REPRODUCIBILITY: happens reliably after using the phone for a while after a reboot
OS VERSION: 5.0.0.21
HARDWARE: c2
UI LANGUAGE: English
REGRESSION:
DESCRIPTION:
After using the phone for a while, vibration (e.g. when typing, when activating an option in the top menu) seems to crash. At the same time (?) newly started apps appear stuck for ca 10 secs after activating an option in the top menu. Subsequent activations show no delay. Right after a reboot vibration works and these delays do not happen.
PRECONDITIONS:
The device has not been rebooted recently.
STEPS TO REPRODUCE:
Reboot
Use the phone for a while
start an app
activate an option in the appâs top menu
EXPECTED RESULT:
the phone vibrates and the option is selected, no delay
102 property bool quickSelect
103
104 onMenuItemChanged: {
105 console.assert(menuItem !== null, "MenuItem is null")
106 console.assert(menuItem === null, "menuItem not null: " + menuItem.objectName)
107 }
108
109 property real _inactiveHeight // Height to show when the menu is inactive
gives (while the app is frozen):
file:///usr/lib64/qt5/qml/Sailfish/Silica/private/PulleyMenuBase.qml:106 menuItem not null:
onMenuItemChanged (file:///usr/lib64/qt5/qml/Sailfish/Silica/private/PulleyMenuBase.qml:106)
_highlightMenuItem (file:///usr/lib64/qt5/qml/Sailfish/Silica/private/PulleyMenuBase.qml:374)
onMenuContentYChanged (file:///usr/lib64/qt5/qml/Sailfish/Silica/PullDownMenu.qml:153)
file:///usr/lib64/qt5/qml/Sailfish/Silica/private/PulleyMenuBase.qml:105 MenuItem is null
onMenuItemChanged (file:///usr/lib64/qt5/qml/Sailfish/Silica/private/PulleyMenuBase.qml:105)
onActiveChanged (file:///usr/lib64/qt5/qml/Sailfish/Silica/private/PulleyMenuBase.qml:270)
_forceReposition (file:///usr/lib64/qt5/qml/Sailfish/Silica/private/PulleyMenuBase.qml:688)
close (file:///usr/lib64/qt5/qml/Sailfish/Silica/private/PulleyMenuBase.qml:440)
onVisibleChanged (file:///usr/lib64/qt5/qml/Sailfish/Silica/private/PulleyMenuBase.qml:235)
file:///usr/lib64/qt5/qml/Sailfish/Silica/private/PulleyMenuBase.qml:106 file:///usr/lib64/qt5/qml/Sailfish/Silica/private/P
ulleyMenuBase.qml:106: TypeError: Cannot read property 'objectName' of null
file:///usr/lib64/qt5/qml/Sailfish/Silica/private/PulleyMenuBase.qml:528 file:///usr/lib64/qt5/qml/Sailfish/Silica/private/P
ulleyMenuBase.qml:528: TypeError: Cannot call method 'earlyClick' of null
It seems to coincide with process ngfd hugging one processor at 100%, killing that (with -9) causes everything to work normally and smoothly except vibrations/tactile feedback being gone until restart
Can confirm. I also had a phone stuck on constant vibration when SMS arrived as the screen was off. When I pressed the button to wake it up, it stopped and I got notification that SMS arrived. Happened only twice so far as I was sending/receiving some messages.
Though the root problem in ngfd remains. So far I havenât been able to trigger that myself. Backtraces welcome if anyone is able to get it stuck or running at 100%.
Getting backtraces is a bit more coder oriented, though per se doesnât require that much coding abilities.
Requires first gdb, mentioned there for example:
After that Iâd check the pid of ngfd and do âgdb -p <the_pid>â, in gdb âthread apply all btâ followed by lots of stuff. There should be some hints about installing debugging symbols which will enhance the output, not all are needed but the ngfd related ones should be the most important.
As also someone on the c2 feedback feed has written, time seems to have solved this issue. While it happened all the time during the first two days of admittedly heavy use, I have not had this problem for three days of normal use now. As if something has settled down?
If you search the forum for ngfd, you will find that one of the ways it can get stuck is when/after/by playing certain .ogg files from the default sound sets.
If the offending one is by chance not being played it may explain why the issue is sometimes there, sometimes not.
Too early, it just happened again. No idea what I did differently now. Result is the same: no vibration and every newly started app hangs when the top menu is activated.
Often, after using Android apps, the pulley menu of native apps freezes and the entire app freezes. Ringtones and notification sounds are also muted. A reboot or killing ngfd process helps.
Thanks for the link. Looks like gstreamer internal handling of its audio pipeline. That might be the most probably problem here too. Gstreamer side might also have some device specific android bits doing decoding and ending up somehow wrong.
In other words, something like ringtone or some other alarm tone playing something that ends up being stuck, then the next feedback attempt on pulley menu getting also the app stuck.
I tried the Asan stuff as attempted there, no results. With valgrind I fixed some uninitialized data sent to vibra device, but I doubt it has an effect for this.
Ogg files might be related on some devices by the decoding gstreamer elements, not sure if thatâs the case here.
. Can you please give us a CLI command for that?