CID: 201409-15477 Dell Latitude 3450
The wireless key will make the wifi chip stop working after re-enabled. Reproduce rate is > 80%
(It looks like if there is a wireless connection profile in the list this issue won't happen)
Steps:
1. Install 14.04.2 (3.16.0-30), boot to desktop
2. Do not connect to the wireless network, disable the wireless network with the hotkey.
3. Re-enable the wireless network with the hotkey
Expected result:
* Wireless network successfully disabled and re-enabled without problem. AP available for connect.
Actual result:
* Wireless network can't be re-enabled, no AP found in the list.
03:00.0 Network controller [0280]: Intel Corporation Wireless 7265 [8086:095a] (rev 3b)
Subsystem: Intel Corporation Dual Band Wireless-AC 7265 [8086:5400]
Flags: bus master, fast devsel, latency 0, IRQ 63
Memory at f7100000 (64-bit, non-prefetchable) [size=8K]
Capabilities: <access denied>
Kernel driver in use: iwlwifi
Error message could be found in the dmesg output:
[ 72.376877] WARNING: CPU: 0 PID: 4 at /build/buildd/linux-lts-utopic-3.16.0/net/wireless/core.c:949 cfg80211_netdev_notifier_call+0x571/0x630 [cfg80211]()
[ 72.376879] Modules linked in: nls_iso8859_1 bbswitch(OE) bnep rfcomm snd_hda_codec_hdmi nvidia(POE) uvcvideo videobuf2_vmalloc videobuf2_memops videobuf2_core v4l2_common videodev media arc4 dell_wmi sparse_keymap iwlmvm mxm_wmi joydev mac80211 i915 dell_laptop dcdbas intel_rapl x86_pkg_temp_thermal intel_powerclamp coretemp kvm_intel kvm crct10dif_pclmul crc32_pclmul ghash_clmulni_intel aesni_intel aes_x86_64 lrw gf128mul glue_helper ablk_helper cryptd serio_raw btusb bluetooth 6lowpan_iphc i2c_hid hid snd_hda_codec_realtek snd_hda_codec_generic drm_kms_helper snd_soc_rt5640 snd_hda_intel snd_soc_rl6231 snd_hda_controller snd_soc_core snd_hda_codec snd_hwdep snd_compress snd_seq_midi snd_seq_midi_event snd_rawmidi drm snd_pcm_dmaengine snd_pcm i2c_designware_platform iwlwifi snd_seq cfg80211 snd_seq_device snd_timer snd_soc_sst_acpi snd mei_me mei 8250_dw shpchp parport_pc lpc_ich soundcore dw_dmac i2c_designware_core i2c_algo_bit dw_dmac_core video ppdev spi_pxa2xx_platform acpi_pad mac_hid wmi lp parport uas usb_storage psmouse ahci r8169 libahci mii sdhci_acpi sdhci
[ 72.376984] CPU: 0 PID: 4 Comm: kworker/0:0 Tainted: P OE 3.16.0-30-generic #40~14.04.1-Ubuntu
[ 72.376986] Hardware name: Dell Inc. Latitude 3450/013C62, BIOS X51 09/17/2014
[ 72.376999] Workqueue: events cfg80211_rfkill_sync_work [cfg80211]
[ 72.377001] 0000000000000009 ffff880223cd7c28 ffffffff81762590 0000000000000000
[ 72.377005] ffff880223cd7c60 ffffffff8106dd2d ffff88022387e8d0 ffff880219e24260
[ 72.377009] ffff88022387e000 0000000000000002 ffff880219e24000 ffff880223cd7c70
[ 72.377012] Call Trace:
[ 72.377019] [<ffffffff81762590>] dump_stack+0x45/0x56
[ 72.377024] [<ffffffff8106dd2d>] warn_slowpath_common+0x7d/0xa0
[ 72.377028] [<ffffffff8106de0a>] warn_slowpath_null+0x1a/0x20
[ 72.377040] [<ffffffffc03844f1>] cfg80211_netdev_notifier_call+0x571/0x630 [cfg80211]
[ 72.377045] [<ffffffff8165a81b>] ? __dev_remove_pack+0x8b/0xb0
[ 72.377049] [<ffffffff8173df94>] ? __unregister_prot_hook+0xd4/0xe0
[ 72.377054] [<ffffffff8109598c>] notifier_call_chain+0x4c/0x70
[ 72.377057] [<ffffffff81095ab6>] raw_notifier_call_chain+0x16/0x20
[ 72.377061] [<ffffffff8165b205>] call_netdevice_notifiers_info+0x35/0x60
[ 72.377064] [<ffffffff8165b59e>] dev_close_many+0xce/0x120
[ 72.377068] [<ffffffff8165d7f6>] dev_close.part.73+0x36/0x50
[ 72.377072] [<ffffffff8165d831>] dev_close+0x21/0x30
[ 72.377083] [<ffffffffc0383895>] cfg80211_shutdown_all_interfaces+0x45/0xb0 [cfg80211]
[ 72.377094] [<ffffffffc038392b>] cfg80211_rfkill_sync_work+0x2b/0x40 [cfg80211]
[ 72.377098] [<ffffffff81089ef2>] process_one_work+0x182/0x450
[ 72.377101] [<ffffffff8108a663>] worker_thread+0x123/0x5a0
[ 72.377105] [<ffffffff8108a540>] ? rescuer_thread+0x380/0x380
[ 72.377109] [<ffffffff810912c2>] kthread+0xd2/0xf0
[ 72.377113] [<ffffffff810911f0>] ? kthread_create_on_node+0x1c0/0x1c0
[ 72.377117] [<ffffffff8176ac3c>] ret_from_fork+0x7c/0xb0
[ 72.377121] [<ffffffff810911f0>] ? kthread_create_on_node+0x1c0/0x1c0
[ 72.377123] ---[ end trace 366f789c51388dbc ]---
ProblemType: Bug
DistroRelease: Ubuntu 14.04
Package: linux-image-3.16.0-30-generic 3.16.0-30.40~14.04.1 [modified: boot/vmlinuz-3.16.0-30-generic]
ProcVersionSignature: Ubuntu 3.16.0-30.40~14.04.1-generic 3.16.7-ckt3
Uname: Linux 3.16.0-30-generic x86_64
NonfreeKernelModules: nvidia
ApportVersion: 2.14.1-0ubuntu3.7
Architecture: amd64
CurrentDesktop: Unity
Date: Thu Aug 6 02:44:01 2015
InstallationDate: Installed on 2015-08-06 (0 days ago)
InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
SourcePackage: linux-lts-utopic
UpgradeStatus: No upgrade log present (probably fresh install)
---
ApportVersion: 2.14.1-0ubuntu3.7
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: ubuntu 1698 F.... pulseaudio
/dev/snd/controlC1: ubuntu 1698 F.... pulseaudio
CurrentDesktop: Unity
DistroRelease: Ubuntu 14.04
HibernationDevice: RESUME=UUID=899371a2-bbeb-4887-a6d6-ae545ac7830a
InstallationDate: Installed on 2015-08-06 (0 days ago)
InstallationMedia: Ubuntu 14.04.2 LTS "Trusty Tahr" - Release amd64 (20150218.1)
MachineType: Dell Inc. Latitude 3450
NonfreeKernelModules: nvidia
Package: linux (not installed)
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-3.16.0-30-generic root=UUID=3982d252-a35e-471c-8843-f038439c569f ro quiet splash
ProcVersionSignature: Ubuntu 3.16.0-30.40~14.04.1-generic 3.16.7-ckt3
RelatedPackageVersions:
linux-restricted-modules-3.16.0-30-generic N/A
linux-backports-modules-3.16.0-30-generic N/A
linux-firmware 1.127.11
Tags: trusty
Uname: Linux 3.16.0-30-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 08/04/2014
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A00
dmi.board.name: 013C62
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 9
dmi.chassis.vendor: Dell Inc.
dmi.modalias: dmi:bvnDellInc.:bvrA00:bd08/04/2014:svnDellInc.:pnLatitude3450:pvr01:rvnDellInc.:rn013C62:rvrA00:cvnDellInc.:ct9:cvr:
dmi.product.name: Latitude 3450
dmi.product.version: 01
dmi.sys.vendor: Dell Inc.
apport information