Bug 69818 - Empty Sky on PPC
Summary: Empty Sky on PPC
Status: RESOLVED WORKSFORME
Alias: None
Product: kstars
Classification: Applications
Component: general (show other bugs)
Version: unspecified
Platform: Debian testing Linux
: NOR normal
Target Milestone: ---
Assignee: kstars
URL:
Keywords:
Depends on:
Blocks:
 
Reported: 2003-12-07 23:03 UTC by Dominique Devriese
Modified: 2008-01-18 18:38 UTC (History)
1 user (show)

See Also:
Latest Commit:
Version Fixed In:
Sentry Crash Report:


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Description Dominique Devriese 2003-12-07 23:03:07 UTC
Version:            (using KDE KDE 3.1.4)
Installed from:    Debian testing/unstable Packages

How's that for a bug title ? ;)

Anyway, this is basically a forward of Debian bug report #219648: http://bugs.debian.org/cgi-bin/bugreport.cgi?bug=219648.  I hope you know how to find the cause, thanks.  Of course, please do not forget to CC the original reporter if you ask for more information.

cheers
domi

From: Matthias Urlichs <smurf@debian.org>
To: Debian Bug Tracking System <submit@bugs.debian.org>
Subject: kstars: no display on PPC
Date: Fri, 07 Nov 2003 21:56:45 +0100


Package: kstars
Version: 4:3.1.4-1
Severity: important

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Hash: SHA1

kstars shows an empty sky. The lower-right corner says

        2147483648'-2147483648"

which looks rather suspicious. Big/little-endian problem? (It works on
i386... I don't have any other big-endian archs to test on.)

- -- System Information:
Debian Release: testing/unstable
Architecture: powerpc
Kernel: Linux linux 2.6.0-test7-smurf5 #61 Fri Oct 10 01:13:52 CEST 2003 ppc
Locale: LANG=en_US.utf8, LC_CTYPE=en_US.utf8

Versions of packages kstars depends on:
ii  kdelibs4                      4:3.1.4-2  KDE core libraries
ii  libart-2.0-2                  2.3.16-1   Library of functions for 2D graphi
ii  libaudio2                     1.6-6      The Network Audio System (NAS). (s
ii  libc6                         2.3.2-9    GNU C Library: Shared libraries an
ii  libfam0c102                   2.6.10-4   client library to control the FAM 
ii  libfontconfig1                2.2.1-8    generic font configuration library
ii  libfreetype6                  2.1.5-3    FreeType 2 font engine, shared lib
ii  libgcc1                       1:3.3.2-3  GCC support library
ii  libpng12-0                    1.2.5.0-4  PNG library - runtime
ii  libqt3c102-mt                 3:3.2.1-6  Qt GUI Library (Threaded runtime v
ii  libstdc++5                    1:3.3.2-3  The GNU Standard C++ Library v3
ii  libxcursor1                   1.0.2-2    X Cursor management library
ii  libxft2                       2.1.2-4    FreeType-based font drawing librar
ii  libxrender1                   0.8.3-4    X Rendering Extension client libra
ii  xlibmesa3-gl [libgl1]         4.2.1-13   Mesa 3D graphics library [XFree86]
ii  xlibs                         4.2.1-13   X Window System client libraries
ii  zlib1g                        1:1.1.4-16 compression library - runtime
Comment 1 kstars 2003-12-08 22:36:27 UTC
Subject: Re:  New: Empty Sky on PPC

Hello,

We generally prefer bug reports against more recent development code, since 
this problem may have already been fixed.  However, since you describe a 
pretty serious problem, I am still very interested in tracking this down.

We've had similar bug reports (e.g., #64827, #67299) on i386, and I know of 
people successfully using KStars on PPC, so I don't think this is an endian 
issue.  In past cases, the behavior you are describing usually results from 
the focus position getting assigned an undefined position in the sky.

Do you get this problem only under certain circumstances, or all the time?  
What happens if you try to change your geographic location, or change the 
focus position with one of the n,s,e,w,z,0-9 keys ?  If you quit KStars while 
it is in this undefined state, what do the "FocusRA" and "FocusDec" entries 
look like in your $KDEHOME/share/config/kstarsrc file?  If they are nonsense, 
what happens when you delete/rename that file and start again?

Thanks in advance for your continued help,
Jason

On Sunday 07 December 2003 05:03 pm, you wrote:
> kstars shows an empty sky. The lower-right corner says
>
>         2147483648'-2147483648"
>
> which looks rather suspicious. Big/little-endian problem? (It works on
> i386... I don't have any other big-endian archs to test on.)
>

Comment 2 kstars 2003-12-09 19:49:33 UTC
Subject: Re:  New: Empty Sky on PPC

Hello,

> Sorry -- I don't know where uptodate snapshots for Debian/PPC are
> available and I don't have the resources to compile KDE myself --
> not enough disk space. :-/
>
FYI, you can compile latest KStars without compiling all of KDE...if 
interested, I can tell you how.
 
> All the time.
>
Bummer :(

> nsew and geo don't change anything.
>
> 0-9 return KStars to normal operation.  Thank you.
>
That's pretty interesting.  Almost as if it can focus on a named object, but 
not on blank parts fo the sky.  What happens if you do "Ctrl+F" to bring up 
the Find Object window when it is in the undefined state, and select a named 
object from the list?  Does that also fix it?  Once it is "fixed", does it 
remain ok, or does it ever go back to the undefined state?

When you get "nan" for FocusRA and FocusDec, are any of the other values in 
kstarsrc obviously nonsense?

> So it seems that KStars just gets confused about whatever it's supposed
> to display on startup.
>
Yeah, looks that way.  I'm at a loss trying to understand what it's problem 
is, but I'll think about it a while.

> (On a totally unrelated note, why does the label of _every_ toggle
> button include the word 'toggle'? It takes up too much space on the
> toolbar.)
>
An untested usability issue; none of us on the kstars team put text on the 
toolbar buttons, so we didn't appreciate the problem.  Thanks for the report; 
if you want to make sure we get it fixed after the strings freeze thaws, 
please file a report at bugs.kde.org.

thanks for the further information; I may contact you again if/when I think of 
something else to try.

regards,
Jason
Comment 3 Matthias Urlichs 2003-12-09 20:38:11 UTC
Subject: Re:  New: Empty Sky on PPC

Hi Jason,

> FYI, you can compile latest KStars without compiling all of KDE...if 
> interested, I can tell you how.
>  
Please do.

> That's pretty interesting.  Almost as if it can focus on a named object, but 
> not on blank parts fo the sky.  What happens if you do "Ctrl+F" to bring up 
> the Find Object window when it is in the undefined state, and select a named 
> object from the list?  Does that also fix it?  Once it is "fixed", does it 
> remain ok, or does it ever go back to the undefined state?
> 
^f does the same as 0..9, i.e. fixes the problem.

> When you get "nan" for FocusRA and FocusDec, are any of the other values in 
> kstarsrc obviously nonsense?
> 
No (I diffed it).

Interestingly, when I start kstars without a config file I do get the
messed-up display, but the initial kstarsrc is saved with reasonable
values: directly quitting and re-starting makes the error go away. It
is rewritten with "nan" if I actually try to move around.

Comment 4 Jasem Mutlaq 2005-06-02 22:44:11 UTC
It's almost been a year and a half since this bug was reported. Do you experience the same issue now on KDE 3.4 or HEAD?
Comment 5 Dominique Devriese 2005-06-03 12:44:31 UTC
Jasem Mutlaq writes:

> It's almost been a year and a half since this bug was reported. Do
> you experience the same issue now on KDE 3.4 or HEAD?


As you can see in the bug report, you shouldn't be asking me this, but
the person who reported it as a debian bug ( address is in the bug
report )..

cheers
domi
Comment 6 kstars 2008-01-18 18:38:27 UTC
Closing ancient bug "WORKSFORME"