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Parsa Mousavi's questions

Martin Hope
Parsa Mousavi
Asked: 2020-05-18 09:45:55 +0800 CST
  • 1

When I change the volume inside a pulse-audio client like VLC , the output volume in the pavucontrol->Output Device->Built-in Audio analog Stereo gets adjusted accordingly.So when I increase the volume inside VLC , the effect gets boosted and increases dramatically which is too loud even in 50% volume and vice versa.

Furthermore Volume up and Volume down system shortcuts increase the VLC volume beside increasing the system's. Looks like they're kind of locked to each other.

I use PulseAudio 11.1 in ubuntu bionic.

How can I unlock that?

sound pulseaudio alsa volume-control
Martin Hope
Parsa Mousavi
Asked: 2020-05-18 03:50:59 +0800 CST
  • 1

I wanted to start jack server with the command 

sudo jackd -r -d alsa -r 44100

But I got the following errors :

JACK server starting in non-realtime mode
self-connect-mode is "Don't restrict self connect requests"
audio_reservation_init
Acquire audio card Audio0
creating alsa driver ... hw:0|hw:0|1024|2|44100|0|0|nomon|swmeter|-|32bit
ALSA: Cannot open PCM device alsa_pcm for playback. Falling back to capture-only mode
Released audio card Audio0
audio_reservation_finish
Cannot initialize driver
JackServer::Open failed with -1
Failed to open server

I tried the solutions here and here .Those Didn't work for me.

I use jackd version 1.9 with linux kernel 5.3 in ubuntu bionic.

sound jack
Martin Hope
Parsa Mousavi
Asked: 2020-05-01 08:07:21 +0800 CST
  • 0

I want to change the KDE Widget Style via command-line (because my systemsettings5 crashes while opening and I suspect one of the installed themes so I want to change it via command-line).
I was unable to find anything useful in ~/.config and some qdbus paths.

I know the name of the desired theme , but I don't know the required path in qdbus.

Any help is appreciated.
Thanks.

kde command-line qdbus
Martin Hope
Parsa Mousavi
Asked: 2020-04-28 05:06:52 +0800 CST
  • 3

After a few minutes of working with Blender 2.82 I noticed high memory usage (i.e almost 4GBs which is 1/4 of my RAM) from Xorg process in my system.After closing the blender though, the situation didn't change at all.
I currently use Kubuntu 20.04 and I've seen similar problem in Ubuntu studio 19.04 again with blender.
Have somebody seen a similar problem with other programs or is it perhaps a bug in the blender itself?
I use Nvidia GeForce GT 740 with driver 440 installed.

Thanks.

xorg kubuntu memory-usage
Martin Hope
Parsa Mousavi
Asked: 2020-03-21 08:05:17 +0800 CST
  • 21

When I run this command :

apt install libkf5*

I get the following error :

Unable to locate package libkf5*


I'm sure that the packages whose names start with libkf5 exist (tab-completion says so) . So the problem is not about the absence of those packages.(Note the asterisk at the end of that error message , the wildcard's not working at all)
I use apt v.1.9.
Thanks in advance.

apt
Martin Hope
Parsa Mousavi
Asked: 2020-02-24 11:52:25 +0800 CST
  • 1

After some searching , I didn't find any standard way to release GPU memory that is allocated to Tensorflow.So I want to know is there a way to manually shrink VRAM objects that are no longer needed without actually rebooting?(It has hugged almost all of my VRAM)
It's the duty of the OS to release system memory after process termination , but it cannot release GPU memory since it has been controlled by the DMA and the graphics driver.

OS : Ubuntu 18.04
Driver : nVidia 430
GPU : GeForce GT 740M

Any help is appreciated.

Thanks.

nvidia gpu memory-usage