I've tracked it down to this indicator-datetime landing: https://requests.ci-train.ubuntu.com/#/ticket/893
Downgrading indicator-datetime to the version below (or simply stopping it before following the repro steps above) prevents the freeze. https://launchpad.net/~ci-train-ppa-service/+archive/ubuntu/stable- phone-overlay/+sourcepub/5495431/+listing-archive-extra ** Changed in: unity8 (Ubuntu) Status: Confirmed => Incomplete ** Also affects: indicator-datetime (Ubuntu) Importance: Undecided Status: New -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to unity8 in Ubuntu. https://bugs.launchpad.net/bugs/1560188 Title: unity8 hang w/ CPU pegged Status in Canonical System Image: Confirmed Status in indicator-datetime package in Ubuntu: New Status in ubuntu-settings-components package in Ubuntu: New Status in unity8 package in Ubuntu: Incomplete Bug description: To trigger: 1. Wipe (or freshly flash) rc-proposed on a krillin or mako 2. Log in, configure time zone 3. Tilt the phone to make the screen rotate At this point, the UI stopped responding and 'top' showed 100% CPU being used by unity8. I tried to get data from gdb, but it wasn't very helpful: (gdb) bt #0 0xa803cce2 in ?? () #1 0xa803cb98 in ?? () Backtrace stopped: previous frame identical to this frame (corrupt stack?) More details are needed. To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1560188/+subscriptions -- Mailing list: https://launchpad.net/~touch-packages Post to : touch-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~touch-packages More help : https://help.launchpad.net/ListHelp