Public bug reported:

I don't know why, but I cannot remember Rosegarden ever to be working
during the last ten years.

I load up some of the examples shipped with it, try to play it, the
playback counter starts to wildly fluctuate back and forth around the
time point 0. When I try to set the HP timer as timer source for the
sequencer, the entire PC freezes. I tried this with regular linux-
generic kernel on amd64, and low-latency stock kernels from Ubuntu
16.10. The only way to get the timer on the playback display going
forward is to select a recording or playback device as a timer source.
But even then only the first note gets played and nothing more. I even
tried not having any devices connected to rosegarden, but the playback
timer just kept fluctuating around 0.

** Affects: rosegarden (Ubuntu)
     Importance: Undecided
         Status: New

** Description changed:

  I don't know why, but I cannot remember Rosegarden ever to be working
  during the last ten years.
  
- I load up some the examples shipped with it, try to play it, the
+ I load up some of the examples shipped with it, try to play it, the
  playback counter starts to wildly fluctuate back and forth around the
  time point 0. When I try to set the HP timer as timer source for the
  sequencer, the entire PC freezes. I tried this with regular linux-
  generic kernel on amd64, and low-latency stock kernels from Ubuntu
  16.10. The only way to get the timer on the playback display going
  forward is to select a recording or playback device as a timer source.
  But even then only the first note gets played and nothing more. I did
  not even have any devices connected to rosegarden at that point. I'm
  starting rosegarden by entering "pasuspender -- rosegarden".

** Description changed:

  I don't know why, but I cannot remember Rosegarden ever to be working
  during the last ten years.
  
  I load up some of the examples shipped with it, try to play it, the
  playback counter starts to wildly fluctuate back and forth around the
  time point 0. When I try to set the HP timer as timer source for the
  sequencer, the entire PC freezes. I tried this with regular linux-
  generic kernel on amd64, and low-latency stock kernels from Ubuntu
  16.10. The only way to get the timer on the playback display going
  forward is to select a recording or playback device as a timer source.
- But even then only the first note gets played and nothing more. I did
- not even have any devices connected to rosegarden at that point. I'm
- starting rosegarden by entering "pasuspender -- rosegarden".
+ But even then only the first note gets played and nothing more. I even
+ tried not having any devices connected to rosegarden, but the playback
+ timer just kept fluctuating around 0.

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https://bugs.launchpad.net/bugs/1637917

Title:
  rosegarden 16.06 plays only first note, locks up PC when trying to use
  HP timer

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