Re: [gentoo-dev] MythTV problem with QT's sql plugin

[Jean-Michel Smith]

On Wednesday 20 November 2002 06:07 am, Javier Marcet wrote:

> Whenever I try to run any mythtv's binaries, I get the following error:
>
> QSqlDatabase warning: QMYSQL3 driver not loaded
> QSqlDatabase: available drivers:
> couldn't open db
>
> I asked on the MythTV's mailing list, and it seems a problem to locate
> libqsqlmysql.so, I have it on /usr/qt/3/plugins/sqldrivers, which is the
> default on Gentoo if you compile QT with sql support (mysql USE flag).
> I also have the QTDIR envvar correctly set, and tried moving around the
> library, but still get the same problem.
>
> Has anyone managed to at least run any of the MythTV's programs?

YES!

I had the exact same problem (posted to the forums), when I tried to run 
./setup the first time.

I couldn't understand what was going on because I also had mysql in the USE 
variable of my /etc/make.conf, along with a bunch of other stuff, and I could 
easilly find the mysql module libraries under /usr/qt/3, yet they didn't seem 
to work.  Very weird.  In any event, it turned out that despite my USE 
including mysql, and despite building the module, qt didn't build with mysql 
quite right, for whatever reason (perhaps odbc, postgres, or some other USE 
setting conflicted or confused it).

As a 'hail mary' attempt, I remerged qt 3.1.0 as follows:

prompt#  USE="gif mysql opengl cups" emerge qt

(note that the ebuild IUSE is set to "gif nas odbc mysql opengl postgres cups" 
... I explicitly avoided other database includes that might conflict or 
confuse mysql support).

After doing this, I was able to run ./setup, and the error you described 
disappeared!  As a result, I have mythtv running after a fashion.  Note that 
I built mythtv by hand ... I haven't tried your ebuild yet.

mythtv (built by hand) is very cool, but still is a little buggy.  
* I recorded a show, but although the nuppel file exists (in a subdir off my 
home directory, reflected in the mythtv config file settings.txt) and is a 
size consistent with an hour recording, it does not appear in any of the play 
recording or delete recording lists.  mythmusic works great, as does 
myth(photo? I'm not at home to check the module name).  Haven't tried 
mythgame yet, though I do have it installed.

[ the next two are important, as I want to use a mythtv like interface on an 
HTPC connected to a 1280x720 HDTV via the dvi interface, but mythtv, or 
portions thereof, appear to be hardcoded for 640x480 ]
* watch tv scales to the full screen (1920x1200 in my case), but is so choppy 
and slow as to be unwatchable, and so unresponsive one cannot get back out of 
it. killing X will kill most (but not all) mythtv processes.  This is in 
stark constrast to tvtime, which scales to 1920x1200 beautifully, with 
perfect, fast playback.  I assume it is an xv vs. sdl thing ... it would be 
nice if mythtv could be made to use an arbitary player (mplayer) and viewer 
(tvtime), as there are specialized tools for that sort of thing that are 
excellent.  Tvtime's deinterlacing in particular absolutely rocks.
* mythtv menu screens limited to 640x480, appearing as a non-managed window in 
the upper left quadrant.

* mythtv assumes full screen mode - it would be nice to be able to run it as 
an easy gui frontend for playing music, watching video in a window, etc while 
using the desktop for other work, as a choice IN ADDITION to full screen 
"television" mode.
* mythtv's main process will not die, even with kill -9s.  I end up having to 
reboot to clear out my process table after running mythtv.

I'm interested in your ebuild ... I ended up using cpan by hand to get the 
perl modules, since building mythtv by hand didn't seem to find the emerged 
perl modules.  I'm curious to see how you fixed that.

Anyway, hope this helps you get your mythtv running!

Jean.



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