Bug#582381: linux-image-2.6.32-bpo.3-amd64: No probe response from AP XX:XX:XX:XX:XX:XX after 500ms, disconnecting. - iwl3945
first of all, thanks for answering my email ;-)
I found it was caused by my router, smc-7908/arcadyan ARV7518PW-A-LF-LT.
It seems to be that when signal is not good enough its implementation
only allows clients running windows os to connect.
I have a cordless phone base and when I place it near the router no
machine running linux is capable of connecting,
although some times they connect for 2-3 minutes and disconnect
showing the same error.
I've two laptops (with dual boot, windows and linux) and a computer
with a pci card (running linux).
When running windows it takes them a little bit longer to connect, but
once connected wireless works perfectly.
I fixed it just by removing the cordless phone, but maybe I can help
to find the problem. I answer your questions below.
One more thing:
iwconfig power off
this is a fix only for driver rt2500pci when it fails to enter state 1 (-16):
rt2500pci 0000:02:0a.0: PCI INT A -> GSI 22 (level, low) -> IRQ 22
phy0: Selected rate control algorithm 'minstrel'
Registered led device: rt2500pci-phy0::radio
Registered led device: rt2500pci-phy0::quality
phy0 -> rt2500pci_set_device_state: Error - Device failed to enter
state 1 (-16).
> I suspect the signal is weak.
When I place my laptop below the router the signal is 100%, but the
problem is still there.
> Does this always happen within a few minutes of connecting?
Not always, some times it is not capable of connecting.
> Does the signal strength matter?
I do not think so, but I'm not an expert ... ;-)
> If you have other wireless hardware to try, do they produce the same problem?
Yes. I tested on rt2500pci, Intel(R) Ultimate N WiFi Link 5300 AGN,
and zd1211rw 1-6:1.0: firmware version 4725
(zd1211rw 1-6:1.0: zd1211b chip 0ace:1215 v4810 high 00-1a-ff
AL2230_RF pa0 g--NS)
> Do current kernels behave the same way?
Yes. I now have linux-image-2.6.32-5-686 (2.6.32-35) both in a laptop
and the computer, but I tested bpo kernels in both.
In the other laptop I have linux-image-2.6.39-bpo.2-amd64
Some times they connect for 2-3 minutes and some times they do not connect.
> Does downgrading the kernel to a version that worked before make it go away?
I tried kernels in stable and forcing a downgrade of all packages from
bpo to stable, but it didn't worked.
If you think that this is caused just by the router (I think so), just
close the bug.
I do not know why windows os works, but sw inside this router is a piece of crap
and my only hope is the openwrt guys succeed in running linux on it ...
On Sat, Sep 3, 2011 at 9:04 PM, Jonathan Nieder <email@example.com> wrote:
> Hi Victor,
> Sorry for the delay in replying.
> Victor wrote:
>> [ *876.781575] wlan0: associated
>> [ *876.784594] ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready
>> [ *887.552054] wlan0: no IPv6 routers present
>> [ *889.304076] No probe response from AP 00:22:2d:45:34:f9 after 500ms, disconnecting.
>> [ *892.717637] wlan0: direct probe to AP 00:22:2d:45:34:f9 (try 1)
>> [ *892.816840] wlan0: direct probe responded
>> [ *892.816849] wlan0: authenticate with AP 00:22:2d:45:34:f9 (try 1)
>> [ *892.818986] wlan0: authenticated
>> 03:00.0 Network controller : Intel Corporation Ultimate N WiFi Link 5300 [8086:4236]
>> * * * Kernel driver in use: iwlagn
> Thanks for reporting, and hope that helps,
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