Additional information with kaihengfeng's comment. dmesg shows wifi stops working after suspend and resume. wifi driver also tried to restart hardware but failed:
[ 459.548998] e1000e: enp0s25 NIC Link is Down [ 461.601935] iwlwifi 0000:03:00.0: Error sending REPLY_SCAN_ABORT_CMD: time out after 2000ms. ... [ 461.865575] ieee80211 phy0: Hardware restart was requested ... [ 467.757292] Hardware became unavailable during restart. If this is the case, please try to re-initialize wifi driver by "sudo modprobe -r iwlwifi; sudo modprobe iwlwifi". -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1891130 Title: unable to connect to wifi To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1891130/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
