| larsselavy | Hi, I have a problem with cinelerra, i don't know how to solve it. I've just change my computer, i've installed ubuntu studio with realtime core (i don't know if it's linked to my problem) and now i have a sound latency on cinelerra of almost 1 second... Any idea of the problem? | 14:13 |
|---|---|---|
| ScottL | larsselavy, do you still have the -generic kernel installed? you can try booting into it and seeing if the latency changes | 14:15 |
| larsselavy | ScottL, I don't know if it's installed, how can I know? My computer is a new one, nothing was installed before i install ubuntu studio | 14:18 |
| ScottL | larsselavy, when you boot the computer, does it show a menu or take you straight to logging in? | 14:19 |
| larsselavy | straight to log | 14:21 |
| larsselavy | ScottL, | 14:21 |
| larsselavy | so i suppose i don't have a generic kernel | 14:21 |
| ScottL | are you familiar with the command line (also known as the terminal)? | 14:21 |
| larsselavy | yeah depend on what | 14:21 |
| ScottL | larsselavy, just because it goes straight to log in doesn't mean you don't have other kernels, that might just be the way grub is set | 14:22 |
| larsselavy | i mean depend on which command lines | 14:22 |
| larsselavy | ok | 14:22 |
| larsselavy | but i don't know how to reset grub... | 14:24 |
| larsselavy | ScottL, | 14:24 |
| ScottL | probably the most straight forward is to search in synaptic, are you familiar with synaptic larsselavy ? | 14:25 |
| ScottL | i would search for 'linux-image-2' | 14:25 |
| larsselavy | yeah | 14:25 |
| larsselavy | ScottL, | 14:26 |
| ScottL | this should show which kernels are installed already | 14:26 |
| ScottL | larsselavy, which version of ubuntu studio did you install (e.g. lucid, maverick)? | 14:26 |
| larsselavy | lucid | 14:26 |
| ScottL | okay, so lucid comes with a -generic kernel by default | 14:26 |
| ScottL | i would presume then that you added the -realtime kernel manually | 14:27 |
| ScottL | so unless you removed the -generic kernel, you should still have it | 14:27 |
| ScottL | and even if you did add it you can always add the -generic again via synaptic | 14:27 |
| holstein | hey guys :) | 14:28 |
| larsselavy | i didn't remove it so i suppose i still have it | 14:28 |
| holstein | larsselavy: what is the output of | 14:28 |
| holstein | uname -a | 14:28 |
| holstein | in a terminal | 14:28 |
| larsselavy | i didn't exactly add the realtime kernel manually, it asked it at installation | 14:28 |
| holstein | larsselavy: you can post that here | 14:28 |
| holstein | its just a line | 14:28 |
| larsselavy | Linux Lillith 2.6.32-26-generic #48-Ubuntu SMP Wed Nov 24 09:00:03 UTC 2010 i686 GNU/Linux | 14:29 |
| larsselavy | holstein, | 14:29 |
| ScottL | ah, larsselavy tha was asking if you wanted -realtime privelages, not install the kernel | 14:29 |
| ScottL | this is to give better performance | 14:29 |
| larsselavy | ScottL, ah so i don't have the realtime kernel? | 14:29 |
| larsselavy | ok | 14:29 |
| ScottL | no real-time kernel, it even shows you that with your uname -a | 14:30 |
| ScottL | when you use cinelerra are you also using JACK as the sound server? | 14:30 |
| * ScottL has never used cinelerra | 14:30 | |
| ScottL | hi holstein :) | 14:31 |
| larsselavy | no alsa | 14:31 |
| ScottL | hmmm, not sure why there should be latency then | 14:31 |
| larsselavy | mmm | 14:31 |
| larsselavy | shit | 14:31 |
| ScottL | although you probably are using Pulse Audio on top of alsa (it's installed by default) | 14:31 |
| holstein | larsselavy: how is hte sound otherwise | 14:31 |
| holstein | ? | 14:31 |
| holstein | the* | 14:31 |
| ScottL | larsselavy, you might also check either cinelerra forums or IRC channels | 14:32 |
| larsselavy | the sound is ok, just as it should have been holstein | 14:32 |
| holstein | careful, this channel is logged... canonical will make you put a dollar in the 'curse-word' jar ;) | 14:32 |
| larsselavy | holstein, ? | 14:33 |
| holstein | larsselavy: can cinelerra use JACK ? | 14:33 |
| larsselavy | holstein, no | 14:34 |
| holstein | interesting | 14:34 |
| holstein | i cant imagine expecting low-latency audio without using JACK in linux | 14:34 |
| holstein | as a user or a dev | 14:34 |
| larsselavy | holstein, maybe it's a cinelerra problem something in the settings, i don't know | 14:35 |
| holstein | larsselavy: your up to date right? | 14:35 |
| holstein | with system updates? | 14:35 |
| larsselavy | yes | 14:36 |
| holstein | internal sound card? | 14:36 |
| larsselavy | i have also an external but i don't use it with cinelerra | 14:36 |
| holstein | what is the device? | 14:36 |
| holstein | when you run | 14:36 |
| holstein | lspci | 14:36 |
| holstein | you can paste that one line here | 14:37 |
| holstein | the one line about the sound card | 14:37 |
| larsselavy | (it's an other problem i have i'll ask another time : jack doesn't recognize my external sound card) | 14:37 |
| holstein | OR use http://paste.ubuntu.com/ | 14:37 |
| larsselavy | http://paste.ubuntu.com/542279/ | 14:38 |
| larsselavy | holstein, | 14:39 |
| holstein | im not seeing anything obvious searching around on launchpad | 14:40 |
| holstein | anyways.. let me make a few suggestions | 14:40 |
| larsselavy | ok | 14:40 |
| holstein | and you can plug through them and come back | 14:40 |
| larsselavy | what? (english is not my mother language i didn't get it) | 14:41 |
| holstein | i think i would assume this is a cinellera issue | 14:41 |
| holstein | maybe see if there is a git version | 14:41 |
| holstein | or some latest version PPA | 14:42 |
| holstein | an avenue you feel comfortable with that lets you get the most recent verion of cinellera | 14:42 |
| larsselavy | yeah probably i think i had the same problem when i installed cinelerra the first time, some years ago on my old computer but i can't remeber what i did to solve it | 14:42 |
| holstein | maybe they have a mailing list if the IRC channel is dead | 14:43 |
| holstein | after exausting those avenues | 14:43 |
| larsselavy | they have a mailing list | 14:43 |
| holstein | you can try updating alsa | 14:43 |
| holstein | http://ubuntuforums.org/showthread.php?p=6589810#post6589810 | 14:43 |
| holstein | but my money is on cinellera | 14:43 |
| holstein | larsselavy: about the external device and JACK | 14:44 |
| holstein | you can search here http://www.alsa-project.org/main/index.php/Matrix:Main | 14:44 |
| holstein | see if you find the device | 14:44 |
| holstein | if its there, you should see info about how well alsa supports it | 14:44 |
| holstein | and what hoops you need to jump through | 14:45 |
| holstein | one easy-ish way to isolate the USB device is by disabling the internal sound card in the bios | 14:45 |
| holstein | at least temporarily | 14:45 |
| holstein | there are a couple commands i would run in the terminal right after plugging the device in | 14:46 |
| holstein | lsusb | 14:46 |
| holstein | that should list all the USB devices that the machine can see | 14:46 |
| holstein | and | 14:47 |
| holstein | aplay -l | 14:47 |
| holstein | and | 14:47 |
| holstein | arecord -l | 14:47 |
| ScottL | larsselavy, do you have to use cinelerra? you might also try openshot or blender for video editing | 14:47 |
| holstein | ^^ those list what deivces can play and record audio, and how many inputs you have | 14:47 |
| holstein | ScottL: how is openshot? | 14:48 |
| holstein | what did you use to do those vids you did? | 14:48 |
| ScottL | holstein, i used blender actually :) | 14:50 |
| ScottL | but openshot is pretty stable from what i read, full of features, and pretty simple | 14:51 |
| holstein | im going to try http://jaycut.com/ | 14:51 |
| ScottL | isn't that the online video editing service? | 14:52 |
| holstein | yeah | 14:52 |
| holstein | i made an account | 14:52 |
| ScottL | well, it should be OS agnostic and stable :) | 14:53 |
| ScottL | http://ardour.org/taxonomy/term/23/0 | 15:28 |
| ScottL | paul has been making lots of posts showcasing new features and changes in ardour 3.0 | 15:28 |
| ScottL | he's probably made close to thirty in the last three or four days | 15:28 |
| holstein | ScottL: thats a good sign :) | 17:35 |
| gnusar | has anyone of you suceeded to install ustudio as a virtual machine via virtual box? i am struggling with getting the audio line in to work.. is probably more a virtual box related issue but i thought it does not hurt to ask here | 17:36 |
| holstein | yeah, this is a good place to ask gnusar | 17:36 |
| holstein | i dont think your going to get the performance you need in VM | 17:37 |
| holstein | gnusar: what is the goal? | 17:37 |
| holstein | are you running windows or OSX host? | 17:37 |
| gnusar | holstein: i am running win7 and want to record some guitar tunes | 17:37 |
| holstein | i think you'd do betting with a wubi install | 17:37 |
| holstein | and that is just as removable | 17:38 |
| holstein | in theory | 17:38 |
| holstein | i had good luck with a wubi install in XP | 17:38 |
| holstein | when i was transitioning the studio to linux | 17:38 |
| gnusar | sounds good.. so you were also interested in sound recording and processing? | 17:39 |
| holstein | yup | 17:39 |
| gnusar | thank you holstein | 17:39 |
| * holstein doesnt do a lot of MIDI | 17:40 | |
| holstein | or video | 17:40 |
| holstein | gnusar: check out #opensourcemusicians | 17:40 |
| gnusar | holstein: live shows! sounds interesting | 17:42 |
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