[tablet][bug] Battery drain, crash-happy dalvik, performance problems

asked 2015-10-27 10:43:18 +0300

t-lo

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http://www.thilo-fromm.de...

updated 2017-04-01 02:02:48 +0300

nthn

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I got my tablet ~2 weeks ago; so far it's been a real pain to use. I'm on 2.0.0.10 (Early Access), and I use the Lastu cover (with magnets). My pain points are:

Something is substantially wrong with the power saving. When the screen goes blank, applications drop all networking. This affects all connections from and to the tablet. Kernel networking seems intact, though (i.e. ICMP still works). However after just one night lying around the tablet would still lose about 40% of battery power.
The resolution seems way too high for the GPU to handle; this has already been noted in other threads. Granted, there's no app in the Jolla app store where this would be noticed (since there are very few tablet apps). However Android apps would stutter, lag, or crash. This affects mixed 2D/3D apps with high-res graphics, like "Beat Buddy" or "Botanicula".
Talking about Android compatibility, this seems to be highly unstable on the tablet overall. Apps are very crash-happy on the tablet while running rock-solid on the phone.

Before you guys roast me and tell me to go get an Android tablet - please keep in mind that the Jolla store has a _really_ limited amount of apps, even more so for the tablet. Please also remember that there has been vocal criticism wrt. the limitations of the Jolla core apps; currently, Android apps are the only way around this.

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Remember that the tablet is running a new version of Dalvik than the phone, based on Android 4.4. There's bound to be some extra instability. If you're getting crashes, it would be good to post stacktraces from them so the bugs can be tracked down.

Andy Branson ( 2015-10-27 10:47:43 +0300 )edit

@Andy Branson Where to find the stack traces? Are they in the journal?

t-lo ( 2015-10-27 10:49:37 +0300 )edit

I think it's more reliable to invoke the app from the terminal though, so you get them there. I have seen them in the journal though.

Andy Branson ( 2015-10-27 10:52:12 +0300 )edit

No prob, I'll figure something out and will get back here with a stack trace. May take me a day or so, though.

t-lo ( 2015-10-27 10:54:29 +0300 )edit

So it's completely different to the last time I tried this on the phone. Launch the apps normally, and you'll find crash logs in /opt/alien/data/system/dropbox

Andy Branson ( 2015-10-27 11:13:38 +0300 )edit

answered 2015-10-29 10:29:13 +0300

Andy Branson

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I don't think you're going to get any further without eliminating the Google Play services from the question. It has always been made extremely clear that no Jolla device is certified to run, nor supports, those services. Therefore, it isn't really fair to criticize the tablet for performing poorly when they're installed, especially when those claims aren't being confirmed by other tablet owners. It is feasible that all three of your stated problems are caused by the presence of Google Play Services.

Here's how I'd proceed:

Save your apks for later use
Uninstall Android Support
Clean up any remaining cruft
Reinstall Android Support
Sideload your APKs from step 1

Hopefully that would help with all three steps, but if you're not confident that all the Google stuff was removed in step 3, a factory reset of the tablet would be the best.

If you confirm these problems to be caused by Google Play, then I think it would be best to change this question's title and description to reflect that. Although the google stuff isn't officially supported, I'm sure some people in Myriad use them unofficially, and may take your report into account as they stabilize their new Alien Dalvik version.

If the problems remain without Play, then we can further compare our tablet configs to get to the bottom of the problem.

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Comments

The problems remain without play. Also, as has been mentioned, the phone runs the same services - plus additional ones - just fine.

t-lo ( 2015-10-29 10:55:52 +0300 )edit

As I said above - the phone runs a completely different version of Alien Dalvik than the tablet. The fact that the phone runs those services fine is not evidence that the tablet should.

Andy Branson ( 2015-10-29 11:09:35 +0300 )edit

@Andy Branson So I spent half a day re-setting my device, re-setting up all my accounts, not having play store, and the problem persists. It is a hilarious fact on its own that this seems to be a standard workflow to recover from issues. However, it did not help in my case.

Lessons learned: It's not the Play services. It's Jolla "engineering".

And seriously, I'm fed up beyond repair with this kind of behaviour. I predicted this exact reaction in the Plus post you also comment on, I predicted that Jolla will give a damn about it, and I stick to my prediction that TJC will soon have forgotten about this issue w/o it being fixed or even openly discussed. Sometimes being right is no fun.

t-lo ( 2015-10-29 11:57:39 +0300 )edit

Predicting that someone will suggest the obvious solution to your problem isn't so impressive. But I didn't tell you go go and buy an Android tablet, just tried to help you eliminate the Play question.

Your second prediction has more to do with your attitude. You don't seem to want to solve your problem, just moan about Jolla. Don't expect anyone to engage with your problems there. I give up.

Andy Branson ( 2015-10-29 12:07:56 +0300 )edit

I'm fed up beyond repair with this kind of behaviour"

What kind of behaviour? Do you think the sailors are magicians who just know what might have gone wrong in your case? I can understand that you feel 'fed up' after spending half a day trying to fix things and it didn't help. But everybody here tried to help.

Jolla doesn't have the money raining ad subventions or the lucrative apple hardware profits. It's a very small company with a huge amount of work to do. Don't you think the sailors sometimes also get fed up about us customers not be able to understand this?

chappi ( 2015-10-29 17:01:07 +0300 )edit

[tablet][bug] Battery drain, crash-happy dalvik, performance problems

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[tablet][bug] Battery drain, crash-happy dalvik, performance problems

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