This bug is missing log files that will aid in diagnosing the problem.
While running an Ubuntu kernel (not a mainline or third-party kernel)
please enter the following command in a terminal window:
apport-collect 1871430
and then change the status of the bug to 'Confirmed'.
If, due to the nature of the issue you have encountered, you are unable
to run this command, please add a comment stating that fact and change
the bug status to 'Confirmed'.
This change has been made by an automated script, maintained by the
Ubuntu Kernel Team.
** Changed in: linux (Ubuntu)
Status: New => Incomplete
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https://bugs.launchpad.net/bugs/1871430
Title:
iwlwifi/iwlmvm & Intel 9260 made kernel unstable since 4.15.0-91
Status in linux package in Ubuntu:
Incomplete
Bug description:
My home server/router/access point runs under Ubuntu 18.04.4 with all updates
and has 2 wifi adapters operated by hostapd
one is USB AR9271 (0cf3:9271, driver ath9k_htc), another is PCIe Intel AC
9260 (8086:2526, driver iwlwifi).
with kernel 4.15.0-88 it worked quite stable, with reboots required mostly
after kernel upgrades (much less frequent reboots due to panics)
with kernel 4.15.0-91 and -96 it started rebooting by itself by panic when a
lot of activity happening via Intel 9260.
In /etc/sysctl* I have kernel.panic=10 , kernel.softlockup_panic=1 and
kernel.panic_on_oops=1 overrides of default values.
In dmesg logs preceding the reboot, I see multiple warnings with stacks
inside iwl_mvm functions which I could provide by apport. Also, multiple
messages like "Command LQ_CMD: a command is already active!" or "Error sending
LQ_CMD: time out after 2000ms"
Unfortunately I run this box headless and I don't have another wired Ethernet
host to capture its panics by netconsole
The rest of hardware is pretty standard. Asus B85M-G mobo, Core i3-4130T CPU,
nothing overly special.
More details I would provide in your further requests but the current kernel
behavior is very annoying.
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