[SOLVED]Sound became very scratchy since yesterday.

[aicram]

Hello All,

As of yesterday morning my sound became totally scratchy and bad sounding. It was great before this. Here is some info:

inxi -A
Audio: Card-1: NVIDIA GF116 High Definition Audio Controller driver: snd_hda_intel Sound: ALSA ver: k3.13.0-32-lowlatency
Card-2: Advanced Micro Devices [AMD/ATI] SBx00 Azalia (Intel HDA) driver: snd_hda_intel
Card-3: Yamaha driver: USB Audio

inxi -F
System: Host: xxxx Kernel: 3.13.0-32-lowlatency x86_64 (64 bit) Desktop: Gnome Distro: Linux Mint 17.1 Rebecca
Machine: System: Gigabyte product: N/A
Mobo: AMD model: 990FXA-UD3 version: x.x Bios: American Megatrends version: FA date: 10/23/2012
CPU: Quad core AMD FX-4300 (-MCP-) cache: 8192 KB flags: (lm nx sse sse2 sse3 sse4_1 sse4_2 sse4a ssse3 svm)
Clock Speeds: 1: 3800.00 MHz 2: 1400.00 MHz 3: 1400.00 MHz 4: 1400.00 MHz
Graphics: Card: NVIDIA GF116 [GeForce GTX 550 Ti] X.Org: 1.15.1 driver: nvidia Resolution: 1920x1080@60.0hz
GLX Renderer: GeForce GTX 550 Ti/PCIe/SSE2 GLX Version: 4.4.0 NVIDIA 340.96
Audio: Card-1: NVIDIA GF116 High Definition Audio Controller driver: snd_hda_intel Sound: ALSA ver: k3.13.0-32-lowlatency
Card-2: Advanced Micro Devices [AMD/ATI] SBx00 Azalia (Intel HDA) driver: snd_hda_intel
Card-3: Yamaha driver: USB Audio
Network: Card: Realtek RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller driver: r8168
IF: eth0 state: up speed: 1000 Mbps duplex: full mac: 9480:27:4a:a9
Drives: HDD Total Size: 2000.4GB (57.5% used) 1: id: /dev/sda model: ST2000DM001 size: 2000.4GB
Partition: ID: / size: 1.8T used: 1.1T (63%) fs: ext4 ID: swap-1 size: 17.15GB used: 0.00GB (0%) fs: swap
RAID: No RAID devices detected - /proc/mdstat and md_mod kernel raid module present
Sensors: System Temperatures: cpu: 13.9C mobo: N/A gpu: 35C
Fan Speeds (in rpm): cpu: N/A
Info: Processes: 272 Uptime: 4:34 Memory: 2921.1/16017.3MB Client: Shell inxi: 1.8.4

I am using a firewire Behringer FCA202 and that has been working fine as well as my yamaha ypg235usb. Have no idea what made the sound so awful since yesterday morning.

Using the kxstudio repos with linuxmint Rebecca 17.1. Have been using the kxstudio repos for a couple of years now. Love the setup. Must be a way to fix this.

Any thoughts or help will be greatly appreciated.

Thank you.

aicram

[glowrak guy]

Which sounds are scratchy...
which kind of sounds do you typically use?

standalone softsynth via jackd like amsynth?
softsynth plugin like yoshimi in a daw like qtractor/carla?
audio from software video files like .flv/.mp4?
audio track in a daw from your Yamaha keyboard output?

Did you add or update any software using synaptic/apt-get?

Did you rearrange usb device connections?

Can you post your /home/your-username/.jackdrc textfile?
Cheers

[aicram]

Thank you so very much for answering. Believe I may have fixed the problem. The sound was scratchy in every synth, youtube videos, playing a song in clementine, etc. There were some upgrades done but they were the suggested ones from linuxmint. Did not remember what they all were. One of those upgrades possibly caused the problem.

Happened to find a fix in ubuntu forums.

Workaround for glitchy (crackling, skipping) audio is to open:
/etc/pulse/default.pa

Find the line that looks like this and add "tsched=0".
Code:

load-module module-udev-detect

It should look like this:
Code:

load-module module-udev-detect tsched=0

After doing this, the sound is back to normal.

Thanks again.

aicram