hello,

i've read a lot of forums, but found no solution. My network card randlomly disconnects.

I have intel wireless 5300 card:

root@paci-laptop:~# lspci -vv -s 02:00.0
02:00.0 Network controller: Intel Corporation PRO/Wireless 5300 AGN [Shiloh] Network Connection
	Subsystem: Intel Corporation Device 1001
	Control: I/O- Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
	Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
	Latency: 0, Cache Line Size: 64 bytes
	Interrupt: pin A routed to IRQ 29
	Region 0: Memory at f6000000 (64-bit, non-prefetchable) [size=8K]
	Capabilities: [c8] Power Management version 3
		Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA PME(D0+,D1-,D2-,D3hot+,D3cold+)
		Status: D0 PME-Enable- DSel=0 DScale=0 PME-
	Capabilities: [d0] Message Signalled Interrupts: Mask- 64bit+ Queue=0/0 Enable+
		Address: 00000000fee0300c  Data: 41b1
	Capabilities: [e0] Express (v1) Endpoint, MSI 00
		DevCap:	MaxPayload 128 bytes, PhantFunc 0, Latency L0s <512ns, L1 unlimited
			ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset+
		DevCtl:	Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
			RlxdOrd+ ExtTag- PhantFunc- AuxPwr- NoSnoop+ FLReset-
			MaxPayload 128 bytes, MaxReadReq 128 bytes
		DevSta:	CorrErr+ UncorrErr- FatalErr- UnsuppReq+ AuxPwr+ TransPend-
		LnkCap:	Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Latency L0 <128ns, L1 <32us
			ClockPM+ Suprise- LLActRep- BwNot-
		LnkCtl:	ASPM L1 Enabled; RCB 64 bytes Disabled- Retrain- CommClk+
			ExtSynch- ClockPM+ AutWidDis- BWInt- AutBWInt-
		LnkSta:	Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
	Capabilities: [100] Advanced Error Reporting <?>
	Capabilities: [140] Device Serial Number 4e-4e-36-ff-ff-ea-16-00
	Kernel driver in use: iwlagn
	Kernel modules: iwlagn

When it disconnects...i can just in Network manager click on the same wireless network and it goes on, or just running:

iwlist wlan0 scan

establishes the connection back.

I am streaming DVB-T video over network, i can reproduce bug in every 2-5 mins, when there is big network traffic. When just browsing web pages, it disconnects at about once per hour. No issues in windows or in 8.04.

Here is part of dmesg:

[ 9655.806014] wlan0: authenticate with AP 00:1f:1f:1c:c0:d0
[ 9655.807799] wlan0: authenticated
[ 9655.807806] wlan0: associate with AP 00:1f:1f:1c:c0:d0
[ 9656.004040] wlan0: associate with AP 00:1f:1f:1c:c0:d0
[ 9656.204273] wlan0: associate with AP 00:1f:1f:1c:c0:d0
[ 9656.404284] wlan0: association with AP 00:1f:1f:1c:c0:d0 timed out
[ 9662.811815] wlan0: authenticate with AP 00:1f:1f:1c:c0:d0
[ 9662.813781] wlan0: authenticated
[ 9662.813788] wlan0: associate with AP 00:1f:1f:1c:c0:d0
[ 9662.818953] wlan0: RX AssocResp from 00:1f:1f:1c:c0:d0 (capab=0x411 status=0 aid=1)
[ 9662.818962] wlan0: associated
[ 9676.671110] iwlagn 0000:02:00.0: iwl_tx_agg_start on ra = 00:1f:1f:1c:c0:d0 tid = 0
[ 9676.671162] iwlagn 0000:02:00.0: HW queue is empty
[ 9941.933850] wlan0: authenticate with AP 00:1f:1f:1c:c0:d0
[ 9941.935884] wlan0: authenticated
[ 9941.935891] wlan0: associate with AP 00:1f:1f:1c:c0:d0
[ 9941.950538] wlan0: disassociating by local choice (reason=3)
[ 9942.132072] wlan0: associate with AP 00:1f:1f:1c:c0:d0
[ 9942.332257] wlan0: associate with AP 00:1f:1f:1c:c0:d0
[ 9942.532084] wlan0: association with AP 00:1f:1f:1c:c0:d0 timed out
[ 9948.924306] wlan0: authenticate with AP 00:1f:1f:1c:c0:d0
[ 9948.926320] wlan0: authenticated
[ 9948.926328] wlan0: associate with AP 00:1f:1f:1c:c0:d0
[ 9948.930086] wlan0: RX AssocResp from 00:1f:1f:1c:c0:d0 (capab=0x411 status=0 aid=1)
[ 9948.930094] wlan0: associated
[ 9954.370331] iwlagn 0000:02:00.0: iwl_tx_agg_start on ra = 00:1f:1f:1c:c0:d0 tid = 0
[ 9954.370385] iwlagn 0000:02:00.0: HW queue is empty
[10144.747020] wlan0: disassociating by local choice (reason=3)
[10159.058003] wlan0: deauthenticated (Reason: 6)
[10159.059740] wlan0: authenticate with AP 00:1f:1f:1c:c0:d0
[10159.061761] wlan0: authenticated
[10159.061768] wlan0: associate with AP 00:1f:1f:1c:c0:d0
[10159.068300] wlan0: RX AssocResp from 00:1f:1f:1c:c0:d0 (capab=0x411 status=0 aid=1)
[10159.068309] wlan0: associated
[10163.637663] iwlagn 0000:02:00.0: iwl_tx_agg_start on ra = 00:1f:1f:1c:c0:d0 tid = 0
[10163.637717] iwlagn 0000:02:00.0: HW queue is empty


here is part of /var/log/messagesJul 10 16:21:00 paci-laptop kernel: [ 9136.990539] iwlagn 0000:02:00.0: iwl_tx_agg_start on ra = 00:1f:1f:1c:c0:d0 tid = 0
Jul 10 16:22:08 paci-laptop kernel: [ 9204.774855] iwlagn 0000:02:00.0: iwl_tx_agg_start on ra = 00:1f:1f:1c:c0:d0 tid = 0
Jul 10 16:30:00 paci-laptop kernel: [ 9676.671110] iwlagn 0000:02:00.0: iwl_tx_agg_start on ra = 00:1f:1f:1c:c0:d0 tid = 0
Jul 10 16:34:38 paci-laptop kernel: [ 9954.370331] iwlagn 0000:02:00.0: iwl_tx_agg_start on ra = 00:1f:1f:1c:c0:d0 tid = 0
Jul 10 16:38:07 paci-laptop kernel: [10163.637663] iwlagn 0000:02:00.0: iwl_tx_agg_start on ra = 00:1f:1f:1c:c0:d0 tid = 0
Jul 10 16:48:56 paci-laptop -- MARK --

(in theese time the connection was ok).

Nothing in syslog, when connection hangs or when re-established using iwlist wlan0 scan.

can i load wireless module with some parameter to log more verbose?