Wireless kernel module seems to "drop out"

Hi,
I recently installed arch with gnome and networkmanager. Everything is ok execpt that my wireless card seems to stop functioning at random times for 2 seconds and then work again, the module seems to "drop out of the kernel" and come back online again. I have intel pro wireless 3945ABG and insalled the iwl3945 module. Anybody know what's the problem.
Thanks

zenlord wrote:
If you're using the 2.6.30-kernel, you should try and downgrade to .29.
I'm having the same issues using the ath9k-driver (weak signal strength, frequent disconnections, low speeds) and downgrading works for me. Your problem might be related.
How do you downgrade? I suspect this is my issue as well. Also once I do downgrade, how do I prevent pacman from auto-maticly upgrading it again?
Last edited by nebri (2009-07-10 15:15:14)

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btusb 12372 0
bluetooth 192120 2 btusb
fuse 69173 3
joydev 9991 0
nvidia 11219870 43
ir_lirc_codec 4027 0
lirc_dev 9039 1 ir_lirc_codec
ir_mce_kbd_decoder 3254 0
ir_sanyo_decoder 1613 0
ir_sony_decoder 1579 0
ir_jvc_decoder 1673 0
ir_rc6_decoder 2153 0
arc4 2039 2
ir_rc5_decoder 1609 0
ir_nec_decoder 1705 0
snd_hda_codec_si3054 3534 1
snd_hda_codec_realtek 61193 1
uvcvideo 72787 0
ath9k 99678 0
ath9k_common 2096 1 ath9k
videobuf2_vmalloc 2468 1 uvcvideo
ath9k_hw 339155 2 ath9k_common,ath9k
videobuf2_memops 2246 1 videobuf2_vmalloc
videobuf2_core 24030 1 uvcvideo
videodev 100859 2 uvcvideo,videobuf2_core
sdhci_pci 10833 0
coretemp 6070 0
kvm_intel 124749 0
snd_hda_intel 26180 3
kvm 373917 1 kvm_intel
sdhci 23694 1 sdhci_pci
acpi_cpufreq 5933 1
mperf 1267 1 acpi_cpufreq
firewire_ohci 31941 0
iTCO_wdt 5255 0
rc_rc6_mce 1380 0
snd_hda_codec 98033 3 snd_hda_codec_realtek,snd_hda_codec_si3054,snd_hda_intel
mmc_core 82754 2 sdhci,sdhci_pci
button 4662 0
intel_agp 10744 0
firewire_core 53173 1 firewire_ohci
psmouse 71909 0
iTCO_vendor_support 1929 1 iTCO_wdt
media 10405 2 uvcvideo,videodev
ath 15361 3 ath9k_common,ath9k,ath9k_hw
battery 6773 0
ac 2536 0
video 11276 0
processor 26855 3 acpi_cpufreq
r592 12011 0
mac80211 424764 1 ath9k
memstick 7016 1 r592
serio_raw 4689 0
tg3 139391 0
pcspkr 1899 0
microcode 12377 0
lpc_ich 10609 0
i2c_i801 9571 0
intel_gtt 15659 1 intel_agp
wmi 8379 0
compal_laptop 10890 0
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cfg80211 176994 3 ath,ath9k,mac80211
snd_hwdep 6300 1 snd_hda_codec
snd_pcm 75167 3 snd_hda_codec_si3054,snd_hda_codec,snd_hda_intel
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snd 59989 13 snd_hda_codec_realtek,snd_hda_codec_si3054,snd_hwdep,snd_timer,snd_pcm,snd_hda_codec,snd_hda_intel
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crc_itu_t 1363 1 firewire_core
evdev 10266 13
ene_ir 11590 0
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libphy 19991 1 tg3
rfkill 15604 4 cfg80211,compal_laptop,bluetooth
ext4 440434 4
crc16 1359 2 ext4,bluetooth
jbd2 78751 1 ext4
mbcache 5977 1 ext4
sr_mod 14823 0
cdrom 35520 1 sr_mod
sd_mod 29559 5
ata_generic 3338 0
pata_acpi 3451 0
uhci_hcd 23436 0
ahci 21360 4
libahci 20023 1 ahci
ata_piix 23352 0
libata 167683 5 ahci,pata_acpi,libahci,ata_generic,ata_piix
scsi_mod 133386 3 libata,sd_mod,sr_mod
ehci_hcd 41816 0
usbcore 150398 4 btusb,uhci_hcd,uvcvideo,ehci_hcd
usb_common 954 1 usbcore
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00:01.0 PCI bridge: Intel Corporation Mobile PM965/GM965/GL960 PCI Express Root Port (rev 0c)
00:1a.0 USB controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #4 (rev 03)
00:1a.1 USB controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #5 (rev 03)
00:1a.7 USB controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #2 (rev 03)
00:1b.0 Audio device: Intel Corporation 82801H (ICH8 Family) HD Audio Controller (rev 03)
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00:1c.1 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 2 (rev 03)
00:1c.2 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 3 (rev 03)
00:1c.3 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 4 (rev 03)
00:1c.4 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 5 (rev 03)
00:1c.5 PCI bridge: Intel Corporation 82801H (ICH8 Family) PCI Express Port 6 (rev 03)
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00:1d.1 USB controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #2 (rev 03)
00:1d.2 USB controller: Intel Corporation 82801H (ICH8 Family) USB UHCI Controller #3 (rev 03)
00:1d.7 USB controller: Intel Corporation 82801H (ICH8 Family) USB2 EHCI Controller #1 (rev 03)
00:1e.0 PCI bridge: Intel Corporation 82801 Mobile PCI Bridge (rev f3)
00:1f.0 ISA bridge: Intel Corporation 82801HM (ICH8M) LPC Interface Controller (rev 03)
00:1f.1 IDE interface: Intel Corporation 82801HM/HEM (ICH8M/ICH8M-E) IDE Controller (rev 03)
00:1f.2 SATA controller: Intel Corporation 82801HM/HEM (ICH8M/ICH8M-E) SATA Controller [AHCI mode] (rev 03)
00:1f.3 SMBus: Intel Corporation 82801H (ICH8 Family) SMBus Controller (rev 03)
01:00.0 VGA compatible controller: NVIDIA Corporation G84 [GeForce 8600M GT] (rev a1)
04:00.0 Ethernet controller: Broadcom Corporation NetLink BCM5787M Gigabit Ethernet PCI Express (rev 02)
0c:00.0 Network controller: Atheros Communications Inc. AR5418 Wireless Network Adapter [AR5008E 802.11(a)bgn] (PCI-Express) (rev 01)
0e:06.0 FireWire (IEEE 1394): Ricoh Co Ltd R5C832 IEEE 1394 Controller (rev 05)
0e:06.1 SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter (rev 22)
0e:06.2 System peripheral: Ricoh Co Ltd R5C592 Memory Stick Bus Host Adapter (rev 12)
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[ 1316.731261] wlan0: authenticate with 00:24:17:f1:6c:bf
[ 1316.734194] wlan0: send auth to 00:24:17:f1:6c:bf (try 1/3)
[ 1316.759285] wlan0: authenticated
[ 1316.763262] wlan0: associate with 00:24:17:f1:6c:bf (try 1/3)
[ 1316.767549] wlan0: RX AssocResp from 00:24:17:f1:6c:bf (capab=0x411 status=0 aid=5)
[ 1316.767664] wlan0: associated
[ 1316.768426] wlan0: disassociating from 00:24:17:f1:6c:bf by local choice (reason=3)
[ 1316.780126] cfg80211: Calling CRDA to update world regulatory domain
[ 1316.780767] wlan0: deauthenticating from 00:24:17:f1:6c:bf by local choice (reason=3)
[ 1316.780786] ath: phy0: TX while HW is in FULL_SLEEP mode
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Last edited by justifier (2012-11-12 21:21:07)

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wlan0: Association request to the driver failed
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wlan0: CTRL-EVENT-DISCONNECTED bssid=00:24:17:f1:6c:bf reason=0
wlan0: Trying to associate with 00:24:17:f1:6c:bf (SSID='BTHomeHub2-4P9Q' freq=2457 MHz)
wlan0: Association request to the driver failed
wlan0: Associated with 00:24:17:f1:6c:bf
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Wireless Dropping out

Hello.
It does seem like a usual post here, but my wireless connection constantly drops out.
However, it is only when there is a download.
I gather that I'll probably get a "try changing the channel as you're dropping out due to interference" response, however, I would like to understand why this is only happening during downloads.
Issue and Situation
Upon attempting downloads (software patches, game patches, software download, etc), I lose my connection to the wireless 3-4 minutes after the download.
If I do not download, I never lose my connection.
The wireless will not let me connect back to it, unless I reset the router.
The wireless is in the room above me. It's a BT Home Hub v2.
If I put my computer right next to the router, I do not lose my connection to the wireless during download (hence it must be a frequency issue).
I have never had the issue in the past 7 months, it only suddenly happened 2 weeks ago.
As I said, I want to know why , especially why it won't let me connect back to it, as I gather I'm going to have to change the router frequency. (On a side note, given I have 7 BT wireless, 1 BTFON, 1BTOpenzone, and 3 Sky routers in range, what frequency would be best?)

you can try downloading inssider2 (istumbler if MAC) and then run it. This will show the broadcasting networks round about you and their channels including your own. If you then enter your router and change your wireless channel to a free or less congested channel.
this takes the guesswork out of channel selection
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PDA ADHOC ETHERNET WIRELESS DROPS OUT

I'm utilizing an AD-HOC computer to computer wireless Ethernet connection between my laptop and my PDA to transfer data between my laptop and PDA.
The LabVIEW application on the PDA runs great once I have a good wireless Ethernet radio connection! However, I am having continuous trouble with the wireless Ethernet radio connection. It can take minutes to finally establish connection at times, sometimes it won't connect for hours, sometimes it will connect immediately. The signal strength meter on the PDA will go from good to best to good to dropping out entirely. Some days it works great, connects quickly, and stays connected. Some days it hardly connects at all. It all appears only to happen in my work environment, which includes being in a building and also outside on a test track. I tried the system at home over a recent 4 day holiday. The system connected immediately, and stayed connected every time for the entire four days. I would shutdown and re-connect from time to time. Every time the response was excellent.
I'm thinking that I may be having some type of radio interference problem at work. I've tried 9 different broadcast frequencies to no avail. Is there a way of increasing the signal strength of the radio frequency being transmitted from the PDA? Something I'm missing?
The Dell Axim 51V PDA is running windows mobile with the latest bios upgrade. The latest bios version hasn't offered any soultion. I also have the same issues with a Dell Axim 3.1 PDA running pocket PC 2003.

You don't say which WIFI you are using but the following is applicable to 54g and the older standard.
This is the nature of WIFI but you can improve matters.... If someone has one of those television transmitters that uses WIFI 2.4Ghz you are probably shot although I can report that the XBOX 360 controllers seem to exist very happily....
Set the data rate as low as possible to support the application and also set the Fragment Threshold and RTS thresholds lower (750 from 2500).
You may also find it helpfull to turn of auto channel hopping and fix the channel as well as turning off features such as pre-amble length detection and if there is a roaming decision parameter adjust it for distance rather than throughput. Turn it off if you can.
I also found that fixing IP addresses routes etc. seems to help as well and it seems more tolerant of drop outs as a result.
This is generally in the configuration parameters for the hardware.
This will need to be done at both ends.... I suspect however that an access point would be better as the antenna location will or should be optimised That's one reason why people use them. In an industrial context the best I have seen to date is the CISCO stuff but it costs....
Message Edité par Conseils le 05-13-2006 10:06 PM

Wireless kernel module seems to "drop out"

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