Re: Screen flicker

The classical screen flicker is caused by a bug in the strongarm related
to DMA priority, which causes corruption of the LCD data stream. The
touchscreen is independent from this and shouldn't be affected.

Are you linking with GPE libraries, or just GTK? If the former, be
careful that you are properly pairing up press and release events, since
libgpewidget will synthesize a button 3 press and release if you hold
down button 1 for more than about a second.

To reduce the impact of the flickering, one option would be to try a
different wifi driver. For most cards, there are at least two driver
options in Familiar: old wavelan cards can use wvlan_cs or orinoco_cs;
prism-based cards can use orinoco_cs, hostap_cs or wlan-ng. You can
also experiment with LCD controller settings a bit. Nils Faerber posted
a patch some time ago that you could try: you should be able to dig it
out of the archives.

p.

On Thu, 2003-04-24 at 02:46, DL wrote:
> Does anyone know how to reduce the screen flicker (on an Ipaq 3850) when
> theres a large amount of traffic going over the WaveLAN connection? The app
> I'm working on transmits speech when the user presses a GtkEntry widget and
> stops the transmission when the widget is released. Unfortunately, I think
> the screen flicker is messing with the touch-screen and causing it to fire a
> button_release event before I actually raise the stylus (cutting me off in
> the process). I've tried quite a few timing_increment_ns settings but that
> hasn't worked at all.
>
> Thanks,
> D
Received on Thu Apr 24 2003 - 07:54:20 EDT