configuring audio on new pc

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MarPar
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configuring audio on new pc

Postby MarPar » Fri Jan 06, 2017 5:22 pm

Hello. This is my first post here.
On my pc is running Xubuntu 16.04 LTS and KDE Neon 5.8.90 (64 bit). I have two monitors working with a Nivdia GTX 950. After an update of Nvidia drivers I had removed the low latency kernel because the secondary monitor doesn't receive any signal from video card. With generic kernel 4.4.14 everything works fine: I have an M Audio KeyRig49 that works fine with Qjackctl and Qsynth. If I start Rosegarden I receive a message about performance. Tryng to solve this I have installed QuickScan to see the audio configuration (see attachments below).
Question: can I configure my pc to work with low latency kernel and have the monitors working fine too? Thanks a lot.
I'm waiting for a reply. If you ask me details I'll give them you.
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rghvdberg
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Re: configuring audio on new pc

Postby rghvdberg » Fri Jan 06, 2017 8:05 pm

first thing that springs in to my mind is to re-install the low-latency kernel and after booting up in the low-latency kernel (re-)install the nvidia drivers.

MarPar
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Re: configuring audio on new pc

Postby MarPar » Fri Jan 06, 2017 9:16 pm

Sorry... I've tried to install low latency and then, at login, only the primary monitor works (no signal to secondary monitor).
At this point with Synaptic, with the primary monitor, I have removed low latency kernel and then reboot. With generic kernel I had to reinstall first open drivers and then proprietary drivers: the two monitors works fine both.
At this moment I have no idea to solve this: two monitors working good both with the low latency kernel installed.
I attach the output of my lshw (hoping it helps a little bit more to solve the problem).

lshw.txt
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sadko4u
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Re: configuring audio on new pc

Postby sadko4u » Sun Jan 08, 2017 9:54 am

Yes, you can but you have to manually install official proprietary NVIDIA drivers. My system works on both monitor (DVI) and TV (HDMI) outputs.

MarPar
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Re: configuring audio on new pc

Postby MarPar » Mon Jan 09, 2017 11:13 am

I have resolved: I have updated the kernel (from 4.4.14 to 4.8) so I have now lowlatency kernel (just the 4.8) and the Nvidia drivers working (dual monitor working fine). At the next one and thanks all!

MarPar
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Re: configuring audio on new pc

Postby MarPar » Mon Jan 09, 2017 4:03 pm

cheking the system (I'm not sure everything is good):

Istantanea_2017-01-09_16-58-45.jpg


which operations can I do now?
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sadko4u
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Re: configuring audio on new pc

Postby sadko4u » Mon Jan 09, 2017 4:18 pm

You should fix all what is checked as 'no good'.

MarPar
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Re: configuring audio on new pc

Postby MarPar » Mon Jan 09, 2017 4:21 pm

OK. Question: in which order?

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sadko4u
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Re: configuring audio on new pc

Postby sadko4u » Mon Jan 09, 2017 4:28 pm

I think you should first follow the links mentioned at 'not good' points and read is about is it possible to do now, or it requires for kernel rebuild.
The last one needs RT kernel installation. So if you have an RT kernel in repository, you need to install it. Otherwise, you should download the similar version of kernel that you're using, apply RT patch to it and build from source.

MarPar
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Re: configuring audio on new pc

Postby MarPar » Mon Jan 09, 2017 4:50 pm

Here we are!

Code: Select all

marco@PC:~$ dkms status
bbswitch, 0.8, 4.4.14-040414-generic, x86_64: installed (WARNING! Diff between built and installed module!)
bbswitch, 0.8, 4.4.14-040414-lowlatency, x86_64: installed (WARNING! Diff between built and installed module!)
bbswitch, 0.8, 4.8.0-040800-generic, x86_64: installed
bbswitch, 0.8, 4.8.0-040800-lowlatency, x86_64: installed
nvidia-367, 367.57, 4.4.14-040414-generic, x86_64: installed
nvidia-367, 367.57, 4.4.14-040414-lowlatency, x86_64: installed
nvidia-367, 367.57, 4.8.0-040800-generic, x86_64: installed
nvidia-367, 367.57, 4.8.0-040800-lowlatency, x86_64: installed
tp-smapi, 0.41, 4.4.14-040414-generic, x86_64: installed (original_module exists)
tp-smapi, 0.41, 4.4.14-040414-lowlatency, x86_64: installed (original_module exists)
marco@PC:~$




and

Code: Select all

marco@PC:~$ uname -a
Linux PC 4.8.0-040800-lowlatency #201610022031 SMP PREEMPT Mon Oct 3 00:38:25 UTC 2016 x86_64 x86_64 x86_64 GNU/Linux
marco@PC:~$


MarPar
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Re: configuring audio on new pc

Postby MarPar » Thu Jan 12, 2017 3:39 pm

Hello!
I've tried to install kernel 4.9 but with this kernel (lowlatency) the secondary monitor doesn't work at all. So I've returned to 4.8 (lowlatency) and the secondary monitor works fine.


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