[mythtvnz] No Sound & Black screen lockup in mythfrontend 0.24

[graeme]

On 26/11/10 21:44, Jean-Yves Avenard wrote:
>
> As I explained there.
>
> The scan for audio device button has two purposes.
>
> First it scans the audio devices available on your system (Alsa,
> Pulse, OSS, Jack)
> Then it check the entry you've typed manually if it isn't found in the
> list detected above.
>
> In most cases, the typical user scenario would be:
> Go in the settings ->  general ->  audio
> Press the scan audio device.
> Then select the one you are using. Configure the options such as what
> speaker configuration you are using (Stereo, 5.1, 7.1) ; if you want
> upmixed stereo to 5.1 .
>
> 2nd scenario: if you don't see your device or you think you know
> better ; you can enter in the audio device field your own entry. The
> instant you enter something manually, everything is reset and you can
> modify everything as you wish. Set AC3 or DTS passthrough, 7.1 etc...
> irrelevant to what the audio device actually support, nor if the audio
> device actually exists or isn't usable.
>
> If you press Scan Audio Devices once again, and a custom device has
> been entered, myth will scan once again for all the devices found on
> your system, then will scan the custom entry and see if it's usable.
> If the device can't be opened (doesn't exist or is in use) you'll see
> a window stating "Audio device isn't usable".
>
> If myth can open it, it will also query how many channels it supports,
> if it's an analog or digital device, what format and sample rates are
> supported. Then it will update accordingly all the settings boxes.
>
> So if your device reports that only stereo is supported, 5.1 and 7.1
> is removed from the list. If your device is an analog one, then it
> won't display AC3 and DTS checkbox etc...
>
> Now that last step of pressing Scan Audio Device isn't compulsory, but
> it is strongly recommended because myth will tell you right away if
> there are problems with it.
>
> When upgrading from 0.23, you do not have to go into the audio
> settings and reconfigure. It's just the recommended approach to make
> sure everything is right.
>
> If you are upgrading from 0.23 and earlier to 0.24-fixes SVN revision
> 27334 or later, in most cases an existing audio configuration that
> used to work, will continue to do so as backward compatibility was
> greatly improved in MythTV revision 27334.
>
> Hope this helps.
>
> JY
>
>    
Thank you for the work you put into this.
Just an idea, how about putting a directive/hint about this and other 
high prevalence gotchas or a reference to the release notes into the 
deb/mythtv upgrade messages?  It could save a lot of list bandwidth :-) .