[SOLVED] Mint KDE 18.3: no Wi-Fi on Dell Inspiron 17-5748

Questions about WIFI networks and devices
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letian
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[SOLVED] Mint KDE 18.3: no Wi-Fi on Dell Inspiron 17-5748

Post by letian » Mon Feb 05, 2018 3:42 pm

Returning to Mint...
And head bumping into sweet old "this kernel does not support your card" issue that still plagues the land of Ubuntu/Debian derivatives.
Anyway, I have just downloaded KDE .iso image, created a live USB and installed over one of the previous Linux installations on a dual boot system with Windows 7.

After booting into KDE desktop I click on the network icon and see no active Wi-Fi networks even though there should be one available.
Checking the kernel, looks like it is still 4.10.
Checking the network cards:

Code: Select all

Card-1: Broadcom BCM43142 
Card-2: Realtek RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller driver: r8169
Is there a quick way to fix the Wi-Fi on this laptop?
Last edited by letian on Fri Feb 09, 2018 6:05 am, edited 1 time in total.

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wallyUSA
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Re: Mint KDE 18.3: no Wi-Fi on Dell Inspiron 17-5748

Post by wallyUSA » Mon Feb 05, 2018 4:22 pm

letian wrote:Returning to Mint...
...Checking the network cards:

Code: Select all

Card-1: Broadcom BCM43142 
Card-2: Realtek RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller driver: r8169
Is there a quick way to fix the Wi-Fi on this laptop?
I am not a tech guy but I can tell you several years ago I installed Ubuntu on a Dell and had problems with wifi. Seems like I had to install a proprietary driver for the BCM43XX. Maybe this will help while you are waiting for someone to give you a specific solution.
Mint 18.3 Sylvia Cinnamon 3.6.6 Kernel 4.13.0-32 (64 bit)
Please, if your query has been resolved, edit your first post and add [SOLVED] to the title.

JeremyB
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Re: Mint KDE 18.3: no Wi-Fi on Dell Inspiron 17-5748

Post by JeremyB » Mon Feb 05, 2018 5:52 pm

Post results for

Code: Select all

lspci -nnk | grep -iA3 net

letian
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Re: Mint KDE 18.3: no Wi-Fi on Dell Inspiron 17-5748

Post by letian » Tue Feb 06, 2018 3:14 am

lspci -nnk | grep -iA3 net output what I've already posted above.

Code: Select all

Network controller: Broadcom Corporation BCM43142 802.11b/g/n (rev 01)
Subsystem: Dell Wireless 1704 802.11n + BT 4.0
Kernel driver in use: bcma-pci-bridge
Kernel modules: bcma

Ethernet controller [0200]: Realtek Semiconductor Co., Ltd. RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller (rev 07)
Subsystem: Dell RTL8101/2/6E PCI Express Fast/Gigabit Ethernet controller
Kernel driver in use: r8169
Kernel modules: r8169

letian
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Re: Mint KDE 18.3: no Wi-Fi on Dell Inspiron 17-5748

Post by letian » Tue Feb 06, 2018 3:19 am

I am not a tech guy but I can tell you several years ago I installed Ubuntu on a Dell and had problems with wifi
And it still does :)
Seriously, I have installed Arch and then Manjaro on the very same laptop and never had issues with Wi-Fi. It is 2018 and Wi-Fi is still not supported on a 4-year old laptop out-of-the-box, this is just sad.
I shall try installing a newer kernel.

UPDATE:
Newer kernel didn't solve the problem, so I tried installing realtek drivers from github, that didn't help either. Now I am starting to think this is specifically Mint KDE issue.

letian
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Re: Mint KDE 18.3: no Wi-Fi on Dell Inspiron 17-5748

Post by letian » Fri Feb 09, 2018 6:04 am

I solved the issue. You'll need to install bcmwl-kernel-source package from https://packages.ubuntu.com/xenial/admi ... nel-source to make Wi-Fi work and a newer linux-image-4.14. Anyway, in case you don't have internet access but have a spare laptop you'll end up donwloading some additional packages like libc6 and its dependencies to make this one work :)

More information on how to deal with Broadcom cards is here: https://askubuntu.com/questions/55868/i ... ss-drivers

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