Linux-audio-user July 2018

linux-audio-user@lists.linuxaudio.org

43 participants
47 discussions

[LAU] free/libre/open online music distribution

by Wayne DePrince Jr.

ahoy all, i have been doing some research into free/libre software and/or services for music distribution. my preferences are a *customizable* static HTML+CSS+JavaScript site (e.g. like the current crop of static site generators https://staticsitegenerators.net ) that i can host myself which allows streaming and free/libre downloads of releases/tracks. basically i am looking for a simple static site generator that is album/track/audio aware, though i am open to any solutions available. my current list is small and all save one require a full-blown CMS+DB install: * Pushtape http://pushtape.com - currently only Drupal based * CASH Music platform http://cashmusic.org - PHP+DB requirement for self hosting - also available as a free/beer service hosted by CASH Music with embeddable widgets - currently no streaming support * WordPress - there are some freemium plugins for hosting a music store, etc. but again i am trying to avoid the setup+maintenance of a full CMS * indieTorrent https://indietorrent.org - online only service - very interesting/cool manifesto https://indietorrent.org/docs/manifesto/ - not lots of activity but still kicking https://indietorrent.org/4rum/viewtopic.php?f=1&p=39#p39 - not specifically for self hosting but as it is open source it could be done others (ReverbNation, Jamendo, Magnatune, Bandcamp, Bandpage, thesixtyone, etc) are all either non-libre, non-self hosting, etc. if anyone has any items to add to this list, experience with a service, homemade solutions, etc. i would appreciate them sharing it. i figure since we all go through various amounts of trouble to follow our principles/passions/whatever by using free/libre tools when making music, sharing it would be no different. thanks, w

7 years, 4 months

[LAU] All videos online, website going to read-only mode

by Linux Audio Conference

Dear Linux Audio community, we're sending this mail to let you know about the availability of the remaining videos from LAC2018. You can find them on media.ccc.de [1] and on the dedicated event pages linked to in the schedule [2]. We hope you had a great time at the conference and if you couldn't be there physically, this is now the time to have a look at much of what has happened in Berlin this year. In other news, the website [3] is going to read-only mode shortly. See you at future LACs! [1] https://media.ccc.de/b/conferences/lac/lac18 [2] https://lac.linuxaudio.org/2018/pages/schedule/ [3] https://lac.linuxaudio.org/2018/ -- Linux Audio Conference team

7 years, 5 months

[LAU] Is there a LAU music directory?

by hollundertee＠gmx.net

Hi, is there some way to find music made on Linux other than to go through this mailinglist? I found https://wiki.linuxaudio.org/apps/categories/music_made_with_linux but that seems to list only a fraction of what must be out there. Regards, Philipp

7 years, 5 months

[LAU] M-Audio Fast Track Pro: unreliable, distorted recording

by Lewis Pike

I'm the (un?)lucky owner of an M-Audio Fast Track Pro USB audio interface and I'm having some serious problems getting this device to record audio reliably under Linux. I've been using arecord and occasionally Audacity for all of my testing. My problem is this: Recording a take works about 80% of the time. In the remaining ~20% of cases, the captured audio is extremely loud with severe digital distortion. Once this problem shows up, it persists for any subsequent takes. The only way I've found to make the problem go away, at least temporarily, is to power-cycle the Fast Track Pro. I considered the possibility that this particular device might be defective, but it seems to work wonderfully under Windows. I'm calling out to other Fast Track Pro users in the hope that someone out there has encountered the same problem and better still, found a solution. Any suggestions at all would be greatly appreciated! .lewis

7 years, 6 months

[LAU] Change of day for monthly Berlin meetings?

by Daniel Swärd

Hi all. During the LAC there were some discussion on that we should change the day for the monthly Berlin meeting and that we should change it to the first Tuesday of the month. What do you say? The first Tuesday of the month? If so, I'll ask to have the c-base calendar updated. Cheers /Daniel

7 years, 6 months

[LAU] Streaming setup with OBS and JACK

by hollundertee＠gmx.net

Hi, I have to apologise, this mail is going to be long, so I'll try to structure it a bit. Overview I have been live streaming on twitch for the past year, mostly games and purely as a hobby. The possibilities of PA and OBS for routing and audio processing are rather limited, I'd like to try and improve my setup by adding JACK to the mix. Current Setup 2-3 Audio interfaces. My main one is the UA-25 usb interface. There is another in the GPU connected via HDMI to the monitor and a usually deactivated one on the motherboard. I am mostly streaming gameplay, most if not all games rely on ALSA or PulseAudio, so I have PulseAudio running. In OBS I simply capture the UA-25 "desktop output". I also have it capture the UA-25 inputs, of which only one is connected to the microphone. There is an option within OBS to have that signal on both channels. I use the compressor plugin built into OBS with pretty much "default" voice/voiceover settings. Afterwards "desktop" and voice get mixed to a stereo signal and streamed. I monitor the "desktop" signal as it is immediate and doesn't contain my voice. To check whether the mix is fine I need to check either the outgoing or the incoming signal (which is delayed by a few seconds). Currently I route the incoming signal via PA to the GPU audio interface. To actually hear it I need to physically switch the headphones for the in-ears connected to the monitor. I do not use a cam and intend to keep it that way. Current Problems A) Monitoring is cumbersome because I need to switch between the proper headphones and the in-ears. While the in-ears aren't bad by themselves, the sound through GPU -> HDMI -> Monitor is pretty bad. It is barely enough to judge whether or not the levels are totally off. I'd much prefer to be able to monitor using my proper headphones at the push of a button. B) OBS comes with rather few audio plugins by default (https://github.com/obsproject/obs-studio/wiki/Filters-Guide) and I'm not convinced they are more than serviceable. The compressor is hard to set up, I wish it had at least some visual indication for the threshold. Possible solution While there are a few effects rack for Pulse Audio, like https://github.com/wwmm/pulseeffects, and Pulse Audio can do routing I don't understand PA's routing and rather use JACK. Since I haven't followed Linux Audio land quite as closely the last few years I have a few questions. 1) Can someone tell me whether the OBS jack plugin is good enough or does something stupid? The code can be found here: https://github.com/obsproject/obs-studio/tree/master/plugins/linux-jack 2) Is there a reliable and if possible hassle free way to get ALSA and PA into JACK? ALSA loopback would probably not work for programs using PA directly. 3) I think switching around monitoring should be doable with a simple script calling jack_connect, provided the ports are predictably named. Even I should be able to do that. Is there another solution? 4) Even though it's a small setup I'd need some sort of session management to bring up at least the jack side of things. 5) Finally what do you recommend as plugin host and compressor plugin for voice? Thank you in advance for your help. I can at least document the setup somewhere, for the next one who tries to do something like that. I could do that on my blog (that no one ever reads) or if you know some good wiki or something I can put it there. Best Regards, Philipp

7 years, 6 months

[LAU] LADSPA/LV2 reverb particularly suited to 5+ seconds tail

by Jeanette C.

Hey hey, I'm looking for a reverb plugin (algorithmic rather than convolution) that is particularly suited to long tails (5+ seconds). Think of your average trance reverb that will drown pads in lush reverberation. I usually like G2verb, but with long reverb times it can easily sound grainy, like you can hear the delays. Any suggestions are welcome. Best wishes and thanks, Jeanette -------- * Website: http://juliencoder.de - for summer is a state of sound * SoundCloud: https://soundcloud.com/jeanette_c * Youtube: https://www.youtube.com/channel/UCMS4rfGrTwz8W7jhC1Jnv7g * GitHub: https://github.com/jeanette-c * Twitter: https://twitter.com/jeanette_c_s I'm not that innocent... <3 (Britney Spears)

7 years, 6 months

[LAU] A Resonance Of Clouds [music from the Rack]

by Dave Phillips

Greetings, https://www.youtube.com/watch?v=Q1H-i4j4QAs An ambience, not a drone. Musique ameublement with harmonic variety, from a performance of a self-generating patch made in VCV Rack with a variety of its modules. Recorded with ecasound and edited with mhwaveedit. Enjoy, and comments are welcome. Best, dp

7 years, 6 months

[LAU] Qtractor MIDI queue timer and TSC

by Ralf Mardorf

Hi, by View > Options... > MIDI tab I can chose between 'default', 'system timer' (for my current installed rt kernels 300Hz), 'HR timer' and diverse 'PCM' timers. My old computer doesn't have 'TSC', so Qtractor's queue timer still is set to use 'HR timer', to reduce MIDI jitter. If I want to chose 'TSC', when running Qtractor on my new machine, should there be an entry 'TSC' or since it's the current clocksource, would selecting 'default' be the option to use 'TSC'? IOW what is 'default' for and why is there no option to select 'TSC'? [rocketmouse@archlinux ~]$ cat /sys/devices/system/clocksource/*/available_clocksource tsc hpet acpi_pm [rocketmouse@archlinux ~]$ cat /sys/devices/system/clocksource/clocksource0/current_clocksource tsc [rocketmouse@archlinux ~]$ qtractor -v qt5ct: using qt5ct plugin Qt: 5.11.1 Qtractor: 0.9.1 Regards, Ralf PS: I'm sending this to LAU instead of the Qtractor mailimng list, since I susepct this could be from interest for several users, who are not necessarily subscribed to the Qtractor mailing list and Rui usually replies to requests related to his software here, too.

7 years, 6 months

[LAU] reducing xruns (System configuration)

by Max

Hi list, I just re-installed my system partition with an kubuntu+kxstudio repositories and I get some xruns in Jack2. I am trying to figure out how to optimize my system configuration. realtimeconfigquickscan gives me this: == GUI-enabled checks == Checking if you are root... no - good Checking filesystem 'noatime' parameter... 4.17.7 kernel - good (relatime is default since 2.6.30) Checking CPU Governors... CPU 0: 'performance' CPU 1: 'performance' CPU 2: 'performance' CPU 3: 'performance' CPU 4: 'performance' CPU 5: 'performance' CPU 6: 'performance' CPU 7: 'performance' - good Checking swappiness... 10 - good Checking for resource-intensive background processes... none found - good Checking checking sysctl inotify max_user_watches... >= 524288 - good Checking access to the high precision event timer... readable - good Checking access to the real-time clock... readable - good Checking whether you're in the 'audio' group... yes - good Checking for multiple 'audio' groups... no - good Checking the ability to prioritize processes with chrt... yes - good Checking kernel support for high resolution timers... found - good Kernel with Real-Time Preemption... not found - not good Kernel without real-time capabilities found For more information, see http://wiki.linuxaudio.org/wiki/system_configuration#installing_a_real-time… Checking if kernel system timer is high-resolution... found - good Checking kernel support for tickless timer... found - good == Other checks == Checking filesystem types... ok. not found. ** Warning: no tmpfs partition mounted on /tmp For more information, see: - http://wiki.linuxaudio.org/wiki/system_configuration#tmpfs - http://lowlatency.linuxaudio.org ** Set $SOUND_CARD_IRQ to the IRQ of your soundcard to enable more checks. Find your sound card's IRQ by looking at '/proc/interrupts' and lspci. ------------------ ok, so I'm looking at lspci: 00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor DRAM Controller (rev 06) Subsystem: Lenovo Xeon E3-1200 v3/4th Gen Core Processor DRAM Controller Flags: bus master, fast devsel, latency 0 Capabilities: [e0] Vendor Specific Information: Len=0c <?> Kernel modules: ie31200_edac 00:01.0 PCI bridge: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor PCI Express x16 Controller (rev 06) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0, IRQ 16 Bus: primary=00, secondary=01, subordinate=01, sec-latency=0 I/O behind bridge: 00005000-00005fff Memory behind bridge: f0000000-f0ffffff Prefetchable memory behind bridge: 00000000c0000000-00000000d1ffffff Capabilities: [88] Subsystem: Lenovo Xeon E3-1200 v3/4th Gen Core Processor PCI Express x16 Controller Capabilities: [80] Power Management version 3 Capabilities: [90] MSI: Enable- Count=1/1 Maskable- 64bit- Capabilities: [a0] Express Root Port (Slot+), MSI 00 Capabilities: [100] Virtual Channel Capabilities: [140] Root Complex Link Capabilities: [d94] #19 Kernel driver in use: pcieport Kernel modules: shpchp 00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller (rev 06) (prog-if 00 [VGA controller]) Subsystem: Lenovo 4th Gen Core Processor Integrated Graphics Controller Flags: bus master, fast devsel, latency 0, IRQ 28 Memory at f1000000 (64-bit, non-prefetchable) [size=4M] Memory at e0000000 (64-bit, prefetchable) [size=256M] I/O ports at 6000 [size=64] [virtual] Expansion ROM at 000c0000 [disabled] [size=128K] Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit- Capabilities: [d0] Power Management version 2 Capabilities: [a4] PCI Advanced Features Kernel driver in use: i915 Kernel modules: i915 00:03.0 Audio device: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor HD Audio Controller (rev 06) Subsystem: Lenovo Xeon E3-1200 v3/4th Gen Core Processor HD Audio Controller Flags: bus master, fast devsel, latency 0, IRQ 32 Memory at f2610000 (64-bit, non-prefetchable) [size=16K] Capabilities: [50] Power Management version 2 Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit- Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00 Kernel driver in use: snd_hda_intel Kernel modules: snd_hda_intel 00:14.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB xHCI (rev 04) (prog-if 30 [XHCI]) Subsystem: Lenovo 8 Series/C220 Series Chipset Family USB xHCI Flags: bus master, medium devsel, latency 0, IRQ 24 Memory at f2600000 (64-bit, non-prefetchable) [size=64K] Capabilities: [70] Power Management version 2 Capabilities: [80] MSI: Enable+ Count=1/8 Maskable- 64bit+ Kernel driver in use: xhci_hcd 00:16.0 Communication controller: Intel Corporation 8 Series/C220 Series Chipset Family MEI Controller #1 (rev 04) Subsystem: Lenovo 8 Series/C220 Series Chipset Family MEI Controller Flags: bus master, fast devsel, latency 0, IRQ 29 Memory at f2619000 (64-bit, non-prefetchable) [size=16] Capabilities: [50] Power Management version 3 Capabilities: [8c] MSI: Enable+ Count=1/1 Maskable- 64bit+ Kernel driver in use: mei_me Kernel modules: mei_me 00:1a.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #2 (rev 04) (prog-if 20 [EHCI]) Subsystem: Lenovo 8 Series/C220 Series Chipset Family USB EHCI Flags: bus master, medium devsel, latency 0, IRQ 16 Memory at f261e000 (32-bit, non-prefetchable) [size=1K] Capabilities: [50] Power Management version 2 Capabilities: [58] Debug port: BAR=1 offset=00a0 Capabilities: [98] PCI Advanced Features Kernel driver in use: ehci-pci 00:1b.0 Audio device: Intel Corporation 8 Series/C220 Series Chipset High Definition Audio Controller (rev 04) Subsystem: Lenovo 8 Series/C220 Series Chipset High Definition Audio Controller Flags: bus master, fast devsel, latency 0, IRQ 33 Memory at f2614000 (64-bit, non-prefetchable) [size=16K] Capabilities: [50] Power Management version 2 Capabilities: [60] MSI: Enable+ Count=1/1 Maskable- 64bit+ Capabilities: [70] Express Root Complex Integrated Endpoint, MSI 00 Capabilities: [100] Virtual Channel Kernel driver in use: snd_hda_intel Kernel modules: snd_hda_intel 00:1c.0 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #1 (rev d4) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0, IRQ 16 Bus: primary=00, secondary=02, subordinate=02, sec-latency=0 I/O behind bridge: 00002000-00002fff Memory behind bridge: bfa00000-bfbfffff Prefetchable memory behind bridge: 00000000bfc00000-00000000bfdfffff Capabilities: [40] Express Root Port (Slot+), MSI 00 Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit- Capabilities: [90] Subsystem: Lenovo 8 Series/C220 Series Chipset Family PCI Express Root Port Capabilities: [a0] Power Management version 3 Kernel driver in use: pcieport Kernel modules: shpchp 00:1c.2 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #3 (rev d4) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0, IRQ 18 Bus: primary=00, secondary=03, subordinate=03, sec-latency=0 I/O behind bridge: 00004000-00004fff Memory behind bridge: f1e00000-f25fffff Prefetchable memory behind bridge: 00000000f1400000-00000000f1bfffff Capabilities: [40] Express Root Port (Slot+), MSI 00 Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit- Capabilities: [90] Subsystem: Lenovo 8 Series/C220 Series Chipset Family PCI Express Root Port Capabilities: [a0] Power Management version 3 Kernel driver in use: pcieport Kernel modules: shpchp 00:1c.3 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #4 (rev d4) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0, IRQ 19 Bus: primary=00, secondary=04, subordinate=04, sec-latency=0 I/O behind bridge: 00003000-00003fff Memory behind bridge: f1d00000-f1dfffff Capabilities: [40] Express Root Port (Slot+), MSI 00 Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit- Capabilities: [90] Subsystem: Lenovo 8 Series/C220 Series Chipset Family PCI Express Root Port Capabilities: [a0] Power Management version 3 Kernel driver in use: pcieport Kernel modules: shpchp 00:1c.4 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #5 (rev d4) (prog-if 00 [Normal decode]) Flags: bus master, fast devsel, latency 0, IRQ 16 Bus: primary=00, secondary=05, subordinate=05, sec-latency=0 Memory behind bridge: f1c00000-f1cfffff Capabilities: [40] Express Root Port (Slot+), MSI 00 Capabilities: [80] MSI: Enable- Count=1/1 Maskable- 64bit- Capabilities: [90] Subsystem: Lenovo 8 Series/C220 Series Chipset Family PCI Express Root Port Capabilities: [a0] Power Management version 3 Kernel driver in use: pcieport Kernel modules: shpchp 00:1d.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #1 (rev 04) (prog-if 20 [EHCI]) Subsystem: Lenovo 8 Series/C220 Series Chipset Family USB EHCI Flags: bus master, medium devsel, latency 0, IRQ 23 Memory at f261d000 (32-bit, non-prefetchable) [size=1K] Capabilities: [50] Power Management version 2 Capabilities: [58] Debug port: BAR=1 offset=00a0 Capabilities: [98] PCI Advanced Features Kernel driver in use: ehci-pci 00:1f.0 ISA bridge: Intel Corporation HM87 Express LPC Controller (rev 04) Subsystem: Lenovo HM87 Express LPC Controller Flags: bus master, medium devsel, latency 0 Capabilities: [e0] Vendor Specific Information: Len=0c <?> Kernel driver in use: lpc_ich Kernel modules: lpc_ich 00:1f.2 SATA controller: Intel Corporation 8 Series/C220 Series Chipset Family 6-port SATA Controller 1 [AHCI mode] (rev 04) (prog-if 01 [AHCI 1.0]) Subsystem: Lenovo 8 Series/C220 Series Chipset Family 6-port SATA Controller 1 [AHCI mode] Flags: bus master, 66MHz, medium devsel, latency 0, IRQ 26 I/O ports at 6088 [size=8] I/O ports at 6094 [size=4] I/O ports at 6080 [size=8] I/O ports at 6090 [size=4] I/O ports at 6060 [size=32] Memory at f261c000 (32-bit, non-prefetchable) [size=2K] Capabilities: [80] MSI: Enable+ Count=1/1 Maskable- 64bit- Capabilities: [70] Power Management version 3 Capabilities: [a8] SATA HBA v1.0 Kernel driver in use: ahci Kernel modules: ahci 00:1f.3 SMBus: Intel Corporation 8 Series/C220 Series Chipset Family SMBus Controller (rev 04) Subsystem: Lenovo 8 Series/C220 Series Chipset Family SMBus Controller Flags: medium devsel, IRQ 255 Memory at f2618000 (64-bit, non-prefetchable) [size=256] I/O ports at efa0 [size=32] Kernel modules: i2c_i801 01:00.0 3D controller: NVIDIA Corporation GK208M [GeForce GT 740M] (rev a1) Subsystem: Lenovo GK208M [GeForce GT 740M] Flags: bus master, fast devsel, latency 0, IRQ 16 Memory at f0000000 (32-bit, non-prefetchable) [size=16M] Memory at c0000000 (64-bit, prefetchable) [size=256M] Memory at d0000000 (64-bit, prefetchable) [size=32M] I/O ports at 5000 [size=128] Capabilities: [60] Power Management version 3 Capabilities: [68] MSI: Enable- Count=1/1 Maskable- 64bit+ Capabilities: [78] Express Endpoint, MSI 00 Capabilities: [100] Virtual Channel Capabilities: [128] Power Budgeting <?> Capabilities: [600] Vendor Specific Information: ID=0001 Rev=1 Len=024 <?> Capabilities: [900] #19 Kernel driver in use: nvidia Kernel modules: nvidiafb, nouveau, nvidia_drm, nvidia 03:00.0 Unassigned class [ff00]: Realtek Semiconductor Co., Ltd. RTS5227 PCI Express Card Reader (rev 01) Subsystem: Lenovo RTS5227 PCI Express Card Reader Physical Slot: 1 Flags: bus master, fast devsel, latency 0, IRQ 25 Memory at f1e00000 (32-bit, non-prefetchable) [size=4K] Capabilities: [40] Power Management version 3 Capabilities: [50] MSI: Enable+ Count=1/1 Maskable- 64bit+ Capabilities: [70] Express Endpoint, MSI 00 Capabilities: [100] Advanced Error Reporting Capabilities: [140] Device Serial Number 00-00-00-01-00-4c-e0-00 Capabilities: [150] Latency Tolerance Reporting Capabilities: [158] L1 PM Substates Kernel driver in use: rtsx_pci Kernel modules: rtsx_pci 04:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 10) Subsystem: Lenovo RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller Flags: bus master, fast devsel, latency 0, IRQ 19 I/O ports at 3000 [size=256] Memory at f1d04000 (64-bit, non-prefetchable) [size=4K] Memory at f1d00000 (64-bit, non-prefetchable) [size=16K] Capabilities: [40] Power Management version 3 Capabilities: [50] MSI: Enable- Count=1/1 Maskable- 64bit+ Capabilities: [70] Express Endpoint, MSI 01 Capabilities: [b0] MSI-X: Enable+ Count=4 Masked- Capabilities: [d0] Vital Product Data Capabilities: [100] Advanced Error Reporting Capabilities: [140] Virtual Channel Capabilities: [160] Device Serial Number 01-00-00-00-68-4c-e0-00 Capabilities: [170] Latency Tolerance Reporting Capabilities: [178] L1 PM Substates Kernel driver in use: r8169 Kernel modules: r8169 05:00.0 Network controller: Intel Corporation Wireless 7260 (rev 73) Subsystem: Intel Corporation Wireless-N 7260 Flags: bus master, fast devsel, latency 0, IRQ 31 Memory at f1c00000 (64-bit, non-prefetchable) [size=8K] Capabilities: [c8] Power Management version 3 Capabilities: [d0] MSI: Enable+ Count=1/1 Maskable- 64bit+ Capabilities: [40] Express Endpoint, MSI 00 Capabilities: [100] Advanced Error Reporting Capabilities: [140] Device Serial Number 0c-8b-fd-ff-ff-66-0e-a9 Capabilities: [14c] Latency Tolerance Reporting Capabilities: [154] Vendor Specific Information: ID=cafe Rev=1 Len=014 <?> Kernel driver in use: iwlwifi Kernel modules: iwlwifi -------------- My guess is that IRQ 32 and 33 are the internal sound card, maybe one of them is the one that is serving the HDMI and the other one the headphone jack. Furthermore it looks like IRQ 16, 23 and 24 are USB controllers and on one of them might be the external soundcard since it is connected via USB.. Which number do I need to assign to the SOUND_CARD_IRQ variable? I assume it's an environment variable to be set like "SOUND_CARD_IRQ=23" in the terminal for realtimeconfigquickscan. However, even after setting the variable realtimeconfigquickscan still gives me the info that I should set the variable. Is this IRQ business still something I need to worry about? (since most info about it on the interwebs is from 2000 and prior). Please advise Thank you. m.

7 years, 6 months

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Linux-audio-user July 2018