[Expired for linux (Ubuntu) because there has been no activity for 60
days.]
** Changed in: linux (Ubuntu)
Status: Incomplete => Expired
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https://bugs.launchpad.net/bugs/1637704
Title:
iwlwifi crash on thinkpad yoga 12 2015
Status in linux package in Ubuntu:
Expired
Bug description:
version_signature
Ubuntu 4.4.0-43.63-generic 4.4.21
The wifi fails shortly after boot, especially when using more
bandwidth, requiring a reboot to reconnect to networks--sometimes even
multiple reboots. The issue started after upgrading to 16.04; before,
using the soft-switch for wifi on the keyboard, or searching for a
random hidden network would eliminate any connection issues.
Now, attempting to turn on wireless networking after the driver
crashes results in a temporary slowdown of my laptop, then nothing.
Bug presents in 4.4.0-45 and 4.4.0-43.
Attempted a workaround by disabling power save, disabling watchdog,
and disabling 11n.
~$ iwconfig
lo no wireless extensions.
wlp4s0 IEEE 802.11abg ESSID:"_______"
Mode:Managed Frequency:2.462 GHz Access Point: 20:76:00:48:1A:B5
Bit Rate:54 Mb/s Tx-Power=22 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:on
Link Quality=58/70 Signal level=-52 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:6 Invalid misc:8993 Missed beacon:0
docker0 no wireless extensions.
~$ ifconfig wlp4s0
wlp4s0 Link encap:Ethernet HWaddr 5c:e0:c5:09:9f:89
inet addr:192.168.0.112 Bcast:192.168.0.255 Mask:255.255.255.0
inet6 addr: fe80::1cfd:58bf:beb9:d49/64 Scope:Link
UP BROADCAST RUNNING MULTICAST MTU:1500 Metric:1
RX packets:40907 errors:0 dropped:0 overruns:0 frame:0
TX packets:25987 errors:0 dropped:0 overruns:0 carrier:0
collisions:0 txqueuelen:1000
RX bytes:42558260 (42.5 MB) TX bytes:6272926 (6.2 MB)
Restarting network-manager causes same error message as the original
failure; output of dmesg | grep iwl is attached.
After crash, wlp4s0 no longer shows up under ifconfig or iwconfig.
Same error occurs on iwlwifi-7256D-13.ucode and iwlwifi-
7256D-16.ucode.
ProblemType: Bug
DistroRelease: Ubuntu 16.04
Package: linux-image-4.4.0-43-generic 4.4.0-43.63
ProcVersionSignature: Ubuntu 4.4.0-43.63-generic 4.4.21
Uname: Linux 4.4.0-43-generic x86_64
ApportVersion: 2.20.1-0ubuntu2.1
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: gwen 2083 F.... pulseaudio
/dev/snd/controlC1: gwen 2083 F.... pulseaudio
CurrentDesktop: Unity
Date: Sat Oct 29 03:53:50 2016
HibernationDevice: RESUME=UUID=2c70b958-e0e0-4dc1-a37e-71ef9d056fb6
InstallationDate: Installed on 2016-01-23 (280 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
MachineType: LENOVO 20DL0038US
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=/boot/vmlinuz-4.4.0-43-generic
root=UUID=1ee8c80d-12f6-4663-b419-dbc5bd18f6d3 ro quiet splash vt.handoff=7
RelatedPackageVersions:
linux-restricted-modules-4.4.0-43-generic N/A
linux-backports-modules-4.4.0-43-generic N/A
linux-firmware 1.157.4
SourcePackage: linux
UpgradeStatus: Upgraded to xenial on 2016-07-13 (107 days ago)
dmi.bios.date: 02/02/2015
dmi.bios.vendor: LENOVO
dmi.bios.version: JEET58WW (1.07 )
dmi.board.asset.tag: Not Available
dmi.board.name: 20DL0038US
dmi.board.vendor: LENOVO
dmi.board.version: SDK0E50510 WIN
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: None
dmi.modalias:
dmi:bvnLENOVO:bvrJEET58WW(1.07):bd02/02/2015:svnLENOVO:pn20DL0038US:pvrThinkPadS1Yoga12:rvnLENOVO:rn20DL0038US:rvrSDK0E50510WIN:cvnLENOVO:ct10:cvrNone:
dmi.product.name: 20DL0038US
dmi.product.version: ThinkPad S1 Yoga 12
dmi.sys.vendor: LENOVO
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