View Issue Details
| ID | Project | Category | View Status | Date Submitted | Last Update |
|---|---|---|---|---|---|
| 0001873 | ardour | bugs | public | 2007-09-18 08:16 | 2020-04-19 20:12 |
| Reporter | johne53 | Assigned To | cth103 | ||
| Priority | normal | Severity | major | Reproducibility | always |
| Status | closed | Resolution | fixed | ||
| Product Version | 2.0 | ||||
| Summary | 0001873: Audio glitches with graphical activity | ||||
| Description | I've categorised this as a bug because I've been told that it's a long-standing problem with Jack. Let's say that I'm playing out a clip from Ardour's timeline. If I select the title bar of a window (any window - it doesn't need to be an Ardour window) then I physically move that window on my screen, Ardour's audio output glitches. Also, if I simply want to adjust the replayed volume, I drag the relevant mixer fader (with my mouse) and the same thing happens (audio glitching). These are both 100% repeatable. When Ardour's timeline needs to refresh (playline re-positioned to LHS) I'll hear glitching on about 50% of occasions. If I replay a crossfade I get glitching on around 70% of occasions. At first I thought these problems might be connected to my graphics card which is quite old but I've been told that other people get these problems too. At the time of writing, Linux is running from a simple EIDE drive - but I get these problems, even when replaying just one stereo clip, which I'd assume to be well within the bandwidth of EIDE. Jack is configured to start automatically whenever I start Ardour. Latency is set at 1024. Reducing the latency makes the problem much worse - but if I try to increase the latency, Ardour immediately crashes (disappears from my screen). | ||||
| Additional Information | Mobo: Asus A7V8X-X Processor: AMD Athlon 1.25GHz Memory: 1.5Mb Sound card: RME Hammerfall DSP 9632 Graphics: Matrox Millennium G400 (dual-head enabled) Drives: Mixture of EIDE and SCSI Jack: Latency = 1024 (can't seem to increase) Typical buffer/DSP settings:- p: 79% c: 99% DSP 44% | ||||
| Tags | No tags attached. | ||||
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Hmmm... it's possible I've been fed a bum steer on this one. I've realised that if I increase Jack latency to 2048 (from within QJackCtl) the glitching problems are solved. However, Ardour still crashes if I try to increase the latency from Ardour's 'Jack' menu (I can decrease it, but not increase it). Maybe someone else can verify this..? |
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It would be worth investigating how Linux has allocated resources to all your hardware, maybe you have your graphics card and audio card sharing an interrupt (or something similar). |
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Thanks for the suggestion oofus. It turned out that my graphics card is on IRQ11 and my sound card is on IRQ18. Neither of these seems to be shared with anything else AFAICT but it was worth checking. The memory ranges don't overlap either. |
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Do you still have the problem of ardour crashing when increasing the latency? |
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Closing due to lack of feedback. Please re-open if it is still a problem. Thanks. |
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Issue has been closed automatically, by Trigger Close Plugin. Feel free to re-open with additional information if you think the issue is not resolved. |
| Date Modified | Username | Field | Change |
|---|---|---|---|
| 2007-09-18 08:16 | johne53 | New Issue | |
| 2007-09-18 09:54 | johne53 | Note Added: 0004374 | |
| 2007-09-18 11:03 | oofus | Note Added: 0004375 | |
| 2007-09-18 16:06 | johne53 | Note Added: 0004376 | |
| 2009-10-20 22:30 | cth103 | Note Added: 0006804 | |
| 2009-10-20 22:30 | cth103 | Status | new => feedback |
| 2009-11-29 17:25 | cth103 | cost | => 0.00 |
| 2009-11-29 17:25 | cth103 | Note Added: 0007195 | |
| 2009-11-29 17:25 | cth103 | Status | feedback => resolved |
| 2009-11-29 17:25 | cth103 | Resolution | open => fixed |
| 2009-11-29 17:25 | cth103 | Assigned To | => cth103 |
| 2020-04-19 20:12 | system | Note Added: 0021559 | |
| 2020-04-19 20:12 | system | Status | resolved => closed |
