tigerdognew
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Linux Support At LastEVGA have released limited support for the Nu Audio (not Pro) under Linux. It's pretty bare-bones, but it's enough to allow enjoying the quality of the Nu's hardware and design without needing Windows. A little background: internally the Nu is constructed as a USB audio device and an USB-to-PCIe bridge, on the same module. Linux kernel has supported USB 2.0 audio devices for years, and as of kernel 5.4, even has a special tweak so that the EVGA Nu is recognized as DSD capable. None of the enhanced functions (Nahimic audio EQ, sound tweaks, etc.) are available in Linux. Support is, as I say, bare-bones. Windows Still NeededThere is one hitch: the EVGA Nu requires different firmware under Linux, and as of this writing, firmware can only be changed under Windows. At least temporarily, install the card in a Windows system and install the normal EVGA driver and utility. This is important - several settings must be made under Windows, before moving the card to Linux. A few things to tweak: - Lighting Effects: if you want to use any of the Nu's cool lighting features, or just to turn them off, do that using the Windows utility.
- Output: the Nu Utility allows you to select line out, headphone, or both outputs. This cannot be done under Linux, so click to activate both of them.
- Volume: The Nu has two volume controls. The main one controls the output level from the Digital Analog Converter (DAC). The second is an analog control that works for line and headphone outputs. Use the headphone volume to crank the headphone output to or near the highest level. This also cannot be changed under Linux.
The good news is, these tweaks are retained by the Nu through firmware reflashing and between system restarts (like from Windows to Linux.) Firmware UpdateOperating under Linux requires different firmware from the current Windows drivers. EVGA makes Linux firmware available here: https://cdn.evga.com/nuaudiocard/NU_Audio_FW_for_Linux.zip Download and unzip the firmware files and firmware update program under Windows. The download archive includes a PDF describing the process. and I found the firmware update process to be straightforward. There are two firmware versions: - EVGA_Audio_XMOS_20200515_Ver0x001_Linux_MinIn_DFU_IS25LP016D.bin installs with Microphone input active
- EVGA_Audio_XMOS_20200515_Ver0x002_Linux_LineIn_DFU_IS25LP016D.bin installs with Line input active.
There is no mechanism to switch from mic to line input once running under Linux. After firmware update, restart the system under Linux. I think the settings will also be retained if you have to move the Nu to a different computer. Under (Ubuntu) LinuxFirst check to make sure the Nu is seen and active. Open a terminal and run alsamixer. Push F6; the Nu should be listed - select it. Initial volume level is low, and increasing the volume using the Pulseaudio volume control doesn't help. You must use alsamixer from the CLI to set levels at 100% (see attached screenshot) According to EVGA, only the "PCM Front" control is active. It feeds that analog section mentioned above. Set it to the maximum level, then use the Pulseaudio volume control to set volume to a comfortable level. If you use the Nu for recording, push F5 and confirm "Line" or "Mic" matches the firmware you've loaded above. Set the record level at 100%. At this point, you're ready to enjoy the EVGA Nu's quality sound for playback under Linux. If you intend to use the Nu for recording, read on. RecordingI use my Nu for audio recording - I remaster old vinyl for fun and self-torture. Here are a few quirks I've found. - PulseAudio: Pulse reports the Nu as a 4.0 channel card. It's not.
- PulseAudio sampling: in Ubuntu, Pulse initializes the card and sets the recording sample rate and type. To change the default, edit /etc/pulse/daemon.conf. I've set mine to 192KHz/32bit format, like this:
default-sample-format = s32le default-sample-rate = 192000 alternate-sample-rate = 48000
ConclusionI hope this guide is helpful to those of us who don't live in Windows every day. The Nu is a great product. I hope EVGA continues to enhance support under Linux. My thanks to Lee at EVGA and the people over at audiophilestyle.com, whose efforts made this whole thing come together.
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Cool GTX
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Re: Working Guide: Using Nu Audio in Linux
2020/06/01 08:39:04
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Thanks for the Guide
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tigerdognew
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Re: Working Guide: Using Nu Audio in Linux
2020/06/01 17:08:47
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Cool GTX Thanks for the Guide
Please share your experiences, especially if there's room for improvement. This is a work in progress for all of us, I think.
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simersby
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Re: Working Guide: Using Nu Audio in Linux
2020/06/02 13:19:21
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Will I be able to use it in both windows and Linux(dualboot)
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Cool GTX
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Re: Working Guide: Using Nu Audio in Linux
2020/06/02 14:54:06
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simersby Will I be able to use it in both windows and Linux(dualboot)
sorry for the delay ... had to release your post from filter as each OS is a separate boot - I do not see why it would cause issues
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tigerdognew
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Re: Working Guide: Using Nu Audio in Linux
2020/06/02 15:26:25
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simersby Will I be able to use it in both windows and Linux(dualboot)
Short answer - yes! Long answer - yes! I do this, also. When you boot into Windows after running Linux, the EVGA Windows driver will notice the Linux firmware on the card. You'll be prompted to close all audio applications and update the firmware to match the Windows driver's expectation. Before you shut down and boot to Linux, you'll need to use the stand-alone updater described above, and flash the Linux software back onto the card. I've done this multiple times with no ill effects.
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simersby
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Re: Working Guide: Using Nu Audio in Linux
2020/06/02 15:32:36
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Cool GTX
simersby Will I be able to use it in both windows and Linux(dualboot)
sorry for the delay ... had to release your post from filter as each OS is a separate boot - I do not see why it would cause issues
No worries. Thanks for your answer, I appreciate your help with Linux support, we need it. My question: is changing the firmware(microcode) will let me continue to use Nu Audio with Windows? Or I need to have 2 different firmwares for Linux and Windows?
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simersby
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Re: Working Guide: Using Nu Audio in Linux
2020/06/02 16:06:05
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tigerdognew
simersby Will I be able to use it in both windows and Linux(dualboot)
Short answer - yes! Long answer - yes! I do this, also. When you boot into Windows after running Linux, the EVGA Windows driver will notice the Linux firmware on the card. You'll be prompted to close all audio applications and update the firmware to match the Windows driver's expectation. Before you shut down and boot to Linux, you'll need to use the stand-alone updater described above, and flash the Linux software back onto the card. I've done this multiple times with no ill effects.
Thanks for your guide and fast answer. Having this option is a good sign. I hope EVGA will make some native apps and drivers for Linux. Again, thanks!
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TraubeMinze
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Re: Working Guide: Using Nu Audio in Linux
2020/06/19 09:27:58
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How high should i do the Main Volume for the DAC? Zou have only specified the headphone volume.
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tigerdognew
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Re: Working Guide: Using Nu Audio in Linux
2020/06/19 09:52:10
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Under Windows, I have tried the DAC main volume at 80% and 100%; I don't notice any real difference when I move to Linux. I think the DAC digital output is controlled by Alsa under linux, so maybe this setting has no impact at all. A 100% correct answer needs to come from someone from EVGA who has detailed knowledge of how the Linux firmware operates.
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TraubeMinze
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Re: Working Guide: Using Nu Audio in Linux
2020/06/19 09:58:29
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Thank you, but will i able to turn down the headphone volume in Linux? (Not the Main DAC)
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tigerdognew
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Re: Working Guide: Using Nu Audio in Linux
2020/06/19 11:47:10
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TraubeMinze will i able to turn down the headphone volume in Linux? (Not the Main DAC)
Short answer: yes Long answer: yes. ALSAmixer gives control over the output level, by turning down the DAC output. The headphone output is in series after the DAC output, so turning down the DAC turns down the volume to the headphones also. PulseAudio (as used by Ubuntu and others) seems to reduce volume in the digital realm, independent of ALSA. "Seems" because I don't know whether it's manipulating the bitstream separately from ALSA, or sending instructions to ALSA. Someone smarter than me needs to answer this.
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magictoaster
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Re: Working Guide: Using Nu Audio in Linux
2020/12/11 11:15:39
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Thanks for the guide!
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tigerdognew
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Re: Working Guide: Using Nu Audio in Linux
2020/12/28 17:16:05
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If anyone is still watching this thread, I've uncovered one odd behavior: under Xubuntu 20.04, everything works, until the system goes into "suspend" mode. Upon awakening, there's no audio. I've only been able to get it back by rebooting. I normally don't use suspend, so for me it's not an issue, just throwing this out in case anyone else sees this.
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whyamihereagain
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Re: Working Guide: Using Nu Audio in Linux
2021/01/05 19:32:02
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mdinslage
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Re: Working Guide: Using Nu Audio in Linux
2021/02/02 13:43:56
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Thanks for this. I was interested in getting this sound card, but honestly, I dual boot quite frequently and having to flash the bios on each reboot is too much of a PIA. Can't EVGA make a bios that supports Windows and Linux without reflashing?
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Sonto
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Re: Working Guide: Using Nu Audio in Linux
2021/02/15 23:10:12
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Thank you much for the guide!
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jfw06013
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Re: Working Guide: Using Nu Audio in Linux
2024/09/18 21:56:32
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Thanks for the guide as I will not upgrade to Windows 11. Linux here I come!
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quesync
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Re: Working Guide: Using Nu Audio in Linux
2024/09/24 22:23:34
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jfw06013 I'm in the same boat. I have had it with windows and it's spyware and on again off again recall monitoring. I've been trying to figure out what distro to use and for me i game way more then i listen to audiophile bit perfect music which we can with this card. CachyOS seems to be the best and least stuttery OS. I don't know but there is a very detailed walk through on you-tube for setup, but i need to hear it through this EVGA card. I don't want to dual boot i want to cut the cord permanently. I use an 7900xtx AMD card the best team red has and i love the card. I just want this sound card to work, and work well for all my games. Please share your experiences with linux and what distro you use, if that makes a huge difference. My loathing of windows has really forced me to do this and this is the one piece of hardware i will not give up, i can afford an equal quality outboard D/A converter so i have ot make this card work with linux. Please tell us how its going!
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