I use bcmwl-kernel-source as my wireless driver and I have noticed that the connection is very slow and the WiFi signal varies a lot even though my laptop is near the router. I tried removing bcmwl-kernel-source and installing broadcom-sta-dkms but that made the kernel panic every time I logged in. Heres the details of my system:
sudo iwconfig
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virbr0 no wireless extensions.
lo no wireless extensions.
virbr0-nic no wireless extensions.
wlp4s0 IEEE 802.11 ESSID:"Home Network"
Mode:Managed Frequency:2.462 GHz Access Point: B4:75:0E:D3:65:C7
Bit Rate=5.5 Mb/s Tx-Power=200 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Encryption key:off
Power Management:off
Link Quality=33/70 Signal level=-77 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:0 Missed beacon:0
enp2s0 no wireless extensions.
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System: Host: rudolph-HP-Notebook Kernel: 4.13.0-17-generic x86_64 (64 bit gcc: 5.4.0)
Desktop: Cinnamon 3.4.6 (Gtk 3.18.9) Distro: Linux Mint 18.2 Sonya
Machine: System: Hewlett-Packard product: HP Notebook v: Type1ProductConfigId
Mobo: Hewlett-Packard model: 80C2 v: 96.02
Bios: Insyde v: F.02 date: 03/24/2015
CPU: Dual core Intel Core i7-5500U (-HT-MCP-) cache: 4096 KB
flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 ssse3 vmx) bmips: 9577
clock speeds: max: 3000 MHz 1: 2394 MHz 2: 2394 MHz 3: 2394 MHz
4: 2394 MHz
Graphics: Card-1: Intel Broadwell-U Integrated Graphics bus-ID: 00:02.0
Card-2: Advanced Micro Devices [AMD/ATI] Sun XT [Radeon HD 8670A/8670M/8690M / R5 M330]
bus-ID: 03:00.0
Display Server: X.Org 1.18.4 drivers: ati,radeon,intel (unloaded: fbdev,vesa)
Resolution: 1366x768@60.32hz
GLX Renderer: Mesa DRI Intel HD Graphics 5500 (Broadwell GT2)
GLX Version: 3.0 Mesa 17.0.7 Direct Rendering: Yes
Audio: Card-1 Intel Wildcat Point-LP High Definition Audio Controller
driver: snd_hda_intel bus-ID: 00:1b.0
Card-2 Intel Broadwell-U Audio Controller
driver: snd_hda_intel bus-ID: 00:03.0
Sound: Advanced Linux Sound Architecture v: k4.13.0-17-generic
Network: Card-1: Realtek RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller
driver: r8169 v: 2.3LK-NAPI port: 4000 bus-ID: 02:00.0
IF: enp2s0 state: down mac: <filter>
Card-2: Broadcom BCM43142 802.11b/g/n driver: wl bus-ID: 04:00.0
IF: wlp4s0 state: up mac: <filter>
Drives: HDD Total Size: 1000.2GB (19.7% used)
ID-1: /dev/sda model: ST1000LM024_HN size: 1000.2GB temp: 30C
Partition: ID-1: / size: 909G used: 176G (21%) fs: ext4 dev: /dev/sda2
ID-2: swap-1 size: 8.50GB used: 0.00GB (0%) fs: swap dev: /dev/sda3
RAID: No RAID devices: /proc/mdstat, md_mod kernel module present
Sensors: System Temperatures: cpu: 48.0C mobo: N/A gpu: 41.0
Fan Speeds (in rpm): cpu: N/A
Info: Processes: 203 Uptime: 1:50 Memory: 1269.4/7896.1MB
Init: systemd runlevel: 5 Gcc sys: 5.4.0
Client: Shell (zsh 5.1.1) inxi: 2.2.35
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0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
1: brcmwl-0: Wireless LAN
Soft blocked: no
Hard blocked: no
6: hci0: Bluetooth
Soft blocked: yes
Hard blocked: no
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Network: Card-1: Realtek RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller
driver: r8169
IF: enp2s0 state: down mac:
Card-2: Broadcom BCM43142 802.11b/g/n driver: wl
IF: wlp4s0 state: up mac:
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virbr0 Interface doesn't support scanning.
lo Interface doesn't support scanning.
virbr0-nic Interface doesn't support scanning.
enp2s0 Interface doesn't support scanning.
ESSID:"Rudolphs Home"
Group Cipher : TKIP
Pairwise Ciphers (2) : CCMP TKIP
Group Cipher : TKIP
Pairwise Ciphers (2) : CCMP TKIP
