After succesfully merging x11-misc/gkrellm-volume and enabling the plugin under gkrellm's Configuration / Plugins, the plugin is not displayed. Changing the "place" of the plugin doesn't help either. Using: x11-misc/gkrellm-volume-0.8-r1 app-admin/gkrellm-1.2.11
did you select which components you want displayed?
I merge the plugin, started gkrellm, went to Configuration / Plugins, selected the appropriate plugin from the list and clicked on the "enable" checkbox. Nothing happened. I tried clicking on "Place" hoping that changing of the plugin placement would make it appear, but it didn't help. The plugin was still not displayed.
OK, please try this: in the Configuration/Plugins menu, you'll see a list of plugins (not the enable/disable list). Click on the Volume Plugin item, and you'll see that you have to actually enable different mixers. I'm closing this bug, because it's not a bug, it's user error (no offense).