Intel Wifi 1000 iwlwifi - Low bitrate problem

manuelschneid3r · 2013-08-08 18:09:08

My problem :

iwconfig wlp2s0 wrote:

wlp2s0 IEEE 802.11bg ESSID:"Home2"
Mode:Managed Frequency:2.462 GHz Access Point: C8:3A:35:F0:A1:28
Bit Rate=1 Mb/s Tx-Power=14 dBm
Retry long limit:7 RTS thr:off Fragment thr:off
Power Management:off
Link Quality=42/70 Signal level=-68 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:0 Invalid misc:11 Missed beacon:0

cat /etc/modprobe.d/iwlwifi.conf wrote:

options iwlwifi 11n_disable=1

lspci -vvv wrote:

...
Network controller: Intel Corporation Centrino Wireless-N 1000 [Condor Peak]
Subsystem: Intel Corporation Centrino Wireless-N 1000 BGN
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 43
Region 0: Memory at d2500000 (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 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+
Address: 00000000fee0300c Data: 4152
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+ Surprise- 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 v1] Advanced Error Reporting
UESta: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
UEMsk: DLP- SDES- TLP- FCP- CmpltTO- CmpltAbrt- UnxCmplt- RxOF- MalfTLP- ECRC- UnsupReq- ACSViol-
UESvrt: DLP+ SDES- TLP- FCP+ CmpltTO- CmpltAbrt- UnxCmplt- RxOF+ MalfTLP+ ECRC- UnsupReq- ACSViol-
CESta: RxErr- BadTLP+ BadDLLP- Rollover- Timeout- NonFatalErr+
CEMsk: RxErr- BadTLP- BadDLLP- Rollover- Timeout- NonFatalErr+
AERCap: First Error Pointer: 00, GenCap- CGenEn- ChkCap- ChkEn-
Capabilities: [140 v1] Device Serial Number 00-1e-MY-MA-Cx-b4
Kernel driver in use: iwlwifi
Kernel modules: iwlwifi
...

Seriously I am getting crazy. I have wireless problems all around the time. PM is off as listed above. So

# iwconfig wlp2s0 power off

Wont help. Enabling n does not help . Nor do I need it.

How do I get my laptop to receive a proper bitrate?
Just tell me if you need further information.

Regards

Last edited by manuelschneid3r (2013-08-08 18:24:25)

Strike0 · 2013-08-08 21:31:37

HI,
please use [ code] tags for code output next time!

I would leave everything normal (no wifi-n and powersave disable). If you don't want to use N, the proper way is to set it to G-mode per connection. If the router supports G, the card will choose that. You can see that it does in your iwconfig output right at the beginning.

To your problem: The bitrate reported should change depending on net load or link quality.
If you're link is fairly good, it will go up when you download/stream something. It goes down to save power when the bandwith is not needed (or there are wifi troubles, like a bad link quality or interfering signals).

How did you test it? The 1MB/s does not move?

WonderWoofy · 2013-08-08 22:46:27

Strike0 wrote:

To your problem: The bitrate reported should change depending on net load or link quality.
If you're link is fairly good, it will go up when you download/stream something. It goes down to save power when the bandwith is not needed (or there are wifi troubles, like a bad link quality or interfering signals).

This is indeed how it should function. Intel cards seem to be particularly good at fluctuating the bitrate depending on the load.

manuelschneid3r · 2013-08-08 23:26:53

Strike0 wrote:

To your problem: The bitrate reported should change depending on net load or link quality.
If you're link is fairly good, it will go up when you download/stream something. It goes down to save power when the bandwith is not needed (or there are wifi troubles, like a bad link quality or interfering signals).

Well I'am embarrassed. This obviously "solved" the nonexistent problem. I encountered this low bitrate due to conky. (<- is this correct english?) ( http://i.imgur.com/moT6CJ3.jpg ) I watched this value a long time, assuming that it would never change. My fault was to believe that it's static, and as long as I am wired via Ethernet, there's no need for the wireless interface to do any action. The only problem was me, blaming intel for stuff I didnt know
Thank you WonderWoofy and Strike0 for starting me off.

**EDIT**

Shame on me! I just stumbled upon a thread in which WW was telling me the same just 3 months ago. I should try this Ginkgo stuff

Regards

Last edited by manuelschneid3r (2013-08-08 23:47:55)

WonderWoofy · 2013-08-08 23:48:30

manuelschneid3r wrote:

...I encountered this low bitrate due to conky. (<- is this correct english?)...

It is "correct" enough to know exactly what you are talking about. Honestly, I would have never known that you were not a native English speaker had it not been for your sig and you pointing it out. I think in order to make it truly express what you were trying to get at in that sentence (without the context of the rest of the post), it would have been something like "I encountered this low bit rate while viewing conky" or "...while watching conky". Without the rest of the post, that sentence on its own would imply that the bitrate was being caused by conky itself.

But context is everything...

Last edited by WonderWoofy (2013-08-08 23:49:09)

Arch Linux

#1 2013-08-08 18:09:08

Intel Wifi 1000 iwlwifi - Low bitrate problem

#2 2013-08-08 21:31:37

Re: Intel Wifi 1000 iwlwifi - Low bitrate problem

#3 2013-08-08 22:46:27

Re: Intel Wifi 1000 iwlwifi - Low bitrate problem

#4 2013-08-08 23:26:53

Re: Intel Wifi 1000 iwlwifi - Low bitrate problem

#5 2013-08-08 23:48:30

Re: Intel Wifi 1000 iwlwifi - Low bitrate problem

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