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Good day to all of you Linux users. This is my first time getting a Linux operating system and I would like to get some help about my left speaker and earphones not working and my speaker is working fine on windows but after I install Ubuntu this is the first problem that occurred.

I am running on a Lenovo-G560 laptop with Ubuntu 21.04 installed

Dr Z
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    Welcome to Linux. There isn't enough information here to offer an answer, so could you [edit] your question to include: (0) the version of Ubuntu you're running (1) the brand/model of computer you're using. With this, it may be possible to offer a solution – matigo Jan 21 '22 at 04:23
  • @matigo I have already edited my question – Dr Z Jan 21 '22 at 04:49
  • Have you checked your Settings / Sound / Balance configuration and tried the Test function for both left and right speakers? – stumblebee Jan 21 '22 at 04:49
  • @stumblebee yes and I even double check it just to make sure :( – Dr Z Jan 21 '22 at 04:53
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    Ubuntu 21.04 (along with all flavors) is End-of-Life and thus unsupported on this site (https://askubuntu.com/help/on-topic), and many other Ubuntu sites, unless your question is specific to moving to a supported release of Ubuntu. https://lists.ubuntu.com/archives/ubuntu-announce/2022-January/000276.html https://help.ubuntu.com/community/EOLUpgrades – guiverc Jan 21 '22 at 05:49
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    Please note Ubuntu releases are year.month in format; ie. 21.04 was the 2021-April release which had 9 months of supported life. It reached its EOL only hours ago. You should release-upgrade to 21.10; OR if it's a new install you could start again with a supported release of Ubuntu (you can re-install Ubuntu Desktop releases without touching user files, or needing to re-install manually installed apps (from Ubuntu repositories), just don't format & re-use existing partitions) Use a LTS release if you don't wish to release-upgrade ever 6-9 months (21.04 + 9 months = 2022.Jan EOL) – guiverc Jan 21 '22 at 05:51
  • @guiverc ok thank you so much for your answer i will try to update Ubuntu now – Dr Z Jan 21 '22 at 06:40
  • Just FYI as you're new to Ubuntu I gather; the kernel you're currently using is 5.11, so when you release-upgrade (or re-install) & switch to Ubuntu 21.10; you'll be using the 5.13 kernel, which will cause all kernel modules to upgrade as well... (the significance of this is what is commonly known as drivers are actually kernel modules.. so you may find it better on 21.10 than it is on 21.04, may also not change - but I'd upgrade first given that's critical & may change things here...) – guiverc Jan 21 '22 at 06:49
  • I'm sorry, I did not realize 21.04 reached EOL just hours ago, After your upgrade to 21.10, IMHO, I highly recommend sticking with LTS releases from here on out instead of bleeding edge technology. 22.04 LTS will be released in April of this year. – stumblebee Jan 21 '22 at 07:11

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I had the same problem after I changed from 2-channel mode to 4-channel in alsamixer. I could solve it by using the left and right arrow keys to access the channel option, then using the up and down arrow keys to change the value to 4 or 6 channels.

You can open alsamixer in Terminal like this:

Open alsamixer using this command in terminal

matigo
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Sayanth PS
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