total noob with linux needs help with touch screen please.

[quicksilver384]

Hi folks I am a total noob when it comes to linux and I running an R Pi with Raspbmc installed using the Noobs installer.

I can use a keyboard a mouse with it which works with no problems, however the touch screen I have (http://www.sainsmart.com/7-inch-tft-lcd ... a-2av.html) when used the cursor does not move as it should.

when I move my finger up and down the cursor moves left and right and when I move left and right it moves down and up.

I have connected the screen to my laptop and it does work fine just not on the Pi.

Please help.

Thanks.

John.

[DirkS]

Do you have the file /etc/X11/xorg.conf.d/99-calibration.conf on your Pi?
It contains the calibration data and looks something like

Code: Select all

Section "InputClass"
Identifier "calibration"
MatchProduct "eGalax Inc. USB TouchController"
Option "Calibration" "121 1917 317 1741"
Option "SwapAxes" "1"
EndSection

You may have to add (or change) the option 'SwapAxes'

[quicksilver384]

I have no idea. How would i find this?

Just put the sd card into laptop and search?

The swap axis bit sounds a possibility though.

[Laurens-wuyts]

Try on the raspberry:

Code: Select all

sudo nano /etc/X11/xorg.conf.d/99-calibration.conf

When changed/made press:
ctrl x
y
Enter

Laurens

[quicksilver384]

Thanks. I have tried that and at the top it has the path and file name, i have type the code from yiur first post in there but when i try to save it says "Error writing *then the file name and path* no such file or directory

[DirkS]

Thanks. I have tried that and at the top it has the path and file name, i have type the code from yiur first post in there but when i try to save it says "Error writing *then the file name and path* no such file or directory

Well, I only told you how to find the file, not how to edit it...
You need root permissions to change the file.

Open a terminal window and enter the commands as given by Laurens in the post above.

[quicksilver384]

How would i open the terminal? I am on the command line screen when i exited raspbmc

[DirkS]

How would i open the terminal? I am on the command line screen when i exited raspbmc

Then just enter the commands from there.

[quicksilver384]

Ahh thats where i typed it and it says error writing when i try to save

[DirkS]

How would i open the terminal? I am on the command line screen when i exited raspbmc

Just realised that the cure I gave may not solve your problem.
I assumed you're using X (the GUI), but the mention of raspbmc changes all that.

You probably have to make other changes to make it work, but I'll have to check what these are.

[DirkS]

Ahh thats where i typed it and it says error writing when i try to save

The directory doesn't exist because X is not installed on raspbmc.
See my post above.

[quicksilver384]

How would i open the terminal? I am on the command line screen when i exited raspbmc

Just realised that the cure I gave may not solve your problem.
I assumed you're using X (the GUI), but the mention of raspbmc changes all that.

You probably have to make other changes to make it work, but I'll have to check what these are.

Ok no prob thanks for the help. I will have to keep searching google.

I am only wanting it as a media PC for the car lol


I may just have to wait for Windows 10 to come out for the PI2 and use that

[DirkS]

Try the instructions at http://markamc.cybaman.net/?p=168
It would be a good idea to make a backup of your SD card first...

I may just have to wait for Windows 10 to come out for the PI2 and use that

Don't think it's worth the wait. Win10 for the Pi will be an 'IoT' version, aimed at developers. Probably not suitable for a media player.

[jtremble]

I am trying to do something similar and i am running into the same errors.

I am sure that part of it is because the X11 dir does not have /xorg.conf.d/99-calibration in it.
So when you go to write in it, it says "No such file..."

So, how do i get these to installed here in the first place, then i can edit it?

[DirkS]

So, how do i get these to installed here in the first place, then i can edit it?

Pointing to your own solution in case other users stumble upon this post: viewtopic.php?f=41&t=107354&p=745767#p745716

[bossbss]

How would i open the terminal? I am on the command line screen when i exited raspbmc

Just realised that the cure I gave may not solve your problem.
I assumed you're using X (the GUI), but the mention of raspbmc changes all that.

You probably have to make other changes to make it work, but I'll have to check what these are.

Ok no prob thanks for the help. I will have to keep searching google.

I am only wanting it as a media PC for the car lol


I may just have to wait for Windows 10 to come out for the PI2 and use that

you can do

sudo rm /etc/X11/xorg.conf.d
sudo mkdir /etc/X11/xorg.conf.d
sudo nano /etc/X11/xorg.conf.d/99-calibration.conf