Ubuntu
mediascanner2 package

Mediascanner looping constantly causing battery exhaustion

Bug #1513756 reported by Alan Pope 🍺🐧🐱 🦄 on 2015-11-06

This bug report is a duplicate of: Bug #1501990: Daemon fails to start up when processing removable media if there are duplicate keys in media and media_attic tables. Edit Remove

This bug affects 2 people

Affects		Status	Importance	Assigned to	Milestone
	Canonical System Image	Confirmed	Critical	Alejandro J. Cura	Canonical System Image ww02-2016 "ota9"
	mediascanner2 (Ubuntu)	Confirmed	Critical	James Henstridge

Bug Description

Woke up to find my krillin retail device on OTA-7 battery almost dead. I unplugged it when I went to bed last night, so it discharged completely in ~10 hours.

http://people.canonical.com/~alan/screenshots/device-2015-11-06-083113.png

ssh'ed in and found mediascanner consuming some CPU time (I haven't changed the media on the device for some time). Checking the logs (attached) it looks like this has been happening for days. Due to UOS and other things I've not used this phone much over the past week, so it's juts been sat there dying until I plug it in.

mediascanner log attached. I don't think this is bug 1508142 because I checked and I have no webm files on the device, and it doesn't seem to be scanning, just starting and dying.

Revision history for this message

Alan Pope 🍺🐧🐱 🦄 (popey) wrote on 2015-11-06:

mediascanner-2.0_full.log.gz Edit (924.9 KiB, application/octet-stream)

Revision history for this message

Launchpad Janitor (janitor) wrote on 2015-11-06:

Status changed to 'Confirmed' because the bug affects multiple users.

Changed in mediascanner2 (Ubuntu):
status:	New → Confirmed

Revision history for this message

dinamic (dinamic6661) wrote on 2015-11-06:

same here with arale rc-proposed, had 60% before going to sleep. i caught mediascanner a couple of time eating the battery for no reason.

Revision history for this message

Jean-Baptiste Lallement (jibel) wrote on 2015-11-06:

From popey's logs

Volume /media/phablet/4332-3D21 was mounted.
terminate called after throwing an instance of 'std::runtime_error'
what(): UNIQUE constraint failed: media.id

Then mediascanner restarts 3 times per second.

It is similar to Tafari's logs in bug 1508873

Changed in canonical-devices-system-image:
status:	New → Confirmed
Changed in mediascanner2 (Ubuntu):
importance:	Undecided → High
Changed in canonical-devices-system-image:
importance:	Undecided → High
assignee:	nobody → Alejandro J. Cura (alecu)
milestone:	none → ww46-2015

Alejandro J. Cura (alecu) on 2015-11-10

Changed in mediascanner2 (Ubuntu):
assignee:	nobody → James Henstridge (jamesh)
Changed in canonical-devices-system-image:
importance:	High → Critical
Changed in mediascanner2 (Ubuntu):
importance:	High → Critical

Alejandro J. Cura (alecu) on 2015-11-10

Changed in canonical-devices-system-image:
milestone:	ww46-2015 → ww02-2016

Revision history for this message

James Henstridge (jamesh) wrote on 2015-11-11:

Alan's log makes this look like a dupe of bug 1501990, which was fixed in the 0.108 release so will be fixed in OTA-8. Installing the latest rc-proposed image should verify if this is the case. It should automatically fix up your existing media database, so there is no manual changes necessary.

@dinamic6661: This fix should already be in rc-proposed, so if you are still seeing it and have mediascanner2.0 version 0.108 installed, please file another bug and include the log file.