[K12OSN] Re: OT: Teachertool snapshots not working
robark at gmail.com
Sat Jan 10 21:33:09 UTC 2009
On Sat, Jan 10, 2009 at 7:32 AM, David Hopkins <dahopkins429 at gmail.com> wrote:
>> Usually if the snapshot part does not work in FL_TT, the Monitor/Control
>> portion does not work either. Have you tried these by chance? If you
>> like you can try installing this via the rpm's I made. I have never
>> gotten any feedback on any X86_64 try outs,though.The rpm's do all the
>> permissions voodoo in the install so it ends up being pretty simple.
>> If you'd like to give it a try here is the url:
> Monitor/Control/Broadcasts/Spotlight works perfectly.
if monitor/control is working then check to see you have vncsnapshot
and imagemagick (man convert) . What I do is first grab the full
screen image with vncsnapshot then I resize the image with convert.
here is the code that does it
first I check to see the client is up with ping (if success then I
take the snapshot)
/usr/bin/vncsnapshot -passwd /opt/ltsp/i386/root/.vnc/passwd
-encodings hextile -allowblank ws250.ltsp:0
btw I create a folder in /tmp to store the shots
these lines are for version 0.62
>> Also are you sure the clients are getting correct hostnames?,,
>> ws001 , ws002 ?
> The only thin clients where using hostname in a shell at the client
> returns the name are those with dhcp reservations defined. But, as
> mentioned, on the i386 system, snapshots work for all thin clients
> regardless of whether they know their hostname. Ping does work
> properly. e.g. ping ws001.ltsp works even though ws001.ltsp doesn't
> know its hostname so dns is working properly in this respect. After
> looking at the source code I think I'll go in sometime this weekend
> and see if I can just use vncsnapshot manually from a shell,
> replicating the command that FL_TT is using.
> Dave Hopkins
> Newark Charter School
> Newark Delaware
> K12OSN mailing list
> K12OSN at redhat.com
> For more info see <http://www.k12os.org>
Eric Hamber Secondary, Vancouver, Canada
C++ GUI tutorial http://www3.telus.net/public/robark/
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