Comment 98 for bug 621265

I just did a fresh install of 10.10 on a Dell Inspiron E1705, which
has the 3945ABG (rev 02) wifi card and my wifi speed is not reduced
(relative to what it was on 10.04).
I'm using the i686 kernel 2.6.35-23-generic #41-Ubuntu which is the
current one from the Update Manager.
Has someone considered if this bug only occurs on upgrades from 10.04,
rather than fresh installs of 10.10?
I also hesitated to upgrade, but the issue is not affecting me. If
you're in the same situation, I would try the live CD and see if the
issue will indeed affect you.

On Sat, Dec 11, 2010 at 10:29, kdekda <email address hidden> wrote:
> #more /var/lib/NetworkManager/NetworkManager.state
> return me:
> [main]
> NetworkingEnabled=true
> WirelessEnabled=true
> WWANEnabled=true
>
> The wireless switch has no problem on my dell inspiron 1520. "sudo
> rfkill unblock all" so had no effect for me.
>
> --
> You received this bug notification because you are a direct subscriber
> of the bug.
> https://bugs.launchpad.net/bugs/621265
>
> Title:
>  Slow Wireless Connection in Intel 3945abg
>
> Status in “linux” package in Ubuntu:
>  Confirmed
> Status in “linux” source package in Maverick:
>  Confirmed
>
> Bug description:
>  With latest daily-live Maverick (2010-08-20), my wireless connection with Intel 3945abg never go over 3mbps speed.
> I try this in local lan and in internet.
> It seems like a regression about iwl3945 driver, i had a similar problem with older kernel where wireless speed was limited to 1mbps, with k/ubuntu 10.04 and 2.6.32 kernel this problem was disappear.
>
> Some information:
> lsb_release -rd:
> Description:    Ubuntu maverick (development branch)
> Release:        10.10
>
> uname -a:
> Linux ubuntu 2.6.35-16-generic #22-Ubuntu SMP Tue Aug 17 02:21:03 UTC 2010 x86_64 GNU/Linux
>
> dmesg | grep 3945:
>
> [   27.977578] iwl3945: Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux, in-tree:s
> [   27.977583] iwl3945: Copyright(c) 2003-2010 Intel Corporation
> [   27.977678] iwl3945 0000:02:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
> [   27.977693] iwl3945 0000:02:00.0: setting latency timer to 64
> [   28.043199] iwl3945 0000:02:00.0: Tunable channels: 13 802.11bg, 23 802.11a channels
> [   28.043205] iwl3945 0000:02:00.0: Detected Intel Wireless WiFi Link 3945ABG
> [   28.043366] iwl3945 0000:02:00.0: irq 43 for MSI/MSI-X
> [   28.185681] phy0: Selected rate control algorithm 'iwl-3945-rs'
> [   28.523764] iwl3945 0000:02:00.0: loaded firmware version 15.32.2.9
>
> iwconfig:
> wlan0     IEEE 802.11abg  ESSID:"Dorema"
>          Mode:Managed  Frequency:2.472 GHz  Access Point: 00:1A:92:11:1C:C7
>          Bit Rate=54 Mb/s   Tx-Power=15 dBm
>          Retry  long limit:7   RTS thr:off   Fragment thr:off
>          Power Management:off
>          Link Quality=68/70  Signal level=-42 dBm
>          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
>          Tx excessive retries:0  Invalid misc:0   Missed beacon:0
>
> My access point is Asus WL-600g
>
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>