Thanks for all the feedback. Will do a new release soon. Gonzalo
On Thu, May 14, 2015 at 4:01 AM, James Cameron <qu...@laptop.org> wrote: > The problem followed the SD card. > > Booting from NAND Flash on two different systems, the > GStreamer-CRITICAL warnings and related silence occur roughly one out > of every 30 starts from journal. > > So there is a race condition of some sort, but it affects some laptops > more than others, because of storage I/O timing. > > It might have been there already, so unless you can reproduce it, > don't worry about it. > > On Thu, May 14, 2015 at 12:52:37PM +1000, James Cameron wrote: > > Thanks. Applied both. Continue to show segmentation faults, the > > GStreamer-CRITICAL warnings, a lock up CPU loop (not fixed by stop in > > frame), and rarely: > > > > *** glibc detected *** python2: malloc(): memory corruption: 0x0a2dcb68 > *** > > Terminated by signal 11, pid 2688 data (None, <open file '<fdopen>', > mode 'w' at 0x993a9c0>, '3d0b3c7e93a6309a37688bcf60186a2ed9533795') > > > > The same hardware is not showing any other signs of distress. > > > > But it is running from SD card, so I'll try from internal NAND Flash. > > > > On Wed, May 13, 2015 at 12:40:11PM -0300, Gonzalo Odiard wrote: > > > I have pushed two changes to the clock activity repo > > > and send a pr to sugar-toolkit-gtk3 [1] > > > > > > The pr avoid checking if the espeak plugin is installed every time > > > the enabled() function is called. I suppose that could remove the > scanning. > > > > > > I couldn't reproduce the crash here, testing in sugar-build on F21, > > > in a xo-1 with 13.2.4 and in a vm with ubuntu. > > > > > > Gonzalo > > > > > > [1] [1]https://github.com/sugarlabs/sugar-toolkit-gtk3/pull/215 > > > > > > On Tue, May 12, 2015 at 7:21 PM, James Cameron <[2]qu...@laptop.org> > wrote: > > > > > > On Tue, May 12, 2015 at 06:22:42PM -0300, Gonzalo Odiard wrote: > > > > I think I found the problem. > > > > Could you confirm replacing the attached file in the activity > dir? > > > > > > Thanks, that's much better. The warning about rate and the delay > > > before speaking have been fixed. > > > > > > Rarely, about one in 10 times, it doesn't speak, and reports in log > > > > > > (sugar-activity:2492): GStreamer-CRITICAL **: > gst_memory_new_wrapped: > > > assertion `offset + size <= maxsize' failed > > > > > > (sugar-activity:2492): GStreamer-CRITICAL **: > gst_buffer_insert_memory: > > > assertion `mem != NULL' failed > > > > > > Rarely, about one in 5 times, it does segmentation fault. I've > > > captured two core dumps by adding "ulimit -c unlimited" to > > > ~/.sugar/debug. Both showed similar stack traces; a thread busy > doing > > > an fts_open and fts_sort at the same time as the main thread doing > > > something else. > > > > > > [3]http://dev.laptop.org/~quozl/z/1YsIKF.txt > > > > > > Speculation: the Gst.init() in src/sugar3/speech.py creates a > thread > > > which is racing with something in the main thread. fts_open and > > > fts_sort are necessary calls for scanning plugins. > > > > > > Sometimes the race condition corrupts pointers and we get the > silence > > > with GStreamer-CRITICAL messages. Sometimes the corruption causes > a > > > segmentation fault. > > > > > > Perhaps _GstSpeechPlayer should wait for good Gst.State before the > > > next call into Gst? > > > > > > I remember recent work on GStreamer plugin scan initialisation in > > > Sugar, but I can't find it yet. > > > > > > -- > > > James Cameron > > > [4]http://quozl.linux.org.au/ > > > > > > -- > > > Gonzalo Odiard > > > > > > SugarLabs - Software for children learning > > > > > > References: > > > > > > [1] https://github.com/sugarlabs/sugar-toolkit-gtk3/pull/215 > > > [2] mailto:qu...@laptop.org > > > [3] http://dev.laptop.org/~quozl/z/1YsIKF.txt > > > [4] http://quozl.linux.org.au/ > > > > > _______________________________________________ > > > Sugar-devel mailing list > > > Sugar-devel@lists.sugarlabs.org > > > http://lists.sugarlabs.org/listinfo/sugar-devel > > > > > > -- > > James Cameron > > http://quozl.linux.org.au/ > > -- > James Cameron > http://quozl.linux.org.au/ > -- Gonzalo Odiard SugarLabs - Software for children learning
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