I recently installed a Linux Mint/Windows 10 dual-boot on my laptop. Everything went fine, but when I boot into Linux Mint there's no way to connect to Wi-Fi...

I tried running ifconfig and it wasn't installed. So I downloaded the internet tools package on another computer and transferred from a USB drive. Tried installing that and said sys/"something".h No file or directory exists. SOOO...I downloaded the library and can't figure out how to install THAT.

There must be an easier way to handle this. And what kind of distro doesn't have Wi-Fi capabilities automatically installed? Not to mention I didn't not include anything in the initial install.

Can someone please help?

I'm relatively new at Linux but have primarily beem trying to learn the command-line but there always seems to be some problem. A shell only install of Debian on another laptop jas some commands work and not others, same with this one. So it makes it extremely difficult to follow any of the tutorials because only half the commanfs they say to use work, and then not veing able to easily install packages makes it harder.

Welcome to LinuxQuestions.

Unfortunately, many tutorials are out of date. In addition Mint is based upon Ubuntu and therefore any command run by root needs to be preceded by sudo.

Post the output of the command
ip a

ifconfig is deprecated and has been replaced by the ip command. Were/how did you download the internet tools package? The package you downloaded might not be correct for the kernel and libraries that are installed in version 19.

https://www.tecmint.com/ip-command-examples/

What is the make/model of your laptop. Post the output of the lspci command that is relevant to the wireless adapter. Unfortunately not all wireless adapters are automatically configured. It would help if you could connect your laptop with an ethernet cable in case you need to download any files.

If you tried running ifconfig and it wasn't installed, your version of Mint 19 wasn't properly installed in the first place as ifconfig is included by default. You need to reinstall Mint.

However, just to check, what makes you think ifconfig isn't installed - what error message did it give?

Not sure what distribution I was playing with at the time but I stand corrected... ifconfig is in then /sbin/ directory.

Some distributions do not include /sbin in a regular users environment path so the ifconfig command is not found while ip is in the /bin which usually is.

Regardless ifconfig is deprecated.

No problem. I was referring to the OP's setup. Whether deprecated or not (as an aside, you might find this an interesting read - https://www.dedoimedo.com/computers/...-ifconfig.html), if ifconfig isn't installed on their Mint system then something is awry and it could indicate an incomplete system installation which may well explain the lack of wifi.

Okay so I installed a package called firmware-b43-installer_019-3. Ifconfig is working. It says:

Enol: flags=4098<UP,BROADCAST,MULTICAST> mtu 1500 etc etc.

What do I do now?

Okay so I installed a package called firmware-b43-installer_019-3. Ifconfig is working. It says:

Enol: flags=4098<UP,BROADCAST,MULTICAST> mtu 1500 etc etc.

What do I do now?

results of ip a:

L: lo: <LOPPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000
Link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
Inet 127.0.0 1/8 scope lo
Valid_lft forever preferred_lft forever
Inet6 ::1/128 scope host
Valid_lft forever preferred_lft forever
2: enol: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel state DOWN group default qlen 1000
Link/ether ac:e2:d3:16:a9:91 brs ff:ff:ff:ff:ff:ff

---------

It tells me there is no wlan0 when running iwconfig wlan0 essid daemon9 key *******. It seems like every tutorial, either I am missing something necessary thru internet or the commands don't work OR they don't say what to do if everything doesn't work exactly like they say.

Command: lspci -nnk | grep -i net -A2
02:00.0 Ethernet controller [0200]: Realtek Semiconductor Co.
pCI express gigabiy ethernet controller [10ec:8168] _rev 15)
Ethernet controller -[103c:8344]
Kernel driver in use: r8169
Kernel modules r8169
03:00.0 network controller 0280 realtek semiconductor etc etc



Command: iwconfig
Eno1. No wireless extensions.
Lo. No wireless extensions.

Command: ifconfig -a
Eno1: flags=4099<UP, BROADCAST,MULTICAST> mtu 1500
Ether ac:e2:d3:16:a9:91 txqueueleb 1000 Ethernet
Rx packets 0....everything 0

Lo: flags=UP LOOPBACK RUNNING mtu 65536
Inet 127.0.0.1 netmask 255.0.0.0
Inet6::1 prefixlen 138 scopeid 0x10host
Loop txqueuelen 1000 local loopback
Rx packets 8992 bytes 541862
Ex errors 0 etc....

Post the make/model of your laptop. The above information is for the wired not wireless adpater. While you posted information that you installed the Broadcom wireless firmware we need to know if your adapter is a Broadcom device.

I have an HP...do I have to switch back to windows to figure out the rest

And model number?

No, look at the output of just the lspci command and post the info pertaining to the wireless adpater.

03.00.0 Network Controller [0280]: Realtek Semiconductor Co., Lyd. device [10ec:d723]
Subsystem: Hewlett-Packard Company Device [103c:8319]

That's all it says from the lspci command. With what I previously posted.

Wait also after (rev 15)...

Subsystem: Hewlett-Packard Company RT8111/8168/8411 PCI Express Gigabit

If you post the output from the following, that might help:

Laptop model number...

That is your wireless adapter.

According to the pci-ids website it is a RTL8723DE 802.11b/g/n wireless adapter and I forgot about a previous thread on the same device. Unfortunately, this is a fairly new wireless adapter and there isn't official kernel support yet as far as I know. There is an unofficial driver that appears to work.

https://pci-ids.ucw.cz/read/PC/10ec/d723


https://github.com/lwfinger/rtlwifi_new/issues/267
https://github.com/smlinux/rtl8723de

Might help some.
https://askubuntu.com/questions/9832...ice-d723-issue

https://www.linuxquestions.org/quest...er-4175619142/