Thread: Wireless has completely vanished after upgrading to 12.04

hey everyone, i'm pretty new linux, hope me out here... see, i've upgraded 10.04 12.04 on laptop , wireless simply, absolutely vanished. isn't listed on ifconfig, iwconfig says "no wireless extensions." , network-manager-gnome says "device not ready (firmware missing)".

i've tried installing tg3 , b43, nothing works... maybe it's kind of conflict upgrade, working absolutely fine before it. in advance help! here's info boot, ask need!

code:

distrib_id=ubuntu distrib_release=12.04 distrib_codename=precise distrib_description="ubuntu 12.04.1 lts" linux mecer 2.6.32-40-generic #87-ubuntu smp tue mar 6 00:56:56 utc 2012 x86_64 x86_64 x86_64 gnu/linux  02:00.0 network controller [0280]: intel corporation pro/wireless 5100 agn [shiloh] network connection [8086:4237]         subsystem: intel corporation wifi link 5100 agn [8086:1211]         kernel driver in use: iwlagn -- 85:00.0 ethernet controller [0200]: broadcom corporation netlink bcm5787m gigabit ethernet pci express [14e4:1693] (rev 02)         subsystem: hewlett-packard company device [103c:30dd]         kernel driver in use: tg3  bus 001 device 001: id 1d6b:0002 linux foundation 2.0 root hub bus 002 device 001: id 1d6b:0002 linux foundation 2.0 root hub bus 003 device 001: id 1d6b:0001 linux foundation 1.1 root hub bus 004 device 001: id 1d6b:0001 linux foundation 1.1 root hub bus 005 device 001: id 1d6b:0001 linux foundation 1.1 root hub bus 006 device 001: id 1d6b:0001 linux foundation 1.1 root hub bus 007 device 001: id 1d6b:0001 linux foundation 1.1 root hub bus 008 device 001: id 1d6b:0001 linux foundation 1.1 root hub bus 001 device 004: id 04f2:b059 chicony electronics co., ltd ckf7037 hp webcam bus 003 device 002: id 03f0:171d hewlett-packard bluetooth 2.0 interface [broadcom bcm2045] bus 004 device 002: id 08ff:2810 authentec, inc. aes2810  lo        no wireless extensions.  eth0      no wireless extensions.  tun0      no wireless extensions.  wlan0     ieee 802.11abgn  essid:off/any             mode:managed  access point: not-associated   tx-power=15 dbm              retry  long limit:7   rts thr:off   fragment thr:off           power management:off            0: hci0: bluetooth         soft blocked: no         hard blocked: no 2: phy1: wireless lan         soft blocked: no         hard blocked: no

can physically turn wi-fi on either through button on laptop or through combination of fn key + 1 of f keys? or potentially uninstalling networkmanager may correct issue i've seen solution in previous threads.

Forum The Ubuntu Forum Community Ubuntu Official Flavours Support Networking & Wireless [kubuntu] Wireless has completely vanished after upgrading to 12.04

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