Hi Mauro, There turns out to have been an issue in the event subscription fix; in particular the first control event is missed due to a subtle bug in the patch. This patch fixes it. Once it's in, I'll submit the corresponding patches to the stable kernels. Please pull. The following changes since commit dafb7f9aef2fd44991ff1691721ff765a23be27b: v4l2-controls: add a missing include (2018-11-02 06:36:32 -0400) are available in the git repository at: ssh://linuxtv.org/git/sailus/media_tree.git tags/event-sub-fix-sign for you to fetch changes up to cbafeff167c91243f336e1703d7f86aa019b973e: v4l: event: Add subscription to list before calling "add" operation (2018-11-06 10:57:34 +0200) ---------------------------------------------------------------- fix event subscription ---------------------------------------------------------------- Sakari Ailus (1): v4l: event: Add subscription to list before calling "add" operation drivers/media/v4l2-core/v4l2-event.c | 43 ++++++++++++++++++++---------------- 1 file changed, 24 insertions(+), 19 deletions(-) -- Kind regards, Sakari Ailus e-mail: sakari.ailus@xxxxxx