03-03-2014, 02:13 AM
Well, I've looked at Dell's specs for your computer (Latitude C640) and it seems to use a Dell Truemobile 1150 wireless card (either mini-PCI or PCI, depending upon the build date). In either case, this card uses the Orinoco driver set (probably orinoco_cs according to a bunch of posts on the Ubuntu forums since at least 2008).
I have found that there are long-standing problems with the Truemobile 1150 card (see for example https://bugs.launchpad.net/ubuntu/+sourc...bug/498336). I think that even if we are able to find/load an appropriate kernel module to support your card, there will be other problems (this card does not support WPA2 security, for example, which means you would be forced to use less secure wireless protocols such as WEP).
Your C640 has ports for PCMCIA cards (PC cards) on the left side. You can find PCMCIA wifi cards that are more up-to-date and support WPA2 security, such as those found <a href="http://www.ebay.com/sch/items/?_nkw=pcmcia+wireless+card&_sacat=&_ex_kw=&_mPrRngCbx=1&_udlo=&_udhi=&_sop=12&_fpos=&_fspt=1&_sadis=&LH_CAds=">HERE</a>. NOTE: Avoid the cards from Agere and Orinoco! That's the problem you're having now.
Anyway, if you want to stick with the internal card I'll do my best to help, but it's looking like a fairly steep hill to climb (and even if we get to the top of the hill you're STILL without support for WPA2 networks).
Let us know which direction you decide to go.
Thanks!
I have found that there are long-standing problems with the Truemobile 1150 card (see for example https://bugs.launchpad.net/ubuntu/+sourc...bug/498336). I think that even if we are able to find/load an appropriate kernel module to support your card, there will be other problems (this card does not support WPA2 security, for example, which means you would be forced to use less secure wireless protocols such as WEP).
Your C640 has ports for PCMCIA cards (PC cards) on the left side. You can find PCMCIA wifi cards that are more up-to-date and support WPA2 security, such as those found <a href="http://www.ebay.com/sch/items/?_nkw=pcmcia+wireless+card&_sacat=&_ex_kw=&_mPrRngCbx=1&_udlo=&_udhi=&_sop=12&_fpos=&_fspt=1&_sadis=&LH_CAds=">HERE</a>. NOTE: Avoid the cards from Agere and Orinoco! That's the problem you're having now.
Anyway, if you want to stick with the internal card I'll do my best to help, but it's looking like a fairly steep hill to climb (and even if we get to the top of the hill you're STILL without support for WPA2 networks).
Let us know which direction you decide to go.
Thanks!