[iwl3945] Slow transfer rate in ubuntu 10.04

[Andrey Zhekov]

Ubuntu 10.04 all updates till 29.05.2010 32bit

After upgrading from 9.10 I've noticed very slow transfer rates on my Intel 3945. I have wi-fi spot that gives me 6Mbit/sec on other systems (like win7) where I have rates around 690KBytes/sec but in Ubuntu only 120-130KBytes/sec maximum.

Don't know the package that causes this.

PS> I experienced the same issue on Archlinux 2010.05 with the new kernel 33 and 34.

[Rytis Taukevičius (rytis-taukevicius)]

Same problem here with HP Pavilion dv2175ea.
Intel® PRO/Wireless 3945 802.11a/b/g;
When I have installed Ubuntu 10.04LTS everythink was exelent, after system update, there showed up this problem.
When I connect to my wifi router, download speed is about ~500KB/s, after some time it drops to ~100KB/s. Helps only network reconnect.

P.S. Sorry for bad english.

[penalvch (penalvch)]

Andrey Zhekov, this bug was reported a while ago and there hasn't been any activity in it recently. We were wondering if this is still an issue? If so, could you please test for this with the latest development release of Ubuntu? ISO images are available from http://cdimage.ubuntu.com/daily-live/current/ .

If it remains an issue, could you please run the following command in the development release from a Terminal (Applications->Accessories->Terminal), as it will automatically gather and attach updated debug information to this report:

apport-collect -p linux <replace-with-bug-number>

Also, could you please test the latest upstream kernel available following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. Please do not test the daily folder, but the one all the way at the bottom. Once you've tested the upstream kernel, please comment on which kernel version specifically you tested. If this bug is fixed in the mainline kernel, please add the following tags:
kernel-fixed-upstream
kernel-fixed-upstream-VERSION-NUMBER

where VERSION-NUMBER is the version number of the kernel you tested. For example:
kernel-fixed-upstream-v3.11-rc5

This can be done by clicking on the yellow circle with a black pencil icon next to the word Tags located at the bottom of the bug description. As well, please remove the tag:
needs-upstream-testing

If the mainline kernel does not fix this bug, please add the following tags:
kernel-bug-exists-upstream
kernel-bug-exists-upstream-VERSION-NUMBER

As well, please remove the tag:
needs-upstream-testing

If you are unable to test the mainline kernel, please comment as to why specifically you were unable to test it and add the following tags:
kernel-unable-to-test-upstream
kernel-unable-to-test-upstream-VERSION-NUMBER

Once testing of the upstream kernel is complete, please mark this bug's Status as Confirmed. Please let us know your results. Thank you for your understanding.