Need help with Sager NP8275 earphone jack

Just got the laptop last week, everything seems fine (except BD-player can't read bluray, I'm guessing it's a driver problem and have asked their tech support to help). Today there's a new problem, there's a humming sound coming from earphone. It is not my earphone, I've checked it with other devices and it work fine, it only happen when I use it with this laptop. It started just today, last night I used the laptop with the earphone and it was working perfectly no humming noise at all, nothing has changed so I'm not sure why there's a humming noise now. I know I probably should contact Sager about this but I'm hoping someone have had experience with this and know a quick fix

Just tried this, not sure if the additional info matters but:

When I restart the laptop, during boot and Sager logo there's a low hissing sound (used to be no noise), during Windows logo the noise gone as it should be, but once windows open up then the humming noise kicks in, this is driving me nuts, also unplugging the power brick intensify the noise...
Thanks

(Also does anyone know what this thing is, it's like a circle next to the mouse cursor, it activates sometimes for whatever reason and when it activates, the screen rolls a bit up or down, giving me a headache >.<)

 

When windows and the drivers load then active noise cancellation is applied to the output to suppress the system hum. You could try updating the drivers. Also worth checking if it happens on battery.

That symbol is likely the scroll function.

 

Hi Meaker,

thanks for the reply. I do have the latest driver from Sager's website (they had two, one is creative, one is intel, I installed both of them since I didn't know what I have there doesn't seem to be any conflict since I installed both a few days ago. Not sure if that could be the culprit but since the humming sound just started today I doubt that it is) I did try it on battery only, and the noise actually intensified for whatever reason

The symbol... err I just realized I've been grazing the touchpad while typing >.< lol, I'm not used to it yet since my old laptop had the touchpad deeper under cover so I never accidentally grazed them

 

not sure its the same for all clevo's but try Fn + F1 which will turn the touchpad off.

 

If the noise happens during battery it's likely interference from the internal power regulation and is something the drivers should help minimise, I would keep try the drivers.

The intel driver is for outputting sound through the HDMI (which acts like a different sound device).

 

DrJ: Thanks for the tip, that's handy

Meaker: The noise is gone now, all of a sudden, by itself >.< I'm wary if it's a sign of a probable hardware problem though. I don't know if I should try to exchange it, the time that it will take if I try to do that, and honestly aside from jack problem the laptop's pretty much in perfect shape, and there's always a chance if I exchange it, the replacement could have even more problems...

Edit: Oh my word I just found out the cause of the problem, there's this Control Center thing (I'm guessing from Clevo) and the headphone hums when the screen's brightness isn't 100%/power saving mode... well at least I know what it is now lol