One last thing...ice in comment #12 said: "Some people say it has to do with a ASMedia USB Controller"
Have found that USB enumeration failure can cause a bottleneck in systemd getting the upower.service unit to finally start. You'll know if the system is hit with this as it'll be much slower to boot and the kernel will spew errors of the type: kernel: usb 2-1.1: device descriptor read/64, error -110 kernel: usb 2-1-port1: unable to enumerate USB device Occasionally after several suspend/resumes, I have a USB device (wireless game controller) that must be unplugged/replugged to stop this error (simply rebooting does not fix). Have found on my laptop, if the USB enumeration boots through without any error then it's quick enough to have systemd start upower.service in time before u-s-d is started, otherwise the u-s-d segfault occurs as above. Thanks :) -- You received this bug notification because you are a member of Desktop Packages, which is subscribed to upower in Ubuntu. https://bugs.launchpad.net/bugs/1546641 Title: unity-settings-daemon crashed with SIGSEGV in up_exported_daemon_get_lid_is_closed() Status in unity-settings-daemon package in Ubuntu: Triaged Status in upower package in Ubuntu: Confirmed Status in unity-settings-daemon source package in Xenial: Triaged Status in upower source package in Xenial: Confirmed Status in unity-settings-daemon source package in Yakkety: Triaged Status in upower source package in Yakkety: Confirmed Bug description: https://errors.ubuntu.com/problem/8ca9c548fc4e2fc1d4bf827bbd85c72df59313f8 Ubuntu 16.04 crashes immediately on login. Default settings not applied and appearance is a bit ugly (incorrect font hinting, in- window menus etc). --- ProblemType: Crash DistroRelease: Ubuntu 16.04 ProcVersionSignature: Ubuntu 4.4.0-6.21-generic 4.4.1 Uname: Linux 4.4.0-6-generic x86_64 ApportVersion: 2.20-0ubuntu3 Architecture: amd64 CrashCounter: 1 Date: Wed Feb 17 13:52:13 2016 ExecutablePath: /usr/lib/unity-settings-daemon/unity-settings-daemon InstallationDate: Installed on 2016-02-08 (8 days ago) InstallationMedia: Ubuntu 16.04 LTS "Xenial Xerus" - Alpha amd64 (20160205) ProcCmdline: /usr/lib/unity-settings-daemon/unity-settings-daemon ProcEnviron: LANGUAGE=pt_BR:pt:en PATH=(custom, no user) XDG_RUNTIME_DIR=<set> LANG=pt_BR.UTF-8 SHELL=/bin/false SegvAnalysis: Segfault happened at: 0x3aae60fe69 <up_exported_daemon_get_lid_is_closed+9>: mov (%rbx),%rdi PC (0x3aae60fe69) ok source "(%rbx)" (0x00000000) not located in a known VMA region (needed readable region)! destination "%rdi" ok SegvReason: reading NULL VMA Signal: 11 SourcePackage: unity-settings-daemon StacktraceTop: up_exported_daemon_get_lid_is_closed () from /usr/lib/x86_64-linux-gnu/libupower-glib.so.3 gsd_power_manager_start () from /usr/lib/unity-settings-daemon-1.0/libpower.so ?? () from /usr/lib/unity-settings-daemon-1.0/libpower.so gnome_settings_plugin_info_activate () ?? () Title: unity-settings-daemon crashed with SIGSEGV in up_exported_daemon_get_lid_is_closed() UpgradeStatus: No upgrade log present (probably fresh install) UserGroups: To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/unity-settings-daemon/+bug/1546641/+subscriptions -- Mailing list: https://launchpad.net/~desktop-packages Post to : desktop-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~desktop-packages More help : https://help.launchpad.net/ListHelp
