Atheros AR5212 poor connection speed
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
Linux |
Fix Released
|
Medium
|
|||
linux (Ubuntu) |
Won't Fix
|
Medium
|
Unassigned |
Bug Description
I'm opening this new bug on behalf of bug reporter Christansen (lpid: happylinux). Will attach the relevant debug files and comments they originally posted to bug 461419:
Christiansen wrote:
"The information collected was using the Karmic RC Live CD and default ath5k module from the linux-image. Connectionspeed was checked several times using the ISPs reliable internet speed test, and the result was less than 256Kbit/ps downspeed and very unstable - link was checked to more than 2 Mbit/ps with an other Kubuntu 8.04 with the default ath_pci module loaded, this was done in between the Karmic RC tests - The boxes was connected to the AP one at a time, and no other access for other client boxes was allowed.
The LBM was tested on an new installed Karmic RC fra the same live CD and on the same box, and was updated with all updates including the the LBM. The test results was even worse than with the default ath5k module.
A test on an enterprise Cisco WiFi network was done too with the same box, and the connection speed was even less than with the default module and wireless stack.
Compiling an ath-pci module from source (Ver. 10.0.5.6), and loading the module on the other hand showed the expected connection speed on the enterprise network, which is approximately 18.000 Kbit/ps (18 Mbps effective on a 54G network).
I then successfully compiled the the wireless-compat stack dated 2009-10-27, and loaded the ath5k module without any errors seen in dmesg. Ran a connection speed test and got same result as with the LBM module, rebooted and reran the test with same bad result. So unfortunately it seems like the bug is still present in the latest modules too.
Modules loaded after "sudo make install" was:
ath5k 122372 0
mac80211 210508 1 ath5k
ath 8828 1 ath5k
cfg80211 131048 3 ath5k,mac80211,ath
led_class 4096 2 ath5k,thinkpad_acpi
"
Changed in linux: | |
status: | Unknown → Confirmed |
tags: | added: kernel-needs-review kernel-net |
Changed in linux: | |
status: | Confirmed → Fix Released |
Changed in linux: | |
importance: | Unknown → Medium |
Hi Christiansen,
Thanks for all the great testing and information you provided. I've since opened a bug upstream for you as well. If you can, please subscribe yourself to that the upstream bug and follow up with any questions/comments posted by any upstream developers in that bug.
http:// bugzilla. kernel. org/show_ bug.cgi? id=14511