[K12OSN] Repost: KStars downloaded images blank

Terrell Prude', Jr. microman at cmosnetworks.com
Sun Jun 13 17:21:08 UTC 2004

I have replicated your results w/ K12LTSP 3.1.1; KStars doesn't itself 
show anything but blackness in the "image" window, but I can save it and 
view it in, say, Eye of Gnome.  I wanted to try it w/o any updates to 
3.1.2, just in case that was it.

I've also tried it after updating to 3.1.2 (apt-get update, apt-get 
upgrade).  My results now are less positive, because now KStars dies 
with ASSERT statements in qvaluelist.h (some Qt header).

Have you reported what you've found to the KStars maintaner(s)?


Terrell Prude', Jr. wrote:

> I'll try it out this weekend and let you know what I find; I've got a 
> server box handy that I can use for this purpose.  I've just been so 
> swamped this last week, otherwise I'd have this done for you by now.
> --TP
> Robert Arkiletian wrote:
>> ***** Has anyone gotten KStars show image to work on a client ? *******
>> Update:
>> I stuck in a S3 virge gx2 and the same problem persists. I asked a 
>> friend about this and he asked a friend and he replied:
>> ===========================================
>> - This sort of problem is often due to inadequate support for graphics
>> acceleration.  KStars as provided by Debian is dynamically linked to the
>> GL libraries.  Perhaps he should check what package he's using to 
>> provide
>> libGL on his server; in an LTSP setup, something software-only like 
>> mesag3
>> might be worth trying.
>> - FWIW, I tried running KStars through an SSH tunnel (a possibly similar
>> scenario) and did observe the problem described (but with the DSS query
>> feature - a star with the SEDS option wasn't immediately handy): image
>> downloaded but only a blank image-viewer window appearing.  At the time
>> the image-viewer window appeared I got the following errors on the
>> console:
>> kstars: WARNING: KDE detected X Error: BadAccess (attempt to access 
>> private resource denied) \x0a
>>  Major opcode:  \x92
>> kstars: WARNING: KDE detected X Error: BadShmSeg (invalid shared 
>> segment parameter) \xab
>>  Major opcode:  \x92
>> kstars: WARNING: KDE detected X Error: BadShmSeg (invalid shared 
>> segment parameter) \xab
>>  Major opcode:  \x92
>> ============================================
>> I can't figure out why KStars would need opengl support when it's 
>> only displaying jpg's and gif's.
>> ***** Has anyone gotten KStars show image to work on a client ? *******
>> Robert Arkiletian
>> On Friday 04 June 2004 11:45 pm, Robert Arkiletian wrote:
>>> Well all 30 of them use nvidia riva 128's but I do have a S3 trio64+ 
>>> and an
>>> old matrox sitting around. Thanks for the idea Terrell. I will pop 
>>> out an
>>> nvidia card on one of them and test it out on monday. But I doubt it 
>>> will
>>> make any difference because if I SAVE the image with KStars I can 
>>> then view
>>> it with any image viewer (gimp, eog, web browsers). It's a real 
>>> showstopper
>>> if you have to save and then open the image with another viewer 
>>> though. I
>>> still think it has something to do with kdeinit and/or the XF86config
>>> settings in lts.conf. What I am looking for from this listserve is just
>>> some people to take a couple of seconds and try KStars from a client 
>>> and
>>> see if they experience the same problem.
>>> If they do, then I'm going to contact the developers and see if I can
>>> report it as a bug.
>>> Thanks for your reply Terrell, I appreciate it.
>>> Robert Arkiletian
>>> Eric Hamber Secondary
>>> On Friday 04 June 2004 7:15 pm, Terrell Prude', Jr. wrote:
>>>> Do you by any chance have a thin client with any other type of video
>>>> card?  You're right; if they're just GIFs and JPEGs, they should 
>>>> display
>>>> just fine.  Also, if you go Web surfing on your clients, do the 
>>>> GIFs and
>>>> JPEGs display properly?  When you save these images from within 
>>>> KStars,
>>>> can you view them with, say, Kuickshow, Electric Eyes, or The GIMP on
>>>> your clients?
>>>> --TP
>>>> Robert Arkiletian wrote:
>>>>> Right clicking on a heavenly body in KStars will usually bring up the
>>>>> "Show SEDS image" option. The image downloads but it will not display
>>>>> with KStars. The image window is blank.
>>>>> I can save the image okay, though. This problem only exists on my
>>>>> clients. They are all nvidia riva 128's. However, on the server which
>>>>> has an on board ATI rage pro chip the images appear properly
>>>>> (regardless if I log in as root or a user). However, on the clients,
>>>>> even as root I do not get an image (just black space in the image
>>>>> window)
>>>>> So it's not a permission problem. I figure it must be a problem with
>>>>> XF86Config for the clients and server being different.
>>>>> I have enabled 24 bit color (as the riva 128 can't do 16 with xfree86
>>>>> 4.3) and set XSERVER = auto in lts.conf. I even tried XSERVER = 
>>>>> nv, no
>>>>> luck. The damn images are just gif's and jpg's. Any video card should
>>>>> be able to display them.
>>>>> I looked at top (interactive A option) and I found the program was
>>>>> ----------kdeinit------------ that was trying to display the images.
>>>>> I don't know anything about kdeinit but it must somehow call an image
>>>>> viewing mechanism. Somehow the client xserver is not able to display
>>>>> the downloaded image with kdeinit.
>>>>> Can someone try to view these celestial SEDS images on their 
>>>>> clients and
>>>>> confirm this behavior??? KStars is an awsome program worth the 
>>>>> effort.
>>>>> Do I need any modules loaded with Xfree86? Anyone have any ideas to
>>>>> solve this issue.
>>>>> BTW I'm using k12ltsp 3.1.2
>>>>> Robert Arkiletian
>>>>> Eric Hamber Secondary

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