Latest working kernel version: none
Earliest failing kernel version: don't know
Distribution: Ubuntu 8.10 (Kernel is self compiled from ftp.kernel.org)
Hardware Environment: Dell XPS 1530M (Laptop)
Software Environment: 
Problem Description: 
Sometimes i can use the wlan-card, sometimes not. It's randomly. I just have to reboot and then it works or not.

Steps to reproduce: Start the Computer. Sometimes wlan works, sometimes not. I tried the Kernel from ftp.kernel.org and also the official kernel from ubuntu 8.04 and 8.10.


When the driver does not work i see the following error-messages:

$dmesg |grep iwl
[   17.337238] iwl3945: Intel(R) PRO/Wireless 3945ABG/BG Network Connection driver for Linux, 1.2.26kds
[   17.337243] iwl3945: Copyright(c) 2003-2008 Intel Corporation
[   17.337250] bus: 'pci': add driver iwl3945
[   17.337272] bus: 'pci': driver_probe_device: matched device 0000:0b:00.0 with driver iwl3945
[   17.337274] bus: 'pci': really_probe: probing driver iwl3945 with device 0000:0b:00.0
[   17.337320] iwl3945 0000:0b:00.0: enabling device (0000 -> 0002)
[   17.337331] iwl3945 0000:0b:00.0: PCI INT A -> GSI 17 (level, low) -> IRQ 17
[   17.337350] iwl3945 0000:0b:00.0: setting latency timer to 64
[   17.337373] iwl3945: Detected Intel Wireless WiFi Link 3945ABG
[   17.357797] iwl3945: Error: saturation power is -1, less than minimum expected 40
[   17.357800] iwl3945: Invalid power index
[   17.357803] iwl3945: initializing regulatory failed: -5
[   17.357895] iwl3945 0000:0b:00.0: PCI INT A disabled
[   17.357907] iwl3945: probe of 0000:0b:00.0 failed with error -5

( ^^ /var/log/syslog has the same message)

$lsmod |grep iwl
iwl3945               173172  0 
rfkill                 17304  1 iwl3945
mac80211              214004  1 iwl3945
led_class              12292  1 iwl3945
cfg80211               32520  2 iwl3945,mac80211


What more information do you need? 


Best regards,
Tom