View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0001163 | ardour | bugs | public | 2005-12-12 14:27 | 2008-11-21 00:00 |
| Reporter | indigo | Assigned To | paul | ||
| Priority | normal | Severity | major | Reproducibility | sometimes |
| Status | closed | Resolution | fixed | ||
| Summary | 0001163: erratic playhead or broken playback when using jack transport sync | ||||
| Description | If I create a new session in ardour with nothing but jack running, open the options window, and change the timebase sync from "internal" to "sync with jack", I get various odd behaviours. About 75% of the time, playback sounds fine, but the playhead will move forward about 2 bars, then jump back 1, and repeat. It does sync with jack in a fassion, as I can see the timeline change in qjackctl. Sometimes when I stop, it will jump rapidly between the stopped position and the start of the timeline. About 20% of the time, the playhead will move normally if I hit play in ardour or on qjackctl, but no audio will be output (the mixer meters indicate no output, either) and I can't stop playback in ardour; only with another synced client like qjackctl. Spacebar does not stop nor start the transport. Once, it seemed to work correctly. Maybe I did something wrong :) My build of ardour was made a few hours ago from the CVS tarball. Jack is 0.100. Although I get this behaviour with only ardour running, my goal was to get ardour and rosegarden to sync. When I did run rosegarden, it did not seem to exhibit any problems like playhead drunkenness. | ||||
| Tags | No tags attached. | ||||
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Typically I run jackd at 44.1 kHz, 32 samples, 2 periods. I changed the buffer size to 1024, and the problem persists. |
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Also playing a loop with jack as time master is broken... But this hasn't worked for a long time now... Just set a loop range and hit the 'play loop' button. Ardour begins to stutter and ardour2<b12 just crashes... |
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I'm not able to make it crash, but if setting sync to JACK and time master, it doesn't play the loop smooth. It halts everytime it's supposed to start the loop over again. There is no problem when using internal sync I've also seen some weird behaviour, with the playhead jumping all over the place. I don't know what I did and it was a pain to make it stop. I'm not able to reproduce it, it seems |
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This is an unusual and elusive bug. I've seen the same thing on occasion, but usually when some other jack application had been synced, and had crashed - I think - I don't have enough data, so if you have time, it would be interesting to push a few variables around. Just some tuning thoughts. What kind of hardware are you running? Get the latest jackd (103). Turn on SSE (compile jack with --dynsimd) Is ardour from latest svn compiled for debugging? If so, compile it for non debug (if compiled for non-debug, compile it for debug - a debugging version might not be able to run at 32 samples/period tho). I'm tickled you can run jack - SYNCED! - at 32 samples/period. |
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in v2.0.2 if i choose jack-sync, no matter if ardour is time master or not, the playback hangs every time when it comes to the beginning of the loop. the same if i use 'loop range' funktion. cheers, doc |
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since ongoing-rev1932, but also in rev 1936 this seems to work much more better here! the playhead behaves as expected, but there are still some artifacts in the playback - often (not always) when the playback reaches the beginning of the loop i can here some noise-click-sound, which is not present in the loop if i switch to 'internal' again. but the loop definitely does not "hangs" anymore here! jackd-v0.103.0 cheers, doc edit: i just realized that this is only valid for a 0.99.3 session opened with ardour2, if i create a new session with ardour2, the playback still hangs very bad. sometimes it hangs for longer and switching to another workspace will mostly make the playhead moving again. i am here on a fluxbox1.0-rc3 |
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this is fixed here in ongoing since rev2034! cheers, doc |
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fixed by essej sometime close to svn rev 2034 (see notes) |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2005-12-12 14:27 | indigo | New Issue | |
| 2005-12-15 01:20 | indigo | Note Added: 0002422 | |
| 2007-03-19 20:22 | Harold | Note Added: 0003603 | |
| 2007-03-20 17:15 | b0ef | Note Added: 0003615 | |
| 2007-03-20 17:19 | b0ef | Note Edited: 0003615 | |
| 2007-04-12 12:57 | mtaht | Note Added: 0003798 | |
| 2007-05-11 13:21 | nowhiskey | Note Added: 0003930 | |
| 2007-05-31 23:33 | nowhiskey | Note Added: 0004036 | |
| 2007-06-03 21:34 | nowhiskey | Note Edited: 0004036 | |
| 2007-06-26 12:51 | nowhiskey | Note Added: 0004078 | |
| 2007-06-27 20:33 | paul | Status | new => resolved |
| 2007-06-27 20:33 | paul | Resolution | open => fixed |
| 2007-06-27 20:33 | paul | Assigned To | => paul |
| 2007-06-27 20:33 | paul | Note Added: 0004085 | |
| 2008-11-21 00:00 | seablade | Status | resolved => closed |
