[mythtv-users] Mythbuntu 16.04.1 (0.28) Frontend not visible

[andrew]

Mike, should i restart from the beginning? That is format the disk and start again. I have tried from scratch  a number if times already one more eill not hurt. I will then leave the backend an the frontend running for at least a half hour or more if you think it woul take longer and see how it goes.


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-------- Original message --------From: "Michael T. Dean" <mtdean at thirdcontact.com> Date: 10/11/2016  11:26 PM  (GMT+10:00) To: Discussion about MythTV <mythtv-users at mythtv.org> Subject: Re: [mythtv-users] Mythbuntu 16.04.1 (0.28) Frontend not visible 
On 11/10/2016 12:01 AM, Andrew Potter wrote:
>
> OK I had Mythbuntu 14.04 and wanted to upgrade to Mythbuntu 16.04 LTS.
>
> I downloaded the 16.04.1 ISO and installed on a fresh SSD drive. 
> Keeping the old disk as this is a production system.
>
> After the installation I restored the old Database (14.04 database) 
> tot he new system. I can see in the logs that the database was 
> upgraded and the settings all look to be correct via myth-setup.
>
> But the local frontend does not get to the display screens. I have to 
> hot alt-f4 and I get the this window is busy dialog do you wan t to 
> stop it.
>
> I have looked at the front end logs but cannot see anything
>
> The last log I see is about successfully reading the airplay rsa key.
>
> The logs are available here http://pastebin.com/KvnVSX4w
>
> I am thinking it is possibly a QT issue, ie not rendering a display 
> correctly, but I do not know enough to diagnose. Of course I could 
> also be well off the mark.
>
> Any help is greatly appreciated.
>

You're killing mythfrontend in the middle of the MythMusic database 
schema upgrade (specifically--at least in the logs provided--during the 
backup it's making before the upgrade).  If you let it run farther in 
any previous runs, it may have gotten into the middle of the upgrade, at 
which killing mythfrontend may have done bad things.  Remember that the 
backend/mythtv-setup upgrades the TV schema.  All plugin schemas are 
upgraded by the plugins themselves, which run inside the frontend.

In other words, you need to look at more than the last line in the 
log--2 lines before it said what was happening.

Nov 10 08:48:46 Master-Backend mythfrontend.real: mythfrontend[6935]: E 
CoreContext dbutil.cpp:604 (DoBackup) Backing up database with script: 
'/usr/share/mythtv/mythconverg_backup.pl'

So, you just need a bit more patience when upgrading versions, because 
backing up the database takes quite a bit of time, even if the upgrades 
go quickly (and they don't always).  (And, yes, ideally mythfrontend 
would tell you what's happening, but until someone completely 
redesigns/refactors/rewrites our database upgrade code, we don't have 
access to the (new) UI at the time when we're doing the upgrade, so we 
can't put up any messages.)

Mike
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