V4.8 - Show Tides and Show Current

[Didier B]

Since I use the updated version 4.8.0 of OpenCPN, the 'Show Tides' and 'Show Current' buttons (in the tool bar) doesn't work correctly. The map Symbols are HUGE, and the graph doesn't pop up when right-clicking the symbol. PS1 - I can't attach a photo, neither activate any BB code, though BB code is supposed to be 'on' ! Any clue ? PS2 - my configuration is : RPi3, OpenPlotter 0.16.0 beta, OpenCPN 4.8.0 PS3 - How can I insert a (CR+LF) ?

[Andreas29]

Hi,

had the same prob. One of the latest update of the pi fixed it.

Did you try sudo apt-get update and then sudo apt-get dist-upgrade after using oc 4.8.0?

Regards

Andreas

[Didier B]

A picture to illustrate my previous post in this thread

[Andreas29]

Hi,

Didier, as I wrote, I had the same problem. But after I made an upgrade of the raspian all was fine and it works again like a charm.

I run oc on a pi2B

Regards

Andreas

[Didier B]

Originally Posted by Andreas29

Hi,

had the same prob. One of the latest update of the pi fixed it.

Did you try sudo apt-get update and then sudo apt-get dist-upgrade after using oc 4.8.0?

Regards

Andreas

Yes Andreas, I've just done that (after a backup !) but it didn't solve the case ! Which version or raspbian do you use ? My OpenPlotter is baked on Jessie...

[Andreas29]

Hi,

raspbian jessie, Kernel 4.9.35-v7+

First I tried to install a new harmonix file -> no sucess
Then the update -> first no sucess
Then I made an update (the sudo apt-get update and sudo apt-get dist-upgrade thing) at the 10th oktober and since then it works

I had exactly the same problem like you. Only the big tidal bars and when right click nothing or a corrupted Windows opend.

Regards

Andreas

[Didier B]

I suspect a difference in repository.
I am using OpenPlotter 0.16.0 and the issue may be in the ppa...
What distribution are you using Andreas ?

[Andreas29]

Hi,

Didier, I attach a pic, that shows my sources.list-file.

I use the repo from raspian and the repo wich is recommended for oc in Debian enviroment.

I have oc locally build but before that I used the ready build packs from the repo and they works good too (except the windbarb-prob in gridoverlay).

Hope this helps.

Regards

Andreas

[Didier B]

Thanks Andreas29,
I got the answer on the OpenPlotter support forum : OpenMarine - OpenPlotter
I copy/paste it here :
"The issue is that the monitor screen setting is not found. Change the automatic setting to manual. Measure the With of your screen and put this in the manual setting."
And then every thing was OK (after a reboot).

[seandepagnier]

This problem is still not fixed. If automatic screen detection is used on the raspberry pi, then tides/currents are still broken since commit 2b2224e62798c5f5f71589234fd604fadad9612b

[nohal]

Sean...
Such a commit does not seem to exist in any of the source trees I can see.

$ git describe 2b2224e62798c5f5f71589234fd604fadad9612b
fatal: 2b2224e62798c5f5f71589234fd604fadad9612b is not a valid 'commit' object

Pavel

[seandepagnier]

$ git describe 2b2224e62798c5f5f71589234fd604fadad9612b
v4.0.0-3176-g2b2224e

git show 2b2224e62798c5f5f71589234fd604fadad9612b
commit 2b2224e62798c5f5f71589234fd604fadad9612b
Author: David Register <bdbcat@yahoo.com>
Date:   Thu Jul 20 23:28:14 2017 -0400
 
    Improve monitor size detection logic on GTK. (FS#2193)

I think I fixed the problem, and strangely it only affects some raspberry.. anyway, this seems to work:

diff --git a/src/OCPNPlatform.cpp b/src/OCPNPlatform.cpp
index 7793d59..ed4249b 100644
--- a/src/OCPNPlatform.cpp
+++ b/src/OCPNPlatform.cpp
@@ -1588,7 +1588,9 @@ double  OCPNPlatform::GetDisplaySizeMM()
     
 #ifdef __WXGTK__
     GdkScreen *screen = gdk_screen_get_default();
-    ret = (double)gdk_screen_get_monitor_width_mm(screen, 0);
+    double gdk_monitor_mm = gdk_screen_get_monitor_width_mm(screen, 0);
+    if(gdk_monitor_mm > 0) // if gdk detects a valid screen width (returns -1 on raspberry pi)
+        ret = gdk_monitor_mm;
 #endif

Unfortunately there is similar logic in the grib plugin. Maybe the plugin api could include support to query the screen size to eliminate it.

[nohal]

Strange enough, in the upstream repo (and mine), that commit is here: https://github.com/OpenCPN/OpenCPN/c...e7ffecbee94f8f

Anyway, the current logic is broken on some RPis, no doubt, and your change can only make it better.

The final fix for the Grib plugin is already submitted in https://github.com/OpenCPN/OpenCPN/pull/893

Pavel

[rgleason]

Added for Sean.
https://opencpn.org/flyspray/index.p...s&task_id=2309