Bug 371010

Summary:	Position Marker is gone/invisible
Product:	[Applications] marble	Reporter:	Tom Hardy <rhardy702>
Component:	general	Assignee:	marble-bugs
Status:	CONFIRMED ---
Severity:	normal	CC:	cbs228
Priority:	NOR
Version First Reported In:	2.0 (KDE Applications 16.08)
Target Milestone:	---
Platform:	openSUSE
OS:	Linux
Latest Commit:		Version Fixed/Implemented In:
Sentry Crash Report:

Description Tom Hardy 2016-10-17 17:11:38 UTC

The summary pretty much says it.  I don't have a position marker using Marble 2.01 from Suse Tumbleweed rpm's, plasma 5.8.0, frameworks 5.26.0, QT 5.7.0.

This situation has obtained for a couple of months of relatively frequent Tumbleweed updates identified this way...

2016-07-28 15:57:23|install|marble-kde|16.04.3-1.1|x86_64|
2016-08-10 21:57:20|install|marble-kde|16.04.3-2.1|x86_64|
2016-09-03 10:11:38|install|marble-kde|16.08.0-1.1|x86_64|
2016-09-09 19:22:44|install|marble-kde|16.08.0-1.2|x86_64|
2016-09-16 15:57:36|install|marble-kde|16.08.1-1.1|x86_64|
2016-10-12 23:10:56|install|marble-kde|16.08.1-1.2|x86_64|

It possibly started with 16.08.

Possible relevance--I am getting gps from an Android phone using application 'GPS2NET',
and on the Linux box,' adb forward tcp:6000 tcp:6000', followed by 'gpsd -n tcp://localhost:6000'.
xgps doesn't show a satellite selected, and doesn't show EPX, EPY, EPS, EPD.  The lack isn't new, though.

Emitted sentences:  GPGSA, GNGSA, BDGSA, GPRMC, GPGSV, GLGSV, GPGGA, GPVTG, GNGNS

That's all for now.  Can anyone confirm the lack of a position marker?


Reproducible: Always




By the way, tracks became narrow white lines, practically invisible, at the same time.  Is that expected?  Invisible lines aren't very useful.

Comment 1 Tom Hardy 2016-12-22 05:02:57 UTC

I just noticed the position marker is visible at zoom levels 5 and below.  It is also visible at zoom level 6 if positioned well below the crosshairs; that is, below about the 3/8th of the screen height.

Comment 2 C Stagner 2017-12-30 23:01:54 UTC

This bug also affects me. The position indicator does not render correctly when the map is zoomed in more than a few ticks. It does not matter if the position is sourced from GPS, Qt Positioning Location, or Current Route. Both marble (KDE) and marble-qt are affected. While the marble package from Ubuntu 16.04 (deb version 4:15.12.3-0ubuntu2) was OK, the marble package from Ubuntu 17.10 (deb version 4:17.04.3-0ubuntu1) is bugged.

I have bisected the history and found the offending commit: d03d2483bae, "Fix bug that the position marker was showing up on the..." Reverting this commit on top of v17.11.80 and recompiling fixes the bug.

I live in the northwestern hemisphere: i.e., positive latitudes and negative longitudes. It could be that the changes introduced in the above commit do some math which doesn't quite work out world-wide.

Comment 3 C Stagner 2018-04-01 01:30:12 UTC

Changing to "confirmed" as bug affects more than one user.

A fix is proposed in https://phabricator.kde.org/D11853