Installed the backport but not work, this is the backtrace: [ 139.293574] ------------[ cut here ]------------ [ 139.293592] WARNING: at /build/buildd/linux-backports-modules-2.6.27-2.6.27/debian/build/build-generic/compat-wireless-2.6/net/mac80211/main.c:232 ieee80211_hw_config+0x9e/0xa0 [lbm_cw_mac80211]() [ 139.293600] Modules linked in: aes_x86_64 aes_generic ecryptfs af_packet rfcomm sco bridge stp bnep l2cap bluetooth ppdev acpi_cpufreq cpufreq_stats cpufreq_conservative cpufreq_ondemand cpufreq_userspace cpufreq_powersave freq_table container pci_slot sbs sbshc iptable_filter ip_tables x_tables sbp2 parport_pc lp parport loop joydev arc4 ecb acer_wmi crypto_blkcipher snd_hda_intel uvcvideo iwlagn iwlcore snd_pcm_oss sdhci_pci snd_mixer_oss compat_ioctl32 rfkill videodev sdhci evdev iTCO_wdt pcspkr led_class ricoh_mmc snd_pcm iTCO_vendor_support serio_raw lbm_cw_mac80211 mmc_core psmouse v4l1_compat nvidia(P) i2c_core lbm_cw_cfg80211 snd_seq_dummy snd_seq_oss snd_seq_midi snd_rawmidi snd_seq_midi_event snd_seq video output snd_timer snd_seq_device battery wmi snd button soundcore snd_page_alloc ac intel_agp shpchp pci_hotplug ext3 jbd mbcache sr_mod cdrom sd_mod crc_t10dif sg ata_generic pata_acpi usbhid hid ahci ohci1394 ata_piix ieee1394 libata scsi_mod dock tg3 libphy ehci_hcd uhci_hcd usbcore thermal processor fan fbcon tileblit font bitblit softcursor fuse [ 139.293773] Pid: 6593, comm: iwconfig Tainted: P W 2.6.27-9-generic #1 [ 139.293778] [ 139.293779] Call Trace: [ 139.293794] [] warn_on_slowpath+0x64/0x90 [ 139.293818] [] ? iwl_radio_kill_sw_enable_radio+0x16/0x180 [iwlcore] [ 139.293828] [] ? mutex_unlock+0x9/0x20 [ 139.293845] [] ? iwl4965_mac_config+0x5f/0x300 [iwlagn] [ 139.293869] [] ieee80211_hw_config+0x9e/0xa0 [lbm_cw_mac80211] [ 139.293877] [] ? page_waitqueue+0xa/0x90 [ 139.293906] [] ieee80211_set_freq+0x95/0xa0 [lbm_cw_mac80211] [ 139.293932] [] ieee80211_ioctl_siwfreq+0x7f/0x100 [lbm_cw_mac80211] [ 139.293942] [] ioctl_standard_call+0x66/0xf0 [ 139.293948] [] ? ioctl_standard_call+0x0/0xf0 [ 139.293955] [] ? ioctl_private_call+0x0/0xb0 [ 139.293962] [] wireless_process_ioctl+0xe0/0x170 [ 139.293969] [] ? ioctl_private_call+0x0/0xb0 [ 139.293975] [] ? ioctl_standard_call+0x0/0xf0 [ 139.293982] [] wext_ioctl_dispatch+0x6f/0xb0 [ 139.293989] [] wext_handle_ioctl+0x46/0x90 [ 139.293997] [] dev_ioctl+0x3cf/0x410 [ 139.294004] [] ? up_read+0xe/0x10 [ 139.294012] [] ? do_page_fault+0x372/0x750 [ 139.294019] [] sock_ioctl+0x91/0x280 [ 139.294026] [] vfs_ioctl+0x36/0xb0 [ 139.294032] [] do_vfs_ioctl+0x283/0x2f0 [ 139.294037] [] sys_ioctl+0xa1/0xb0 [ 139.294046] [] system_call_fastpath+0x16/0x1b [ 139.294050] [ 139.294053] ---[ end trace 657c58fd7ee4c3c4 ]--- [ 139.308221] iwlagn: index 0 already used in uCode key table. [ 139.308232] iwlagn: No space for Tx [ 139.308238] iwlagn: Error sending REPLY_WEPKEY: enqueue_hcmd failed: -28 [ 142.592320] iwlagn 0000:06:00.0: PCI INT A disabled [ 144.529211] tg3: eth0: Link is up at 100 Mbps, full duplex. [ 144.529222] tg3: eth0: Flow control is on for TX and on for RX. [ 144.978624] iwlagn 0000:06:00.0: PCI INT A -> GSI 19 (level, low) -> IRQ 19 [ 144.978785] iwlagn 0000:06:00.0: restoring config space at offset 0x1 (was 0x100002, writing 0x100006) [ 145.184551] Registered led device: iwl-phy0:radio [ 145.184601] Registered led device: iwl-phy0:assoc [ 145.184640] Registered led device: iwl-phy0:RX [ 145.184684] Registered led device: iwl-phy0:TX [ 145.220051] iwlagn: index 0 already used in uCode key table. [ 162.823700] NET: Registered protocol family 10 [ 162.824786] lo: Disabled Privacy Extensions [ 162.829827] ADDRCONF(NETDEV_UP): wlan0: link is not ready Note: The ap is not associated (auto or manually inserted the ap is always not associated) In ubuntu 8.04 the wireless led flash but with 8.10 not flash.