#2080: Problem seeing Linksys WRT54GSv5 AP with D-Link DWL-G650 rev. C1 with
MadWifi 0.9.4
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 Reporter:  [EMAIL PROTECTED]  |             Type:  defect
   Status:  new                         |         Priority:  minor 
Component:  madwifi: other              |          Version:  v0.9.4
 Keywords:                              |   Patch_attached:  0     
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 Problems began after scrubbing my laptop an going to Ubuntu 8.04LTS

 == AP Details ==

 Linksys WRT54GSv5 running replacement firmware: DD-WRT v24 (05/24/08)
 micro (Broadcom hardware)
 Configured as AP with WPA-Personal and TKIP, SSID Broadcast ON

 == Previous configuration '''''(worked)''''' ==

 Dual boot

 1. Windows XP Pro running D-Link's driver version 3.7.1

 2. Xubuntu 6.10 running MadWifi 0.9.2.1

 Operation

 Wireless NIC was able to scan and see my AP as well as other neighboring
 APs. It was able to associate with my AP normally and ''operated
 perfectly.''

 == New configuration '''''(does not work)''''' ==

 Crufty XP installation and end of Ubuntu Edgy Eft support prompted scrub
 and reload of OSes.

 Dual boot

 1. Windows XP Professional running D-Link driver new WHQL certified
 version 4.4

 2. Ubuntu 8.04LTS running MadWifi 0.9.4

 Operation

 Windows XP with new driver '''did not see my AP''', but ''did'' see
 neighboring APs (open, WEP listed).

 Reverted to the 3.7.1 D-Link driver, restoring normal operation. I could
 then see and associate with my AP OK.

 In Ubuntu, I had the same behavior as in XP. I could see neighboring APs
 (open, WEP, and one WPA listed). But, I could not see my own.

 I removed '''MadWifi 0.9.4''' and tried '''ath5k''' using the compat-
 wireless download method (avoids kernel compile); the date code of my
 download was compat-wireless-2008-07-30. This compiled and built normally.

 ''The ath5k driver was able to see my AP and has so far been working
 perfectly.''

 == The Challenge ==

 Because my experiences with the new MadWifi driver seem to parallel my
 experiences with the new D-Link provided driver for Windows XP, I believe
 there may be a common thread to the differences in these two drivers.
 Perhaps the HAL binary (this same control logic must also exist in some
 form in the Windows driver) is functionally different somehow between the
 two Windows driver versions and also the two MadWifi versions.

 I tried to use MadWifi 0.9.2.1 and 0.9.3 on my new Ubuntu load, but I
 could not get either to build (it seems wireless extensions to the kernel
 have made significant progress/changes, rendering the code incompatible
 without modification my system's kernel ''2.6.24-19-generic'').

 After some lengthy googling, it appears I am the first to report such a
 conflict. This could be because the problem may only appear in certain
 combinations of AP and client NIC hardware.

 I have a working client using ath5k, so I am mostly satisfied. Should I
 need to make my card act as an AP, it's unclear if MadWifi 0.9.4 will
 work, and the strangeness I've observed might portend incompatibilities
 with clients trying to join up. ath5k has no AP support yet.

 No one has complained about the D-Link 4.4 driver version on Windows.
 Again, this may be because other APs in the field are not turning out to
 be incompatible, as mine seems to be.

 This makes me wonder if the trouble is some small difference in how my AP
 operates vs. the other APs visible on my scans, previously innocuous but
 now fatal with new client driver code. Or, if the real problem is the
 driver code. The fact of identical behavior on the Linux and Windows sides
 suggests the potential for some deep cross-platform connection in this
 issue.

 I would classify this issue as a curiosity, given that ath5k is working
 for me.

 Great work MadWifi Team!!!

 -Andrew Skretvedt

-- 
Ticket URL: <http://madwifi.org/ticket/2080>
madwifi.org <http://madwifi.org/>
Multiband Atheros Driver for Wireless Fidelity
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