BACKGROUND:
1. I'm considering a new router to replace my Linksys WRT54G.
2. The Netgear N600 WNDR3400 dual-band home broadband router has a simultaneous 2.4Ghz & 5Ghz AP capability.
3. While I know my Lenovo W510 WiFi works fine at 2.4 Ghz (802.11G), my quest was to find out if it works at 5Ghz.
In order to look that up, I needed to identify my WiFi card and driver on Centos 6.3.
Googling, [url=http://www.cyberciti.biz/faq/linux-find-wireless-driver-chipset/]I found this web site[/url], which explained the procedure:
$ /sbin/lspci -knn | grep -i network
WHICH REPORTED:
00:19.0 Ethernet controller [0200]: Intel Corporation 82577LM Gigabit Network Connection [8086:10ea] (rev 06)
03:00.0 Network controller [0280]: Intel Corporation Centrino Ultimate-N 6300 [8086:4238] (rev 35)
The key information is the "03:00.0" in the "Network controller" line above.
$ /sbin/lspci -nn -s 03:00.0
REPORTED:
03:00.0 Network controller [0280]: Intel Corporation Centrino Ultimate-N 6300 [8086:4238] (rev 35)
$ /sbin/lspci -vv -s 03:00.0
REPORTED:
03:00.0 Network controller: Intel Corporation Centrino Ultimate-N 6300 (rev 35)
Subsystem: Intel Corporation Centrino Ultimate-N 6300 3x3 AGN
Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- SERR-
Kernel driver in use: iwlwifi
Kernel modules: iwlwifi
$ /sbin/modinfo iwlwifi
REPORTED (edited):
filename: /lib/modules/2.6.32-279.5.1.el6.x86_64/kernel/drivers/net/wireless/iwlwifi/iwlwifi.ko
alias: iwlagn
description: Intel(R) Wireless WiFi Link AGN driver for Linux
... stuff ...
parm: 11n_disable:disable 11n functionality (int)
parm: 5ghz_disable:disable 5GHz band (default: 0 [enabled]) (bool)
... stuff ...
Googling with this information in mind, I find this PDF which says the WiFi card handles 5GHz access points:
- [url=http://www.intel.com/content/dam/www/public/us/en/documents/product-briefs/centrino-ultimate-n-6300-brief.pdf]PRODUCT BRIEF Intel? Centrino? Ultimate-N 6300 802.11a/g/n, 3x3, dual-band Wi-Fi[/url]
Given that, I think I've proved that the "Ultimate-N 6300" card in the Lenovo W510 laptop 'can' handle 5Ghz access points!
Note: If you know of a better method, please advise.
How to find 2.4Ghz/5Ghz capability & driver information about your network WiFi card on Centos
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Rocksockdoc
- Posts: 414
- Joined: 2012/03/29 20:12:28
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jacquesbezuidenhout
- Posts: 2
- Joined: 2015/09/26 14:05:43
Re: How to find 2.4Ghz/5Ghz capability & driver information
Hi all, i have been frantically searching for a solution to this, and found it on by using a couple of forums. With no delay, here goes:
dmesg | egrep -i "intel|wireless|iwlwifi|wlp|wlan0"
This will give you all relevant kernel messages.
nmcli d
Mine showed wlp2s0 wifi unmanaged
yum install NetworkManager-wifi
This was the critical one. reboot thereafter.
And as a safeguard, I run software update too, which may or may not have fixed it. But after the above and SW update, my wifi connection popped up, and I am now sending this message from it.
dmesg | egrep -i "intel|wireless|iwlwifi|wlp|wlan0"
This will give you all relevant kernel messages.
nmcli d
Mine showed wlp2s0 wifi unmanaged
yum install NetworkManager-wifi
This was the critical one. reboot thereafter.
And as a safeguard, I run software update too, which may or may not have fixed it. But after the above and SW update, my wifi connection popped up, and I am now sending this message from it.