On Saturday, May 05, 2012, Paolo wrote: > I thought it might be an hardware issue...
That is a phenomon called ghost-key. This is something inherent in matrix-keyboards. http://www.dribin.org/dave/keyboard/one_html/ > Too bad, I'll try to find a workaround. The only workaround is to suppress the 3'rd key (which will appear as two new keys) if the pressed keys form a rectangle in the keyboard matrix. ________________________________________ From: maemo-developers-boun...@maemo.org [maemo-developers-boun...@maemo.org] on behalf of ext Paolo Iommarini [sakya...@yahoo.it] Sent: Saturday, May 05, 2012 9:08 PM To: maemo-developers Subject: Re: Problem with three keys pressed I thought it might be an hardware issue... Too bad, I'll try to find a workaround. Many thanks > On Sat, 5 May 2012, Paolo Iommarini wrote: > >> I have a problem when three keys are pressed (I have the english >> keyboard). >> There are some keys combination that generates an additional key press. >> This seems a system bug. >> >> It can be reproduced in any textbox (like the contact search). >> If you press a+x+up arrow you'll see a "p". >> >> I noticed it while using the Game Gripper with the psx emulator: >> pressing down+left+circle will end in a down+left+triangle+circle >> combination. >> I debugged the key-press-event and it is really getting a press event >> for the key "p" (code 33). >> >> There are also other strange keys combination like >> a+x+return = "," >> a+x+. = "o." >> >> Can someone please test it and say if it's really a system bug? > > This is a hardware issue. And there are more combinations revealing this > issue. See for example here: > > http://talk.maemo.org/archive/index.php/t-40806.html > > I believe it is possible to recognize the fake key press/release events > by analyzing the timing of those events, thus discarding these events > and working around the hardware problem. But to my knowledge, noone has > done it yet, and I do not expect anyone to actually do it. _______________________________________________ maemo-developers mailing list maemo-developers@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-developers _______________________________________________ maemo-developers mailing list maemo-developers@maemo.org https://lists.maemo.org/mailman/listinfo/maemo-developers
