OxygenOS missing notifications & getting them back

_posts/2016-12-11-oxygenos-missing-notifications.md

@@ -0,0 +1,49 @@
+---
+layout: post
+comments: true
+title: "OxygenOS missing notifications and how to get them back"
+category: [english]
+tags: [english, OxygenOS, Android, notifications]
+---
+
+*Written for OxygenOS OP3_O2_Open_7 (community build), no idea if this
+ happens on stable builds, but it will probably start happening there.*
+
+A few weeks ago I got annoyed by a new update which introduced "a smart
+background app killing mechanism" as after that I stopped receiving
+notifications. I tolerated it for some time and, as this is some time after
+I returned to Telegram, I went to
+[r/OnePlus Telegram group](https://www.reddit.com/r/oneplus/comments/4bucfp/introducing_the_official_roneplus_telegram_group/) asking for help after
+official support had had no idea on what is the issue.
+
+They immediately had the answer, open *Settings*, go to *Battery*,
+touch the *three dots*, select *Aggressive doze & app hibernation* and
+disable *Enable aggressive doze & app hibernation*.
+
+> When this is enabled, doze will operate more aggressively. Background
+> apps will automatically enter hibernation.
+
+It might sound like a good idea, but it kills notifications from mostly
+all apps and I already use Greenify's Aggressive Doze which is just the
+normal Android doze launched in a few minutes instead of a few hours
+and it respects my whitelist.
+
+This might have fixed notifications as long as I started the apps after
+booting at least once, but if I didn't start the app, I would miss
+notifications until I started the app. I thought this was a bug and was
+patiently waiting for fix, until accidentally finding out what is the
+problem.
+
+Open *Settings* again, go to *Apps* this time and there select the *wheel*
+next to the three dots and under *Advanced* open *App auto-launch*. Disable
+*App auto-launch* and reboot and be surprised when all notifications
+work again!
+
+> When you turn it on, the system will prevent these apps from launching in
+> the background.
+
+This might also seem like a good idea, but I still have Greenify
+hibernating apps that I don't care about enough to have them receiving
+notifications all the time, but I would appreciate communication apps
+to send notifications to me regardless of whether I open them after boot
+by myself or not.