{"id":1321,"date":"2010-12-30T14:46:33","date_gmt":"2010-12-30T14:46:33","guid":{"rendered":"http:\/\/mccltd.net\/blog\/?p=1321"},"modified":"2012-01-02T02:47:04","modified_gmt":"2012-01-02T02:47:04","slug":"installing-edimax-ew-7318-usb-wlan-adaptor-on-centos","status":"publish","type":"post","link":"http:\/\/darenmatthews.com\/blog\/?p=1321","title":{"rendered":"Installing Edimax EW-7318 USB WLAN Adaptor on CentOS Linux"},"content":{"rendered":"

\"EW-7318USg<\/a>Reproduced for the benefit of others who are attempting to get this USB Wireless LAN adaptor working on CentOS. The Edimax EW-7318 uses the RealTek chipset.<\/p>\n

Ralink RT2500 series chipsets are supported by the rt73usb\/rt2500usb kernel drivers. A typical supported device is the Belkin Wireless G USB Network Adapter (RT2571F chipset). This device requires the rt73usb firmware which is currently available from http:\/\/elrepo.org<\/p>\n

[root@shimla xen]# ifconfig wlan0
\nwlan0\u00a0\u00a0\u00a0\u00a0 Link encap:Ethernet\u00a0 HWaddr 00:1F:1F:31:C7:03
\nBROADCAST MULTICAST\u00a0 MTU:1500\u00a0 Metric:1
\nRX packets:0 errors:0 dropped:0 overruns:0 frame:0
\nTX packets:0 errors:0 dropped:0 overruns:0 carrier:0
\ncollisions:0 txqueuelen:1000
\nRX bytes:0 (0.0 b)\u00a0 TX bytes:0 (0.0 b)<\/p>\n

The first step is to install the RealTek firmware from the Elrepo repository:<\/p>\n

[root@shimla xen]# yum –enablerepo=elrepo install rt73usb-firmware
\nLoaded plugins: fastestmirror<\/p>\n

Error getting repository data for elrepo, repository not found<\/p><\/blockquote>\n

The repository cannot be found because the RPM is not installed.\u00a0 So install the RPM:<\/p>\n

[root@shimla xen]# rpm –import http:\/\/elrepo.org\/RPM-GPG-KEY-elrepo.org
\n[root@shimla xen]# rpm -Uvh http:\/\/elrepo.org\/elrepo-release-5-3.el5.elrepo.noarch.rpm
\nRetrieving http:\/\/elrepo.org\/elrepo-release-5-3.el5.elrepo.noarch.rpm
\nPreparing…\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 ########################################### [100%]
\n1:elrepo-release\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 ########################################### [100%]
\n[root@shimla xen]#<\/p><\/blockquote>\n

Now that the RPM is installed, download and install the RT73 firmware:<\/p>\n

[root@shimla xen]# yum –enablerepo=elrepo install rt73usb-firmware
\nLoaded plugins: fastestmirror
\nLoading mirror speeds from cached hostfile
\n* base: mirror01.th.ifl.net
\n* elrepo: mirrors.coreix.net
\n* extras: mirror01.th.ifl.net
\n* rpmforge: apt.sw.be
\n* updates: mirror01.th.ifl.net
\nelrepo\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 | 1.9 kB\u00a0\u00a0\u00a0\u00a0 00:00
\nelrepo\/primary_db\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 | 517 kB\u00a0\u00a0\u00a0\u00a0 00:00
\nSetting up Install Process
\nResolving Dependencies
\n–> Running transaction check
\n—> Package rt73usb-firmware.noarch 0:1.8-5.elrepo set to be updated
\n–> Finished Dependency Resolution<\/p>\n

Dependencies Resolved<\/p>\n

================================================================================
\nPackage\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Arch\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Version\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 Repository\u00a0\u00a0\u00a0\u00a0 Size
\n================================================================================
\nInstalling:
\nrt73usb-firmware\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 noarch\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 1.8-5.elrepo\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 elrepo\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 5.9 k<\/p>\n

Transaction Summary
\n================================================================================
\nInstall\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 1 Package(s)
\nUpgrade\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 0 Package(s)<\/p>\n

Total download size: 5.9 k
\nIs this ok [y\/N]: y
\nDownloading Packages:
\nrt73usb-firmware-1.8-5.elrepo.noarch.rpm\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 | 5.9 kB\u00a0\u00a0\u00a0\u00a0 00:00
\nRunning rpm_check_debug
\nRunning Transaction Test
\nFinished Transaction Test
\nTransaction Test Succeeded
\nRunning Transaction
\nInstalling\u00a0\u00a0\u00a0\u00a0 : rt73usb-firmware\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 1\/1<\/p>\n

Installed:
\nrt73usb-firmware.noarch 0:1.8-5.elrepo<\/p>\n

Complete!
\n[root@shimla xen]#<\/p><\/blockquote>\n

At this point you can login to the X11 Gui and open a terminal.\u00a0 type “NetworkManager” and the card will initialise.\u00a0 You can then select the SSID and set any WPA\/WEP key.\u00a0 TIP:\u00a0 Use the same password for your keyring manager as your login! (see later).<\/p>\n

If you reboot at this stage, you will still not connect the the WLAN upon reload.\u00a0 You need to enable NetworkManager on startup:<\/p>\n

chkconfig NetworkManager on<\/p><\/blockquote>\n

Now disable the network and wpa_supplicant services at boot time (NetworkManager now handles these):<\/p>\n

chkconfig network off
\nchkconfig wpa_supplicant off<\/p><\/blockquote>\n

Now start NetworkManager now, without the need to reboot:<\/p>\n

\/etc\/init.d\/NetworkManager start<\/p><\/blockquote>\n

Useful hint: The request for the keyring password, when using NetworkManager, can be suppressed by using the pam_keyring package. The pam_keyring package can be obtained from the RPMForge repository:
\nhttp:\/\/wiki.centos.org\/AdditionalResources\/Repositories\/RPMForge<\/p>\n

I already had the RPM installed so it was just a case of entering:<\/p>\n

yum install pam_keyring<\/p><\/blockquote>\n

Once pam_keyring was installed, view the contents of the “gdm” file:<\/p>\n

cat \/etc\/pam.d\/gdm<\/p><\/blockquote>\n

edit this file, adding “auth optional pam_keyring.so try_first_pass” and “session optional pam_keyring.so” in specific positions:<\/p>\n

vi \/etc\/pam.d\/gdm
\ni
\nauth optional pam_keyring.so try_first_pass
\nsession optional pam_keyring.so
\n<esc>:wq<\/p><\/blockquote>\n

NOTE: The order in which this lines are placed in this file are important, here is a copy from a working system:<\/p>\n

#%PAM-1.0
\nauth\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 required\u00a0\u00a0\u00a0 pam_env.so
\nauth\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 optional\u00a0\u00a0\u00a0 pam_keyring.so try_first_pass <—
\nauth\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0 include\u00a0\u00a0\u00a0\u00a0 system-auth
\naccount\u00a0\u00a0\u00a0 required\u00a0\u00a0\u00a0 pam_nologin.so
\naccount\u00a0\u00a0\u00a0 include\u00a0\u00a0\u00a0\u00a0 system-auth
\npassword\u00a0\u00a0 include\u00a0\u00a0\u00a0\u00a0 system-auth
\nsession\u00a0\u00a0\u00a0 optional\u00a0\u00a0\u00a0 pam_keyinit.so force revoke
\nsession\u00a0\u00a0\u00a0 include\u00a0\u00a0\u00a0\u00a0 system-auth
\nsession\u00a0\u00a0\u00a0 required\u00a0\u00a0\u00a0 pam_loginuid.so
\nsession\u00a0\u00a0\u00a0 optional\u00a0\u00a0\u00a0 pam_console.so
\nsession\u00a0\u00a0\u00a0 optional\u00a0\u00a0\u00a0 pam_keyring.so <—<\/p><\/blockquote>\n

If your keyring password is different from your login password, you will still be prompted to enter it every time you login to your computer.\u00a0 I did warn you about this earlier.\u00a0 It’s possible to fix this but for my purposes, that’s as far as I will go now.\u00a0 I’m just happy the WLAN adaptor now works!<\/p>\n","protected":false},"excerpt":{"rendered":"

Reproduced for the benefit of others who are attempting to get this USB Wireless LAN adaptor working on CentOS. The Edimax EW-7318 uses the RealTek chipset. Ralink RT2500 series chipsets are supported by the rt73usb\/rt2500usb kernel drivers. A typical supported device is the Belkin Wireless G USB Network Adapter (RT2571F chipset). This device requires the […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[18],"tags":[48],"_links":{"self":[{"href":"http:\/\/darenmatthews.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/1321"}],"collection":[{"href":"http:\/\/darenmatthews.com\/blog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/darenmatthews.com\/blog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/darenmatthews.com\/blog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/darenmatthews.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1321"}],"version-history":[{"count":9,"href":"http:\/\/darenmatthews.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/1321\/revisions"}],"predecessor-version":[{"id":1389,"href":"http:\/\/darenmatthews.com\/blog\/index.php?rest_route=\/wp\/v2\/posts\/1321\/revisions\/1389"}],"wp:attachment":[{"href":"http:\/\/darenmatthews.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1321"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/darenmatthews.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=1321"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/darenmatthews.com\/blog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=1321"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}