Pango errors?

Stefan Kost ensonic at
Wed Aug 31 06:23:25 PDT 2011

On 08/31/11 14:45, wally bkg wrote:
> Any idea how to fix these?  I'm getting these "randomly" a third or
> fourth time I run my program on some systems:
> Pango-WARNING **: failed to create cairo scaled font, expect ugly
> output. the offending font is 'DejaVu Sans Mono 18'

One thing to do is to use a colon to delimit name and size. 'DejaVu Sans

> **
> Pango:ERROR:/build/buildd/pango1.0-1.28.0/pango/pango-ot-buffer.c:346:pango_ot_buffer_output:
> assertion failed: (face)
> (rtEyeTracker:1899): Pango-WARNING **: font_face status is: invalid
> matrix (not invertible)
> (rtEyeTracker:1899): Pango-WARNING **: scaled_font status is: invalid
> matrix (not invertible)
> Aborted
> I'm using three gsttimeoverly elements and setting some static text
> labels using the "text" properties of the elements. I'm using default
> fonts and sizes.
> It seems pretty random as usually when  restarting the program it
> doesn't happen next time.  Is there something I need to do when
> shutting down my pipeline to prevent this the next time the program runs?
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