<div dir="ltr">Hi James, Thanks a ton for the detailed response. I will keep working on it and try to implement the fixes suggested by you. Best Regards Smrann Arora </div><img src="https://my-email-signature.link/signature.gif?u=968470&e=343322043&v=d7a7e8c8b8c131e6067eec9c4235f4cb52bf8d037eb5ff0c54824ee3736a4f62" alt="" width="0" height="0" style="width:2px;max-height:0;overflow:hidden"> <div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Apr 2, 2023 at 3:57 PM James Cameron <<a href="mailto:quozl@laptop.org">quozl@laptop.org</a>> wrote: </div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">G'day Simrann, I'll reply in context below, please scroll down. You wrote: > While performing the testing on Sugar platform, almost all the > activities 'failed to load' and were having erratic > behavior. However, when I restarted Sugar, some of them started > working fine, but after sometime again that erratic behavior showed > up. Yes, you may wish to investigate this. When the shell starts an activity, a timer is initiated. If the activity has not started when the timer expires, the shell declares "failed to start". An activity that is slow to start may yet appear after this message. Raspberry Pi can be very slow, depending on the performance (i.e. price) of the microSD or SD card being used. You can measure performance using "sudo apt install pv" and "sudo pv /dev/mmcblk0 > /dev/null". My test system, a Raspberry Pi Model B+ with an old 32GB SD card, shows 20 MiB/s. On first start, GStreamer populates a .cache/gstreamer-1.0/registry.armv7l.bin file, Python must load all modules, and Calculate import of matplotlib iterates over the available styles. All this takes time, and may cause the shell to timeout and report "failed to start". Graphics updates can also be very slow. During activity launch a pulsing icon in the shell process competes with the starting of the activity. Simultaneous processes making demands of the operating system and hardware cause mutual slowdown. You can see this using top(1) over ssh(1). sugar:src/jarabe/view/launcher.py sets a default launcher interval of 100 milliseconds. On particularly slow systems we have set this to 500 milliseconds using gsettings. You might try that, and if it fixes the problem then you know it is the pulsing icon to blame. ``` gsettings set org.sugarlabs.desktop launcher-interval 1000 ``` The pulsing icon should look much slower. Perhaps Sugar should detect Raspberry Pi and set it lower by default. You can look through .sugar/default/logs for previous sessions, using stat(1) to compare file birth (activity start), modify (last output), and change (activity stop). This may show you that some activities did actually start later, but were not visible because you had gone on to start something else. > Also, I did try installing other activities by using the following > command and had also listed the error in my testing report shared > earlier with you: > > sudo apt install sugar-{abacus, > [...] That command has been removed from my instructions. It was out of date. Therefore the error is of no concern. > As far as your second point is concerned, by Browse -> Activities > (the library) you mean that installing activities via the Sugar > Store ([1] <a href="https://activities.sugarlabs.org/en-US/sugar/" rel="noreferrer" target="_blank">https://activities.sugarlabs.org/en-US/sugar/</a>) right? I > will try that as well going further. No, that's for Python 2 activities. Debian, Ubuntu, Fedora, and Raspberry Pi OS no longer provide Python 2. For Python 3 activities the library is linked from Browse default page to <a href="https://v4.activities.sugarlabs.org" rel="noreferrer" target="_blank">https://v4.activities.sugarlabs.org</a> The library is much smaller, because many activities have not been released since the library was opened. > I have also shared my GSoC proposal on mail and sugar-devel mailing > list, I would request your suggestions and valuable feedback for > improving the same. That's really up to your mentors. > Thanks a lot > Simrann Arora </blockquote></div>