Public bug reported:
I'm using karmic (with latest updates) and I experienced my Intel Wifi Link
5300 sometimes fails to operate after system startup. dmesg gives repeatedly
"iwlagn 0000:03:00.0: ERROR: No TX rate available." (see attachment). A dhcp
lease is aquired, but no further data transmission is possible. Reboot
sometimes helps, but often several reboots are required until I can get this to
work. Unloading and reloading the iwlagn modules does NOT help.
If it works after a startup, it does so at excellent speed and stability for
hours even at high thoughput rates.
This behavior is unchanged from 2.6.31-5-generic up to 2.6.31-8-generic
(versions before I did not try).
This bug only appears when using the 5GHz band, 2.4GHz is unaffected.
Since ubuntu-bug does not open a window after colecting and sending data
I have to report this one this way.
Googling about that gives only one serious hit, but there it is some
incombatibility with the closed-source fglrx-driver, wich in my case is
not in use (not even installed).
Additional Information:
System: Lenovo ThinkPad T500 with Intel WiFi Link 5300 (a/g/n) using Kubuntu
Karmic amd64
WLAN-AP: Linksys WRT610N using latest stock firmware
WLAN-Config: WPA2 (AES), N-Standard only in 5GHz band, wide channels (40MHz),
automatic frequency selection activated
Please see attached dmesg-logs.
** Affects: ubuntu
Importance: Undecided
Status: New
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[karmic] Intel WiFi Link 5300 sometimes not working on 5 GHz
https://bugs.launchpad.net/bugs/420678
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