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This topic comprises 2 pages: 1 2
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Author
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Topic: Suspected DSS200/cat745 bug - CPL won't play until SPL deleted and remade
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Leo Enticknap
Film God
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Posts: 7474
From: Loma Linda, CA
Registered: Jul 2000
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posted 11-13-2016 12:12 PM
Thought I'd throw this out there as a heads up in case anyone else experiences a similar problem.
System: Dolby DSS200 server, cat745 IMB with software version 4.8.8.4, and Barco DP4K-32B projector.
DCP: CPL name = ToniErdmann_FTR-3_F_DE-EN_OV_51_2K_SPC_20160920_DTB_IOP_OV ; UUID = 4c5e8901-b943-4bf4-8b8b-7018a8085bce.
The DCP and KDM were ingested with no reported errors. On Friday night, a show playlist was compiled including this CPL; it was tested, and all was good.
The following day, this CPL would not play. When selected manually, Show Manager said "Checking content and licenses" for a few seconds, and then went back to "Please select a show for playback." I've had this happen once before, a few months ago (in a different theater, but also a DSS200/cat745), and on that occasion, deleting the entire DCP and then reingesting it fixed it. Not this time, however.
What eventually did get this DCP to play is deleting the show playlist that had been compiled the previous night, and remaking it. With the playlist deleted, we were able to select and play that CPL individually, and then compile another playlist containing it, which we were also able to play.
The festival organizers also reported that this DCP, ingested from the same drive, played without any issues at another theatre, which has a GDC server.
This sounds to me like another Dolby 4.8.8.4 software bug, one which will hopefully be fixed in 4.9.0. But I thought I'd mention this, to put it online in case anyone else experiences the same problem and Googles it.
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Steve Guttag
We forgot the crackers Gromit!!!
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Posts: 12814
From: Annapolis, MD
Registered: Dec 1999
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posted 11-13-2016 08:16 PM
The fact is, prior to the DCI security crap, the system 4.3.5.9 was the most reliable server software out there (any brand). I've had it running on some servers for YEARS without a single hiccup or need for reboot.
The DCI subtitles are a moving target, the need to handle both interop and SMPTE packages are a moving target and even dealing with the oddities of various projectors I've seen issues.
For Dolby, of the DCI software, System 4.4.2.10 was the most stable. Starting with 4.5 they had to work with a new server (DSS220) and the IMB (CAT745) and thus started marching down the path of oddities and working with new stuff and incorporating features. I didn't like any of the 4.6es though they were better than 4.5, which felt like it was forced out to get the CAT745 going.
4.7 seemed more of a fix for 4.5-4.6 than anything else and though it had features (being able to force the Engima to barf its contents to keep it from bricking) it didn't bring much more to the table than better stability that seemed to be lost in the 4.5 range.
4.8 brought "intermission shows" which few of our customers have used but it did bring instant show-start (no more rechecking licenses when the show starts) which was universally praised by our customers.
"Disconnected" has, by FAR been my biggest beef with 4.8. It prevents automatic reboots (one never knows if it is going to come back fully) and sets one up for crashes due to memory leaks. 4.8.9.12 seems to be less susceptible to Disconnected but it is too early to tell. I'm migrating all of our customers there from any other version of 4.8. I don't think any of the reboots I've done on 4.8.9.12 have come up disconnected yet but I've been told that "the fix" isn't in that version so it may be coincidence or it may be a complex problem that portions of what will be the final fix are in there but not enough to call it fixed.
But more to the point, how everything interacts, including with uncontrollable hardware changes (this version of mother board is gone so now we are using this new version) all can play into the mix. Even hard drives and RAID controllers play into it.
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Marco Giustini
Film God
Posts: 2713
From: Reading, UK
Registered: Nov 2007
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posted 11-14-2016 02:14 PM
quote: Leo Enticknap I didn't get the email from Dolby saying that it was available, for some reason.
Nobody did AFAIK
The "Disconnected" message is very normal after a reboot. It means "The ShowManager cannot connect to the ShowStore (database) as the ShowStore is still hashing content/checking that all is good, please wait".
A "Checking content, please wait" (with a little progress bar?) would have been so much better than DISCONNECTED that doesn't mean anything to the average projection person. That's what I meant with that.
I still do not consider the cinema world as a 'moving target'. Yes, a few things have changed or have been introduced (HFR, Atmos) but after all, server manufacturers choose their own motherboards (I believe Dolby have 3 versions?), their RAID controllers, even the Hard Drives. This is any developers' paradise, hardware does not change and software follows a very strict set of rules. And as Mark said, D-Cinema was not born yesterday.
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