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[Bug 1507982] Re: [regression] OTA7 broke previously working app

 

Sorry. It appears in r2867 (which went into Mir 0.16.0) we broke the
binary input event protocol (which is separate to protobuf). It's
sufficiently broken that any Mir-0.15 or earlier client will reject and
ignore all input messages it gets from v0.16 or newer servers.

http://bazaar.launchpad.net/~mir-team/mir/development-
branch/revision/2867#3rd_party/android-
input/android/frameworks/base/include/androidfw/InputTransport.h

It would be difficult and messy to repair the problem sufficiently such
that the old and new binary formats could be supported simultaneously.
Not impossible, but probably not something we're going to invest in
right now.

That plus r2893 made the problem worse by rejecting older clients
outright, possibly without knowing the intricacies of the r2867
regression. Again, sorry this happened. The relevant people have been
informed so hopefully it won't happen again.

** Changed in: mir
       Status: Triaged => Won't Fix

** Changed in: mir/0.16
       Status: Triaged => Won't Fix

** Changed in: mir/0.17
       Status: Triaged => Won't Fix

** Changed in: mir (Ubuntu)
       Status: Triaged => Won't Fix

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https://bugs.launchpad.net/bugs/1507982

Title:
  [regression] OTA7 broke previously working app

Status in Canonical System Image:
  Confirmed
Status in Mir:
  Won't Fix
Status in Mir 0.16 series:
  Won't Fix
Status in Mir 0.17 series:
  Won't Fix
Status in mir package in Ubuntu:
  Won't Fix

Bug description:
  OTA7 broke previously working app
  after OTA7 update on Meizu MX4, glmark2 stopped working https://uappexplorer.com/app/glmark2.sturmflut
  system updates should not break apps

  
  ~/.cache/upstart$ cat application-click-glmark2.sturmflut_glmark2_0.4.1.log
  libust[24877/24879]: Error: Error opening shm /lttng-ust-wait-5-32011 (in get_wait_shm() at lttng-ust-comm.c:958)
  libust[24877/24879]: Error: Error opening shm /lttng-ust-wait-5-32011 (in get_wait_shm() at lttng-ust-comm.c:958)
  libust[24877/24878]: Error: Error opening shm /lttng-ust-wait-5 (in get_wait_shm() at lttng-ust-comm.c:958)
  libust[24877/24878]: Error: Error opening shm /lttng-ust-wait-5 (in get_wait_shm() at lttng-ust-comm.c:958)
  Error: Couldn't connect to the Mir display server
  Error: main: Could not initialize canvas
  [1445336019.182277] <ERROR> MirConnectionAPI: Caught exception at client library boundary (in release): /build/buildd/mir-0.13.3+15.04.20150617/src/client/rpc/stream_socket_transport.cpp(168): Throw in function virtual void mir::client::rpc::StreamSocketTransport::send_message(const std::vector<unsigned char>&, const std::vector<mir::Fd>&)
  Dynamic exception type: N5boost16exception_detail10clone_implINS0_19error_info_injectorIN3mir25socket_disconnected_errorEEEEE
  std::exception::what: Failed to send message to server: Broken pipe
  32, "Broken pipe"
  libust[24922/24923]: Error: Error opening shm /lttng-ust-wait-5 (in get_wait_shm() at lttng-ust-comm.c:958)
  libust[24922/24923]: Error: Error opening shm /lttng-ust-wait-5 (in get_wait_shm() at lttng-ust-comm.c:958)
  libust[24922/24924]: Error: Error opening shm /lttng-ust-wait-5-32011 (in get_wait_shm() at lttng-ust-comm.c:958)
  libust[24922/24924]: Error: Error opening shm /lttng-ust-wait-5-32011 (in get_wait_shm() at lttng-ust-comm.c:958)
  Error: Couldn't connect to the Mir display server
  Error: main: Could not initialize canvas
  [1445336029.784398] <ERROR> MirConnectionAPI: Caught exception at client library boundary (in release): /build/buildd/mir-0.13.3+15.04.20150617/src/client/rpc/stream_socket_transport.cpp(168): Throw in function virtual void mir::client::rpc::StreamSocketTransport::send_message(const std::vector<unsigned char>&, const std::vector<mir::Fd>&)
  Dynamic exception type: N5boost16exception_detail10clone_implINS0_19error_info_injectorIN3mir25socket_disconnected_errorEEEEE
  std::exception::what: Failed to send message to server: Broken pipe
  32, "Broken pipe"

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