https://bugs.kde.org/show_bug.cgi?id=478616
--- Comment #1 from Stefan Hoffmeister <stefan.hoffmeis...@econos.de> ---
I am reporting this against kwin because of the implementation in `int
LogindSession::openRestricted(const QString &fileName)` with the origin of the
log entry evidently being
```
const QDBusMessage reply = QDBusConnection::systemBus().call(message);
if (reply.type() == QDBusMessage::ErrorMessage) {
qCWarning(KWIN_CORE, "Failed to open %s device (%s)",
qPrintable(fileName), qPrintable(reply.errorMessage()));
return -1;
}
```
>From context it is clear that the _device_ exists (10 lines earlier, the `stat`
succeeds).
>From a user perspective, it may be beneficial to establish
* a _shorter_ timeout on the dbus call
* a mechanism for exponential back-off retries, capped to, say 30 seconds in
kwin_core, in trying to acquire the device
but I have no idea whether that is feasible at all.
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