music January 2015

music@lists.fedoraproject.org

8 participants
15 discussions

Fedora 21 Upgrade Bug re nilfs-utils
by Janina Sajka 07 Jan '15

07 Jan '15

Hi, I upgraded one of my machines from Fedora 20 to 21 the other day and ran into the following error: Transaction check error: file /usr/bin/lscp from install of nilfs-utils-2.2.0-3.fc21.x86_64 conflicts with file from package linuxsampler-1.0.0-6.svn2680.1.fc21.ccrma.x86_64 file /usr/share/man/man1/lscp.1.gz from install of nilfs-utils-2.2.0-3.fc21.x86_64 conflicts with file from package linuxsampler-1.0.0-6.svn2680.1.fc21.ccrma.x86_64 I resolved the conflict by removing nilfs-utils, but there's clearly a bug here somewhere. I'm unclear where to report it, though. PS: I hadn't heard of nilfs before, but it does sound useful. Would be nice to have it functional! tia Janina -- Janina Sajka, Phone: +1.443.300.2200 sip:janina@asterisk.rednote.net Email: janina(a)rednote.net Linux Foundation Fellow Executive Chair, Accessibility Workgroup: http://a11y.org The World Wide Web Consortium (W3C), Web Accessibility Initiative (WAI) Chair, Protocols & Formats http://www.w3.org/wai/pf Indie UI http://www.w3.org/WAI/IndieUI/

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RT-PRIO for libffado???
by Simon Lewis 03 Jan '15

03 Jan '15

Having only used USB audio devices up to now I am gaining my first experiences with firewire devices. The command line tests "ffado-test Discover" and "ffado-test ListDevices" show that the Focusrite Saffire PRO 24 is correctly detected on booting my laptop, the firewire drivers are correctly loaded and that there are no warnings or errors. ffado-mixer works perfectly, indeed complements must go to the ffado team for the last 2 releases of ffado and libfado including the dice support. However, on my fedora f21 jam installation libffado cannot creat any realtime threads (even though jack with usb audiuo devices works perfectly with RT pre-emption). Please can anyone supply the necessary tweak to the system configuration? The output from jackd is: 13:25:12.373 JACK wurde mit PID = 3182 gestartet. no message buffer overruns no message buffer overruns no message buffer overruns jackdmp 1.9.10 Copyright 2001-2005 Paul Davis and others. Copyright 2004-2014 Grame. jackdmp comes with ABSOLUTELY NO WARRANTY This is free software, and you are welcome to redistribute it under certain conditions; see the file COPYING for details JACK server starting in realtime mode with priority 20 self-connect-mode is "Don't restrict self connect requests" 1420287912685164: (ffado.cpp)[ 92] ffado_streaming_init: libffado 2.2.1-Unversioned directory built Aug 17 2014 10:15:13 1420287912687582: [31mError (PosixThread.cpp)[ 161] Start: Cannot create realtime thread (1: Operation not permitted) [0m1420287912687597: [31mError (PosixThread.cpp)[ 162] Start: priority: 25 [0mfirewire ERR: FFADO: Error creating virtual device Cannot attach audio driver JackServer::Open failed with -1 no message buffer overruns Failed to open server 13:25:12.718 JACK wurde angehalten Many thanks in advance, Simon -- __________________________________ Simon Lewis Groß-Gerauer-Straße 84 55130 Mainz Germany Tel.: +49 6131 5864787 E-Mail: simon.lewis(a)slnet-online.de

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threadirqs kernel parameter with standard kernels...
by Simon Lewis 02 Jan '15

02 Jan '15

Hi all Cab any one confirm this? I noticed that standard kernels found in the fedora repos were built with CONFIG_IRQ_FORCED_THREADING=y thus the kernel parameter threadirqs can be used on boot. To do this I edited /etc/default/grub (with root privileges) such that: GRUB_CMDLINE_LINUX="rhgb quiet threadirqs" and run the following (root) command line grub2-mkconfig --output=/boot/grub2/grub.cfg If this is correct I guess this could be something for the next JAM spin... Using Fernando's tip I get the following listings for version 3.17.4-301.fc21 of kernel.x86_64 bash-4.3$ rtirq status PID CLS RTPRIO NI PRI %CPU STAT COMMAND 487 FF 70 - 110 0.0 S irq/31-snd_hda_ 30 FF 50 - 90 0.0 S irq/9-acpi 51 FF 50 - 90 0.0 S irq/14-ata_piix 52 FF 50 - 90 0.0 S irq/15-ata_piix 58 FF 50 - 90 0.6 S irq/17-ata_piix 65 FF 50 - 90 0.0 S irq/22-ehci_hcd 66 FF 50 - 90 0.1 S irq/20-ehci_hcd 67 FF 50 - 90 0.0 S irq/20-uhci_hcd 68 FF 50 - 90 0.5 S irq/21-uhci_hcd 69 FF 50 - 90 0.1 S irq/20-uhci_hcd 71 FF 50 - 90 0.6 S irq/21-uhci_hcd 72 FF 50 - 90 0.0 S irq/22-uhci_hcd 73 FF 50 - 90 0.0 S irq/12-i8042 74 FF 50 - 90 0.0 S irq/1-i8042 76 FF 50 - 90 0.0 S irq/8-rtc0 252 FF 50 - 90 0.0 S irq/19-yenta 266 FF 50 - 90 0.0 S irq/19-firewire 268 FF 50 - 90 0.3 S irq/29-nouveau 469 FF 50 - 90 0.4 S irq/30-iwl3945 936 FF 50 - 90 0.0 S irq/32-enp9s0 3 TS - 0 19 0.3 S ksoftirqd/0 17 TS - 0 19 0.2 S ksoftirqd/1 bash-4.3$ ps axuw|grep irq root 3 0.3 0.0 0 0 ? S 23:43 0:00 [ksoftirqd/0] root 17 0.2 0.0 0 0 ? S 23:43 0:00 [ksoftirqd/1] root 30 0.0 0.0 0 0 ? S 23:43 0:00 [irq/9-acpi] root 51 0.0 0.0 0 0 ? S 23:43 0:00 [irq/14-ata_piix] root 52 0.0 0.0 0 0 ? S 23:43 0:00 [irq/15-ata_piix] root 58 0.5 0.0 0 0 ? S 23:43 0:00 [irq/17-ata_piix] root 65 0.0 0.0 0 0 ? S 23:43 0:00 [irq/22-ehci_hcd] root 66 0.0 0.0 0 0 ? S 23:43 0:00 [irq/20-ehci_hcd] root 67 0.0 0.0 0 0 ? S 23:43 0:00 [irq/20-uhci_hcd] root 68 0.9 0.0 0 0 ? S 23:43 0:01 [irq/21-uhci_hcd] root 69 0.1 0.0 0 0 ? S 23:43 0:00 [irq/20-uhci_hcd] root 71 1.1 0.0 0 0 ? S 23:43 0:01 [irq/21-uhci_hcd] root 72 0.0 0.0 0 0 ? S 23:43 0:00 [irq/22-uhci_hcd] root 73 0.0 0.0 0 0 ? S 23:43 0:00 [irq/12-i8042] root 74 0.0 0.0 0 0 ? S 23:43 0:00 [irq/1-i8042] root 76 0.0 0.0 0 0 ? S 23:43 0:00 [irq/8-rtc0] root 252 0.0 0.0 0 0 ? S 23:43 0:00 [irq/19-yenta] root 266 0.0 0.0 0 0 ? S 23:43 0:00 [irq/19-firewire] root 268 0.3 0.0 0 0 ? S 23:43 0:00 [irq/29-nouveau] root 469 0.4 0.0 0 0 ? S 23:44 0:00 [irq/30-iwl3945] root 487 0.0 0.0 0 0 ? S 23:44 0:00 [irq/31-snd_hda_] root 701 0.0 0.0 17056 2524 ? Ss 23:44 0:00 /usr/sbin/irqbalance --foreground root 936 0.0 0.0 0 0 ? S 23:44 0:00 [irq/32-enp9s0] simon 1672 0.0 0.0 113024 2228 pts/1 S+ 23:46 0:00 grep irq Happy new year, Simon -- __________________________________ Simon Lewis Groß-Gerauer-Straße 84 55130 Mainz Germany Tel.: +49 6131 5864787 E-Mail:simon.lewis@slnet-online.de

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Need soundcard advice
by William W. Austin 02 Jan '15

02 Jan '15

My wife composes, and for playback she has used an Audigy2 PCI card in her desktop machine for years. That computer is beyond it's last legs now, and her new one has only PCIE slots. (Yes she uses Linux for her composing and playback.) The problem is that she uses the Midi feature of that card and has sound fonts that she loads (about 126 MB in size) into it. She has given up trying to find one and has asked me to help... but so far I've struck out. Are there ANY PCIE sound which is roughly the equivalent of the Audigy 2 cards? I won't say "money is no object", but I'm approaching the point where cost is less important than finding such a card if on exists. Any pointers on this issue will be greatly appreciated. Thanks in advance - Bill -- william w. austin airedad(a)att.net "life is just another phase i'm going through. this time, anyway ..."

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Re: [Fedora-music-list] Low Latency vs. Real Time Kernel - actual latencies ?
by Brian Monroe 01 Jan '15

01 Jan '15

I agree that we need lag to be less than 5ms with no xruns for serious musicians. It makes a difference. I was chatting in #opensourcemusicians about the rt patch issue and someone threw this out there: http://www.funtoo.org/Kernel/configs/realtime I'm smart enough to get what they're doing, but not smart enough to know if this is what we're already doing in Fedora or how it'll affect other security concerns. Also the settings listed for /etc/security/limits.conf is setting you up for a bad time. They said they could get less than 1ms with no xruns (except at application startup) which sounds promising. Certainly if we're shooting for less than 5 ms instead of less than 1ms.

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music January 2015