unable to connect to wifi

Bug #1891130 reported by Naman Verma
6
This bug affects 1 person
Affects Status Importance Assigned to Milestone
linux (Ubuntu)
Confirmed
Undecided
Unassigned

Bug Description

My ThinkPad T430 ran very good with no issues on 1804 lts. After upgrading it is not connecting to wifi.

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: linux-image-5.4.0-42-generic 5.4.0-42.46
ProcVersionSignature: Ubuntu 5.4.0-42.46-generic 5.4.44
Uname: Linux 5.4.0-42-generic x86_64
ApportVersion: 2.20.11-0ubuntu27.6
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: naman 1446 F.... pulseaudio
CasperMD5CheckResult: skip
CurrentDesktop: ubuntu:GNOME
Date: Tue Aug 11 11:59:57 2020
InstallationDate: Installed on 2020-06-21 (50 days ago)
InstallationMedia: Ubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805)
MachineType: LENOVO 23501E3
ProcFB: 0 i915drmfb
ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-42-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash vt.handoff=7
RelatedPackageVersions:
 linux-restricted-modules-5.4.0-42-generic N/A
 linux-backports-modules-5.4.0-42-generic N/A
 linux-firmware 1.187.2
SourcePackage: linux
UpgradeStatus: Upgraded to focal on 2020-08-02 (8 days ago)
dmi.bios.date: 03/08/2013
dmi.bios.vendor: LENOVO
dmi.bios.version: G1ET93WW (2.53 )
dmi.board.asset.tag: Not Available
dmi.board.name: 23501E3
dmi.board.vendor: LENOVO
dmi.board.version: Win8 Pro DPK TPG
dmi.chassis.asset.tag: No Asset Information
dmi.chassis.type: 10
dmi.chassis.vendor: LENOVO
dmi.chassis.version: Not Available
dmi.modalias: dmi:bvnLENOVO:bvrG1ET93WW(2.53):bd03/08/2013:svnLENOVO:pn23501E3:pvrThinkPadT430:rvnLENOVO:rn23501E3:rvrWin8ProDPKTPG:cvnLENOVO:ct10:cvrNotAvailable:
dmi.product.family: ThinkPad T430
dmi.product.name: 23501E3
dmi.product.sku: LENOVO_MT_2350
dmi.product.version: ThinkPad T430
dmi.sys.vendor: LENOVO

Revision history for this message
Naman Verma (namanubuntuthinkpad123) wrote :
Revision history for this message
Kai-Heng Feng (kaihengfeng) wrote :

Only after system sleep?

Revision history for this message
Ubuntu Kernel Bot (ubuntu-kernel-bot) wrote : Status changed to Confirmed

This change was made by a bot.

Changed in linux (Ubuntu):
status: New → Confirmed
Revision history for this message
Alex Hung (alexhung) wrote : Re: unable to coonect to wifi

Additional information with kaihengfeng's comment.

dmesg shows wifi stops working after suspend and resume. wifi driver also tried to restart hardware but failed:

[ 459.548998] e1000e: enp0s25 NIC Link is Down
[ 461.601935] iwlwifi 0000:03:00.0: Error sending REPLY_SCAN_ABORT_CMD: time out after 2000ms.
...
[ 461.865575] ieee80211 phy0: Hardware restart was requested
...
[ 467.757292] Hardware became unavailable during restart.

If this is the case, please try to re-initialize wifi driver by "sudo modprobe -r iwlwifi; sudo modprobe iwlwifi".

Revision history for this message
Alex Hung (alexhung) wrote :

Since this system is upgraded from 18.04, it is also worthwhile to boot 20.04.1 USB and verify this issue. Suspend and resume can be tested in live session as well.

summary: - unable to coonect to wifi
+ unable to connect to wifi
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