Attaching stacktrace of all threads with debug symbols for unity-scopes- api, unity-scopes-shell and unity8-private.
I can easily reproduce the problem on frieza with News scope, by just pulling to refresh a couple of times. I wasn't able to reproduce it with Nearby scope. I've attached with gdb to the running dash and my attention was drawn by VerticalJournal::addItemToView; a breakpoint + a simple gdb script to count all calls when this problem is reproduced reveals that it's being called repeatedly in a loop - I've counted 23000+ hits and it's growing (with this bp and gdb overhead the dash runs much slower and I bet it will take a while before it gets killed). This is the backtrace when addItemToView breakpoint gets hit: Breakpoint 2, VerticalJournal::addItemToView (this=0x105a898, modelIndex=0, item=0x1810ef0) at /build/unity8-PQzVl4/unity8-8.12+15.04.20160707/plugins/Dash/verticaljournal.cpp:129 129 in /build/unity8-PQzVl4/unity8-8.12+15.04.20160707/plugins/Dash/verticaljournal.cpp $22149 = 22149 #0 VerticalJournal::addItemToView (this=0x105a898, modelIndex=0, item=0x1810ef0) at /build/unity8-PQzVl4/unity8-8.12+15.04.20160707/plugins/Dash/verticaljournal.cpp:129 #1 0xeac150d2 in AbstractDashView::createItem (this=this@entry=0x105a898, modelIndex=0, asynchronous=asynchronous@entry=false) at /build/unity8-PQzVl4/unity8-8.12+15.04.20160707/plugins/Dash/abstractdashview.cpp:252 #2 0xeac152c0 in AbstractDashView::addVisibleItems (this=0x105a898, fillFromY=0, fillToY=389, asynchronous=<optimized out>) at /build/unity8-PQzVl4/unity8-8.12+15.04.20160707/plugins/Dash/abstractdashview.cpp:221 #3 0xeac15332 in AbstractDashView::refill (this=0x105a898) at /build/unity8-PQzVl4/unity8-8.12+15.04.20160707/plugins/Dash/abstractdashview.cpp:186 #4 0xeac15392 in AbstractDashView::updatePolish (this=0x105a898) at /build/unity8-PQzVl4/unity8-8.12+15.04.20160707/plugins/Dash/abstractdashview.cpp:324 #5 0xec8c6ee0 in QQuickWindowPrivate::polishItems() () from /usr/lib/arm-linux-gnueabihf/libQt5Quick.so.5 #6 0xec8a8da2 in ?? () from /usr/lib/arm-linux-gnueabihf/libQt5Quick.so.5 So, is this perhaps related to the Vertical Journal? ** Attachment added: "dash.txt" https://bugs.launchpad.net/canonical-devices-system-image/+bug/1599754/+attachment/4697363/+files/dash.txt -- You received this bug notification because you are a member of Ubuntu Touch seeded packages, which is subscribed to unity-scopes-shell in Ubuntu. https://bugs.launchpad.net/bugs/1599754 Title: Dash restarts in the middle while refreshing or navigating Status in Canonical System Image: Confirmed Status in frieza: New Status in unity-scopes-shell package in Ubuntu: Confirmed Bug description: current build number: 15 device name: frieza channel: ubuntu-touch/rc/bq-aquaris-pd.en last update: 2016-07-04 18:00:02 version version: 15 version ubuntu: 20160629 version tag: OTA-12-rc version device: 20160622.0 version custom: 20160624--41-15-vivid Steps: 1.Open news scope 2.Change the number of results in scope setting repeatedly actual: Sometimes, scopes hangs in refreshing state for ~3 minutes, then dash restarts expected: no hang and dash restart To manage notifications about this bug go to: https://bugs.launchpad.net/canonical-devices-system-image/+bug/1599754/+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
