In the past few days, I have observed that:
- if my wireless connection is set on the 5 GHz band
- when the router switches the channel
- a notification that the connection is lost is displayed
- within seconds, a new connection is made on the 2.4 GHz band (I have a
connection profile with lower
This bug is not present with other distro's I use, that is Arch. This
indicates that it can be distribution centric. Ubuntu has the bug, Arch
does not. A workaround is if your system has this Intel device use
another distro. It is not convenient but it works.
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Maybe I was too happy too soon. Today, using iwd, when the channel on
the 5 GHz network switched, the connection was lost but there was no
notification and it was impossible to connect to another ssid. The log
files didn't grow endlessly though.
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I tested my wifi with *** iwd *** instead of *** wpa_supplicant***, following
this "Call for testing: improved WiFi via iwd":
https://discourse.ubuntu.com/t/call-for-testing-improved-wifi-via-iwd/17795
When connected on the 5 GHz network, when the channel switches, syslog
and kern.log no longer
Same issue here. Ubuntu 20.04 fully updated running on a Dell Latitude
5590. Started after VPN connection over wifi. It works ok sometime and
then VPN and network stopped working in this case. Changing to cabled
connection just in case meanwhile the issue gets solved.
Pasting repeated log just in
https://bugzilla.kernel.org/show_bug.cgi?id=204873, and it suggests the
fix
https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/drivers/net/wireless/intel/iwlwifi/mvm/rxmq.c?id=d829229e35f302fd49c052b5c5906c90ecf9911d
has been landed in v5.5.
** Bug watch added: Linux
Same issue here (logs filling up the disk because of wifi-related
messages; wifi connection lost) but with an older kernel version:
5.3.0-62-generic.
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The behaviour on channel switch on the 5 GHz band seems somehow erratic as what
happens can be either:
1 - what I described in post #23
2 - syslog and kern.log grow endlessly, as seen before
3 - the wifi card disconnects and manages to reconnect itself as seen in
included log file "syslog
With the recent updates, including:
kernel 5.4.0-40-generic x86_64 and (I suspect) wpasupplicant 2:2.9-1ubuntu4.1
The behaviour has changed: on channel switch the log files no longer grow
endlessly but there is still no attempt to reconnect to another SSID nor
notification that the connection is
Bug is still happening with kernel 5.4.0-39-generic x86_64 and linux-
firmware 1.187.1.
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https://bugs.launchpad.net/bugs/1881214
Title:
Intel Wireless 8260 [8086:24f3]
** Attachment added: "kern (older kernel).log"
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1881214/+attachment/5382012/+files/kern%20%28older%20kernel%29.log
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By installing an OLDER mainline kernel 5.3.18-050318-generic x86_64, the
behaviour has reverted to what I had before Ubuntu 20.04, meaning: if
the router switches the canal for the 5 Ghz band, connection is lost and
then a new connection is set on the 2.4 Ghz band.
Interestingly, what can be seen
** Summary changed:
- Intel Wireless 8260 [8086:24f3] Subsystem [8086:1010] syslog and kern.log
grow endlessly - on channel switch, iwlwifi Microcode SW Error
+ Intel Wireless 8260 [8086:24f3] Subsystem [8086:1010] on channel switch,
iwlwifi Microcode SW Error: FW error in SYNC CMD
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