[vdr] osdteletext and problem with OSD

Udo Richter udo_richter at gmx.de
Fri Aug 12 14:44:24 CEST 2005


Marcel Wiesweg wrote:
> I received a bug report for osdteletext which describes a way to crash the FF 
> cards' OSD, and I am able to reproduce this. (Open teletext on a channel with 
> colorful teletext such as RTL, press repeatedly, fast and in random order 
> Yellow Key for half page and Green Key for zoom.)

The green zoom key just redraws the osd, no magic in there. The yellow
half page key switches (on FF-DVB 2mb) from 2bpp to 4bpp display. The
4bpp display maximizes its own size based on free osd memory, minus a
few lines for backup.

> Then the OSD seems to hang a short time, then disappears, after a while some 
> garbage appears. I tested with the in-kernel drivers from 2.6.11 and 2.6.12.
> Neither VDR nor the kernel driver seem to crash, but the OSD will not work 
> again. 

Tried here, no problems. I can easily fill up the keyboard buffer with
green/yellow key presses, no crashes or strange things, and as soon as
all key presses are processed, everything is back normal.

Kernel 2.4, driver 1.0.x CVS from january, firmware 261d.

Cheers,

Udo



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