Using amixer sometimes causes left and right audio channels to desync in volume

[lynx-xdg]

When changing the audio volume with amixer sometimes the left and right audio channels desync. I'd reccommend switching from amixer to something like pactl.

[lynx-xdg]

The volume control section can be replaced with something like:

awful.key({ altkey }, "KP_Add", function()
	os.execute(string.format("pactl set-sink-volume 0 +1%%"))
	beautiful.volume.update()
end, { description = "volume up", group = "hotkeys" }),
awful.key({ altkey }, "KP_Subtract", function()
	os.execute(string.format("pactl set-sink-volume 0 -1%%"))
	beautiful.volume.update()
end, { description = "volume down", group = "hotkeys" }),
awful.key({ altkey }, "m", function()
	os.execute(string.format("pactl set-sink-mute 0 toggle"))
	beautiful.volume.update()
end, { description = "toggle mute", group = "hotkeys" }),