8086:4236 [Lenovo ThinkPad T400 6475] connection drops frequently, pc stalls for several seconds

[bowman]

Connection drops every (almost exactly) 5 minutes. PC stalls for several seconds during :
"kernel: [ 2068.078667] ieee80211 phy0: Hardware restart was requested"

ProblemType: Bug
DistroRelease: Ubuntu 12.10
Package: linux-image-3.5.0-26-generic 3.5.0-26.42
ProcVersionSignature: Ubuntu 3.5.0-26.42-generic 3.5.7.6
Uname: Linux 3.5.0-26-generic x86_64
ApportVersion: 2.6.1-0ubuntu10
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: lubov 1640 F.... pulseaudio
Date: Sun Mar 31 11:00:48 2013
HibernationDevice: RESUME=UUID=7a539902-20fd-4640-8fa3-b742eabab578
InstallationDate: Installed on 2013-03-28 (2 days ago)
InstallationMedia: Ubuntu 12.10 "Quantal Quetzal" - Release amd64 (20121017.5)
MachineType: LENOVO 6475BY5
MarkForUpload: True
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcEnviron:
 TERM=xterm
 PATH=(custom, no user)
 XDG_RUNTIME_DIR=<set>
 LANG=en_US.UTF-8
 SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.5.0-26-generic root=UUID=dfc0cb00-7e0a-45d6-b7d5-587cf6cbce89 ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-3.5.0-26-generic N/A
 linux-backports-modules-3.5.0-26-generic N/A
 linux-firmware 1.95
SourcePackage: linux
UpgradeStatus: No upgrade log present (probably fresh install)
dmi.bios.date: 12/15/2011
dmi.bios.vendor: LENOVO
dmi.bios.version: 7UET93WW (3.23 )
dmi.board.name: 6475BY5
dmi.board.vendor: LENOVO
dmi.board.version: Not Available
dmi.chassis.asset.tag: 1S6475BY5L3BDT9A
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvr7UET93WW(3.23):bd12/15/2011:svnLENOVO:pn6475BY5:pvrThinkPadT400:rvnLENOVO:rn6475BY5:rvrNotAvailable:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.name: 6475BY5
dmi.product.version: ThinkPad T400
dmi.sys.vendor: LENOVO

[Brad Figg (brad-figg)]

This change was made by a bot.

[bowman (tereshkosg)]

Tried a couple of new kernels from http://kernel.ubuntu.com/~kernel-ppa/mainline/ :

/~kernel-ppa/mainline/v3.7-rc2-quantal
/~kernel-ppa/mainline/v3.8.5-raring

Experiencing the same problem on all of them.

Under windows there are no wifi issues what so ever.

[bowman (tereshkosg)]

also 've given a shot to v3.2.42 - same outcome

[Joseph Salisbury (jsalisbury)]

Would it be possible for you to test the latest upstream kernel? Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the latest v3.9 kernel[0] (Not a kernel in the daily directory) and install both the linux-image and linux-image-extra .deb packages.

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'.
Once testing of the upstream kernel is complete, please mark this bug as "Confirmed".

Thanks in advance.

[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v3.9-rc5-raring/

[bowman (tereshkosg)]

tested 3.9 as was suggested. Problem persists. kern.log now gets the following snippet about 40 times every 5 minutes.

Apr 1 18:46:12 pc kernel: [ 309.272772] ------------[ cut here ]------------
Apr 1 18:46:12 pc kernel: [ 309.272792] WARNING: at /home/apw/COD/linux/drivers/net/wireless/iwlwifi/iwl-trans.h:761 iwl_trans_pcie_wait_txq_empty+0x36f/0x3e0 [iwlwifi]()
Apr 1 18:46:12 pc kernel: [ 309.272794] Hardware name: 6475BY5
Apr 1 18:46:12 pc kernel: [ 309.272795] Modules linked in: snd_hda_codec_conexant coretemp joydev snd_hda_intel snd_hda_codec snd_hwdep snd_pcm kvm snd_seq_midi snd_rawmidi pcmcia snd_seq_midi_event yenta_socket pcmcia_rsrc arc4 microcode pcmcia_core snd_seq iwldvm psmouse mac80211 bnep rfcomm parport_pc serio_raw snd_timer lpc_ich ppdev snd_seq_device iwlwifi thinkpad_acpi snd nvram tpm_tis cfg80211 i915 btusb soundcore snd_page_alloc bluetooth drm_kms_helper drm mac_hid wmi mei i2c_algo_bit video lp parport firewire_ohci firewire_core crc_itu_t ahci libahci e1000e ptp pps_core
Apr 1 18:46:12 pc kernel: [ 309.272828] Pid: 245, comm: kworker/u:3 Tainted: G W 3.9.0-030900rc5-generic #201303311835
Apr 1 18:46:12 pc kernel: [ 309.272830] Call Trace:
Apr 1 18:46:12 pc kernel: [ 309.272837] [<ffffffff8105a53f>] warn_slowpath_common+0x7f/0xc0
Apr 1 18:46:12 pc kernel: [ 309.272840] [<ffffffff8105a59a>] warn_slowpath_null+0x1a/0x20
Apr 1 18:46:12 pc kernel: [ 309.272846] [<ffffffffa030c00f>] iwl_trans_pcie_wait_txq_empty+0x36f/0x3e0 [iwlwifi]
Apr 1 18:46:12 pc kernel: [ 309.272855] [<ffffffffa044ab9e>] iwlagn_mac_flush+0xae/0x1b0 [iwldvm]
Apr 1 18:46:12 pc kernel: [ 309.272882] [<ffffffffa036ae84>] ieee80211_idle_on+0x64/0x100 [mac80211]
Apr 1 18:46:12 pc kernel: [ 309.272894] [<ffffffffa036b225>] ieee80211_recalc_idle+0xf5/0x130 [mac80211]
Apr 1 18:46:12 pc kernel: [ 309.272907] [<ffffffffa0385056>] ieee80211_free_chanctx+0xa6/0x1a0 [mac80211]
Apr 1 18:46:12 pc kernel: [ 309.272920] [<ffffffffa0385fbb>] __ieee80211_vif_release_channel+0x5b/0x70 [mac80211]
Apr 1 18:46:12 pc kernel: [ 309.272932] [<ffffffffa0386341>] ieee80211_vif_release_channel+0x51/0x70 [mac80211]
Apr 1 18:46:12 pc kernel: [ 309.272948] [<ffffffffa03a035e>] ieee80211_set_disassoc+0x24e/0x4f0 [mac80211]
Apr 1 18:46:12 pc kernel: [ 309.272961] [<ffffffffa03a07cb>] ieee80211_sta_connection_lost.isra.29+0x3b/0x80 [mac80211]
Apr 1 18:46:12 pc kernel: [ 309.272976] [<ffffffffa03a2d31>] ieee80211_sta_work+0x4a1/0x4b0 [mac80211]
Apr 1 18:46:12 pc kernel: [ 309.272986] [<ffffffffa036a898>] ieee80211_iface_work+0x2b8/0x350 [mac80211]
Apr 1 18:46:12 pc kernel: [ 309.272989] [<ffffffff81079ceb>] process_one_work+0x16b/0x400
Apr 1 18:46:12 pc kernel: [ 309.272992] [<ffffffff8107a8d8>] worker_thread+0x118/0x350
Apr 1 18:46:12 pc kernel: [ 309.272994] [<ffffffff8107a7c0>] ? manage_workers+0x120/0x120
Apr 1 18:46:12 pc kernel: [ 309.272998] [<ffffffff8107fee0>] kthread+0xc0/0xd0
Apr 1 18:46:12 pc kernel: [ 309.273000] [<ffffffff8107fe20>] ? flush_kthread_worker+0xb0/0xb0
Apr 1 18:46:12 pc kernel: [ 309.273005] [<ffffffff8170ca6c>] ret_from_fork+0x7c/0xb0
Apr 1 18:46:12 pc kernel: [ 309.273007]...

[penalvch (penalvch)]

bowman, as per http://support.lenovo.com/en_US/downloads/default.page? an update is available for your BIOS (3.24). If you update to this, does it change anything?

If not, could you please both specify what happened, and provide the output of the following terminal command:
sudo dmidecode -s bios-version && sudo dmidecode -s bios-release-date

Thank you for your understanding.

[Launchpad Janitor (janitor)]

[Expired for linux (Ubuntu) because there has been no activity for 60 days.]