Thanks Luke for your reply. It was an upgrade Maverick => Natty
Following your request I made some more tests and report the following : - It doesn't "PLOK !" when booting from an USB key of Natty live. - When booting Natty from HD on this machine : - It doesn't "PLOK !" when performing drum sound on GDM - However it DOES "PLOK !" immediately after user login : a) Regardless of which user logs in b) Regardeless of whether user logs into KDE or Gnome => In all cases it "PLOKs !" loudly before emitting the first "in-session" sound. Furthermore, it is one among 5 laptops I have upgraded from Maverick to Natty, all having mostly same setup, and this issue happens only with one machine (Dell Inspiron 9300). -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/777665 Title: [Natty] [Regression] Loud "PLOK" when starting sound -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs