BQ Aquaris 4.5 battery drains out when blue LED is flashing

[Paul Silver]

BQ Aquaris 4.5 Ubuntu Edition has a blue/red LED on the front just below the speaker. Whenever you receive an email, text
message or so it starts flashing blue in 1 or 2 seconds intervals just to notify that you should check your phone.

I have discovered that regardless of how much battery I have (had 88% yesterday evening) this flashing LED kills the battery.
I've received an email around midnight and in the morning 7AM the phone was dead with battery 0%.
If there are no messages and the LED doesn't start phone battery holds few days with WiFi/GPS services on.
It has improved after last Ubuntu upgrade.

bq Aquaris E4.5 Ubuntu Edition
Serial JU001331
OS build number 22
Ubuntu Image part 20150508
Ubuntu build description
Ubuntu Utopic Unicorn (development branch) - armhf (20150508-031218)
Device Image part 20150505-db7b5bd
Device build description KRILIN01A-S15A_BQ_L100EN_1022_150508
Customization Image part 1431023915
Last Updated 2015-05-12

[Pat McGowan (pat-mcgowan)]

Thanks for the report and glad it has improved overall. I doubt the led itself was actually the cause of the battery drain. (mine was flashing all last night with almost no battery used.
Please check for any recent crash files. Which app are you using for email and was it in the foreground?

[Paul Silver (krzysztof-les)]

Thank you for you reply! Which files would you like me to add to the bug report?
I'm attaching apport.log and auth.log
I haven't seen any other crash files specific for this problem... syslog contains data generated after May 14 17:18:33