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#1 2013-02-17 11:44:53

Chais
Member
Registered: 2011-08-08
Posts: 32

[Solved] Ralink RT3062 connection breaks down under high load

Since a couple of days (I assume with the update to 3.7.5 or 3.7.6) My WiFi connection will break down if the load is too high (like YT 720p)
So far I figured out that the problem existed before, but was solved with a driver update.

uname -a:

Linux hostname 3.7.8-1-ARCH #1 SMP PREEMPT Fri Feb 15 03:39:05 EET 2013 x86_64 GNU/Linux

iwconfig wlan0:

wlan0     IEEE 802.11bgn  ESSID:"Something"  
          Mode:Managed  Frequency:2.422 GHz  Access Point: 00:00:00:00:00:00
          Bit Rate=130 Mb/s   Tx-Power=20 dBm
          Retry  long limit:7   RTS thr:off   Fragment thr:off
          Power Management:off
          Link Quality=54/70  Signal level=-56 dBm
          Rx invalid nwid:0  Rx invalid crypt:0  Rx invalid frag:0
          Tx excessive retries:341  Invalid misc:168   Missed beacon:0

lspci -vvs:

Network controller: Ralink corp. RT3062 Wireless 802.11n 2T/2R
Subsystem: Edimax Computer Co. Device 7722
Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV+ VGASnoop- ParErr- Stepping- SERR+ FastB2B- DisINTx-
Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=slow >TAbort- <TAbort- <MAbort- >SERR- <PERR- INTx-
Latency: 64 (500ns min, 1000ns max), Cache Line Size: 64 bytes
Interrupt: pin A routed to IRQ 21
Region 0: Memory at fbbf0000 (32-bit, non-prefetchable) [size=64K]
Capabilities: [40] Power Management version 3
	Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA PME(D0-,D1-,D2-,D3hot-,D3cold-)
	Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
Kernel driver in use: rt2800pci

Any help is appreciated.

Last edited by Chais (2013-03-16 10:00:52)


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Chais

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#2 2013-02-17 13:09:10

Roken
Member
From: UK
Registered: 2012-01-16
Posts: 666

Re: [Solved] Ralink RT3062 connection breaks down under high load

I have exactly the same card and haven't had any problems with it. The only differences I can see are my latency is 32 and cache line size is 4 bytes.

Everything else looks the same, so doesn't look like a driver problem.


[img=Speedtest]http://www.speedtest.net/my-result/5145583518[/img]

Nvidia GTX 670 2Gb, AMD Phenom II X4 (965BE) @ 3.6 Ghz (Overclocked) 8GB RAM
Linux user #545703

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#3 2013-02-17 15:04:45

Chais
Member
Registered: 2011-08-08
Posts: 32

Re: [Solved] Ralink RT3062 connection breaks down under high load

Weirdest thing. I rolled back to 3.7.5, to see if it works. It did. Updated to 3.7.8 again and it still does. So either it was some package that was updated too, or something went wrong with the first update...
Although I like problems that solve themselves that's kinda weird.


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Chais

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#4 2013-03-08 10:31:22

Chais
Member
Registered: 2011-08-08
Posts: 32

Re: [Solved] Ralink RT3062 connection breaks down under high load

I reinstalled due to a HDD replacement and my inability to make a proper backup. Since then I'm bugged by this issue again. Additionally the connection breaks down randomly. Could be a reception or interference issue, but the card works just fine with Windoze (parallel install) so it seems less likely.
journalctl shows me the infamous deathenticating due to local choice (reason=3)
So far I tried disabling the IPv6 stack, without success, and using netcfg instead of networkmanager, without success as well. Using the proprietary driver got me a kernel panic.
I have no idea what else to try... Please help.


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Chais

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#5 2013-03-16 10:00:34

Chais
Member
Registered: 2011-08-08
Posts: 32

Re: [Solved] Ralink RT3062 connection breaks down under high load

Solved by getting a new WiFi card with an Atheros chipset. And that's still cheaper than a 20m cat6 cable...


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Chais

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