Guide now available in PDF format! (see thread attachments)
Quote:
Originally Posted by Silpheed2K
Before
you read this guide, I would like to point out that I've been working
hard on this guide. I can not stress how long I've spent figuring out
and coming up with solutions for the problems I encountered. (and
frustration at times) I recommend you go through the ENTIRE guide so
everything gets done. I also put the uninstall part in the beginning so
we can have a clean start. I really hope this guide helps a lot of you.
I also hope this guide lasts a while. This guide is subject to change
and be updated. Thank you.
P.S. PulseAudio team please get it right. I can't be around to fix everything, especially after what this distro put me through.
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This tutorial is going to explain how to fix pulseaudio completely and
the video/audio playback issues of VLC Media Player. Hope this helps.
The time scheduling function is still a bit bugged and gives off audio
issues I noticed. So unless you want 5 seconds of chopping, skipping,
and garbling each time you start an audio app, we're not going to use
it. Also, if you're fine with that, can live with the issue and like
how it makes PulseAudio less CPU intensive, then skip the step where we
disable time scheduling in this tutorial. (You can disable it later if
needed after you're done)
So let's get started.
Fixing PulseAudio: We want no less than perfection.
Fresh off of an upgraded install I noticed many things were broken with the audio, so we're going to uninstall PulseAudio first.
In a terminal, type the following:
Code:
su -
yum remove pulseaudio
Restart your computer completely now.
Now that you're back, open a terminal and type the following:
Code:
su -
yum install pulseaudio alsa-plugins-pulseaudio pulseaudio-esound-compat pulseaudio-libs pulseaudio-libs-glib2 pulseaudio-module-zeroconf pulseaudio-libs-zeroconf xmms-pulse pulseaudio-module-gconf wine-pulseaudio xine-lib-pulseaudio pulseaudio-utils pulseaudio-module-bluetooth gst-mixer padevchooser paman paprefs pavucontrol pavumeter
This will reinstall PulseAudio and all the extras we need to work with.
[Skip this step if you can live with time-scheduling, skipping is not recommended]
Next, run the following as root: (or open "/etc/pulse/default.pa" manually as root)
Code:
gedit /etc/pulse/default.pa
and replace the line:
Quote:
load-module module-hal-detect
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with:
Quote:
load-module module-hal-detect tsched=0
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save your changes. This will disable time-scheduling.
Next, run the following as root: (or open "/etc/pulse/daemon.conf" manually as root)
Code:
gedit /etc/pulse/daemon.conf
then change the line:
Quote:
; realtime-scheduling = no
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to
Quote:
realtime-scheduling = yes
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also, change the line:
Quote:
; default-fragment-size-msec = 25
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to
Quote:
default-fragment-size-msec = 10
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save your changes.
Restart your computer completely again.
Now, open
System > Preferences > Advanced Volume Control
and make sure that PCM, Master, and the various PulseAudio devices
under the "Device:" menu aren't muted and are raised to adequate volume
levels.
Next, open
Applications > Sound & Video > PulseAudio Device Chooser
and make sure the Default Server, Default Sink, and Default Source are all set to Default.
After that, in the device chooser, select the "Volume Control" option
in the menu and go through each tab making sure none of the streams are
muted.
Now, go to the
Configuration tab and for
Internal Audio - Profiles
set it to the appropriate profile until you hear audio from an audio
file. If you're hearing audio already then it is probably set to the
proper profile already. Experiment with the profiles using an audio
file of some sort, playing it. I used Michael Jackson's (R.I.P) Beat It.
The wrong profile means no audio will come from your sound card at all.
Example: I didn't hear any sound because my profile was set to digital
and not analogue, because analogue is what my sound card supports.
If you are not hearing any audio at all then you need to check the last
3 routines we just went through. (The advanced volume controls for
mutes, Defaults of the Device Chooser, volume control in the device
chooser for wrong settings)
You're done! Now you can finally enjoy your audio in Fedora.
sidenote: I also noticed the time-scheduling feature
can also cause lagging in video playback; which is why I like it better
disabled.
If you're still having PulseAudio issues then please open a support
thread and ask for help. Now, I shall continue to the next part of my
guide.
Fixing video playback issues with VLC Media Player
Before we start to fix VLC Media Player, I would like to ask you to
Download this file as we're going to use it, for testing, later. I chose this file because it is going to give you a fair amount of problems playing it with the default settings.
We are going to fix the chopping, skipping and stutter of the audio with VLC Media Player that some of you been experiencing.
First, open VLC and go to
Tools > Preferences. (CTRL+P for those who cant find it)
The options should already be set to simple; hit the
Audio tab and change
Output: Type to
Pulseaudio audio output; As shown in the picture below.
Now, change the
Show settings option to
All and go to
Input / Codecs > Access Modules > File; Change the
caching value to
1500 (there are 1000 milliseconds in a second)
You can adjust this a little higher or lower later. As long as it's
1000 or above, it should be fine. (I ultimately ended up lowering mine
to around 1300, personally)
Now, that video I had you download? Now it's time to test VLC. Open the
video file in VLC and press play, watching it from beginning to end.
You are watching it for things like glitches in the audio and the audio
cutting off half way through the video. If everything is fine with the
audio and video, you're done! If not, continue to the next part of this
tutorial.
(If it's an audio issue still then you may want to check your settings or open a support thread)
You can try playing the video and skipping around back-and-forth to see
if the audio crashes out, but it shouldn't with the settings in this
tutorial.
If there is screen tearing in the video (slices in the video images)
you may want to try changing the video output settings. (assuming your
CPU/GPU is fast enough to handle the video)
In
Tools > Preferences (Simple) go to the
Video tab and change
Display: Output
to various options and play the video until the tearing stops.
(experiment) I have mine set to OpenGL because I have OpenGL drivers
installed for my video card.
(If it's an issue still after your experimentation, then you may want to open a support thread)
There are more things you can do in-depth, which can degrade video quality, but those are better left for a support thread.
Hope this guide has solved your audio and video issues.