LENOVO IDEAPAD N581 MBA98GE Notebook (i have new buy),
by my old laptop (dell) bt5 work great.

OS Backtrack 5 R3 KDE x64 (64bit)

Hardware is:
Ethernet LAN 10 MBit/s, 100 MBit/s, 1000 Mbit/s
Wireless Lan Wireless LAN 802.11 B/G/N
via Bluetooth 4.0
(WLAN 802.11 b/g/n, GBit-LAN, Bluetooth)

I have wicd reconfigur and reboot......................
and netork starting and restarting......................
all doesnt work............

Wlan0 can find my Wlan router but the connectionless aborts irregular, and the performance is reduced,all 1-3 minutes the connection breaks.

new system reboot: start it is 60-70 db until it drops to 30 db, and he connects and keeps getting shorter and shorter and shorter connection.
Lan doesnt exist ???
bluetooth doesnt exist ???


somehow I do not go on,when logs etc. is needed just give modest.

Check:
root@bt:~# iwconfig
lo no wireless extensions.

wlan0 IEEE 802.11bgn ESSID:"W-Lan123"
Mode:Managed Frequency:2.412 GHz Access Point: Not-Associated
Tx-Power=19 dBm
Retry long limit:7 RTS thr: off Fragment thr: off
Encryption key: off
Power Management: off

root@bt:~# ifconfig
lo Link encap:Local Loopback
inet addr:127.0.0.1 Mask:255.0.0.0
inet6 addr: ::1/128 Scope:Host
UP LOOPBACK RUNNING MTU:16436 Metric:1
RX packets:171 errors:0 dropped:0 overruns:0 frame:0
TX packets:171 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:0
RX bytes:41329 (41.3 KB) TX bytes:41329 (41.3 KB)

wlan0 Link encap:Ethernet HWaddr 08:3e:8e:aa:96:15
UP BROADCAST MULTICAST MTU:1500 Metric:1
RX packets:1936 errors:0 dropped:0 overruns:0 frame:0
TX packets:163 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:102125 (102.1 KB) TX bytes:31373 (31.3 KB)

root@bt:~# airmon-ng start wlan0


Found 3 processes that could cause trouble.
If airodump-ng, aireplay-ng or airtun-ng stops working after
a short period of time, you may want to kill (some of) them!

PID Name
1461 dhclient3
1462 dhclient3
3316 dhclient
Process with PID 1461 (dhclient3) is running on interface wlan0
Process with PID 1462 (dhclient3) is running on interface wlan0


Interface Chipset Driver

wlan0 Unknown brcmsmac - [phy0]
(monitor mode enabled on mon0)

root@bt:~# dmesg | tail
[ 1018.666690] ADDRCONF(NETDEV_UP): wlan0: link is not ready
[ 1111.924818] sd 6:0:0:0: [sdb] 60800 512-byte logical blocks: (31.1 MB/29.6 MiB)
[ 1111.924858] sd 6:0:0:0: [sdb] Cache data unavailable
[ 1111.924862] sd 6:0:0:0: [sdb] Assuming drive cache: write through
[ 1111.925662] sd 6:0:0:0: [sdb] Cache data unavailable
[ 1111.925665] sd 6:0:0:0: [sdb] Assuming drive cache: write through
[ 1111.927285] sdb: sdb1
[ 1208.074505] ieee80211 phy0: FIF_CONTROL
[ 1208.074511] ieee80211 phy0: FIF_OTHER_BSS
[ 1208.074518] ieee80211 phy0: brcms_ops_config: change monitor mode: true (implement)
need more info?
sorry, iam new in this forum, i read the "how to make thread".