[Kernel-packages] [Bug 1789333] Re: linux-image-4.15.0-33-generic breaks WiFi
** Tags added: cscc
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https://bugs.launchpad.net/bugs/1789333
Title:
linux-image-4.15.0-33-generic breaks WiFi
Status in linux package in Ubuntu:
Confirmed
Bug description:
Since the upgrade from linux-image-4.15.0-32-generic to linux-
image-4.15.0-33-generic my Dell XPS 13 L322X laptop is unable to
connect to my home WiFi network. It is unable to obtain an IP through
DHCP but more in general it seems unable to receive packets. If I set
up an IP address manually I still cannot ping my router. There are no
noteworthy messages coming through dmesg though. The laptop uses an
AR9462 Wireless Network Adapter and not all WiFi networks fail to work
(but my home network fails to connect in a reproducible manner). The
following step were used to diagnose the problem:
$ 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.d/network-manager stop
$ echo -e "network={\nssid=\"HT_B23514\"\npsk=\"\"\n}"
> /tmp/wpa_supplicant.conf
$ sudo wpa_supplicant -B -iwlp1s0 -c/tmp/wpa_supplicant.conf -Dwext
$ iwconfig wlp1s0
wlp1s0IEEE 802.11 ESSID:"HT_B23514"
Mode:Managed Frequency:2.412 GHz Access Point: 00:16:FB:B2:35:14
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 mtu 1500
inet6 fe80::be85:56ff:fe8f:45f5 prefixlen 64 scopeid 0x20
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://www.isc.org/software/dhcp/
Listening on LPF/wlp1s0/bc:85:56:8f:45:f5
Sending on LPF/wlp1s0/bc:85:56:8f:45:f5
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-4.15.0-32-generic everything works fine instead:
$ 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.d/network-manager stop
$ echo -e "network={\nssid=\"HT_B23514\"\npsk=\"\"\n}"
> /tmp/wpa_supplicant.conf
$ sudo wpa_supplicant -B -iwlp1s0 -c/tmp/wpa_supplicant.conf -Dwext
$ iwconfig wlp1s0
wlp1s0IEEE 802.11 ESSID:"HT_B23514"
Mode:Managed Frequency:2.412 GHz Access Point: 00:16:FB:B2:35:14
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 mtu 1500
inet6 fe80::be85:56ff:fe8f:45f5 prefixlen 64 scopeid 0x20
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://www.isc.org/software/dhcp/
Listening on LPF/wlp1s0/bc:85:56:8f:45:f5
Sending on LPF/wlp1s0/bc:85:56:8f:45:f5
Sending on Socket/fallback
DHCPREQUEST of 10.10.10.2 on wlp1s0 to 255.255.255.255 port 67
(xid=0x518398de)
[Kernel-packages] [Bug 1789333] Re: linux-image-4.15.0-33-generic breaks WiFi
The bug is indeed fixed in the latest v4.15 stable kernel:
$ uname -a
Linux apol1 4.15.18-041518-generic #201804190330 SMP Thu Apr 19 07:34:21 UTC
2018 x86_64 x86_64 x86_64 GNU/Linux
** Tags added: kernel-fixed-upstream
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https://bugs.launchpad.net/bugs/1789333
Title:
linux-image-4.15.0-33-generic breaks WiFi
Status in linux package in Ubuntu:
Confirmed
Bug description:
Since the upgrade from linux-image-4.15.0-32-generic to linux-
image-4.15.0-33-generic my Dell XPS 13 L322X laptop is unable to
connect to my home WiFi network. It is unable to obtain an IP through
DHCP but more in general it seems unable to receive packets. If I set
up an IP address manually I still cannot ping my router. There are no
noteworthy messages coming through dmesg though. The laptop uses an
AR9462 Wireless Network Adapter and not all WiFi networks fail to work
(but my home network fails to connect in a reproducible manner). The
following step were used to diagnose the problem:
$ 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.d/network-manager stop
$ echo -e "network={\nssid=\"HT_B23514\"\npsk=\"\"\n}"
> /tmp/wpa_supplicant.conf
$ sudo wpa_supplicant -B -iwlp1s0 -c/tmp/wpa_supplicant.conf -Dwext
$ iwconfig wlp1s0
wlp1s0IEEE 802.11 ESSID:"HT_B23514"
Mode:Managed Frequency:2.412 GHz Access Point: 00:16:FB:B2:35:14
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 mtu 1500
inet6 fe80::be85:56ff:fe8f:45f5 prefixlen 64 scopeid 0x20
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://www.isc.org/software/dhcp/
Listening on LPF/wlp1s0/bc:85:56:8f:45:f5
Sending on LPF/wlp1s0/bc:85:56:8f:45:f5
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-4.15.0-32-generic everything works fine instead:
$ 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.d/network-manager stop
$ echo -e "network={\nssid=\"HT_B23514\"\npsk=\"\"\n}"
> /tmp/wpa_supplicant.conf
$ sudo wpa_supplicant -B -iwlp1s0 -c/tmp/wpa_supplicant.conf -Dwext
$ iwconfig wlp1s0
wlp1s0IEEE 802.11 ESSID:"HT_B23514"
Mode:Managed Frequency:2.412 GHz Access Point: 00:16:FB:B2:35:14
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 mtu 1500
inet6 fe80::be85:56ff:fe8f:45f5 prefixlen 64 scopeid 0x20
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://www.isc.org/software/dhcp/
[Kernel-packages] [Bug 1789333] Re: linux-image-4.15.0-33-generic breaks WiFi
Okay, I will test this when I get back at home later this evening (EST
time). The WiFi at my workplace works fine. Not sure why it selectively
fails to work with my home WiFi. If you want to gather any additional
info about what differences could be involved please let me know.
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You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1789333
Title:
linux-image-4.15.0-33-generic breaks WiFi
Status in linux package in Ubuntu:
Confirmed
Bug description:
Since the upgrade from linux-image-4.15.0-32-generic to linux-
image-4.15.0-33-generic my Dell XPS 13 L322X laptop is unable to
connect to my home WiFi network. It is unable to obtain an IP through
DHCP but more in general it seems unable to receive packets. If I set
up an IP address manually I still cannot ping my router. There are no
noteworthy messages coming through dmesg though. The laptop uses an
AR9462 Wireless Network Adapter and not all WiFi networks fail to work
(but my home network fails to connect in a reproducible manner). The
following step were used to diagnose the problem:
$ 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.d/network-manager stop
$ echo -e "network={\nssid=\"HT_B23514\"\npsk=\"\"\n}"
> /tmp/wpa_supplicant.conf
$ sudo wpa_supplicant -B -iwlp1s0 -c/tmp/wpa_supplicant.conf -Dwext
$ iwconfig wlp1s0
wlp1s0IEEE 802.11 ESSID:"HT_B23514"
Mode:Managed Frequency:2.412 GHz Access Point: 00:16:FB:B2:35:14
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 mtu 1500
inet6 fe80::be85:56ff:fe8f:45f5 prefixlen 64 scopeid 0x20
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://www.isc.org/software/dhcp/
Listening on LPF/wlp1s0/bc:85:56:8f:45:f5
Sending on LPF/wlp1s0/bc:85:56:8f:45:f5
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-4.15.0-32-generic everything works fine instead:
$ 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.d/network-manager stop
$ echo -e "network={\nssid=\"HT_B23514\"\npsk=\"\"\n}"
> /tmp/wpa_supplicant.conf
$ sudo wpa_supplicant -B -iwlp1s0 -c/tmp/wpa_supplicant.conf -Dwext
$ iwconfig wlp1s0
wlp1s0IEEE 802.11 ESSID:"HT_B23514"
Mode:Managed Frequency:2.412 GHz Access Point: 00:16:FB:B2:35:14
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 mtu 1500
inet6 fe80::be85:56ff:fe8f:45f5 prefixlen 64 scopeid 0x20
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
[Kernel-packages] [Bug 1789333] Re: linux-image-4.15.0-33-generic breaks WiFi
Would it be possible for you to test the latest upstream stable kernel?
Refer to https://wiki.ubuntu.com/KernelMainlineBuilds . Please test the
latest v4.15 stable kernel[0].
If this bug is fixed in the mainline kernel, please add the following
tag 'kernel-fixed-upstream'.
If the mainline kernel does not fix this bug, please add the tag:
'kernel-bug-exists-upstream'.
If you are unable to test the mainline kernel, for example it will not boot,
please add the tag: 'kernel-unable-to-test-upstream'.
Once testing of the upstream kernel is complete, please mark this bug as
"Confirmed".
Thanks in advance.
[0] http://kernel.ubuntu.com/~kernel-ppa/mainline/v4.15.18/
** Changed in: linux (Ubuntu)
Importance: Undecided => Medium
** Tags added: needs-bisect
--
You received this bug notification because you are a member of Kernel
Packages, which is subscribed to linux in Ubuntu.
https://bugs.launchpad.net/bugs/1789333
Title:
linux-image-4.15.0-33-generic breaks WiFi
Status in linux package in Ubuntu:
Confirmed
Bug description:
Since the upgrade from linux-image-4.15.0-32-generic to linux-
image-4.15.0-33-generic my Dell XPS 13 L322X laptop is unable to
connect to my home WiFi network. It is unable to obtain an IP through
DHCP but more in general it seems unable to receive packets. If I set
up an IP address manually I still cannot ping my router. There are no
noteworthy messages coming through dmesg though. The laptop uses an
AR9462 Wireless Network Adapter and not all WiFi networks fail to work
(but my home network fails to connect in a reproducible manner). The
following step were used to diagnose the problem:
$ 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.d/network-manager stop
$ echo -e "network={\nssid=\"HT_B23514\"\npsk=\"\"\n}"
> /tmp/wpa_supplicant.conf
$ sudo wpa_supplicant -B -iwlp1s0 -c/tmp/wpa_supplicant.conf -Dwext
$ iwconfig wlp1s0
wlp1s0IEEE 802.11 ESSID:"HT_B23514"
Mode:Managed Frequency:2.412 GHz Access Point: 00:16:FB:B2:35:14
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 mtu 1500
inet6 fe80::be85:56ff:fe8f:45f5 prefixlen 64 scopeid 0x20
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://www.isc.org/software/dhcp/
Listening on LPF/wlp1s0/bc:85:56:8f:45:f5
Sending on LPF/wlp1s0/bc:85:56:8f:45:f5
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-4.15.0-32-generic everything works fine instead:
$ 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.d/network-manager stop
$ echo -e "network={\nssid=\"HT_B23514\"\npsk=\"\"\n}"
> /tmp/wpa_supplicant.conf
$ sudo wpa_supplicant -B -iwlp1s0 -c/tmp/wpa_supplicant.conf -Dwext
$ iwconfig wlp1s0
wlp1s0IEEE 802.11 ESSID:"HT_B23514"
Mode:Managed Frequency:2.412 GHz Access Point: 00:16:FB:B2:35:14
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 mtu 1500
inet6
