Thank you for the tip, Kai-Heng Feng, I will observere what happens, when I remove "pcie_aspm=force".
I added it long time ago, Apr 2014. Reason was, that my notebook then, a Dell M2400, sometimes didn't survive resume after standby (1 of 10 times maybe). It just crashed, black screen, X11 dead. The option didn't really help that days, but it survived my config somehow ;-) However, even today with Dell E7450 I sometimes have weird situations, where system is gone that way without any "visible" cause. Last time in April with 4.10.0-8.slh.1-aptosid-amd64 (I am now on 4.11.0-0.slh.1 -aptosid-amd64), in the middle of using it, doing "nothing special". I must say, that I am using the notebook in a very "dynamic" way, that may be unusual to others: (*) I use it constantly using standby/resume, when I don't need it (*) Rebooting only on dist-upgrades, kernel-upgrades or some backups (*) Constantly plug/unplugging HW to notebook (USB-Devices, Dockingstation, ext. Monitors) I had issues, where it didn't seem to be good, to have system in a docking station, then send it to standby, remove it from dock, and resume system. I guess, that shouldn't make any difference but I try to avoid that, after some crashes . Since my last post, I didn't experience the vanishing WLAN again. Situation didn't get better overall with USB3-Devices (I miss eSata-ports). I cannot use double-bay-USB3-Adapters. Rsyncing two discs leads to Disconnects sooner or later under heavy load. Or accessing a USB2-CD/DVD and having in parallel I/O to a USB3-connected HDD, I repeatedly had the situation of USB3-HDD disconnecting. When I reconnect, and havingsame workload again, no problem for hours. And seeing USB3 having influence on your WLAN is weird :-) But I am just guessing. I will remove unnecessary kernel-parameter first and then observe. Thank you for helping! -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1615774 Title: iwlwifi queue stuck, Microcode SW error detected, "ieee80211 phy0: Hardware restart was requested To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1615774/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
