No wireless connection! Where is the problem?

Bartveurink · 06-17-2016, 06:55 AM

What is the standard procedure when there is no wireless connection?
How can i test the following items?
- Driver
- Firmware
- Wireless Extensions
- Wireless Tools
- After this, does it see a wireless network?

- wpa2
- connection with: ping 192.168.0.1

Bartveurink · 06-17-2016, 07:13 AM

I need the following kernel configuration:

Code:

Networking[*] Networking support[*]   Generic IEEE 802.11 Networking Stack[*]     IEEE 802.11 WEP encryption (802.1x)
    [M]     IEEE 802.11i CCMP support
    [M]     IEEE 802.11i TKIP encryption
    [M]     Software MAC add-on to the IEEE 802.11 networking stack

The last four are not on the menu. So, these are not installed. How do i get these in my configuration?

tnut · 06-17-2016, 07:32 AM

They can be a lot of different reasons:

1. You should knows the exact name of your wireless cards

Code:

lspci

2. You should knows if it required a firmware

Code:

dmesg

check if they are any error message when loading a firmware
3. If needed install firmware
http://www.linuxfromscratch.org/blfs.../firmware.html

4. Check if the kernel see your wireless cards

Code:

ls /sys/class/net

5. Install wpa_supplicant (and it's dependency)
http://www.linuxfromscratch.org/blfs...upplicant.html

6. Give a try to the configuration explain at the end of the page

Good luck

kcirick · 06-17-2016, 09:37 AM

Quote:

Originally Posted by Bartveurink

What is the standard procedure when there is no wireless connection?
How can i test the following items?
- Driver
- Firmware
- Wireless Extensions
- Wireless Tools
- After this, does it see a wireless network?

- wpa2
- connection with: ping 192.168.0.1

- Driver: Check your kernel config to see if your driver is loaded. If you made it as a module, you should be able to see when you "lsmod"
- Firmware: Do you have the latest firmware? Get it from here: http://git.kernel.org/cgit/linux/ker...x-firmware.git
- Wireless Tools and WPA_Supplicant: Follow the direction in BLFS. You should see an entry for your wireless in 'iwconfig' even if it's not configured yet
- You also need dhcpcd if you are not using static IP.

By the way, what version of LFS are you using (Syvinit for Systemd)? The networking setup differs somewhat between the two versions

Bartveurink · 06-17-2016, 10:37 AM

I use LFS version 7.9. I thought it is with sysvinit

lsmod gives that 8192cu is loaded. dmesg did not.

I did try a few things:

Code:

iwlist wlp0s29f7u4 scanning
iwconfig wlp0s29f7u4 essid SSID key K
iwconfig wlp0s29f7u4 mode Managed

All 3 things says that operation is not supported.
The same dongle in ubuntu has the following configuration with iwconfig:

Code:

wlxac220b96cdcd  IEEE 802.11bgn  ESSID:"Sitecom1F2068"  Nickname:"<WIFI@REALTEK>"
          Mode:Managed  Frequency:2.412 GHz  Access Point: xx  
          Bit Rate:300 Mb/s   Sensitivity:0/0  
          Retry:off   RTS thr:off   Fragment thr:off
          Power Management:off
          Link Quality=100/100  Signal level=89/100  Noise level=0/100
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:0  Invalid misc:0   Missed beacon:0

In de kernelconfiguration did i select:
Networking support->
Wireless ->
- cfg80211
- enable powersafe
- cfg80211 wireless extensions compability
- M Generic IEEE 802.11 Networking Stack (mac80211)
- Enable mac80211 mesh networking
- Enable LED triggers
- Export mac80211 internals in DebugFS
- Trace all mac80211 debug messages

driver did i compile by myself and firmware downloaded.
Its look like the wireless extensions are missing. which extensions are that?

kcirick · 06-17-2016, 10:55 AM

Quick Google brought this up: https://archlinuxarm.org/forum/viewt...hp?f=59&t=8323

It says: "the 8192cu needs the deprecated "wext" device for wpa-supplicant instead of nl80211". Can you check through your kernel configuration to see if that option exists?