View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0008365 | ardour | bugs | public | 2020-08-17 19:23 | 2023-06-18 04:13 |
| Reporter | unfa | Assigned To | x42 | ||
| Priority | normal | Severity | minor | Reproducibility | random |
| Status | assigned | Resolution | open | ||
| Platform | Arch | OS | Linux | OS Version | (any) |
| Product Version | 6.2 | ||||
| Summary | 0008365: Randomly introduced latency | ||||
| Description | I'm using Ardour 6.2.43 (rev 6.2-43-g15fcb5c782) - I've recently noticed random latency problems on certain tracks. Suddenly my drums or bass synth would start lagging behind the click track by 0000071:0000060 ms. At first I thought it's a problem with some plug-ins I'm using, I suspected LSP, as I've used them a lot in the affected project. But then it happened after I added submix bus to a Black Pearl Drumkit (Multi). The MIDI track was fed into multiple audio buses. These also send signal to 2 Reverb Buses in varying amounts. When I've created another bus and routed all the individual channel buses to it - the whole drum line started to noticeably lag behind the rest of the track (quite a surreal sound). Because of that I started suspecting that the problem might be caused by Ardour itself. Also - I'm not really using any plug-ins that I haven't been using in previously and I've never had such random latency introduced. If I manually set the latency of my instrument plug-ins - it lets me compensate for it, but then the unexpected latency randomly goes away and my tracks start to rush instead of lagging. After reloading the session - the latency problems seem to be gone, but re-appear randomly at times. Here's a video I've quickly made to demonstrate the problem: https://youtu.be/bWOSsuEyW0o Can anyone reproduce this? | ||||
| Tags | latency | ||||
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Does it still happen when using jack or ALSA |
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Preferences > Appearance > Toolbar > Display Latency Compensation Info Does the I/O Latency show "ambiguous latency"? |
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I'm gonna check when I encounter this again. |
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I have this problem all the time now. And from what I have observed it applies to all newly added tracks and buses. And the only solution is to reload the project. And doing it every time I add new track is very anoying. |
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@janisl This sounds like an issue with JACK2. Does using Ardour/ALSA (no JACK) help? Is this with Ardout 6.3.0 ? |
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@x42 Yes, with ALSA it works fine. It's 6.3.0. |
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> After reloading the session - the latency problems seem to be gone, but re-appear randomly at times. Could it be that you have changed jack's buffersize while Ardour is running? and from then on there were inconsistencies (existing tracks newly created ones)? |
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I don't change buffer size, and I can reproduce this every time. |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2020-08-17 19:23 | unfa | New Issue | |
| 2020-08-17 19:23 | unfa | Tag Attached: latency | |
| 2020-10-27 08:30 | soundguy30 | Note Added: 0025163 | |
| 2020-10-28 16:50 | x42 | Note Added: 0025178 | |
| 2020-10-28 17:43 | unfa | Note Added: 0025180 | |
| 2020-11-06 08:17 | janisl | Note Added: 0025202 | |
| 2020-11-06 09:59 | x42 | Note Added: 0025203 | |
| 2020-11-06 12:31 | janisl | Note Added: 0025205 | |
| 2020-11-09 17:14 | x42 | Note Added: 0025210 | |
| 2020-11-11 14:53 | janisl | Note Added: 0025214 | |
| 2020-11-21 20:10 | x42 | Relationship added | related to 0008472 |
| 2023-06-18 04:13 | x42 | Assigned To | => x42 |
| 2023-06-18 04:13 | x42 | Status | new => assigned |
