linux-image-4.15.0-33-generic breaks WiFi
Affects | Status | Importance | Assigned to | Milestone | |
---|---|---|---|---|---|
linux (Ubuntu) |
Confirmed
|
Medium
|
Unassigned |
Bug Description
Since the upgrade from linux-image-
$ uname -a
Linux apol1 4.15.0-33-generic #36-Ubuntu SMP Wed Aug 15 16:00:05 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
$ sudo /etc/init.
$ echo -e "network={\n ssid=\"
$ sudo wpa_supplicant -B -iwlp1s0 -c/tmp/
$ iwconfig wlp1s0
wlp1s0 IEEE 802.11 ESSID:"HT_B23514"
Bit Rate=60 Mb/s Tx-Power=19 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:off
Link Quality=70/70 Signal level=-33 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:1 Invalid misc:48 Missed beacon:0
$ ifconfig wlp1s0
wlp1s0: flags=4163<
inet6 fe80::be85:
ether bc:85:56:8f:45:f5 txqueuelen 1000 (Ethernet)
RX packets 49 bytes 9692 (9.6 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 68 bytes 15466 (15.4 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
$ sudo dhclient -v wlp1s0
Internet Systems Consortium DHCP Client 4.3.5
Copyright 2004-2016 Internet Systems Consortium.
All rights reserved.
For info, please visit https:/
Listening on LPF/wlp1s0/
Sending on LPF/wlp1s0/
Sending on Socket/fallback
DHCPREQUEST of 10.10.10.2 on wlp1s0 to 255.255.255.255 port 67 (xid=0x247b5867)
DHCPREQUEST of 10.10.10.2 on wlp1s0 to 255.255.255.255 port 67 (xid=0x247b5867)
DHCPDISCOVER on wlp1s0 to 255.255.255.255 port 67 interval 3 (xid=0x16dac52f)
DHCPDISCOVER on wlp1s0 to 255.255.255.255 port 67 interval 4 (xid=0x16dac52f)
DHCPDISCOVER on wlp1s0 to 255.255.255.255 port 67 interval 7 (xid=0x16dac52f)
DHCPDISCOVER on wlp1s0 to 255.255.255.255 port 67 interval 18 (xid=0x16dac52f)
DHCPDISCOVER on wlp1s0 to 255.255.255.255 port 67 interval 20 (xid=0x16dac52f)
DHCPDISCOVER on wlp1s0 to 255.255.255.255 port 67 interval 17 (xid=0x16dac52f)
DHCPDISCOVER on wlp1s0 to 255.255.255.255 port 67 interval 15 (xid=0x16dac52f)
...
The dhclient command never succeeds. If I revert to kernel linux-image-
$ uname -a
Linux apol1 4.15.0-32-generic #35-Ubuntu SMP Fri Aug 10 17:58:07 UTC 2018 x86_64 x86_64 x86_64 GNU/Linux
$ sudo /etc/init.
$ echo -e "network={\n ssid=\"
$ sudo wpa_supplicant -B -iwlp1s0 -c/tmp/
$ iwconfig wlp1s0
wlp1s0 IEEE 802.11 ESSID:"HT_B23514"
Bit Rate=144.4 Mb/s Tx-Power=19 dBm
Retry short limit:7 RTS thr:off Fragment thr:off
Power Management:off
Link Quality=70/70 Signal level=-24 dBm
Rx invalid nwid:0 Rx invalid crypt:0 Rx invalid frag:0
Tx excessive retries:1 Invalid misc:12 Missed beacon:0
$ ifconfig wlp1s0
wlp1s0: flags=4163<
inet6 fe80::be85:
ether bc:85:56:8f:45:f5 txqueuelen 1000 (Ethernet)
RX packets 586 bytes 364645 (364.6 KB)
RX errors 0 dropped 0 overruns 0 frame 0
TX packets 684 bytes 191764 (191.7 KB)
TX errors 0 dropped 0 overruns 0 carrier 0 collisions 0
$ sudo dhclient -v wlp1s0
Internet Systems Consortium DHCP Client 4.3.5
Copyright 2004-2016 Internet Systems Consortium.
All rights reserved.
For info, please visit https:/
Listening on LPF/wlp1s0/
Sending on LPF/wlp1s0/
Sending on Socket/fallback
DHCPREQUEST of 10.10.10.2 on wlp1s0 to 255.255.255.255 port 67 (xid=0x518398de)
DHCPACK of 10.10.10.2 from 10.10.10.251
bound to 10.10.10.2 -- renewal in 36342 seconds.
ProblemType: Bug
DistroRelease: Ubuntu 18.04
Package: linux-image-
ProcVersionSign
Uname: Linux 4.15.0-33-generic x86_64
ApportVersion: 2.20.9-0ubuntu7.2
Architecture: amd64
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/
CurrentDesktop: ubuntu:GNOME
Date: Mon Aug 27 23:35:32 2018
EcryptfsInUse: Yes
InstallationDate: Installed on 2015-12-02 (999 days ago)
InstallationMedia: Ubuntu 15.10 "Wily Werewolf" - Release amd64 (20151021)
MachineType: Dell Inc. Dell System XPS L322X
ProcEnviron:
TERM=xterm-
PATH=(custom, no user)
XDG_RUNTIME_
LANG=en_US.UTF-8
SHELL=/bin/bash
ProcFB: 0 inteldrmfb
ProcKernelCmdLine: BOOT_IMAGE=
RelatedPackageV
linux-
linux-
linux-firmware 1.173.1
SourcePackage: linux
UpgradeStatus: Upgraded to bionic on 2018-04-27 (122 days ago)
dmi.bios.date: 05/15/2013
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A09
dmi.board.name: 0PJHXN
dmi.board.vendor: Dell Inc.
dmi.board.version: A00
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.chassis.
dmi.modalias: dmi:bvnDellInc.
dmi.product.family: ChiefRiver System
dmi.product.name: Dell System XPS L322X
dmi.sys.vendor: Dell Inc.
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