Flushing of /dev/fb0 in X before gets overwritten ??
umang.ece at gmail.com
Mon May 4 06:23:22 PDT 2009
Hi All ,
I have a little query regarding the frame buffer initialization part
in X . Does X reset the /dev/fb0 [flush the buffer ] whenever it get
written by some process ??
If it is , then where it is done in xorg-X11 code ??.
After starting of X , I m using following line in one of my scripts to
redirect my img0 image to screen .
dd if=/etc/xdg/icons/img0 of=/dev/fb0
I m observing a <2 sec blank screen before img0 shown on screen
[written to /dev/fb0]
Even when my mouse cursor is shown on screen , before cursor comes up
, a 0.5 ms blank screen comes up .
Can I prevent my fb0 to get cleared before anydata get written onto
it ?? where should I look for this ?
In xorg.conf , I have :
Option "fbdev" "/dev/fb0"
Identifier "Screen 1"
Any help would be appreciated .
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