Touchscreen pointer jumps to right edge - Page 3

HiJackZX1 · 03-16-2008, 12:31 PM

With my install all 3 Lilliputs are in very space confined areas..... I have not figured out the setup I will use.... I was thinking of putting a thin fan at the top and the bottom... one will blow air in, the other out, or should I have both blow in? That will be done to the sunvisor screens. The Lilliput in the dash I was thinking of making small airducts on the back were the screens vents are and have a large fan connected that draws air out.... or maybe I should do the same were it draws air in and another fan draws air out... What do you guys think?

robjen1019 · 03-16-2008, 08:05 PM

I had the same screen and it did the same thing. Seemed to only happen when the screen was cold. after a few minutes, it would work fine. I finially broke it trying to fix the screen. Now I have a xernec and couldn't be happier.

sniiki · 03-19-2008, 05:08 AM

Quote: Originally Posted by FusionFanatic

if you don't even know the brand name of the monitor, do you really need to worry about it's warranty? if you ever wanted to file a warranty claim on it, chances are you would have to pay to ship it overseas to Asia to have any work done on it (the shipping alone could cost more than the monitor itself

).

Update to this..

Have to give some credit for HCCL as they mailed me few days ago and turned out that they would have paid the shipping costs also if I had returned the screen.

ShawJohn · 03-19-2008, 11:35 AM

Quote: Originally Posted by sniiki

I really wonder why these small panels run so damn hot. I mean this get REALLY hot and all desktop monitors stay really cool, barely warms at all.

Maybe I should install thin fan on the back side..

Big monitors have much more surface area to disipate the heat.
And much bigger cases which hide the true extent of the temperature to those touching the outside of the box.
Go inside on and you will probably find parts that get as hot as any lilli does.

The quality of the touchscreen overlays in my experience, and many others on here is generally not fantastic. And is a well known issue. Leaving the car parked in direct sunshine on a hot day is also not doing your screen any good as incar temps can easily soar past 100F. Which does nothing for the stability of the adhesives used.

silvi4000 · 03-20-2008, 09:15 PM

Quote: Originally Posted by ShawJohn

Sounds to me like the same problem the 7" lilliputs get. The touchscreen overlay becomes delaminated as the glue holding it all together melts when the screen gets too hot. Its starts off erratic, then eventually the whole right hand side of the touchscreen will stop working. This problem was acknowledged by Mo @ Lilliput UK Tech support.

Well known fault on Lilli's. Only known fix is replacement overlay, costs about £40 IIRC from Armen @ digitalww.com

You'd have thought screen would have come on more than they have in the last 4 years!

I think my lilliput is suffering from this problem. Suddenly the right hand side is not working properly. The x coordinate gets registered almost on the center of the screen, the y coordinate gets registered correctly. After calibration, the linearization screen shows "bumps" on the right edge of the screen.
Is this behavior what you were referring as the problem Lilliput tech acknowledged?

ShawJohn · 03-23-2008, 10:42 AM

yes, and the linearisation will change from time to time to so you need to leave a shortcut to the calibration app on the left hand side of the desktop just incase you need it.

ShawJohn · 03-23-2008, 10:45 AM

Maybe we should get all the lilli owners who had this fault get together and mention 'Class Action' to Lilliput? Maybe if we get enough people together they will change their minds!

Somewhere on one of my PC's I have an email from Mo @ Lilliput(UK) which acknowledges that there is a production/design problem, he refused me a new free TS though. But he did offer to look at it if I sent it in, I didn't want to do this though as I didn't have another screen to use in the mean time, and at the moment, my current screen isn't that bad - touch wood!
I have had the original supplier replace it twice though.

silvi4000 · 03-23-2008, 12:21 PM

count me in for whatever you need if you are going to contact lilliput again.
In my case the calibration doesn't help. No matter how many time I run the linearization utility it always leaves a "bump" on the right side.
One thing I noticed is that using your finger works better than using a stylus. It seems the extra surface pressed by the finger helps the screen to determine the correct coordinates. The stylus gives very erratic results.

sniiki · 03-30-2008, 04:37 AM

Received the new panel from China last week. Wasn't the same kind as the old one but size was exactly same and fitted nicely. Uses same drives.
Came really well packed too.

rsema · 04-10-2008, 06:53 PM

hey i ordered one too but unfortunately the panel was broken when i recieved it....not a big deal though as my problem was only the controller! thank god.....but now my vga port wont work so i am trying to figure out how to extend my primary lcd cable to the touchscreen...any suggestions would be great....thanks and good luck everyone

ShawJohn · 04-11-2008, 04:38 AM

I think this linearisation drift thing may be a software/driver problem and not directly related to touchscreen hardware.

Mine has started behaving quite differently now with a new build. Sometime you can actually see the curser go for a burton whilst you hold it still on the screen the pointer will suddenly fly to the left about 3". It will stay there for a while, and then suddenly jump back, sometimes it won't go back though, and I have to recalibrate it.

I think that the driver software might be missbehaving somehow as this only started happening on this build and I'm using new drivers instead of the Eglax ones.

More testing to follow...

silvi4000 · 04-11-2008, 09:57 AM

Quote: Originally Posted by ShawJohn

I think this linearisation drift thing may be a software/driver problem and not directly related to touchscreen hardware.

Mine has started behaving quite differently now with a new build. Sometime you can actually see the curser go for a burton whilst you hold it still on the screen the pointer will suddenly fly to the left about 3". It will stay there for a while, and then suddenly jump back, sometimes it won't go back though, and I have to recalibrate it.

I think that the driver software might be missbehaving somehow as this only started happening on this build and I'm using new drivers instead of the Eglax ones.

More testing to follow...

sounds interesting more so as I have inspected the touchscreen panel very closely by taking it out and there are no imperfections that can be seen. But then, how come that replacing the touchscreen panel fixes the issue. If it were a software problem shouldn't it replicate on the new panel?
Im going to take out the display and test it on other computers. If not mistaken, the calibration is stored on the display controller. Calibrating it once should make it work the same way on different computers. Is it shows the same problem on different computers it should be clear is a hardware problem.

If I cant get the screen to work properly I'm going to try to change some skins and move the most used buttons to the left and leave on the right things like album art and other non-interactive content.

sniiki · 04-18-2008, 03:20 AM

In some cases it may be a driver issue but in my case the panel was faulty for sure.

ShawJohn · 04-18-2008, 08:18 AM

Just because the TS has no imperfections doesn't mean it works

I suspect that some kind of conflict between the controller and the driver is happening here, IIRC it only started doing this since installing .Net and SP3

IMO this is not the same problem as the right hand edge just stopping working, its like the x-offset has been changed by some software?!?

silvi4000 · 04-19-2008, 04:12 PM

Yesterday I ran windows update on the carputer. There was an updated TS driver so I went ahead and selected it for download. Once the download and installation finished the screen calibration went to $&^%. As soon as the installation finished the x coordinates became "compressed" to the left. What I mean is that as you moved your finger from left to right, the pointer increments to the right were less and less as you approached the right border, like a logarithmic graph behaves. I did the update while driving and I couldn't use the carputer for the rest of the trip, it was so bad I had to vnc in to run the calibration utility.
This points to a driver issue, as soon as the driver was replaced, the calibration was lost. I thought calibrating the screen meant training the controller on were the edges of the screen were so it could send the right coordinates to the driver. The way this seems to work is that calibration is done on software on the driver.
This could be confirmed by taking the screen to different computers and verifying that calibration is "lost" as you moved it from computer to computer.
The updated driver didn't made a difference, the screen still has a bump on the right hand of the screen.
Like ShawJohn said, the right hand side is working as far as the Y coordinate goes, its just the X coordinated that get screwed.