Linux-audio-user

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20706 discussions

[LAU] zita-njbridge between arm and x86_64?

by Giso Grimm

Hello, using zita-njbridge between two x86_64 systems works great. However, when I try to connect an arm-based system (Banana Pi M1) with a 64 bit system things get less stable (dropouts even with large buffers, error messages, segmentation fault on the 64bit side). I tried the Ubuntu 18.04 provided version (0.1.1) as well as a freshly compiled version (0.4.4). Did anyone successfully try zita-njbridge on arm-based systems? Giso (when the segfault happens it is always in netrx.cc, line 264 in the function write_zeros)

5 years, 10 months

[LAU] Jack-hardware bridging issue

by Iain Mott

Hi list, I am running a telephony daemon on a laptop that gives no audio interface configuration options and I wish to use it with Jack. I'm confused as to whether or not it is using ALSA. If Jack is already running (with pulseaudio-module-jack uninstalled) and configured to use an external USB sound card, starting the daemon results in its audio i/o being connected with the laptop's internal mic and speaker. If Jack is not running, the daemon connects with card 1 listed by "aplay -l", which happens to be the USB card. However, if Jack is running with pulseaudio-module-jack installed and all other non-jack audio apps are routed via the sink to the USB card, the telephony daemon again connects and runs correctly with laptop's internal hardware. I don't think ALSA-Jack loopback scripts will work as I think pulseaudio-module-jack does this job now. Is there a solution with kernel modules? Can someone please put me in the right direction? Thanks! Iain

5 years, 10 months

Re: [LAU] Video card for audio (silent, low latency etc)

by Ben Bell

Thanks to everyone for the tips and suggestions. I thought I'd write a quick update to say it's all sorted now. tl;dr: Ryzen 3 with Vega works just fine on 5.4.x series kernels. I started shopping around for the cards Paul mentioned but couldn't find versions with that chipset but without fans for the Radeon and the nVidia route also turned up blanks. Luckily, one of my machines is a work from home machine and I managed to bag an nVidia Quadro K1200 from the stores at work. Four DP outputs and it seems much more performant. That's the one with more monitors, but not the low latency kernel. The studio machine has a 4K display and couldn't use the nVidia drivers because of the RT kernel patches. Turns out though that the solution was staring me in the face: this is a Ryzen 3 motherboard and apparently has built in graphics. It didn't work when I first built the machine but upgrading to the latest kernel (5.4.x) all now seems good and the performance is the best I've had from ardour, and that's running full screen at 4K. I can scroll! Anyway, seems that the Vega 8 (Ryzen built-in) graphics option is more than adequate so if anyone reads this thread looking for answers, that's another option. bjb On Sun, Mar 29, 2020 at 10:43:44AM +0100, Ben Bell wrote: > Apologies for this being only tangentially on-topic, but has anyone got a > recommendation for a decent video card for driving a 4K monitor under > Linux? > > The audio connection here is that I'm looking for something that is passively > cooled (or at very quiet if not), performs well, and is low-latency friendly > (so probably not proprietary drivers)? With those requirements I don't > really fancy my chances in the "google, buy and hope" approach. > > I've been using cheap nvidias with nouveau for a while but performance of > certain operations (scrolling, dragging/resizing windows) is painfully slow, > particularly since I made the jump to a 4K monitor. > > Has anyone got some success stories? > > bjb > _______________________________________________ > Linux-audio-user mailing list > Linux-audio-user(a)lists.linuxaudio.org > https://lists.linuxaudio.org/listinfo/linux-audio-user

5 years, 10 months

Re: [LAU] Video card for audio (silent, low latency etc)

by david

On 3/28/20 11:43 PM, Ben Bell wrote: > Apologies for this being only tangentially on-topic, but has anyone got a > recommendation for a decent video card for driving a 4K monitor under > Linux? > > The audio connection here is that I'm looking for something that is passively > cooled (or at very quiet if not), performs well, and is low-latency friendly > (so probably not proprietary drivers)? With those requirements I don't > really fancy my chances in the "google, buy and hope" approach. > > I've been using cheap nvidias with nouveau for a while but performance of > certain operations (scrolling, dragging/resizing windows) is painfully slow, > particularly since I made the jump to a 4K monitor. > > Has anyone got some success stories? > > bjb I don't know how helpful this will be to you, but I have a Dell laptop (XPS 15 7590) with 4K HDR OLED display. For video hardware, it includes both Intel HD Graphics 630 hardware and an NVidia GTX 1650 with 4GB of GDDR5. I've never used the NVidia side at all, just the Intel HD that's supported out of the box with Debian. I'm also running an RT kernel and audio setup. I've never experienced the performance issues you mention above. Those issue do sound familiar, though. My wife had a netbook with 2GB of RAM and some onboard Intel hardware with shared system memory for handling the display. It handled the built-in 1280x800 display with no problems. But when connected to an external 1920x1080 monitor, those kinds of issues would happen. I think it was simply because it forced the video hardware to use more shared memory and that affected the rest of the system. My laptop's Intel hardware has driven 4K HDR videos full screen in the background while I'm going other things with it. So you might see if getting something like that would be sufficient. That might mean a motherboard replacement. I don't know if the Intel HD 630 is available as a standalone video card. As far as cooling noises go... I've never heard a fan sound from my laptop. It seems to have some kind of passive cooling system going. But Hawaii is a warmer place than most of the United States. Right now the CPU's at 129F, running at 900MHz. When the CPU really cranks up - all 8 cores/16 threads running all out - it hits over 200F at 4.2GHz. I've never seen it hit its nominal 5GHz. I have it sitting on a laptop cooler that seems to keep it under control. So, anyway, I think an Intel HD 630 would do what you want without any problems. Hope that helps! -- David W. Jones gnome(a)hawaii.rr.com authenticity, honesty, community http://dancingtreefrog.com "My password is the last 8 digits of π."

5 years, 10 months

[LAU] A little bit of hardcore indie

by Hermann Meyer

Hi This is a one shot session, just a little hardcore guitar playing, maybe it suits one of yours. https://soundcloud.com/brummer/guitarix-session2 regards hermann

5 years, 10 months

Re: [LAU] Video card for audio (silent, low latency etc)

by Paul Davis

all open source drivers, the GT one is driving the monitors On Sun, Mar 29, 2020 at 11:25 AM Ben Bell <bjb(a)crazydogs.org> wrote: > Thanks Paul, that's helpful. Any idea which one is driving the monitors > rather than the TV? And do you use the Open Source drivers or are the > proprietary ones low latency friendly these days? > > bjb > > > On Sun, Mar 29, 2020 at 10:00:23AM -0600, Paul Davis wrote: > > bah, i left in the line "they are both radeon based", which is not true. > > > > also, proviso: i am not 100% sure that the one driving the "TV" Is > actually > > achieving 4K resolution, which means that my info may be useless for you. > > > > On Sun, Mar 29, 2020 at 9:59 AM Paul Davis <paul(a)linuxaudiosystems.com> > > wrote: > > > > > > > > > > > On Sun, Mar 29, 2020 at 3:44 AM Ben Bell < > bjb-linux-audio-user(a)deus.net> > > > wrote: > > > > > >> Apologies for this being only tangentially on-topic, but has anyone > got a > > >> recommendation for a decent video card for driving a 4K monitor under > > >> Linux? > > >> > > > > > > I have 2 video cards installed, both selected on the basis of their > > > passive cooling. They are both Radeon based > > > > > > GK208 [GeForce GT 710B] > > > Caicos PRO [Radeon HD 7450] > > > > > > 1 of them run two non-4k monitors, the other runs a 4k "TV" screen. > > > > > > Setting up 3 monitors on Linux is tricky, but the basic set up with > just > > > one of either of them was completely painless and I've been happy with > > > results both in terms of noise (none!) and performance. > > > > > > <https://lists.linuxaudio.org/listinfo/linux-audio-user> > > >> > > > >

5 years, 10 months

Re: [LAU] Video card for audio (silent, low latency etc)

by Paul Davis

On Sun, Mar 29, 2020 at 3:44 AM Ben Bell <bjb-linux-audio-user(a)deus.net> wrote: > Apologies for this being only tangentially on-topic, but has anyone got a > recommendation for a decent video card for driving a 4K monitor under > Linux? > I have 2 video cards installed, both selected on the basis of their passive cooling. They are both Radeon based GK208 [GeForce GT 710B] Caicos PRO [Radeon HD 7450] 1 of them run two non-4k monitors, the other runs a 4k "TV" screen. Setting up 3 monitors on Linux is tricky, but the basic set up with just one of either of them was completely painless and I've been happy with results both in terms of noise (none!) and performance. <https://lists.linuxaudio.org/listinfo/linux-audio-user> >

5 years, 10 months

[LAU] linuxaudio.org maintenance 2020-03-29

by Jeremy Jongepier

Dear all, Today I'd like to perform maintenance on the linuxaudio.org web server around 20:00 CEST. Maintenance comprises moving from GlusterFS storage to disk storage in order to improve performance of the web server. GlusterFS seemed promising but through time we came to realize it's not optimal for our situation. Maintenance will take approx. 3 hours. During that period the sites hosted on the web server won't be reachable as I'd like to shut down all services before doing a final rsync. Thanks for your understanding. Best regards, Jeremy

5 years, 10 months

[LAU] Video card for audio (silent, low latency etc)

by Ben Bell

Apologies for this being only tangentially on-topic, but has anyone got a recommendation for a decent video card for driving a 4K monitor under Linux? The audio connection here is that I'm looking for something that is passively cooled (or at very quiet if not), performs well, and is low-latency friendly (so probably not proprietary drivers)? With those requirements I don't really fancy my chances in the "google, buy and hope" approach. I've been using cheap nvidias with nouveau for a while but performance of certain operations (scrolling, dragging/resizing windows) is painfully slow, particularly since I made the jump to a 4K monitor. Has anyone got some success stories? bjb

5 years, 10 months

[LAU] [ANN] Qtractor 0.9.13 - A QStuff* Spring'20 Release batch #3

by Rui Nuno Capela

Greetings, just one third time! Qtractor 0.9.13 (spring'20) is released! Change-log: - All meters background color are now customize-able (cf. View/Options.../Display/Meters, color level "Back"). - Automatic mixer grid layout (multi-row) is now in effect permanently--being an option no more. - Always show plugins and meters on track list/left pane as permanent standard now. - LV2 UI Request-value feature/interface support has been implemented. - Audio output monitoring meters are now shown/hidden auto-magically on MIDI tracks and/or buses--no need for some user preference option anymore (ie. View/Options.../Plugins/Instruments/Show audio output monitoring meters, is now gone). - Default track height has been slightly increased. - Track / Duplicate Track... now also takes a MIDI track's audio meters setting into account. - VST3 plug-in support introduced. (EXPERIMENTAL) - Fixed first bar/measure position drawing on the time-scale/grid across time-signature changes on the MIDI clip editor (aka. piano-roll) (hopefully fixing issue #245). - Plugins and meters on track list/left pane, are now being set on as default--maybe going stapled in some near future ;) - Make man page compression reproducible (after request by Jelle van der Waa, while on the Vee-Ones, thanks). - Avoid resetting top or left position when zooming with mouse pointer is in main tracks or MIDI clip editor (piano-roll) views. - Make libaubio a build dependency on Debian/Ubuntu; also fix cross-build check to sizeof(float). - Bumped copyright headers into the New Year (2020). Description: Qtractor [1] is an audio/MIDI multi-track sequencer application written in C++ with the Qt framework [2]. Target platform is Linux, where the Jack Audio Connection Kit (JACK [3]) for audio and the Advanced Linux Sound Architecture (ALSA [4]) for MIDI are the main infrastructures to evolve as a fairly-featured Linux desktop audio workstation GUI, specially dedicated to the personal home-studio. Website: http://qtractor.org https://qtractor.sourceforge.io http://qtractor.sourceforge.net Project page: https://sourceforge.net/projects/qtractor Downloads: https://sourceforge.net/projects/qtractor/files - source tarball: https://download.sf.net/qtractor/qtractor-0.9.13.tar.gz - source package (openSUSE Tubleweed): https://download.sf.net/qtractor/qtractor-0.9.13-54.rncbc.suse.src.rpm - binary package (openSUSE Tubleweed): https://download.sf.net/qtractor/qtractor-0.9.13-54.rncbc.suse.x86_64.rpm - AppImage [7] package: https://download.sf.net/qtractor/qtractor-0.9.13-54.x86_64.AppImage Git repos: https://git.code.sf.net/p/qtractor/code https://github.com/rncbc/qtractor.git https://gitlab.com/rncbc/qtractor.git https://bitbucket.org/rncbc/qtractor.git Wiki (help wanted!): https://sourceforge.net/p/qtractor/wiki/ - static rendering: http://qtractor.org/doc http://qtractor.sourceforge.net/doc https://qtractor.sourceforge.io/doc - user manual & how-to's: https://download.sf.net/qtractor/qtractor-manual-and-howtos.epub https://download.sf.net/qtractor/qtractor-manual-and-howtos.pdf License: Qtractor [1] is free, open-source Linux Audio [5] software, distributed under the terms of the GNU General Public License (GPL [6]) version 2 or later. References: [1] Qtractor - An audio/MIDI multi-track sequencer http://qtractor.org https://qtractor.sourceforge.io http://qtractor.sourceforge.net [2] Qt framework, C++ class library and tools for cross-platform application and UI development https://qt.io/ [3] JACK Audio Connection Kit https://jackaudio.org [4] ALSA, Advanced Linux Sound Architecture https://www.alsa-project.org/ [5] Linux Audio consortium of libre software for audio-related work https://linuxaudio.org [6] GPL - GNU General Public License https://www.gnu.org/copyleft/gpl.html [7] AppImage, Linux apps that run anywhere https://appimage.org/ See also: https://www.rncbc.org/drupal/node/2078 Enjoy && Stay safe! -- rncbc aka Rui Nuno Capela

5 years, 10 months

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Linux-audio-user