Arch Linux

BlueCaramel

Member

Registered: 2015-09-19

Posts: 9

Laptop can't detect wifi

Hello, I just finished installing the base on my laptop, it can currently detect ethernet but it can't detect any wifi right now.

The problem is that I can't find the same folders on arch. It would be great if someone could help me out here. Thanks in advance.

Last edited by BlueCaramel (2015-09-20 16:43:55)

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 20,349

Re: Laptop can't detect wifi

Welcome to Arch Linux.

Sadly, you did not give us much to go on.  You might consider, for example, telling us what kind of wifi hardware you are using.
Also, what do you mean by "it can't detect wifi"?  Is the interface not showing up?  Are no access points being identified in your site scan?

What commands are you giving, and what are the specific error messages?

---

Nothing is too wonderful to be true, if it be consistent with the laws of nature -- Michael Faraday
Sometimes it is the people no one can imagine anything of who do the things no one can imagine. -- Alan Turing
---
How to Ask Questions the Smart Way

BlueCaramel

Member

Registered: 2015-09-19

Posts: 9

Re: Laptop can't detect wifi

Welcome to Arch Linux.

Sadly, you did not give us much to go on.  You might consider, for example, telling us what kind of wifi hardware you are using.
Also, what do you mean by "it can't detect wifi"?  Is the interface not showing up?  Are no access points being identified in your site scan?

What commands are you giving, and what are the specific error messages?

Sorry, I'm new to this...No access points were being identified in my site scan.  The laptop is a lenovo flex 15.

Broadcom Corporation BCM43142 is the network controller

and the command ping 8.8.8.8.  doesn't work for me. and no wlan detected when i typed "ip link" in the terminal

Last edited by BlueCaramel (2015-09-19 03:34:34)

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 20,349

Re: Laptop can't detect wifi

Did you use sudo wifi-menu  ??

Let's start with the output of the following commands:
ip addr
iw list
rfkill list   (You may need to install it first)
and
find /etc/systemd

---

Nothing is too wonderful to be true, if it be consistent with the laws of nature -- Michael Faraday
Sometimes it is the people no one can imagine anything of who do the things no one can imagine. -- Alan Turing
---
How to Ask Questions the Smart Way

ewaller

Administrator

From: Pasadena, CA

Registered: 2009-07-13

Posts: 20,349

Re: Laptop can't detect wifi

Oh...   I just found this https://wiki.archlinux.org/index.php/Br … n-detected

So, what is the output of lspci   ?

---

Nothing is too wonderful to be true, if it be consistent with the laws of nature -- Michael Faraday
Sometimes it is the people no one can imagine anything of who do the things no one can imagine. -- Alan Turing
---
How to Ask Questions the Smart Way

BlueCaramel

Member

Registered: 2015-09-19

Posts: 9

Re: Laptop can't detect wifi

Did you use sudo wifi-menu  ??

Let's start with the output of the following commands:
ip addr
iw list
rfkill list   (You may need to install it first)
and
find /etc/systemd

For some reason when I opened my laptop today the wired connection also can't be detected. I didn't do anything on the laptop besides the basic installation. So I can't install rfkill...

here are the outputs

[e]$ ip addr
1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN
group default
    link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00
    inet 127.0.0.1/8 scope host lo
       valid_lft forever preferred_lft forever
    inet6 ::1/128 scope host
       valid_lft forever preferred_lft forever
2: enp3s0: <NO-CARRIER,BROADCAST,MULTICAST,UP> mtu 1500 qdisc fq_codel
state DOWN group default qlen 1000
    link/ether 54:ee:75:1b:a2:02 brd ff:ff:ff:ff:ff:ff
[e]$ iw list
[e]$ rfkill list
bash: rfkill: command not found
[e]$ find /etc/systemd
/etc/systemd
/etc/systemd/logind.conf
/etc/systemd/coredump.conf
/etc/systemd/journal-upload.conf
/etc/systemd/user.conf
/etc/systemd/resolved.conf
/etc/systemd/user
/etc/systemd/bootchart.conf
/etc/systemd/network
/etc/systemd/journal-remote.conf
/etc/systemd/system
/etc/systemd/system/dbus-org.freedesktop.NetworkManager.service
/etc/systemd/system/getty.target.wants
/etc/systemd/system/getty.target.wants/getty@tty1.service
/etc/systemd/system/display-manager.service
/etc/systemd/system/dbus-org.freedesktop.nm-dispatcher.service
/etc/systemd/system/multi-user.target.wants
/etc/systemd/system/multi-user.target.wants/NetworkManager.service
/etc/systemd/system/multi-user.target.wants/remote-fs.target
/etc/systemd/timesyncd.conf
/etc/systemd/system.conf
/etc/systemd/journald.conf

Last edited by BlueCaramel (2015-09-19 19:03:44)

BlueCaramel

Member

Registered: 2015-09-19

Posts: 9

Re: Laptop can't detect wifi

Oh...   I just found this https://wiki.archlinux.org/index.php/Br … n-detected

So, what is the output of lspci   ?

00:00.0 Host bridge: Intel Corporation Atom Processor Z36xxx/Z37xxx
Series SoC Transaction Register (rev 0e)
00:02.0 VGA compatible controller: Intel Corporation Atom Processor
Z36xxx/Z37xxx Series Graphics & Display (rev 0e)
00:13.0 SATA controller: Intel Corporation Atom Processor E3800 Series
SATA AHCI Controller (rev 0e)
00:14.0 USB controller: Intel Corporation Atom Processor Z36xxx/Z37xxx
Series USB xHCI (rev 0e)
00:1a.0 Encryption controller: Intel Corporation Atom Processor
Z36xxx/Z37xxx Series Trusted Execution Engine (rev 0e)
00:1b.0 Audio device: Intel Corporation Atom Processor Z36xxx/Z37xxx
Series High Definition Audio Controller (rev 0e)
00:1c.0 PCI bridge: Intel Corporation Atom Processor E3800 Series PCI
Express Root Port 1 (rev 0e)
00:1c.2 PCI bridge: Intel Corporation Atom Processor E3800 Series PCI
Express Root Port 3 (rev 0e)
00:1c.3 PCI bridge: Intel Corporation Atom Processor E3800 Series PCI
Express Root Port 4 (rev 0e)
00:1f.0 ISA bridge: Intel Corporation Atom Processor Z36xxx/Z37xxx
Series Power Control Unit (rev 0e)
00:1f.3 SMBus: Intel Corporation Atom Processor E3800 Series SMBus
Controller (rev 0e)
02:00.0 Network controller: Broadcom Corporation BCM43142 802.11b/g/n
(rev 01)
03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd.
RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 10)

BlueCaramel

Member

Registered: 2015-09-19

Posts: 9

Re: Laptop can't detect wifi

It says dependency failed for dhcpcd on eth0

Head_on_a_Stick

Member

From: The Wirral

Registered: 2014-02-20

Posts: 8,778

Website

Re: Laptop can't detect wifi

It says dependency failed for dhcpcd on eth0

https://bbs.archlinux.org/viewtopic.php?id=57855

Have you seen this page?
https://wiki.archlinux.org/index.php/Broadcom_wireless

---

Jin, Jîyan, Azadî

BlueCaramel

Member

Registered: 2015-09-19

Posts: 9

Re: Laptop can't detect wifi

i fixed the wired internet and it works again. i'm still trying to fix the wifi

BlueCaramel

Member

Registered: 2015-09-19

Posts: 9

Re: Laptop can't detect wifi

0: ideapad_wlan: Wireless LAN
	Soft blocked: no
	Hard blocked: no
1: ideapad_bluetooth: Bluetooth
	Soft blocked: no
	Hard blocked: no

here is the output for rfkill list