Red Hat Bugzilla – Bug 426150
DHCP does not work in update kernel using 3945 wireless
Last modified: 2007-12-23 08:45:41 EST
Description of problem: I have an ASUS F3SC running Fedora 8 x86_64. This laptop has the "Santa Rosa" chipset. It comes with an onboard "Intel Corporation PRO/Wireless 3945ABG Network Connection (rev 02)" wireless adapter. I am using the iwlwifi driver that comes with Fedora 8. I am attaching to a Netgear wireless access point dooberry, using 128 bit WEP. In Fedora 8 kernel version kernel-2.6.23.8-63.fc8 DHCP does not work with this wireless card- however it does work with kernel-2.6.23.1-49.fc8. Something has gone wrong between these two versions. How to reproduce: Boot kernel of your choice, without starting network adaptors. iwconfig wlan0 essid "whatever" iwconfig wlan0 key "whatever" iwconfig wlan0 mode managed iwconfig wlan0 ap auto dhclient wlan0 With the newer kernel, you never get an IP. If you set an ip address manually, you have no problems.
Please attach the contents of /var/log/messages after running dhclient. Is that the exact order of commands you issued above? FWIW, it should be something more like this: iwconfig wlan0 mode managed # This is probably not necessary iwconfig wlan0 ap auto # This is probably not necessary either iwconfig wlan0 key "whatever" # Set the key before setting the SSID iwconfig wlan0 essid "whatever" dhclient wlan0 Does that work any better? Any reason you aren't using NetworkManager or system-config-network?
I am using ifup, system-config-network and so on. My real problem is that my wireless card didn't come up using ifup. I was trying to give you a concrete repeatable bug you could solve. Anyway, it doesn't matter now, since DHCP does work in 2.6.23.9-85.fc8. I have now got a similar but different problem which I am about to report in another bug, which I'd like to draw your attention to.