RTL8723BE throws stack trace in kernel 3.19 and disconnects
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
Linux |
Incomplete
|
Undecided
|
Unassigned | ||
linux (Ubuntu) |
Expired
|
Low
|
Unassigned |
Bug Description
Hi,
I have the well known, problem causing, RTL8723BE wifi card on Lenovo Flex 2 laptop and I'm running Ubuntu 15.04 beta. If there is too much traffic through the wifi card like downloading an iso via torrent , I get a stacktrace and the wifi disconnects and does not connect automatically. Either I have to disable the wifi and re-enable it or I have to restart my laptop to get the wifi connection back.
the stack trace is below
Apr 18 18:16:23 flex2 kernel: ------------[ cut here ]------------
Apr 18 18:16:23 flex2 kernel: WARNING: CPU: 0 PID: 0 at /build/
Apr 18 18:16:23 flex2 kernel: Kicking stuck page flip: queued at 169616, now 169621
Apr 18 18:16:23 flex2 kernel: Modules linked in: uas usb_storage vmw_vsock_
Apr 18 18:16:23 flex2 kernel: videodev snd_seq_midi_event ablk_helper media ttm snd_rawmidi cryptd joydev snd_seq dm_multipath snd_seq_device scsi_dh drm_kms_helper mei_me snd_timer dw_dmac ideapad_laptop drm snd mei sparse_keymap shpchp lpc_ich i2c_hid snd_soc_sst_acpi i2c_algo_bit i2c_designware_
Apr 18 18:16:23 flex2 kernel: usbhid hid psmouse ahci libahci r8169 mii dm_mirror dm_region_hash dm_log sdhci_acpi sdhci
Apr 18 18:16:23 flex2 kernel: CPU: 0 PID: 0 Comm: swapper/0 Tainted: G W OE 3.19.0-12-generic #12-Ubuntu
Apr 18 18:16:23 flex2 kernel: Hardware name: LENOVO 20404/Lenovo Flex 2-14, BIOS A0CN21WW 03/21/2014
Apr 18 18:16:23 flex2 kernel: ffffffffc0748e10 ffff88012f203d28 ffffffff817c2175 0000000000000007
Apr 18 18:16:23 flex2 kernel: ffff88012f203d78 ffff88012f203d68 ffffffff8107595a ffff88012f203d88
Apr 18 18:16:23 flex2 kernel: ffff88012a898000 ffff8800bf12a000 0000000000000000 ffff8800bf12a1a8
Apr 18 18:16:23 flex2 kernel: Call Trace:
Apr 18 18:16:23 flex2 kernel: <IRQ> [<ffffffff817c2
Apr 18 18:16:23 flex2 kernel: [<ffffffff81075
Apr 18 18:16:23 flex2 kernel: [<ffffffff81075
Apr 18 18:16:23 flex2 kernel: [<ffffffffc06f4
Apr 18 18:16:23 flex2 kernel: [<ffffffffc06c1
Apr 18 18:16:23 flex2 kernel: [<ffffffff810b0
Apr 18 18:16:23 flex2 kernel: [<ffffffff810d5
Apr 18 18:16:23 flex2 kernel: [<ffffffff810cd
Apr 18 18:16:23 flex2 kernel: [<ffffffff810cd
Apr 18 18:16:23 flex2 kernel: [<ffffffff810d0
Apr 18 18:16:23 flex2 kernel: [<ffffffff81017
Apr 18 18:16:23 flex2 kernel: [<ffffffff817cc
Apr 18 18:16:23 flex2 kernel: [<ffffffff817ca
Apr 18 18:16:23 flex2 kernel: <EOI> [<ffffffff81664
Apr 18 18:16:23 flex2 kernel: [<ffffffff81664
Apr 18 18:16:23 flex2 kernel: [<ffffffff81664
Apr 18 18:16:23 flex2 kernel: [<ffffffff810b6
Apr 18 18:16:23 flex2 kernel: [<ffffffff817b6
Apr 18 18:16:23 flex2 kernel: [<ffffffff81d4c
Apr 18 18:16:23 flex2 kernel: [<ffffffff81d4c
Apr 18 18:16:23 flex2 kernel: [<ffffffff81d4c
Apr 18 18:16:23 flex2 kernel: [<ffffffff81d4c
Apr 18 18:16:23 flex2 kernel: ---[ end trace 78327f32f7248597 ]---
---
ApportVersion: 2.17.2-0ubuntu1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
/dev/snd/
CurrentDesktop: Unity
DistroRelease: Ubuntu 15.04
HibernationDevice: RESUME=
InstallationDate: Installed on 2014-07-28 (267 days ago)
InstallationMedia: Ubuntu 14.04.1 LTS "Trusty Tahr" - Release amd64 (20140722.2)
Lsusb:
Bus 002 Device 001: ID 1d6b:0003 Linux Foundation 3.0 root hub
Bus 001 Device 009: ID 04f3:0333 Elan Microelectronics Corp.
Bus 001 Device 003: ID 0bda:b728 Realtek Semiconductor Corp.
Bus 001 Device 002: ID 5986:055e Acer, Inc
Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: LENOVO 20404
Package: linux (not installed)
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=
ProcVersionSign
RelatedPackageV
linux-
linux-
linux-firmware 1.143
Tags: vivid
Uname: Linux 3.19.0-14-generic x86_64
UpgradeStatus: No upgrade log present (probably fresh install)
UserGroups: adm cdrom dip lpadmin plugdev sambashare sudo
_MarkForUpload: True
dmi.bios.date: 03/21/2014
dmi.bios.vendor: LENOVO
dmi.bios.version: A0CN21WW
dmi.board.
dmi.board.name: Lenovo Flex 2-14
dmi.board.vendor: LENOVO
dmi.board.version: 31900059 Std
dmi.chassis.
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.
dmi.modalias: dmi:bvnLENOVO:
dmi.product.name: 20404
dmi.product.
dmi.sys.vendor: LENOVO
affects: | linux (Ubuntu) → hwe-next |
affects: | hwe-next → linux |
tags: | added: a3cn32ww |
tags: |
added: bios-outdated-a3cn32ww removed: a3cn32ww |
This bug is missing log files that will aid in diagnosing the problem. From a terminal window please run:
apport-collect 1445775
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable to run this command, please add a comment stating that fact and change the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the Ubuntu Kernel Team.