I can't use wifi or wireless connection ! [Solved]

[ClementMBG]

Hey !

I installed linux mint 19.1 in my laptop yesterday, and I have a problem to use wifi.

When I click on the Network button, it show only the wire connection !


I search for a long time a solution, but nothing work...

Some informations in my computer : (lspci)

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00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor DRAM Controller (rev 06)
00:01.0 PCI bridge: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor PCI Express x16 Controller (rev 06)
00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller (rev 06)
00:03.0 Audio device: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor HD Audio Controller (rev 06)
00:14.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB xHCI (rev 05)
00:16.0 Communication controller: Intel Corporation 8 Series/C220 Series Chipset Family MEI Controller #1 (rev 04)
00:1b.0 Audio device: Intel Corporation 8 Series/C220 Series Chipset High Definition Audio Controller (rev 05)
00:1c.0 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #1 (rev d5)
00:1c.2 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #3 (rev d5)
00:1c.3 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #4 (rev d5)
00:1f.0 ISA bridge: Intel Corporation HM86 Express LPC Controller (rev 05)
00:1f.2 SATA controller: Intel Corporation 8 Series/C220 Series Chipset Family 6-port SATA Controller 1 [AHCI mode] (rev 05)
00:1f.3 SMBus: Intel Corporation 8 Series/C220 Series Chipset Family SMBus Controller (rev 05)
01:00.0 3D controller: NVIDIA Corporation GM107M [GeForce GTX 850M] (rev a2)
03:00.0 Network controller: Broadcom Limited BCM43142 802.11b/g/n (rev 01)
04:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTL8411B PCI Express Card Reader (rev 01)
04:00.1 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 12)

Can you help me ?

Thank you very much !

[JeremyB]

Code: Select all

sudo apt install bcmwl-kernel-source

Reboot

[ClementMBG]

I tried this command, but nothing happen :

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clement@clement-X550JK:~$ sudo apt install bcmwl-kernel-source
[sudo] password for clement:            
Reading package lists... Done
Building dependency tree       
Reading state information... Done
bcmwl-kernel-source is already the newest version (6.30.223.271+bdcom-0ubuntu4).
0 to upgrade, 0 to newly install, 0 to remove and 0 not to upgrade.

[ClementMBG]

Hey,

I search for a long time and I find informations.
Linux mint doesn't detect my wifi card, so I think that a need a wireless/wifi driver to use it.

However, I don't know :

• how to view my model of wifi card
• where I have to search to find the good driver model
• how to install a driver

Does anyone know these commands ?


Thank you so much,

Clement

[JeremyB]

Your wifi is Broadcom Limited BCM43142 802.11b/g/n (rev 01)
Post results for

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lspci -nnk | grep -iA3 net; rfkill list; mokutil --sb-state

[ClementMBG]

Result :

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clement@clement-X550JK:~$ lspci -nnk | grep -iA3 net; rfkill list; mokutil --sb-state
03:00.0 Network controller [0280]: Broadcom Limited BCM43142 802.11b/g/n [14e4:4365] (rev 01)
	Subsystem: Lite-On Communications Inc BCM43142 802.11b/g/n [11ad:6605]
04:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTL8411B PCI Express Card Reader [10ec:5287] (rev 01)
	Subsystem: ASUSTeK Computer Inc. RTL8411B PCI Express Card Reader [1043:202f]
--
04:00.1 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 12)
	Subsystem: ASUSTeK Computer Inc. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [1043:200f]
	Kernel driver in use: r8169
	Kernel modules: r8169
2: hci0: Bluetooth
	Soft blocked: yes
	Hard blocked: no
SecureBoot enabled

[JeremyB]

Go into BIOS settings and disable Secure Boot, do not do anything with the Secure Boot keys

[ClementMBG]

Thanks for your reply Jeremy !

I disable Secure Boot. So, I post the new result for your command :

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clement@clement-X550JK:~$ lspci -nnk | grep -iA3 net; rfkill list; mokutil --sb-state
03:00.0 Network controller [0280]: Broadcom Limited BCM43142 802.11b/g/n [14e4:4365] (rev 01)
	Subsystem: Lite-On Communications Inc BCM43142 802.11b/g/n [11ad:6605]
04:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTL8411B PCI Express Card Reader [10ec:5287] (rev 01)
	Subsystem: ASUSTeK Computer Inc. RTL8411B PCI Express Card Reader [1043:202f]
--
04:00.1 Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [10ec:8168] (rev 12)
	Subsystem: ASUSTeK Computer Inc. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller [1043:200f]
	Kernel driver in use: r8169
	Kernel modules: r8169
0: hci0: Bluetooth
	Soft blocked: yes
	Hard blocked: no
SecureBoot disabled

[JeremyB]

Wonder what happened

Code: Select all

sudo apt-get install --reinstall bcmwl-kernel-source

Reboot

[ClementMBG]

SOLVED !



Thank you so much Jeremy