$ kontact
[8645:8651:0311/181928.916988:ERROR:command_buffer_proxy_impl.cc(141)] ContextResult::kTransientFailure: Failed to send GpuChannelMsg_CreateCommandBuffer.
quoted-printable codec lies about it's mEncodedSizeFor()
qt.qpa.xcb: QXcbConnection: XCB error: 3 (BadWindow), sequence: 2644, resource id: 10494664, major code: 40 (TranslateCoords), minor code: 0
KCrash: Application 'kontact' crashing...
KCrash: Attempting to start /usr/libexec/kf5/drkonqi
QSocketNotifier: Invalid socket 8 and type 'Read', disabling...
QSocketNotifier: Invalid socket 9 and type 'Read', disabling...

[2]+  Остановлен    kontact
[warn] epoll_wait: Неправильный дескриптор файла
[warn] epoll_wait: Неправильный дескриптор файла
[warn] epoll_wait: Неправильный дескриптор файла
[2]+  Выход 253          kontact