I've been hitting this bug regularly and I agree its pretty annoying. The synergy X11 backend claims to only make Xlib calls from the main thread:
// NOTE -- the X display is shared among several objects but is owned // by the CXWindowsScreen. Xlib is not reentrant so we must ensure // that no two objects can simultaneously call Xlib with the display. // this is easy since we only make X11 calls from the main thread. This is not true, for example we call Xflush() from multiple threads: synergyc(CXWindowsEventQueueBuffer::flush()+0x55) synergyc(CXWindowsEventQueueBuffer::waitForEvent(double)+0x60) synergyc(CEventQueue::getEvent(CEvent&, double)+0x157) synergyc synergyc(main+0x13d) and: synergyc(CXWindowsEventQueueBuffer::flush()+0x55) synergyc(CXWindowsEventQueueBuffer::addEvent(unsigned int)+0x82) synergyc(CEventQueue::addEvent(CEvent const&)+0x72) synergyc(CTCPSocket::sendEvent(unsigned int)+0x55) synergyc(CTCPSocket::serviceConnected(ISocketMultiplexerJob*, bool, bool, bool)+0x16f) synergyc(TSocketMultiplexerMethodJob<CTCPSocket>::run(bool, bool, bool)+0x5b) synergyc(CSocketMultiplexer::serviceThread(void*)+0x2d1) synergyc(TMethodJob<CSocketMultiplexer>::run()+0x2a) synergyc(CThread::threadFunc(void*)+0x76) synergyc(CArchMultithreadPosix::doThreadFunc(CArchThreadImpl*)+0x50) synergyc(CArchMultithreadPosix::threadFunc(void*)+0x42) /lib/tls/i686/cmov/libpthread.so.0 /lib/tls/i686/cmov/libc.so.6(clone+0x5e) I'm not an Xlib expert, but it appears that we need to call XInitThreads() if we multiple threads call into Xlib. The following patch does that, and I haven't seen the fail with it applied in a few hours (usually fails in 30 minutes). ** Attachment added: "synergy_XInitThreads.patch" http://launchpadlibrarian.net/21234586/synergy_XInitThreads.patch -- synergyc dies with xcb_lock.c assertion failed https://bugs.launchpad.net/bugs/299152 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
