Hi Mathieu, I found this issue on ath9k.
04:00.0 Network controller [0280]: Qualcomm Atheros QCA9565 / AR9565 Wireless Network Adapter [168c:0036] (rev 01) Subsystem: Dell QCA9565 / AR9565 Wireless Network Adapter [1028:020e] This patch is just back to the original implementation of the upstream. Removing wifi-Signal-on-the-wifi-device-when-its-supplicant-i.patch can also fix this issue. BTW, I can also reproduce this issue on my own USB WiFi adapter. Bus 003 Device 003: ID 07b8:3072 AboCom Systems Inc 802.11n/b/g Mini Wireless LAN USB2.0 Adapter Driver=rt2800usb (Ralink RT2800 USB Wireless LAN driver.) ** Patch added: "network-manager_1.2.2-0ubuntu4.debdiff" https://bugs.launchpad.net/ubuntu/+source/network-manager/+bug/1585863/+attachment/4677977/+files/network-manager_1.2.2-0ubuntu4.debdiff -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1585863 Title: WiFi malfunction after suspend & resume stress To manage notifications about this bug go to: https://bugs.launchpad.net/network-manager/+bug/1585863/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs