I do think the issue is that the xfce4 panel is in gtk2, and the gtk2 sound indicator was written specifically to support xfce. see: https://bugs.launchpad.net/ubuntu/+bug/1048217
Given what's in 1048217, I think comment #27 needs to be adjusted to work for lubuntu as well, and then it can be a proper fix. And it should also probably check against pidof xfce4-panel, since that is the relevant program, right? -- You received this bug notification because you are a member of DX Packages, which is subscribed to indicator-sound in Ubuntu. Matching subscriptions: dx-packages https://bugs.launchpad.net/bugs/1208204 Title: indicator-sound no longer functions with xfce4-indicator-plugin Status in Sound Menu: New Status in “indicator-sound” package in Ubuntu: Triaged Bug description: downgrading to the previous version, indicator- sound_12.10.2daily13.04.12-0ubuntu1_amd64 from Raring allows the sound indicator to function in Saucy. ProblemType: Bug DistroRelease: Ubuntu 13.10 Package: indicator-sound 12.10.2+13.10.20130731-0ubuntu1 ProcVersionSignature: Ubuntu 3.10.0-6.17-generic 3.10.3 Uname: Linux 3.10.0-6-generic x86_64 ApportVersion: 2.12-0ubuntu2 Architecture: amd64 Date: Sun Aug 4 12:20:02 2013 InstallationDate: Installed on 2012-08-01 (367 days ago) InstallationMedia: Xubuntu 12.10 "Quantal Quetzal" - Alpha amd64 (20120801) MarkForUpload: True SourcePackage: indicator-sound UpgradeStatus: No upgrade log present (probably fresh install) To manage notifications about this bug go to: https://bugs.launchpad.net/indicator-sound/+bug/1208204/+subscriptions -- Mailing list: https://launchpad.net/~dx-packages Post to : dx-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~dx-packages More help : https://help.launchpad.net/ListHelp