More system information:
lspci -vn gives:
05:00.0 0280: 8086:24f3 (rev 3a)
Subsystem: 8086:1010
Flags: bus master, fast devsel, latency 0, IRQ 142
Memory at df100000 (64-bit, non-prefetchable) [size=8K]
Capabilities: [c8] Power Management version 3
Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+
Capabilities: [40] Express Endpoint, MSI 00
Capabilities: [100] Advanced Error Reporting
Capabilities: [140] Device Serial Number e4-a7-a0-ff-ff-a3-07-c8
Capabilities: [14c] Latency Tolerance Reporting
Capabilities: [154] L1 PM Substates
Kernel driver in use: iwlwifi
Kernel modules: iwlwifi
Also attached wpa_supplicant log (although I set the log level to debug too
late for this time).
Notice that wpa_supplicant stops doing group rekeying about 15 minutes before
the network disconnected (around 11:25), and all the messages from 13:57 and on
are from the 2 reconnection attempts. It seems there was no automatic attempt
at reconnection that reached wpa_supplicant.
** Attachment added: "wpa_supplicant log"
https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1703838/+attachment/4913485/+files/wpa_sup%20failure%20to%20reconnect2
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https://bugs.launchpad.net/bugs/1703838
Title:
Failure to automatically reconnect after drop - requiring manual
reconnect, only successful after second try
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