Thread: poor wifi performance

hi, i´m new ubuntu , spent past couple of days reading sorts of stuff trying wifi working right. problem internet slow , slow speed when copying files lan. if connected cable it´s fine. network fine , same laptop had windows 7 , never had wifi trouble.

here output of iwconfig (here moment reveal wifi adapter supports b/g, 54 mbps fine):

code:

icefire@toshiba:~$ iwconfigwlan0     ieee 802.11abg  essid:"dd-wrt"             mode:managed  frequency:2.437 ghz  access point: 00:26:5a:b1:62:ee              bit rate=54 mb/s   tx-power=15 dbm              retry  long limit:7   rts thr:off   fragment thr:off           power management:off           link quality=62/70  signal level=-48 dbm             rx invalid nwid:0  rx invalid crypt:0  rx invalid frag:0           tx excessive retries:15  invalid misc:5600   missed beacon:0   lo        no wireless extensions.   eth0      no wireless extensions.

and here sudo lshw -c network

code:

   *-network                       description: ethernet interface        product: rtl8101e/rtl8102e pci express fast ethernet controller        vendor: realtek semiconductor co., ltd.        physical id: 0        bus info: pci@0000:02:00.0        logical name: eth0        version: 02        serial: 00:1e:33:5d:46:ab        size: 10mbit/s        capacity: 100mbit/s        width: 64 bits        clock: 33mhz        capabilities: pm msi pciexpress msix vpd bus_master cap_list ethernet physical tp mii 10bt 10bt-fd 100bt 100bt-fd autonegotiation        configuration: autonegotiation=on broadcast=yes driver=r8169 driverversion=2.3lk-napi duplex=half latency=0 link=no multicast=yes port=mii speed=10mbit/s        resources: irq:44 ioport:4000(size=256) memory:d0010000-d0010fff memory:d0000000-d000ffff   *-network        description: wireless interface        product: pro/wireless 3945abg [golan] network connection        vendor: intel corporation        physical id: 0        bus info: pci@0000:03:00.0        logical name: wlan0        version: 02        serial: 00:1f:3c:ae:d0:ea        width: 32 bits        clock: 33mhz        capabilities: pm msi pciexpress bus_master cap_list ethernet physical wireless        configuration: broadcast=yes driver=iwl3945 driverversion=3.5.0-27-generic firmware=15.32.2.9 ip=192.168.1.20 latency=0 link=yes multicast=yes wireless=ieee 802.11abg        resources: irq:46 memory:d4200000-d4200fff

think driver issue? tried lot of solutions found in various forums still have no luck.. please (bearing in mind i´m new linux i´ll need detailed explanations...)

Forum The Ubuntu Forum Community Ubuntu Official Flavours Support Networking & Wireless [ubuntu] poor wifi performance

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