To pad out the bug description a little more, the laptop will 100% reliably DROP network link any time you either connect, or disconnect the mains power cord. Sometimes it will reestablish link, sometimes it won't and will require a hard wifi toggle via keyboard hotkeys.
dmesg contains output like: [205678.104200] iwlwifi 0000:02:00.0: RF_KILL bit toggled to enable radio. [205678.138464] iwlwifi 0000:02:00.0: L1 Disabled; Enabling L0S [205678.138867] iwlwifi 0000:02:00.0: Radio type=0x1-0x2-0x0 [205678.191177] IPv6: ADDRCONF(NETDEV_UP): wlan0: link is not ready [205684.603371] wlan0: authenticate with 1c:af:f7:43:23:bc [205684.605213] wlan0: send auth to 1c:af:f7:43:23:bc (try 1/3) [205684.607126] wlan0: authenticated [205684.607442] wlan0: associating with AP with corrupt beacon [205684.610665] wlan0: associate with 1c:af:f7:43:23:bc (try 1/3) [205684.614513] wlan0: RX AssocResp from 1c:af:f7:43:23:bc (capab=0xc31 status=0 aid=3) [205684.618736] wlan0: associated [205684.619216] IPv6: ADDRCONF(NETDEV_CHANGE): wlan0: link becomes ready ..during each plug/unplug event. After using the workarounds in this bug no such messages appear, even though the power save state of the device has changed as normal. Pure speculation on my part, but it seems that the driver issues a brief flip of the rfkill bit when you ask it to change the power state this way. I would call that a driver bug, not a pm-utils bug. Other than this the driver is rock solid stable and performs well. This issue doesn't occur in Windows. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1011388 Title: Network disconnects and needs rf-kill bit switched after plugging / unplugging power cord To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/pm-utils/+bug/1011388/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
