| xchris2168x | can anyone help me diagnose why i'm getting 12 XRUNS a second on my comp? | 05:16 |
|---|---|---|
| holstein | sure | 05:16 |
| holstein | xchris2168x: try running as root temporarily | 05:16 |
| holstein | look at the messages in the JACK window | 05:16 |
| holstein | consider trying other kernels | 05:17 |
| xchris2168x | realtime or not? | 05:17 |
| holstein | xchris2168x: RT usually permits lower latency | 05:17 |
| holstein | you can also just relax the JACK settings | 05:17 |
| holstein | increas the latency | 05:17 |
| holstein | depends on what you are doing if you actually need low latency | 05:17 |
| holstein | i say, if you dont have 12ms, you dont need RT | 05:18 |
| xchris2168x | i mean, at this point i'm just trying to get it to the point where my guitar doesn't sound like a helicopter | 05:18 |
| holstein | anything around 15ms starts to get unacceptable to me | 05:18 |
| holstein | xchris2168x: when? after you record it? | 05:18 |
| holstein | just dont monitor with the computer | 05:18 |
| holstein | monitor live... track at a higher latency... | 05:19 |
| xchris2168x | well i like to use rakarrack as an amp since i'm in college and don't have space/$$ for a real amp right now | 05:19 |
| holstein | also depends on the hardware... you wont get low latency or great quality from an internal card | 05:19 |
| holstein | xchris2168x: i use it... i use it via firewire.. and with several USB devices | 05:20 |
| xchris2168x | yeah, i've got a Line 6 UX2 | 05:20 |
| holstein | you can try a different kernel | 05:20 |
| holstein | you can ask in #opensourcemusicians | 05:20 |
| holstein | https://launchpad.net/~abogani/+archive/ppa | 05:21 |
| holstein | you dont *need* the line6 | 05:21 |
| holstein | you can try the internal card | 05:21 |
| holstein | see if you get better performance | 05:21 |
| xchris2168x | well i need the line6 to hook up to my monitors | 05:22 |
| xchris2168x | and my guitar too | 05:22 |
| holstein | xchris2168x: hook it up | 05:22 |
| holstein | then line out of that into the internal sound card | 05:22 |
| holstein | im just suggesting trying the other interface you already have | 05:22 |
| xchris2168x | yeah, the drivers ARE a little bit iffy... | 05:23 |
| xchris2168x | good suggestion | 05:23 |
| xchris2168x | thank you | 05:23 |
| holstein | yeah, it wont hurt | 05:23 |
| holstein | i hate using internal cards though | 05:23 |
| holstein | how about as root? | 05:23 |
| holstein | still bad? | 05:23 |
| xchris2168x | just as bad yeah.. | 05:23 |
| holstein | try the kernel too though | 05:24 |
| xchris2168x | how long do you think that'll take? | 05:24 |
| holstein | xchris2168x: ? | 05:24 |
| holstein | trying a kernel? | 05:25 |
| xchris2168x | yeah, never done it | 05:25 |
| holstein | depends... not long | 05:25 |
| holstein | it would take me about 4 mintues longer than it takes my machine to reboot | 05:25 |
| xchris2168x | alright, let me give it a try | 05:25 |
| holstein | sudo apt-add-repository ppa:abogani/ppa | 05:26 |
| holstein | sudo apt-get update | 05:26 |
| holstein | sudo apt-get install linux-lowlatency | 05:26 |
| holstein | then, you can decide about editing grub to show you the kernels, or just holding shift down when you reboot | 05:27 |
| holstein | !grub2 | 05:27 |
| ubottu | GRUB2 is the default Ubuntu boot manager since 9.10 (Karmic). Lost GRUB after installing Windows? See https://help.ubuntu.com/community/RestoreGrub - For more information and troubleshooting for GRUB2 please refer to https://help.ubuntu.com/community/Grub2 - See !grub1 for releases before Karmic (9.10) | 05:27 |
| holstein | xchris2168x: i have also been told that USB devices need to have 2 periods/buffer | 05:27 |
| holstein | not 3 | 05:27 |
| xchris2168x | i've tried with 2-6 periods | 05:28 |
| xchris2168x | literally tried it all within the qjackctl settings | 05:28 |
| holstein | xchris2168x: well, you can just set it to 2 for the tests with the lowlatency kernel | 05:28 |
| holstein | leave the RT box checked | 05:28 |
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