I have fresh installed Ubuntu 11.04 on my Lenovo SL500. My problem is I have constant noise on my headphone although all sound channels and microphone is muted from alsamixer.
Any body have same problem and how can i fix this?
My sound card is:
olcay@olcay-ThinkPad-SL500-Linux:~$ aplay -l **** List of PLAYBACK Hardware Devices **** card 0: Intel [HDA Intel], device 0: CONEXANT Analog [CONEXANT Analog] Subdevices: 0/1 Subdevice #0: subdevice #0 card 0: Intel [HDA Intel], device 1: Conexant Digital [Conexant Digital] Subdevices: 1/1 Subdevice #0: subdevice #0 card 0: Intel [HDA Intel], device 3: HDMI 0 [HDMI 0] Subdevices: 1/1 Subdevice #0: subdevice #0
Here is my alsa-info.sh output:
Here is "sudo lspci -vvvnn" output:
Answers to questions Luis Alvarado asked:
Muting and changing levels in alsamixer changes noise but the main noise does not go away or change.
The noise comes continuously and opening sound settings does not stop noise.
Moving mouse around, pressing keyboard keys and activity on hard drive change noise. I do not have my wireless mouse with me so I can not test it. It is same with touchpad.
Scrolling up and down in web browser and terminal changes noise.
I do not hear noise from internal speaker. It comes only from headphone.
Unplugging the laptop adapter from socket changes noise level to more lower level but again it is still there. I use a grounded socket.
It does not change anything.
This is my work computer so I do not use Home Theater, TV or Speakers.
This problem also occurs on Windows, so this mean it is not software or driver related. It is most likely a hardware error, cable problem or grounding problem. And bounty goes to Luis Alvarado.