[Bug 528161] Re: Intel wifi cards fail temperature-dependently

[nh2]

updated watch to new upstream bug

** Description changed:

  At university, we suffer from wifi disconnections with notebooks using
  the iwlagn driver, especially with the Intel WiFi 5100 card.
  
  It seems the hotter the air or the device is, the more it rejects to
  connect to any type of wifi network. In dmesg, messages like the
  following appear:
  
  [   84.893229] wlan0: direct probe to 00:1c:4a:44:44:e7 (try 1)
  [   85.092149] wlan0: direct probe to 00:1c:4a:44:44:e7 (try 2)
  [   85.292149] wlan0: direct probe to 00:1c:4a:44:44:e7 (try 3)
  [   85.492147] wlan0: direct probe to 00:1c:4a:44:44:e7 timed out
  [   96.318074] wlan0: direct probe to 00:1c:4a:44:44:e7 (try 1)
  [   96.516177] wlan0: direct probe to 00:1c:4a:44:44:e7 (try 2)
  [   96.716086] wlan0: direct probe to 00:1c:4a:44:44:e7 (try 3)
  [   96.916169] wlan0: direct probe to 00:1c:4a:44:44:e7 timed out
  
  ... and so on.
  
  For some of my friends, the problem is not that serious as it appears only in very hot rooms with their laptops.
  For others, like me, the problem is critical because our machines do not connect to _any_ network if the temperature is below 10°C.
  
  The problem started in January 2010 and (whyever) gets worse. Until
  February, I had decent disconnects, but could still connect at home,
  while now, at the end of February I cannot connect to networks anymore.
  
  I *guess* the problem was introduced with one of the 2.6.32-rc kernels.
  The killer flaw is that it does not go away switching back to one of the
  old kernels (.31 from Karmic, .28 from Jaunty) which worked fine over
  months before or forward to .33.
  
  It seems to have done something hardware/firmware related or any other crazy voodoo.
  The problem is present over (most probably) all distributions - we use Debian, Ubuntu and Arch Linux. It might be possible that more people will run into this with Lucid.
  
- Someone reported it here:
- http://bugzilla.intellinuxwireless.org/show_bug.cgi?id=2157
+ Someone reported it here: new upstream bug: http://bugzilla.intellinuxwireless.org/show_bug.cgi?id=2171
+ (old bug was http://bugzilla.intellinuxwireless.org/show_bug.cgi?id=2157)
  
  This bug is meant as a information collection bug.
  If you suffer from this problem, please post your as much as you can of hardware details, log outputs and state in which situations the bug appears for you (really, please tell if you can better connect from outside buildings when your device is cold). Perhaps we can get enough information to find out what the common problem is.

** Bug watch added: bugzilla.intellinuxwireless.org/ #2171
   http://bugzilla.intellinuxwireless.org/show_bug.cgi?id=2171

** Changed in: intellinuxwireless
       Status: In Progress => Unknown

** Changed in: intellinuxwireless
 Remote watch: bugzilla.intellinuxwireless.org/ #2157 => bugzilla.intellinuxwireless.org/ #2171

-- 
Intel wifi cards fail temperature-dependently
https://bugs.launchpad.net/bugs/528161
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