connected BT mouse should unblank screen (windowed mode)

[kevin gunn]

when switching into windowed mode && a BT mouse is connected && screen is blanked (from time out or pwr key press) the BT mouse motion should unblank the screen

this may effect multiple projects so sort of shotgunning the effected project list

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Daniel van Vugt (vanvugt)]

Confirmed Mir is to blame for this to some extent. Using:
  $ env MIR_CLIENT_INPUT_RECEIVER_REPORT=log mir_demo_client_fingerpaint
and putting the screen to sleep with Alt+P in mir_proving_server, I can see that motion events are no longer delivered to the client while the screen is off. Mir only delivers key events to the client while the screen is off, not motion.

This is problem given that Unity8 is actually a client of the system compositor. So I expect Mir won't deliver it any motion events while the screen is off.

[Daniel van Vugt (vanvugt)]

Also note this is an intentional _feature_ right now that clients do not receive motion events with the screen off --> bug 1359264.

[Cris Dywan (kalikiana)]

Clicking doesn't seem to work either - not just motion.

[kevin gunn (kgunn72)]

marking critical as this is the new #1 from product managment

[Daniel van Vugt (vanvugt)]

I'm not familiar with our overall powerd/bus plan, but at a guess we would want USC to action this. And in theory USC as the system compositor will already see all input events even while the screen is off. Thus comments #3 and #4 would be irrelevant. So I suspect this bug will be no-action-required in Mir itself.

[Daniel van Vugt (vanvugt)]

Sounds similar to bug 1516272 but still different, I think.

[Michał Sawicz (saviq)]

Unity8 is not involved in display blanking today.

[PS Jenkins bot (ps-jenkins)]

Fix committed into lp:unity-system-compositor at revision 269, scheduled for release in unity-system-compositor, milestone Unknown

[Allan LeSage (allanlesage)]

Just a note having tested afrantzis' silo that mouse-waking will have the effect of switching to windowed mode, I can imagine a scenario in which this may not be desired, e.g. if a previously paired device in my house wakes.

[Launchpad Janitor (janitor)]

This bug was fixed in the package unity-system-compositor - 0.3.1+16.04.20160121.1-0ubuntu1

---------------
unity-system-compositor (0.3.1+16.04.20160121.1-0ubuntu1) xenial; urgency=medium

  [ CI Train Bot ]
  * No-change rebuild.

unity-system-compositor (0.3.1+16.04.20160121-0ubuntu1) xenial; urgency=medium

  [ Alexandros Frantzis ]
  * Unblank the screen when a pointer or key event arrives. (LP: #1488413)

  [ Andreas Pokorny ]
  * Implement a DBus interface for setting pointer speed/acceleration.
    (LP: #1536383)

 -- Alexandros Frantzis <email address hidden> Thu, 21 Jan 2016 17:58:58 +0000