ath5k driver (AR2413): dropped packets, high latency

ping showing the bug under the 2.6.32 kernel

ping on 2.6.33 kernel - bug free!

Forgot to mention: this bug also affected me in Karmic, and was fixed by using the 2.6.33-rc4 kernel.

having the same problem but installing linux-image-2.6.33-020633-generic_2.6.33-020633_i386.deb did make it even worse, now i even can't connect to the network, i really need to get this to work because it isn't my laptop (and the owner wants it back in about a week an he doesn't know anything about linux (under the hood i mean)

Interesting. I'm on amd64. I wonder does your laptop processor support 64-bit?

Also, are you sure the problem isn't higher up the stack? Can you see networks to connect to using iwlist scan ?

I can confirm this bug on Lucid RC. I took a different path to circumvent the problem: I installed the madwifi module (yeah, I know, I know, but it was a pragmatic choice), and now the problem in gone.

I have the very same chipset as scomar.

I would try the mainline kernel one of these days. But I will also follow the development of this bug

Hi scomar,

If you could also please test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text. Please let us know your results.

Thanks in advance.

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I have tried the mainline kernel, 2.6.34rc7, but the problem persists... Do you have any idea what would be going on? Routing, IPV6, wrong module parameters for our chipset? I would like to test another thing,

I have the exact same problem. Firefox had timeouts and extremely long hangs loading pages. I did not test other GUI apps. However, I could use the terminal to run updates (apt-get).

By chance, I found this behavior was linked to wireless security. Once I removed all my wireless security, web browsing worked normally. I tried using both WEP 128 bit encryption, and WPA2. I had the same issue both times, pages (namely ubuntu.com) would not load or would hang somewhere along the way.

PERHAPS THE ORIGINAL AUTHOR MIGHT KNOW A BETTER PACKAGE HINT, AS I AM NOT TECH SAVVY ENOUGH TO
SUGGEST THE CORRECT ONE.

Excerpt from my lspci -vnn output:

09:04.0 Ethernet controller [0200]: Atheros Communications Inc. AR2413 802.11bg NIC [168c:001a] (rev 01)
 Subsystem: Askey Computer Corp. Device [144f:7094]
 Flags: bus master, medium devsel, latency 168, IRQ 22
 Memory at c0110000 (32-bit, non-prefetchable) [size=64K]
 Capabilities: <access denied>
 Kernel driver in use: ath5k
 Kernel modules: ath5k

I'd like to add one more comment to the above. When my wireless access point was set to use WEP or WPA2, in both cases, I had an incident where my processor kept running at 100 percent when it tried to load a page. It stayed at 100 percent even after closing Firefox. Whatever it was, it did not show up on the process list on the system monitor. It could only be stopped by either logging out or restarting. This, along with the other issues mention above, vanished when using an unsecured connection.

I forgot one more detail that might be useful. I could log in to the router and change the security settings using AR2413 wireless.

I am having the same issue on my 32 bit laptop, everything was ok until karmic. i am still using jaunty because of it.

I seem to be having the same issues as exogenetic. I've got the same card too. With encryption, either wep or wpa, the card drops packets. Without encryption, things work fine. This card used to work fine with the old madwifi drivers.
Using kernel 2.6.33.5-lucid doesn't solve the problem.

sml, 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 (not the daily folder) following https://wiki.ubuntu.com/KernelMainlineBuilds ? It will allow additional upstream developers to examine the issue. 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-v3.13-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

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.

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]