Arch Linux

mundane

Banned

Registered: 2011-03-23

Posts: 49

2.6.39 ath9k regression

I installed kernel26 from [testing] and my wireless connection has become unusably slow. It just takes forever to connect to any website, but in some cases does manage to make a connection. I'm not sure what information I can provide to help debug, because nothing relevant is in dmesg or other log files (well, there is nothing different from 2.6.38 logs and 2.6.39 logs).

lspci -vvv

02:00.0 Network controller: Atheros Communications Inc. AR9285 Wireless Network Adapter (PCI-Express) (rev 01)
    Subsystem: Atheros Communications Inc. Device 30a1
    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 16
    Region 0: Memory at fb400000 (64-bit, non-prefetchable) [size=64K]
    Capabilities: [40] Power Management version 3
        Flags: PMEClk- DSI- D1+ D2- AuxCurrent=375mA PME(D0+,D1+,D2-,D3hot+,D3cold-)
        Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
    Capabilities: [50] MSI: Enable- Count=1/1 Maskable- 64bit-
        Address: 00000000  Data: 0000
    Capabilities: [60] Express (v2) Legacy Endpoint, MSI 00
        DevCap:    MaxPayload 128 bytes, PhantFunc 0, Latency L0s <512ns, L1 <64us
            ExtTag- AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
        DevCtl:    Report errors: Correctable- Non-Fatal- Fatal- Unsupported-
            RlxdOrd- ExtTag- PhantFunc- AuxPwr- NoSnoop-
            MaxPayload 128 bytes, MaxReadReq 512 bytes
        DevSta:    CorrErr+ UncorrErr- FatalErr- UnsuppReq+ AuxPwr- TransPend-
        LnkCap:    Port #0, Speed 2.5GT/s, Width x1, ASPM L0s L1, Latency L0 <512ns, L1 <64us
            ClockPM- Surprise- LLActRep- BwNot-
        LnkCtl:    ASPM Disabled; RCB 64 bytes Disabled- Retrain- CommClk+
            ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
        LnkSta:    Speed 2.5GT/s, Width x1, TrErr- Train- SlotClk+ DLActive- BWMgmt- ABWMgmt-
        DevCap2: Completion Timeout: Not Supported, TimeoutDis+
        DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-
        LnkCtl2: Target Link Speed: 2.5GT/s, EnterCompliance- SpeedDis-, Selectable De-emphasis: -6dB
             Transmit Margin: Normal Operating Range, EnterModifiedCompliance- ComplianceSOS-
             Compliance De-emphasis: -6dB
        LnkSta2: Current De-emphasis Level: -6dB
    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] Virtual Channel
        Caps:    LPEVC=0 RefClk=100ns PATEntryBits=1
        Arb:    Fixed- WRR32- WRR64- WRR128-
        Ctrl:    ArbSelect=Fixed
        Status:    InProgress-
        VC0:    Caps:    PATOffset=00 MaxTimeSlots=1 RejSnoopTrans-
            Arb:    Fixed- WRR32- WRR64- WRR128- TWRR128- WRR256-
            Ctrl:    Enable+ ID=0 ArbSelect=Fixed TC/VC=01
            Status:    NegoPending- InProgress-
    Capabilities: [160 v1] Device Serial Number 00-15-17-ff-ff-24-14-12
    Capabilities: [170 v1] Power Budgeting <?>
    Kernel driver in use: ath9k

Is anyone having similar issues? Is there something I can do to provide more debugging information?

I also tried with modprobe ath9k nohwcrypto=1 but that didn't change anything.

Last edited by mundane (2011-05-21 10:38:43)

litemotiv

Forum Fellow

Registered: 2008-08-01

Posts: 5,026

Re: 2.6.39 ath9k regression

Moved to [testing].

---

ᶘ ᵒᴥᵒᶅ

once

Member

From: Taiwan

Registered: 2006-09-12

Posts: 266

Re: 2.6.39 ath9k regression

had similar issues from .38 & .39, with ath5k same issues.

abraxas88

Member

From: Rome, Italy

Registered: 2009-12-12

Posts: 88

Re: 2.6.39 ath9k regression

I've had the same regression on the same card since kernel 2.6.38.
Try creating the file

/etc/modprobe.d/ath9.conf

and writing

options ath9k nohwcrypt=1

Bonzodog

Member

From: Leicester, UK

Registered: 2008-02-14

Posts: 106

Re: 2.6.39 ath9k regression

On an upgrade to 2.6.39, I was getting the "deauthenticated from (.....) Reason 3" error, and would only connect for a max of 30 seconds, and sometimes took numerous attempts to connect to my router. I disabled ipv6, which appears to have speeded things up a lot, and rolled back my kernel to 2.6.38 for now. I am using the ath9k driver on an Asus X5DC laptop, using the Atheros 9285 chipset.

Last edited by Bonzodog (2011-05-24 09:12:34)

Bonzodog

Member

From: Leicester, UK

Registered: 2008-02-14

Posts: 106

Re: 2.6.39 ath9k regression

Does anyone know if this has now been fixed? I still have the kernel blacklisted for upgrade, and just want to know if its safe yet?