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| rghvdberg | @falktx : checking native synths now :-) | 09:00 |
|---|---|---|
| rghvdberg | @falktx Native VST synth too :-( | 09:07 |
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| alexpolevoy | Hey everyone. I have two big problems with KXStudio software, namely JACK and KlangFalter. First, JACK seems to have too much xruns even on low CPU load. Also, playback sometimes freezes for some seconds and then goes on. It happens especially often when I watch something on Youtube. Yesterday this even ruined a rehearsal recording: JACK freezed and then Ardour stopped recording saying my disk subsystem is too slow, but in fact it's not. It was | 12:00 |
| alexpolevoy | recording only two channels in 32/88200. Not a big deal for a modern PC, amirite? | 12:00 |
| alexpolevoy | And the second problem is related to Klangfalter. It consumes too much CPU while generating gazillions of xruns, making editing tasks literally impossible. Sounds cracks as hell, playback can even slow down if I enable Klangfalter. When I switch it off, playback goes way smoother, but if I enable it again, there's a big chance of Ardour crash | 12:02 |
| rghvdberg | are you using lowlatency kernel ? is jack setup ok (realtime ?) | 12:04 |
| alexpolevoy | My system is Kubuntu 15.04 with KXStudio repos, software is updated just this morning. Kernel is 3.19.0-22-lowlatency, my user is in audio group | 12:04 |
| alexpolevoy | rghvdberg: sure it's realtime. I've been using Linux for recording for a couple of years, so I know what am I doing and what a proper JACK setup is | 12:05 |
| rghvdberg | okidoki | 12:05 |
| rghvdberg | I once tried 15.04 but quickly replaced it with 14.04. 15.04 wouldn't play nice with wine + vst plugins | 12:06 |
| rghvdberg | I'm guessing it's a 15.04 thing .. | 12:07 |
| rghvdberg | btw : wouldn't play nice => no sound at all and crashing :-) | 12:07 |
| alexpolevoy | rghvdberg: screw winvsts with wine along. btw, it's working fine on my PC, but JACK just kills me | 12:08 |
| falktx` | 32/88200 requires a very powerful cpu to run all that | 12:09 |
| falktx` | it's probably the resampling | 12:09 |
| rghvdberg | @alexpolevoy I think there's nothing wrong with using best of both worlds :-) | 12:09 |
| alexpolevoy | rghvdberg: I suspect my problem can be related to frequency scaling, but I can't even find out how to manage it. The governors are all unavailable | 12:09 |
| falktx` | try finding some IR files that match that sample rate | 12:09 |
| falktx` | that should avoid the xruns | 12:09 |
| falktx` | bbl | 12:10 |
| alexpolevoy | falktx`: I have Core i5, this could be enough for 192 KHz if talking stereo | 12:10 |
| falktx` | at 32 frames? depends on the plugins | 12:10 |
| rghvdberg | I can only switch between powersave and performance .. | 12:10 |
| alexpolevoy | falktx`: nope, bits | 12:10 |
| alexpolevoy | falktx`: frame size is 256 | 12:10 |
| falktx` | ah | 12:10 |
| falktx` | hmm, then anyway, try finding some pre-resampled IR files | 12:10 |
| falktx` | 88200 is a weird sample rate to use | 12:11 |
| falktx` | bbl | 12:11 |
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| * rghvdberg is trying to build helm :-) | 12:11 | |
| alexpolevoy | falktx`: I tried, but it occurs to me even at 44100 Hz | 12:11 |
| alexpolevoy | btw, now CPU usage is low (around 6%), but crackles prevail over actual recorded sound | 12:13 |
| alexpolevoy | laptop is on AC, so it should run in Perfomance mode by default anyway | 12:14 |
| rghvdberg | oh man ... it would drive me crazy | 12:14 |
| rghvdberg | tried 14.04 ? | 12:14 |
| alexpolevoy | rghvdberg: yes, but it was slow as hell | 12:15 |
| rghvdberg | oh really ? | 12:16 |
| alexpolevoy | rghvdberg: yes, 15.04 is way faster on my system. It boots fast, UI responds much better | 12:17 |
| alexpolevoy | rghvdberg: no need to say it looks much cleaner | 12:17 |
| rghvdberg | what DE ? | 12:18 |
| alexpolevoy | rghvdberg: it's Kubuntu, so what it could be? KDE 5 | 12:18 |
| rghvdberg | oh yeah KDE5 is very sexy ! | 12:19 |
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| rghvdberg | I upgraded from 14.10 for that but then the audio stuff wouldn't work as I liked and I tried several 14.04 distros (kubuntu, ubuntu xubuntu etc) | 12:20 |
| rghvdberg | finally settled for Mint because I had some graphics issues with some vst stuff which would only work correct with mint | 12:21 |
| rghvdberg | turned out I actually liked Unity the most :-) | 12:21 |
| alexpolevoy | rghvdberg: my system was working good until some updates were installed. I guess this problem can be a kernel regression result (I encountered something like that before, it was USB 3.0 issue) | 12:22 |
| alexpolevoy | well, it's not frequency scaling anyway | 12:24 |
| alexpolevoy | I haven't even installed cpufreqd | 12:24 |
| rghvdberg | aaarrgghhh /usr/bin/ld: cannot find -lGL | 12:26 |
| rghvdberg | giving up .. waiting for @falktx to package helm :-) | 12:30 |
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| alexpolevoy | installed some packages related to CPU freq scaling and rebooted the system. Almost no changes: governors are still unavailable in Cadence, Klangfalter still causes the same gazillions of xruns, and it crashed Ardour again when I switched it off | 12:39 |
| alexpolevoy | wow. starting a Pulseaudio bridge freezed Cadence and JACK | 12:42 |
| alexpolevoy | So I have another question: what the hell is going on? | 12:42 |
| alexpolevoy | also, there's this in top output: 78 root -51 0 0 0 0 S 5,6 0,0 0:28.11 irq/16-ehci_hcd | 12:45 |
| alexpolevoy | It's always on the top of top and consumes around 6% | 12:46 |
| falktx | have you tried a different soundcard? | 12:47 |
| alexpolevoy | falktx: yes, I tried switching to an internal one, but result is the same. Also, I have no other USB audio | 12:48 |
| alexpolevoy | falktx: I basically can't check even if I want it | 12:48 |
| alexpolevoy | falktx: also, I'm getting “retire_capture_usb: X callbacks suppressed” in my dmesg output | 12:50 |
| falktx | something is causing all that cpu overhead | 12:50 |
| falktx | a webcam? | 12:50 |
| alexpolevoy | falktx: I know that most probable variant is that it's an IRQ issue | 12:51 |
| alexpolevoy | falktx: I don't know. It's a laptop, I can't just disable it | 12:51 |
| alexpolevoy | falktx: no plug to pull | 12:51 |
| falktx | helm builds | 12:53 |
| alexpolevoy | falktx: previously, I had this issue with Wi-Fi on, but this time switching off Wi-Fi never helps | 12:53 |
| alexpolevoy | falktx: now I have Cadence, Audacious and JACK hanging and not terminating with killall. will try kill -9 | 12:56 |
| alexpolevoy | falktx: hmm... Konsole is also frozen | 12:56 |
| falktx | wait | 12:56 |
| falktx | remember the reisub for saving from freezes | 12:57 |
| falktx | if your system locksup completely, do this: | 12:57 |
| falktx | 1. hold "alt" | 12:57 |
| falktx | 2. press "sysrq" (might need Fn key) | 12:57 |
| falktx | 3. type: | 12:57 |
| falktx | R E I S U B | 12:57 |
| alexpolevoy | falktx: thanks for reminding | 12:58 |
| falktx | hard resets are not nice. this does a forced reset | 12:58 |
| falktx | by software | 12:58 |
| falktx | oh, so you know. good | 12:58 |
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| alexpolevoy | Now, after a restart, I have this in my JACK log: | 13:02 |
| alexpolevoy | Thu Jul 9 15:59:48 2015: ERROR: JackEngine::XRun: client = qsynth was not finished, state = Running | 13:03 |
| alexpolevoy | Thu Jul 9 15:59:48 2015: ERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error | 13:03 |
| alexpolevoy | Thu Jul 9 15:59:48 2015: ERROR: JackEngine::XRun: client = qsynth was not finished, state = Triggered | 13:03 |
| alexpolevoy | Thu Jul 9 15:59:48 2015: ERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error | 13:03 |
| alexpolevoy | Thu Jul 9 15:59:48 2015: ERROR: JackEngine::XRun: client = qsynth was not finished, state = Triggered | 13:03 |
| alexpolevoy | Thu Jul 9 15:59:48 2015: ERROR: JackAudioDriver::ProcessGraphAsyncMaster: Process error | 13:03 |
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| alexpolevoy | another dumb question. Is CPU load of 5% normal if only QSynth and ALSA/Pulseaudio bridges are launched? | 13:29 |
| alexpolevoy | I'd consider it normal if I had an ancient CPU like Pentium III, but this happens on my Intel Core i5 | 13:30 |
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| zhanshan | hi | 14:00 |
| zhanshan | I used cadence to run jack audio output together with an external audio interface and blacklisted my internal sound device | 14:01 |
| zhanshan | now I don't have the ext device for some days and need the internal sound card again | 14:01 |
| zhanshan | removed the int s card from blacklist, restarted, but still didn't work to run jack | 14:01 |
| zhanshan | see log file pls: https://paste.debian.net/hidden/794b362e/ | 14:02 |
| alexpolevoy | zhanshan: it's probably grabbed by Pulseaudio | 14:04 |
| zhanshan | second try: https://paste.debian.net/hidden/4770b0b5/ | 14:04 |
| zhanshan | alexpolevoy I deleted pulseaudio I think | 14:04 |
| zhanshan | at least I get an error if I try to start pavucontrol: 'Fatal Error: Unable to connect to PulseAudio: OK' | 14:05 |
| alexpolevoy | falktx: here's the video of Ardour crashing and glitching with Klangfalter | 14:06 |
| alexpolevoy | falktx: https://youtu.be/-3vI26cTbHc | 14:06 |
| falktx | zhanshan: you need this: | 14:07 |
| falktx | sudo apt-get purge pulseaudio* | 14:07 |
| zhanshan | falktx that was it, thank you so much! | 14:08 |
| falktx | alexpolevoy: did you try some other ir plugin? | 14:09 |
| falktx | alexpolevoy: there's at least convo and ir.lv2 | 14:09 |
| alexpolevoy | falktx: I will now, but lots-of-xruns problem still persists and other plugins can't even come close to Klangfalter in means of user experience. I've never seen a better impulse browser than Klangfalter's, for example | 14:11 |
| alexpolevoy | falktx: I mean, sometimes even plain recording with no processing at all can be ruined by a huge pack of xruns which comes out from literally nowhere | 14:12 |
| alexpolevoy | falktx: btw, I don't have a plugin called “convo” | 14:13 |
| alexpolevoy | falktx: well, “LV2 Convolution Stereo” gave the same result: glitches are almost all I hear | 14:16 |
| falktx | did you try pre-resampled wavs? | 14:16 |
| alexpolevoy | falktx: not this time, but tried previously, when first encountered this problem. Result is bit to bit the same | 14:17 |
| alexpolevoy | falktx: pre-resampling worked (for some seconds at least), but what to do with sound stopping suddenly? | 14:29 |
| alexpolevoy | falktx: xruns still appear, though not that frequently. This could be acceptable if I only needed playback, but I need recording as well | 14:32 |
| alexpolevoy | Now Instrument Tuner by Robin Gareus kills Ardour | 14:47 |
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| alexpolevoy | It always worked perfect | 14:47 |
| alexpolevoy | I'm going crazy. This is unbearable. | 14:47 |
| zhanshan | falktx I still don't hear anything but I could get cadence starting jack | 14:49 |
| zhanshan | mixer? | 14:49 |
| zhanshan | device? | 14:49 |
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| falktx | zhanshan: set driver to alsa and set a device. | 14:50 |
| falktx | then stop and start jack | 14:50 |
| falktx | then if still there's no sound check the mixer | 14:50 |
| zhanshan | I don't have any mixer | 14:52 |
| falktx | alsamixer on a terminal should do it | 14:52 |
| zhanshan | since with the external interface I could only mix analogue thorugh the device's handles | 14:52 |
| zhanshan | alright alsamixer works | 14:53 |
| zhanshan | but still no output | 14:53 |
| zhanshan | where should I set driver to alsa?= | 14:53 |
| zhanshan | in blender I can choose only between jack and openal | 14:54 |
| falktx | set jack | 14:54 |
| zhanshan | yeah I did | 14:54 |
| falktx | if jack is working, that's all it needs | 14:54 |
| zhanshan | it's no | 14:54 |
| falktx | try some media player with jack output option | 14:54 |
| zhanshan | not working, no output | 14:54 |
| falktx | smplayer | 14:54 |
| falktx | or audacious | 14:54 |
| falktx | blender is not a good tool to check if sound is working | 14:54 |
| zhanshan | mpv | 14:54 |
| zhanshan | it's not working | 14:55 |
| falktx | mpv -ao jack | 14:55 |
| zhanshan | falktx https://paste.debian.net/hidden/1a2a8f52/ | 14:57 |
| zhanshan | looks normal but I can't hear anything through head phones | 14:57 |
| falktx | are you sure you selected the proper device in the cadence jack settings? | 14:58 |
| alexpolevoy | zhanshan: you could easily mix up digital out with analogue one, which I guess happened | 14:59 |
| zhanshan | alexpolevoy exactly! | 15:00 |
| zhanshan | but with analogue I can't start jack for some reason | 15:01 |
| zhanshan | https://paste.debian.net/hidden/b8e77020/ | 15:01 |
| zhanshan | ah I put input output to "0" that's why | 15:02 |
| zhanshan | I guess | 15:02 |
| zhanshan | I changed value to '2' and now it could be started | 15:02 |
| zhanshan | and I can hear the sound output | 15:02 |
| zhanshan | thanks guys! I'm in such a hurry today | 15:02 |
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