Hi all,

HP Probook 6475b, Debian 9 (stretch) (MX 17.1 actually), TDE 14.0.5.  The
volume buttons will move the onscreen indicator between 0% and 10%, but no
farther, and the volume setting is unaffected.  The volume buttons work fine
in XFCE.  Any ideas where to look for the problem?

Thanks.