rt73usb performance poor when weak signal

Bug #444377 reported by Ike Panhc
This bug affects 1 person
Affects Status Importance Assigned to Milestone
linux-backports-modules-2.6.24 (Ubuntu)
Ike Panhc

Bug Description

SRU Justification:

Impact: When the wifi signal is weak, the rt73usb driver has a poor performance

Fix: Two patches, one to take hardcoded values for certain timings (which proved to be better) and one to report the retry and fail count to mac80211.

Testcase: Results in a clean open site environment:

Signal Level Driver without these patches Driver with these patches
                        (downlink) / (uplink) (downlink) / (uplink)
    -40 23.68 / 21.73 22.94 / 21.41
    -62 24.62 / 21.87 22.33 / 21.08
    -67 5.25 / 2.67 11.83 / 10.47
    -82 0.16 / 0 0.16 / 0.6
    (dbm) (in Mbps) (in Mbps)

Binary package hint: linux-backports-modules-2.6.24-24-lpia

Ike Panhc (ikepanhc)
Changed in linux-backports-modules-2.6.24 (Ubuntu):
status: New → In Progress
importance: Undecided → High
assignee: nobody → Ike Panhc (ikepanhc)
Stefan Bader (smb)
Changed in linux-backports-modules-2.6.24 (Ubuntu):
status: In Progress → Fix Committed
Stefan Bader (smb)
description: updated
Revision history for this message
Martin Pitt (pitti) wrote : Please test proposed package

Accepted linux-backports-modules-2.6.24 into hardy-proposed, the package will build now and be available in a few hours. Please test and give feedback here. See https://wiki.ubuntu.com/Testing/EnableProposed for documentation how to enable and use -proposed. Thank you in advance!

tags: added: verification-needed
Revision history for this message
Launchpad Janitor (janitor) wrote :

This bug was fixed in the package linux-backports-modules-2.6.24 - 2.6.24-26.35

linux-backports-modules-2.6.24 (2.6.24-26.35) hardy-proposed; urgency=low

  [Ike Panhc]

  * rt2x00: Hardcode TX ack timeout and consume time
    - LP: #444377
  * SAUCE: Report TX retry and fail count to mac80211 in rt73usb
    - LP: #444377
 -- Stefan Bader <email address hidden> Tue, 08 Dec 2009 11:00:24 +0100

Changed in linux-backports-modules-2.6.24 (Ubuntu):
status: Fix Committed → Fix Released
Revision history for this message
Martin Pitt (pitti) wrote :

Copied to hardy-updates after confirmation from Stefan Bader.

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