Glen Mehn, thank you for reporting this and helping make Ubuntu better. If you could also please test the latest upstream kernel available that would be great. It will allow additional upstream developers to examine the issue. Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please do not test the kernel in the daily folder, but the one all the way at the bottom. Once you've tested the upstream kernel, please remove the 'needs-upstream-testing' tag. This can be done by clicking on the yellow pencil icon next to the tag located at the bottom of the bug description and deleting the 'needs-upstream-testing' text. As well, please comment on which kernel version specifically you tested.
If this bug is fixed in the mainline kernel, please add the following tag 'kernel-fixed-upstream'. If the mainline kernel does not fix this bug, please add the tag: 'kernel-bug-exists-upstream'. If you are unable to test the mainline kernel, for example it will not boot, please add the tag: 'kernel-unable-to-test-upstream', and comment as to why specifically you were unable to test it. Please let us know your results. Thanks in advance. Helpful Bug Reporting Links: https://help.ubuntu.com/community/ReportingBugs#Bug_Reporting_Etiquette https://help.ubuntu.com/community/ReportingBugs#A3._Make_sure_the_bug_hasn.27t_already_been_reported https://help.ubuntu.com/community/ReportingBugs#Adding_Apport_Debug_Information_to_an_Existing_Launchpad_Bug https://help.ubuntu.com/community/ReportingBugs#Adding_Additional_Attachments_to_an_Existing_Launchpad_Bug ** Tags added: needs-upstream-testing ** Tags added: kernel-wifi ** Summary changed: - Wireless / iwlwifi / Intel Corporation Ultimate N WiFi Link 5300 intermittent disconnection - under load? + 8086:4236 Wireless / iwlwifi / Intel Corporation Ultimate N WiFi Link 5300 intermittent disconnection - under load? ** Description changed: I've been wondering about this for a while now, so I think this is an ongoing issue - it's just gotten worse after this reboot (to 3.2.0-27): - - - lspci -vv output: - 03:00.0 Network controller: Intel Corporation Ultimate N WiFi Link 5300 - Subsystem: Intel Corporation Device 1011 - Physical Slot: 1 - 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 47 - Region 0: Memory at f2500000 (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: 4122 - 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 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- - 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 00-16-ea-ff-ff-b3-78-32 - Kernel driver in use: iwlwifi - Kernel modules: iwlwifi - iwconfig output: - wlan0 IEEE 802.11abgn ESSID:"CampusGuest" - Mode:Managed Frequency:2.412 GHz Access Point: 00:1A:1E:7E:8E:C1 - Bit Rate=5.5 Mb/s Tx-Power=3 dBm - Retry long limit:7 RTS thr:off Fragment thr:off - Encryption key:off - Power Management:off - Link Quality=69/70 Signal level=-41 dBm - Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 - Tx excessive retries:11555 Invalid misc:3060 Missed beacon:0 + wlan0 IEEE 802.11abgn ESSID:"CampusGuest" + Mode:Managed Frequency:2.412 GHz Access Point: 00:1A:1E:7E:8E:C1 + Bit Rate=5.5 Mb/s Tx-Power=3 dBm + Retry long limit:7 RTS thr:off Fragment thr:off + Encryption key:off + Power Management:off + Link Quality=69/70 Signal level=-41 dBm + Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0 + Tx excessive retries:11555 Invalid misc:3060 Missed beacon:0 (FWIW, "CampusGuest" is an open network) ProblemType: Bug DistroRelease: Ubuntu 12.04 Package: linux-image-3.2.0-27-generic 3.2.0-27.43 ProcVersionSignature: Ubuntu 3.2.0-27.43-generic 3.2.21 Uname: Linux 3.2.0-27-generic x86_64 AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24. AplayDevices: - **** List of PLAYBACK Hardware Devices **** - card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog] - Subdevices: 1/1 - Subdevice #0: subdevice #0 + **** List of PLAYBACK Hardware Devices **** + card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog] + Subdevices: 1/1 + Subdevice #0: subdevice #0 ApportVersion: 2.0.1-0ubuntu11 Architecture: amd64 ArecordDevices: - **** List of CAPTURE Hardware Devices **** - card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog] - Subdevices: 1/1 - Subdevice #0: subdevice #0 + **** List of CAPTURE Hardware Devices **** + card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog] + Subdevices: 1/1 + Subdevice #0: subdevice #0 AudioDevicesInUse: - USER PID ACCESS COMMAND - /dev/snd/controlC0: glen 2190 F.... pulseaudio + USER PID ACCESS COMMAND + /dev/snd/controlC0: glen 2190 F.... pulseaudio CRDA: - country GB: - (2402 - 2482 @ 40), (N/A, 20) - (5170 - 5250 @ 40), (N/A, 20) - (5250 - 5330 @ 40), (N/A, 20), DFS - (5490 - 5710 @ 40), (N/A, 27), DFS + country GB: + (2402 - 2482 @ 40), (N/A, 20) + (5170 - 5250 @ 40), (N/A, 20) + (5250 - 5330 @ 40), (N/A, 20), DFS + (5490 - 5710 @ 40), (N/A, 27), DFS Card0.Amixer.info: - Card hw:0 'Intel'/'HDA Intel at 0xf2620000 irq 48' - Mixer name : 'Conexant CX20561 (Hermosa)' - Components : 'HDA:14f15051,17aa20ff,00100000' - Controls : 21 - Simple ctrls : 13 + Card hw:0 'Intel'/'HDA Intel at 0xf2620000 irq 48' + Mixer name : 'Conexant CX20561 (Hermosa)' + Components : 'HDA:14f15051,17aa20ff,00100000' + Controls : 21 + Simple ctrls : 13 Card29.Amixer.info: - Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw 7XHT24WW-1.06' - Mixer name : 'ThinkPad EC 7XHT24WW-1.06' - Components : '' - Controls : 1 - Simple ctrls : 1 + Card hw:29 'ThinkPadEC'/'ThinkPad Console Audio Control at EC reg 0x30, fw 7XHT24WW-1.06' + Mixer name : 'ThinkPad EC 7XHT24WW-1.06' + Components : '' + Controls : 1 + Simple ctrls : 1 Card29.Amixer.values: - Simple mixer control 'Console',0 - Capabilities: pswitch pswitch-joined penum - Playback channels: Mono - Mono: Playback [on] + Simple mixer control 'Console',0 + Capabilities: pswitch pswitch-joined penum + Playback channels: Mono + Mono: Playback [on] Date: Tue Jul 24 14:09:24 2012 HibernationDevice: RESUME=UUID=dba363a9-992e-4587-9ee2-adacf87f7884 InstallationMedia: Ubuntu 10.04 LTS "Lucid Lynx" - Release amd64 (20100429) MachineType: LENOVO 7459A84 ProcEnviron: - TERM=xterm - PATH=(custom, no user) - LANG=en_GB.UTF-8 - SHELL=/bin/bash + TERM=xterm + PATH=(custom, no user) + LANG=en_GB.UTF-8 + SHELL=/bin/bash ProcFB: 0 inteldrmfb ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.2.0-27-generic root=UUID=c03bec8e-3cd1-41b9-b2c9-b6a768c9c818 ro quiet splash vt.handoff=7 PulseList: - Error: command ['pacmd', 'list'] failed with exit code 1: Home directory /home/glen not ours. - No PulseAudio daemon running, or not running as session daemon. + Error: command ['pacmd', 'list'] failed with exit code 1: Home directory /home/glen not ours. + No PulseAudio daemon running, or not running as session daemon. RelatedPackageVersions: - linux-restricted-modules-3.2.0-27-generic N/A - linux-backports-modules-3.2.0-27-generic N/A - linux-firmware 1.79 + linux-restricted-modules-3.2.0-27-generic N/A + linux-backports-modules-3.2.0-27-generic N/A + linux-firmware 1.79 SourcePackage: linux StagingDrivers: mei UpgradeStatus: Upgraded to precise on 2012-05-15 (69 days ago) dmi.bios.date: 12/13/2011 dmi.bios.vendor: LENOVO dmi.bios.version: 6DET71WW (3.21 ) dmi.board.name: 7459A84 dmi.board.vendor: LENOVO dmi.board.version: Not Available dmi.chassis.asset.tag: No Asset Information dmi.chassis.type: 10 dmi.chassis.vendor: LENOVO dmi.chassis.version: Not Available dmi.modalias: dmi:bvnLENOVO:bvr6DET71WW(3.21):bd12/13/2011:svnLENOVO:pn7459A84:pvrThinkPadX200:rvnLENOVO:rn7459A84:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable: dmi.product.name: 7459A84 dmi.product.version: ThinkPad X200 dmi.sys.vendor: LENOVO ** Changed in: linux (Ubuntu) Importance: Undecided => High ** Changed in: linux (Ubuntu) Status: Confirmed => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1028446 Title: 8086:4236 Wireless / iwlwifi / Intel Corporation Ultimate N WiFi Link 5300 intermittent disconnection - under load? 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