Re: [spice (stable)] Resending volume value on migration

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Hey,

On Tue, Mar 07, 2017 at 10:42:09AM -0500, Frediano Ziglio wrote:
> > Hi,
> > 
> > On Tue, Feb 28, 2017 at 11:18:15AM +0100, Victor Toso wrote:
> > > Hi,
> > >
> > > On Tue, Feb 28, 2017 at 04:56:54AM -0500, Frediano Ziglio wrote:
> > > > > 
> > > > > From: Victor Toso <me@xxxxxxxxxxxxxx>
> > > > > 
> > > > > Hi,
> > > > > 
> > > > > This patch is actually an improvement of an old patch [0]. It fixes
> > > > > rhbz#1425443
> > > > > here. I'm sending this for stable branch only as we might have a better
> > > > > way
> > > > > to
> > > > > do it on the current master as a lot has been improved.
> > > > > 
> > > > > [0]
> > > > > https://lists.freedesktop.org/archives/spice-devel/2015-April/019605.html
> > > > > [1] https://bugzilla.redhat.com/show_bug.cgi?id=1425443
> > > > > 
> > > > > Let me know if this seems good enough for stable branch.
> > > > > 
> > > > > Victor Toso (1):
> > > > >   sound: do not change volume or mute state on migration
> > > > > 
> > > > >  server/snd_worker.c | 12 ++++++++++++
> > > > >  1 file changed, 12 insertions(+)
> > > > > 
> > > >
> > > > Patch looks good.
> > > > Didn't manage to test (I never managed to try a migration, my fault).
> > > > What do you mean by stable branch? 0.13.3 or 0.12.8 ?
> > > 
> > > 0.12 branch which has the stable releases, 0.12.8 being the last one!
> > > In git master, this volume-jumps are much improved in my tests but I
> > > didn't manage to try migration with upstream yet.
> > >
> > > Cheers,
> > >         toso
> > 
> > Just to confirm. I just tested spice from git master in the same
> > environment of rhbz#1425443 and I did not see any volume-jump.
> > 
> > Sounds good to have this in the stable branch only?
> > 
> >         toso
> > 
> 
> This quite surprise me. I really don't understand how we manage to
> fix this? Did we fix as regression? Looks like sometimes a regression
> could be even a good thing :-)
> Mumble... maybe the old was sending mute+volume while now we just send
> volume? Or something like that? Can you see if there is a difference
> in the messages sent by 0.12 and 0.13?
>
> Frediano

I'm glad that you asked :)

On my first tests I was only paying attention to the volume bar in the
client and in the guest. After migration I would see it move in the
client with 0.12.4 but not with 0.13.3.

Might be a regression, I've filed:
https://bugs.freedesktop.org/show_bug.cgi?id=100136

In the logs that I've filed, looking into the client you can see that
with 0.12.4 we got:

spice-session.c:1806 main-1:0: migration: all channel migrated, success
...
spice-session.c:1743 no migration in progress
...
spice-channel.c:2330 playback-5:0: unfreeze channel
...
spice-channel.c:2642 playback-5:0: Coroutine exit playback-5:0
...
/* Bellow is the bug that I'm trying to fix with this patch */
spice-pulse.c:730 record volume changed 65536
spice-pulse.c:730 record volume changed 65536
spice-gtk-session.c:203 inputs-3:0: client_modifiers:0x2, guest_modifiers:0x0
spice-pulse.c:622 playback volume changed 65536
spice-pulse.c:622 playback volume changed 65536
...
channel-playback.c:371 playback-5:0: playback_handle_start: fmt 1 channels 2 freq 44100 time 243933442

--

Now, the same is not true with 0.13.3+ (upstream) as after `coroutine
exit playback` we don't receive neither the volume messages nor the

Cheers,
        toso

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