[Bug 580753] Re: ath9k module causing MIC challenge failures
Confirmed bug exists in kerne 2.6.34-999-generic build date 201005121008. ** Tags removed: needs-upstream-testing -- ath9k module causing MIC challenge failures https://bugs.launchpad.net/bugs/580753 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 580753] Re: ath9k module causing MIC challenge failures
I was reluctant to believe it would affect the outcome, but I can't deny the data. With feedback from ASUS, updated the BIOS to the latest version (1401) and initial tests with kernel build 2.6.34-999-generic are looking good. Will do wider tests tomorrow against UNR 9.10 (30-60 machines) and likely next week against UNE 10.04 to confirm. -- ath9k module causing MIC challenge failures https://bugs.launchpad.net/bugs/580753 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 580753] Re: ath9k module causing MIC challenge failures
Tested using 30 machines updated to the latest BIOS version, first with kernel 2.6.31-19-generic (UNR 9.10), then with 2.6.34-999-generic (UNE 10.04), still generating MIC failures. -- ath9k module causing MIC challenge failures https://bugs.launchpad.net/bugs/580753 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 580753] [NEW] ath9k module causing MIC challenge failures
Public bug reported: With an access point configured for WPA (TKIP), boot/associate six ASUS eeePC 1005HA running either UNR 9.10 or UNE 10.04 simultaneously (within a 2-3 second window) and one of them will cause a MIC challenge failure, where, by protocol, everyone associated to the access point will be disconnected for approximately 60 seconds. While troubleshooting, determined the Xandros 1.8 image that ships on the ASUS eeePC 1005HA uses a different driver altogether. Simultaneously associate six of those while a UNR 9.10 or UNE 10.04 client is associated and the UNR/UNE client will cause a MIC challenge failure, I suspect from having such a tight cycle of group rekeying, based on the logs: May 13 13:05:44 asd-laptop wpa_supplicant[732]: WPA: Group rekeying completed with 00:1b:63:2b:46:75 [GTK=TKIP] May 13 13:05:44 asd-laptop NetworkManager: (wlan0): supplicant connection state: completed -> group handshake May 13 13:05:44 asd-laptop NetworkManager: (wlan0): supplicant connection state: group handshake -> completed May 13 13:05:46 asd-laptop wpa_supplicant[732]: WPA: Group rekeying completed with 00:1b:63:2b:46:75 [GTK=TKIP] May 13 13:05:46 asd-laptop NetworkManager: (wlan0): supplicant connection state: completed -> group handshake May 13 13:05:46 asd-laptop NetworkManager: (wlan0): supplicant connection state: group handshake -> completed May 13 13:05:46 asd-laptop wpa_supplicant[732]: Michael MIC failure detected Retested by reassociating the six Xandros clients without the UNR/UNE client and no MIC failure occurs. ProblemType: Bug DistroRelease: Ubuntu 10.04 Package: linux-image-2.6.32-21-generic 2.6.32-21.32 Regression: No Reproducible: Yes ProcVersionSignature: Ubuntu 2.6.32-21.32-generic 2.6.32.11+drm33.2 Uname: Linux 2.6.32-21-generic i686 AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21. AplayDevices: List of PLAYBACK Hardware Devices card 0: Intel [HDA Intel], device 0: ALC269 Analog [ALC269 Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 Architecture: i386 ArecordDevices: List of CAPTURE Hardware Devices card 0: Intel [HDA Intel], device 0: ALC269 Analog [ALC269 Analog] Subdevices: 1/1 Subdevice #0: subdevice #0 AudioDevicesInUse: USERPID ACCESS COMMAND /dev/snd/controlC0: asd1577 F pulseaudio CRDA: Error: [Errno 2] No such file or directory Card0.Amixer.info: Card hw:0 'Intel'/'HDA Intel at 0xf7db8000 irq 22' Mixer name : 'Realtek ALC269' Components : 'HDA:10ec0269,104383ce,0014' Controls : 12 Simple ctrls : 7 Date: Fri May 14 14:40:36 2010 HibernationDevice: RESUME=UUID=64a6054c-eac5-4a34-bf57-03c85e705e6c InstallationMedia: Ubuntu-Netbook 10.04 "Lucid Lynx" - Release i386 (20100429.4) MachineType: ASUSTeK Computer INC. 1005HA ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-21-generic root=UUID=725ef15d-dd13-4d7f-b968-1b58bf967cb9 ro quiet splash ProcEnviron: LANG=en_US.utf8 SHELL=/bin/bash RelatedPackageVersions: linux-firmware 1.34 RfKill: 0: phy0: Wireless LAN Soft blocked: no Hard blocked: no SourcePackage: linux dmi.bios.date: 08/26/2009 dmi.bios.vendor: American Megatrends Inc. dmi.bios.version: 0801 dmi.board.asset.tag: To Be Filled By O.E.M. dmi.board.name: 1005HA dmi.board.vendor: ASUSTeK Computer INC. dmi.board.version: x.xx dmi.chassis.asset.tag: 0x dmi.chassis.type: 10 dmi.chassis.vendor: ASUSTeK Computer INC. dmi.chassis.version: x.x dmi.modalias: dmi:bvnAmericanMegatrendsInc.:bvr0801:bd08/26/2009:svnASUSTeKComputerINC.:pn1005HA:pvrx.x:rvnASUSTeKComputerINC.:rn1005HA:rvrx.xx:cvnASUSTeKComputerINC.:ct10:cvrx.x: dmi.product.name: 1005HA dmi.product.version: x.x dmi.sys.vendor: ASUSTeK Computer INC. ** Affects: linux (Ubuntu) Importance: Undecided Status: New ** Tags: apport-bug i386 lucid needs-upstream-testing networking ubuntu-une -- ath9k module causing MIC challenge failures https://bugs.launchpad.net/bugs/580753 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 580753] Re: ath9k module causing MIC challenge failures
** Attachment added: "AlsaDevices.txt" http://launchpadlibrarian.net/48468883/AlsaDevices.txt ** Attachment added: "BootDmesg.txt" http://launchpadlibrarian.net/48468884/BootDmesg.txt ** Attachment added: "Card0.Amixer.values.txt" http://launchpadlibrarian.net/48468885/Card0.Amixer.values.txt ** Attachment added: "Card0.Codecs.codec.0.txt" http://launchpadlibrarian.net/48468886/Card0.Codecs.codec.0.txt ** Attachment added: "CurrentDmesg.txt" http://launchpadlibrarian.net/48468887/CurrentDmesg.txt ** Attachment added: "Dependencies.txt" http://launchpadlibrarian.net/4846/Dependencies.txt ** Attachment added: "IwConfig.txt" http://launchpadlibrarian.net/48468889/IwConfig.txt ** Attachment added: "Lspci.txt" http://launchpadlibrarian.net/48468890/Lspci.txt ** Attachment added: "Lsusb.txt" http://launchpadlibrarian.net/48468891/Lsusb.txt ** Attachment added: "PciMultimedia.txt" http://launchpadlibrarian.net/48468892/PciMultimedia.txt ** Attachment added: "ProcCpuinfo.txt" http://launchpadlibrarian.net/48468893/ProcCpuinfo.txt ** Attachment added: "ProcInterrupts.txt" http://launchpadlibrarian.net/48468894/ProcInterrupts.txt ** Attachment added: "ProcModules.txt" http://launchpadlibrarian.net/48468895/ProcModules.txt ** Attachment added: "UdevDb.txt" http://launchpadlibrarian.net/48468896/UdevDb.txt ** Attachment added: "UdevLog.txt" http://launchpadlibrarian.net/48468897/UdevLog.txt ** Attachment added: "WifiSyslog.txt" http://launchpadlibrarian.net/48468898/WifiSyslog.txt -- ath9k module causing MIC challenge failures https://bugs.launchpad.net/bugs/580753 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 580753] Re: ath9k module causing MIC challenge failures
Continuing to test 2.6.34-999-generic. Had a client generate a MIC failure after several hours of continuous connectivity. Most interesting is cross-correlating the logs between the access point (in this case an Apple AirPort) and the client that caused the MIC failure. Access point: May 26 13:10:01 Severity:5 Disassociated with station 1c:4b:d6:a3:82:31 May 26 13:10:01 Severity:5 Rotated TKIP group key. May 26 13:10:02 Severity:5 Associated with station 1c:4b:d6:a3:82:31 May 26 13:10:02 Severity:5 Installed unicast CCMP key for supplicant 1c:4b:d6:a3:82:31 May 26 13:10:02 Severity:1 MIC integrity error (reported from STA) src_addr=1c:4b:d6:a3:82:31 Client: May 26 13:10:01 asd-laptop avahi-daemon[637]: last message repeated 2 times May 26 13:10:01 asd-laptop kernel: [13398.500221] No probe response from AP 00:1b:63:2b:46:75 after 500ms, disconnecting. May 26 13:10:01 asd-laptop wpa_supplicant[671]: CTRL-EVENT-DISCONNECTED - Disconnect event - remove keys May 26 13:10:01 asd-laptop kernel: [13398.560196] cfg80211: All devices are disconnected, going to restore regulatory settings May 26 13:10:01 asd-laptop kernel: [13398.560222] cfg80211: Restoring regulatory settings May 26 13:10:01 asd-laptop kernel: [13398.560242] cfg80211: Calling CRDA to update world regulatory domain May 26 13:10:01 asd-laptop NetworkManager: (wlan1): supplicant connection state: completed -> disconnected May 26 13:10:01 asd-laptop kernel: [13398.571339] cfg80211: World regulatory domain updated: May 26 13:10:01 asd-laptop kernel: [13398.571354] (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) May 26 13:10:01 asd-laptop kernel: [13398.571370] (2402000 KHz - 2472000 KHz @ 4 KHz), (300 mBi, 2000 mBm) May 26 13:10:01 asd-laptop kernel: [13398.571384] (2457000 KHz - 2482000 KHz @ 2 KHz), (300 mBi, 2000 mBm) May 26 13:10:01 asd-laptop kernel: [13398.571397] (2474000 KHz - 2494000 KHz @ 2 KHz), (300 mBi, 2000 mBm) May 26 13:10:01 asd-laptop kernel: [13398.571411] (517 KHz - 525 KHz @ 4 KHz), (300 mBi, 2000 mBm) May 26 13:10:01 asd-laptop kernel: [13398.571424] (5735000 KHz - 5835000 KHz @ 4 KHz), (300 mBi, 2000 mBm) May 26 13:10:01 asd-laptop NetworkManager: (wlan1): supplicant connection state: disconnected -> scanning May 26 13:10:02 asd-laptop wpa_supplicant[671]: Trying to associate with 00:1b:63:2b:46:75 (SSID='ittesting' freq=2452 MHz) May 26 13:10:02 asd-laptop NetworkManager: (wlan1): supplicant connection state: scanning -> associating May 26 13:10:02 asd-laptop kernel: [13399.798514] wlan1: authenticate with 00:1b:63:2b:46:75 (try 1) May 26 13:10:02 asd-laptop kernel: [13399.808652] wlan1: authenticated May 26 13:10:02 asd-laptop kernel: [13399.808712] wlan1: associate with 00:1b:63:2b:46:75 (try 1) May 26 13:10:02 asd-laptop kernel: [13399.812547] wlan1: RX AssocResp from 00:1b:63:2b:46:75 (capab=0x431 status=0 aid=1) May 26 13:10:02 asd-laptop kernel: [13399.812559] wlan1: associated May 26 13:10:02 asd-laptop wpa_supplicant[671]: Associated with 00:1b:63:2b:46:75 May 26 13:10:02 asd-laptop kernel: [13399.822750] cfg80211: Calling CRDA for country: US May 26 13:10:02 asd-laptop NetworkManager: (wlan1): supplicant connection state: associating -> associated May 26 13:10:02 asd-laptop NetworkManager: (wlan1): supplicant connection state: associated -> 4-way handshake May 26 13:10:02 asd-laptop kernel: [13399.829306] cfg80211: Received country IE: May 26 13:10:02 asd-laptop kernel: [13399.829318] cfg80211: Regulatory domain: US May 26 13:10:02 asd-laptop kernel: [13399.829324] (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) May 26 13:10:02 asd-laptop kernel: [13399.829335] (2402000 KHz - 2472000 KHz @ 4 KHz), (1 mBi, 2700 mBm) May 26 13:10:02 asd-laptop kernel: [13399.829342] cfg80211: CRDA thinks this should applied: May 26 13:10:02 asd-laptop kernel: [13399.829348] cfg80211: Regulatory domain: US May 26 13:10:02 asd-laptop kernel: [13399.829354] (start_freq - end_freq @ bandwidth), (max_antenna_gain, max_eirp) May 26 13:10:02 asd-laptop kernel: [13399.829364] (2402000 KHz - 2472000 KHz @ 4 KHz), (300 mBi, 2700 mBm) May 26 13:10:02 asd-laptop kernel: [13399.829373] (517 KHz - 525 KHz @ 4 KHz), (300 mBi, 1700 mBm) May 26 13:10:02 asd-laptop kernel: [13399.829383] (525 KHz - 533 KHz @ 4 KHz), (300 mBi, 2000 mBm) May 26 13:10:02 asd-laptop kernel: [13399.829392] (549 KHz - 560 KHz @ 4 KHz), (300 mBi, 2000 mBm) May 26 13:10:02 asd-laptop kernel: [13399.829401] (565 KHz - 571 KHz @ 4 KHz), (300 mBi, 2000 mBm) May 26 13:10:02 asd-laptop kernel: [13399.829411] (5735000 KHz - 5835000 KHz @ 4 KHz), (300 mBi, 3000 mBm) May 26 13:10:02 asd-laptop kernel: [13399.829417] cfg80211: We intersect both of these and get: May 26 13:10:02 asd-laptop kernel: [13399.829423] cfg80211: Reg
[Bug 580753] Re: ath9k module causing MIC challenge failures
Based on some info from the ath9k-devel mailing list ( http://www.mail- archive.com/ath9k-de...@lists.ath9k.org/msg02724.html ), confirmed that power management is off on the interface. -- ath9k module causing MIC challenge failures https://bugs.launchpad.net/bugs/580753 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 580753] Re: ath9k module causing MIC challenge failures
Completed 16-hour test with four clients and no MIC failures. Will do another 16-hour test with nine clients. -- ath9k module causing MIC challenge failures https://bugs.launchpad.net/bugs/580753 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 580753] Re: ath9k module causing MIC challenge failures
Test with nine clients generated a MIC failure in 2 hours 37 minutes. Retesting. -- ath9k module causing MIC challenge failures https://bugs.launchpad.net/bugs/580753 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 580753] Re: ath9k module causing MIC challenge failures
Retest with nine clients generated a MIC failure in 3 hours 55 minutes. -- ath9k module causing MIC challenge failures https://bugs.launchpad.net/bugs/580753 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 580753] Re: ath9k module causing MIC challenge failures
Thanks, Jouni. I see you're correct regarding the countermeasures not being triggered in that log. There are actually two different scenarios that may or may not be related: the MIC failures when multiple stations are associated within a tight window, and the periodic MIC failures when stations are connected for long periods of time (which may increase in frequency with an increase in clients). The AP log from comment #7 is an example of the second scenario, and looking at last night's run, we're coming up on 15.5 hours with three MIC failures and no countermeasures triggered. Here's a snippet from the AP log from the first scenario (tight window association): May 26 16:00:15 Severity:5 Associated with station 1c:4b:d6:a3:75:60 May 26 16:00:15 Severity:5 Installed unicast CCMP key for supplicant 1c:4b:d6:a3:75:60 May 26 16:00:16 Severity:5 Associated with station 1c:4b:d6:55:e8:01 May 26 16:00:16 Severity:5 Installed unicast CCMP key for supplicant 1c:4b:d6:55:e8:01 May 26 16:00:16 Severity:1 MIC integrity error (reported from STA) src_addr=1c:4b:d6:55:e8:01 May 26 16:00:16 Severity:5 Disassociated with station 1c:4b:d6:55:e8:01 May 26 16:00:17 Severity:5 Rotated TKIP group key. May 26 16:00:20 Severity:5 Deauthenticating with station 1c:4b:d6:55:e8:01 (reserved 2). May 26 16:00:20 Severity:5 Disassociated with station 1c:4b:d6:55:e8:01 May 26 16:00:23 Severity:5 Associated with station 1c:4b:d6:55:ef:bf May 26 16:00:23 Severity:5 Installed unicast CCMP key for supplicant 1c:4b:d6:55:ef:bf May 26 16:00:23 Severity:1 MIC integrity error (reported from STA) src_addr=1c:4b:d6:55:ef:bf May 26 16:00:23 Severity:1 Start TKIP countermeasures mode. May 26 16:00:23 Severity:5 Deauthenticating with station 1c:4b:d6:55:ef:bf (reserved 14). May 26 16:00:23 Severity:5 Deauthenticating with station 1c:4b:d6:a3:75:60 (reserved 14). May 26 16:00:23 Severity:5 Disassociated with station 1c:4b:d6:55:ef:bf May 26 16:00:23 Severity:5 Disassociated with station 1c:4b:d6:a3:75:60 May 26 16:00:23 Severity:5 Rotated TKIP group key. May 26 16:01:23 Severity:1 End TKIP countermeasures mode. I think especially if you look at 1c:4b:d6:55:ef:bf, you'll see the CCMP pairwise key for the station, but the group key is clearly still TKIP, and as you noted the TKIP group key seems to be rotated whenever a station comes and goes. But the station can still screw up the group key rotation and trigger the TKIP countermeasures. We're seeing this behavior on our Cisco APs as well, but the Apple AirPort is handy for the test. I believe all the failures are similar and that the variance we've seen has to do only with the number of stations. The population suffers from random disassociation/reassociation (either the no probe response or the MIC failure), which then triggers a group rekey, which increases the odds of another random disassociation/reassociation in another member of the population. Someone with better math than me could probably work out how this plays out as the population increases, but we've seen it's pretty painful in groups of 30. I'll jump on the wpa_supplicant debug verbosity right now. -- ath9k module causing MIC challenge failures https://bugs.launchpad.net/bugs/580753 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 580753] Re: ath9k module causing MIC challenge failures
Thanks Jouni. Absolutely. It's been a while since I've done a kernel patch and compile, but I suspect it's like riding a bike. I have not had a "natural" MIC failure yet this morning, but I've also been thinking about the most graceful way to generate it. I suspect with maybe three clients, two of which just cycle disassociation/reassociation, I'm betting the third will fail with fifteen minutes or so. Headed to lunch, and will then attempt to tickle the bug. -- ath9k module causing MIC challenge failures https://bugs.launchpad.net/bugs/580753 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 580753] Re: ath9k module causing MIC challenge failures
Worked like a charm. Cycled the interface on two stations once every 30 seconds before going to lunch, about 15 MIC failures in the last hour and ten or so. Station 1c:4b:d6:a3:7a:b4 generated three of them. Syslog from station attached, with log from AP to follow. First failure about 13:32 localtime. ** Attachment added: "syslog from 1c:4b:d6:a3:7a:b4 with wpa_supplicant debug" http://launchpadlibrarian.net/49285254/syslog -- ath9k module causing MIC challenge failures https://bugs.launchpad.net/bugs/580753 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 580753] Re: ath9k module causing MIC challenge failures
Log from Apple AirPort. ** Attachment added: "ectest_10 Log.txt" http://launchpadlibrarian.net/49285307/ectest_10%20Log.txt -- ath9k module causing MIC challenge failures https://bugs.launchpad.net/bugs/580753 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 580753] Re: ath9k module causing MIC challenge failures
I have not been able to reproduce the bug with our Broadcom-based devices, but I'm open to ideas. Does anyone believe it's possible the bug is with wpa_supplicant? -- ath9k module causing MIC challenge failures https://bugs.launchpad.net/bugs/580753 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 1073563] Re: ICA sessions can be selected for remote login only rdp
I believe this is related to the comments in https://bugs.launchpad.net /unity-greeter/+bug/1059663 as well as the unity-greeter changelog. It would sure be handy to have a workaround, though. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1073563 Title: ICA sessions can be selected for remote login only rdp To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/lightdm/+bug/1073563/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 580753] Re: ath9k module causing MIC challenge failures
Sorry Manoj, I just saw that I never replied with the final results. We had linux-backports-modules-wireless-2.6.32-24-generic in production on a few thousand devices with the AR9285 chipset through probably December 2012 with no issues. Thanks again, -Jack -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/580753 Title: ath9k module causing MIC challenge failures To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/580753/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 945379] Re: 168c:002b Wireless connection randomly drops -- ath9k
We have a few thousand AR9285 devices in production and are just now moving from 10.04 to 12.04. So far in our testing we aren't seeing any issues, but I noticed that these are all AzureWave AW-NE785 adapters (no Lite-On adapters). But, I have a very fresh demo unit with AR9462 / AzureWave Device 2110 that is experiencing the problem. So far the "options atk9k nohwcrypt=1" workaround has been ineffective. I'll only have the demo unit for about another week if there's anything you'd like me to test, or if there are additional tests you'd like me to run on the AzureWave AW-NE785 to see if there really is a difference in behavior between it and the Lite-On Communications Inc Device 6611. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/945379 Title: 168c:002b Wireless connection randomly drops -- ath9k To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/945379/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 945379] Re: 168c:002b Wireless connection randomly drops -- ath9k
Just tested linux-backports-modules-cw-3.6-3.2.0-36-generic (because it was easy) with notably better than stock results but still not great. I thought I would also see what easy options are available via the LTS Enablement Stack. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/945379 Title: 168c:002b Wireless connection randomly drops -- ath9k To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/945379/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 945379] Re: 168c:002b Wireless connection randomly drops -- ath9k
So, some more weirdness. I was able to get a copy of the shipping Ubuntu image for this demo unit, and it performs significantly better. We're going to do some additional testing and comparison, and there's still a wake from sleep issue as Guest. It's using 3.2.0-32-generic (which I believe I've already tested), but it's running a 64-bit kernel and I had only been testing 32-bit. Module info for anyone who wants to try: filename: /lib/modules/3.2.0-32-generic/kernel/drivers/net/wireless/ath/ath9k/ath9k.ko license:Dual BSD/GPL description:Support for Atheros 802.11n wireless LAN cards. author: Atheros Communications srcversion: 93B309EBD15DF78FA6B027B alias: platform:ar934x_wmac alias: platform:ar933x_wmac alias: platform:ath9k alias: pci:v168Cd0037sv*sd*bc*sc*i* alias: pci:v168Cd0034sv*sd*bc*sc*i* alias: pci:v168Cd0033sv*sd*bc*sc*i* alias: pci:v168Cd0032sv*sd*bc*sc*i* alias: pci:v168Cd0030sv*sd*bc*sc*i* alias: pci:v168Cd002Esv*sd*bc*sc*i* alias: pci:v168Cd002Dsv*sd*bc*sc*i* alias: pci:v168Cd002Csv*sd*bc*sc*i* alias: pci:v168Cd002Bsv*sd*bc*sc*i* alias: pci:v168Cd002Asv*sd*bc*sc*i* alias: pci:v168Cd0029sv*sd*bc*sc*i* alias: pci:v168Cd0027sv*sd*bc*sc*i* alias: pci:v168Cd0024sv*sd*bc*sc*i* alias: pci:v168Cd0023sv*sd*bc*sc*i* depends:ath9k_hw,ath9k_common,mac80211,cfg80211,ath intree: Y vermagic: 3.2.0-32-generic SMP mod_unload modversions parm: debug:Debugging mask (uint) parm: nohwcrypt:Disable hardware encryption (int) parm: blink:Enable LED blink on activity (int) parm: btcoex_enable:Enable wifi-BT coexistence (int) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/945379 Title: 168c:002b Wireless connection randomly drops -- ath9k To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/945379/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 945379] Re: 168c:002b Wireless connection randomly drops -- ath9k
I spoke too soon. Looking back at my previous posts, I should clarify that we're seeing two symptoms with the AR9462 / AzureWave Device 2110 and ath9k drivers from 32-bit 3.2.0-36-generic (and intermittently onwards): excessive connection drops, and excessive data retries from the wireless access point. With AR9285 / AzureWave AW-NE785 adapters, I cannot reproduce either problem. Testing 64-bit 3.2.0-32-generic, data retries are back within acceptable limits (on par with AR9285, or about an order of magnitude fewer retries than 32-bit 3.2.0-36-generic) but connection drops are as horrible as ever, about once every three minutes or so. Now doing some additional testing with 64-bit versions beyond 3.2.0-32-generic. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/945379 Title: 168c:002b Wireless connection randomly drops -- ath9k To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/945379/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 945379] Re: 168c:002b Wireless connection randomly drops -- ath9k
Hi Florin, I haven't seen that issue yet, but I do have some more info that may be related. Just finished initial tests on 3.2.0-39-generic and the number of retries are again through the roof (for hard numbers, on an 8 MB file transfer, 325 retries with 3.2.0-32, 2020 retries with 3.2.0-39). But, I sat down with the network team to look through the logs during the connection drops with 3.2.0-32 and we're seeing MIC errors again: "The AP 'kn_office_100' received a WPA MIC error on protocol '0' from Station 'dc:85:de:8a:14:0e'. Counter measures have been activated and traffic has been suspended for 60 seconds. - Controller Name: kn_254_17AP" ...which leads back to a bug I'm all too familiar with: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/580753 Florin, it's possible that if you're seeing the same MIC challenge failures that your AP is taking more hostile countermeasures at some point (maybe the nth failure). Especially if you see that other devices remain connected but your AR9285 won't get reconnected until the AP reboots, I'd be tempted to point the finger at the MIC failure. But that's just supposition on my part. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/945379 Title: 168c:002b Wireless connection randomly drops -- ath9k To manage notifications about this bug go to: https://bugs.launchpad.net/linux/+bug/945379/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 580753] Re: ath9k module causing MIC challenge failures
After a long run with the snapshot, finally getting around to testing the backport (linux-backports-modules-wireless-2.6.32-24-generic now). Will probably take a couple of weeks to complete testing. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/580753 Title: ath9k module causing MIC challenge failures -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
[Bug 580753] Re: ath9k module causing MIC challenge failures
Problem seems to be resolved in the 2010-06-17 snapshot of compat- wireless. http://wireless.kernel.org/download/compat-wireless-2.6/compat- wireless-2010-06-17.tar.bz2 -- ath9k module causing MIC challenge failures https://bugs.launchpad.net/bugs/580753 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
