfreeKernelModules: wl
  ApportVersion: 2.20.11-0ubuntu27.8
  Architecture: amd64
  CasperMD5CheckResult: skip
  CurrentDesktop: ubuntu:GNOME
  Date: Tue Aug 25 09:00:47 2020
  InstallationDate: Installed on 2020-07-31 (25 days ago)
  InstallationMedia: Ubuntu 20.04 LTS "Focal Fossa" - Release amd64 (20200423)
  ProcEnviron:
   TERM=xterm-256color
   PATH=(custom, no user)
   XDG_RUNTIME_DIR=<set>
   LANG=en_US.UTF-8
   SHELL=/bin/bash
  SourcePackage: bcmwl
  UpgradeStatus: No upgrade log present (probably fresh install)

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https://bugs.launchpad.net/ubuntu/+source/bcmwl/+bug/1892880/+subscriptions

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