Hi David,

I applied the change set with Scratch, and the problem remains, it is 
strange right ?

Any way, as workaround we are going to change the Window Manager from 
Compiz to Metacity on these machines. Using Metacity as Window Manager 
this problem is resolved.

Thanks a lot for your workaround, and I agree with you that the 
definitve solution should be done on Squeak-vm.


Regards,

Gustavo.

On 03/20/2014 12:27 AM, David T. Lewis wrote:
>
>
>
>
> Hi Gustavo,
>
> The problem with full screen on/off looks like it may be caused by
> the X11 window manager in Ubuntu, and I do not know how long it may
> take to resolve this in the Squeak VM or in Ubuntu. I see from your
> explanation here that the problem may be affecting children in the
> Plan Ceibal project already, so it would be good to find a solution
> soon.
>
> I think that I have found a workaround for the problem that may help.
> I am attaching a change set that you can file in to a Squeak image,
> either the Squeak 3.9 image that you mentioned, or any other recent
> Squeak 4.5 image. This change uses one of the plugins in the squeak-vm
> package on Ubuntu, and it will force a reconnection to the X11 display
> after the Squeak window returns from full screen mode.
>
> Can you please try loading this change set into Squeak, and testing
> it on an MG3 laptop with Ubuntu 12.04?
>
> I have not tested this yet with Scratch, but if it works on Squeak
> with Ubuntu 12.04, then it will probably work with Scratch also.
>
> This is not a real solution to the problem, but if it works on the
> laptops for Plan Ciebal then maybe it will help until we are able to
> fix the real problem.
>
> Thanks,
>
> Dave
>
>
> On Mon, Mar 17, 2014 at 06:11:44PM -0300, Gustavo Duarte wrote:
>> Hi,
>>
>> Overview
>> ========
>>
>> I would like make a brief overview of the situation.
>>
>> In my case, this problem is happening on laptos Magalahes model MG3,
>> these kind of the machines are manufactured by a Portuguese company,
>> http://www.jp-ik.com/, focuses on provide laptop for children.
>>
>> Here in Uruguay there is a country wide Educational Project, called
>> "Plan Ceibal"[1] [2]. Thousand of these machines were distributed to
>> children on the schools around all the country.
>>
>> Until last year 2013, this machines comes with Ubnutu 10.04 installed
>> and Squeak was working like a charm.
>>
>> Currently a migration to Ubuntu 12.04 is on deployment stage, and some
>> of the remaining issues is this (Squeak).
>>
>> More info about the HW of this Machine [3]
>>
>>
>> Research results so far:
>> ==========================
>>
>> I tried get more information, calling fullScreenON and Off from
>> Worksapce unsessfully, same behavior happened, but no additional data
>> were printed out.
>>
>>
>> Now, I will take the another approach, related with a comment did by Tim
>> Rowledge on the old thread.
>>
>> <<
>> "I?d say that strongly suggests a problem in the code setting the screen
>> mode; you?ll find it (for unix) in platforms/unix/vm-display-
>> X11/sqUnixX11.c at the function  display_ioSetFullScreen(sqInt
>> fullScreen). Since it works on many unices and has for a long time I
>> imagine it means some problem with the specific machine?s display driver
>> code. That could be all sorts of fun to solve. At the very least you?ll
>> need to find an X expert, which is not me."
>>>>
>>
>>
>> Taking in account, i have never developed on Squeak, my plan would be like:
>>
>> 1) Add debugging cide like "printf" to sqUnix11.c to may debug, and
>> check if there where the problem
>>
>> 2) Compile Squeak - VM from sourece code, modified.
>>
>> 3) Run Squeak vm with clean Squeak image.
>>
>> 4) See the output of debugging code.
>>
>> 5) With these new clues, i'll ask help to a X expert.
>>
>> What do you think, that sounds reasonable ?
>>
>> Is another easier approach ?
>>
>> Thanks in advance.
>>
>>
>> Gustavo.
>>
>>
>> [1] http://www.ceibal.edu.uy
>> [2] http://en.wikipedia.org/wiki/Ceibal_project
>> [3]
>> http://www.ceibal.edu.uy/art%C3%ADculo/noticias/consultas/hardwaremagallanes3
>>
>>
>> On 03/17/2014 01:58 PM, gettimothy wrote:
>>> No Eeks!, flurps, oopsies, fscks or oy's here.
>>>
>>> Full screen works just dandy with dual monitors.
>>> Platform is a workstation, NVidia GEForce, Slackware Linux.
>>>
>>> Image
>>> -----
>>>
>>> Squeak4.5
>>> latest update: #13680
>>> Current Change Set: dude
>>> Image format 6505 (32 bit)
>>>
>>> Virtual Machine
>>> ---------------
>>> /home/wm/usr/bin/coglinux/lib/squeak/4.0-2749/squeak
>>> Croquet Closure Cog VM [CoInterpreter VMMaker.oscog-eem.302]
>>> Unix built on Jul 15 2013 15:49:06 Compiler: 4.1.2 20080704 (Red Hat
>>> 4.1.2-48)
>>> platform sources revision VM: r2749
>>> http://www.squeakvm.org/svn/squeak/branches/Cog Plugins: r2545
>>> http://squeakvm.org/svn/squeak/trunk/platforms/Cross/plugins
>>> CoInterpreter VMMaker.oscog-eem.302 uuid:
>>> 2ac39432-ac54-4584-964e-b129c90792f4 Jul 15 2013
>>> StackToRegisterMappingCogit VMMaker.oscog-eem.302 uuid:
>>> 2ac39432-ac54-4584-964e-b129c90792f4 Jul 15 2013
>>>
>>>
>>>
>>>
>>>
>>>