I have an Acer Aspire 5943G
The right front speaker has not any sound. The sound quality is very good with this computer and I have not really observed that the sound not exist in the right unit.
But with surround sound I realise an echo to the left of the left speaker. I have download another Realtek driver. The message was given ‘The driver is clear to use’. Testing the new, I found the subwoofer was not working. Maybe it was Windows sound I have got? But the right speaker was still out of function.
I got the real sound back from the left and woofer changing to an older date.