I recently bought a marketed as being for Raspberry Pi and was disappointed to find that no touchscreen support is enabled in Raspbian's kernel by default. With the upcoming focus on RPi launching their own touchscreen LCD add-on, I'm wondering if it is time that we enable support for USB Touch Screens out of the box, or as a downloadable package.
The touchscreen needs the 'USB touchscreen Driver' and Egalax controller. I have tried, but it was a lot of effort, and after several hours and a successful build, it had detected the touchscreen but the compiled kernel caused other issues on the Pi. I hate the idea of having to recompile my kernel constantly just to keep this thing working and stay on top of the latest updates. Forums are full of frustrated users trying to get these things working, so it's clear I'm not alone in requesting this. A few examples of other users struggling with this are below: Some other info relating to getting this working on the Pi.
Jun 10, 2017. EGALAX TOUCH DRIVER: Usb touchscreen controller very common. Or check the approach to egalax touch driver linux.
This is an How-To guide on getting a Touch Screen Film working in Linux. The Touch screen I use here was. It is a 7″ USB based touch film layered on a glass screen. This can be used along with a.
In this case, I have set it up with a Raspberry-Pi system + 7″ Lilliput monitor + raspbian OS (Debian derivative Linux). In another post. This guide focuses on getting touch screen worked. This one is coming from D-WAV Scientific Co. It comes with USB interface. 7-inch USB Touch Screen Film Here is how to identify the device I mentioned here. $ lsusb......
Bus 006 Device 002: ID 0eef:0001 D-WAV Scientific Co., Ltd eGalax TouchScreen The Linux kernel version is 3.2.27-cutdown+ from raspbian. UPDATE: The first step in getting this done is to compile the raspbian kernel with necessary kernel module.. Before compiling, in menuconfig we include usbtouchscreen module, which supports this touch screen film. Here is where do we need to find this module.
Device Drivers ->Input device support ->Generic input layer (needed for keyboard, mouse, ) ->Touchscreens (INPUT_TOUCHSCREEN [=y]) ->TOUCHSCREEN_USB_EGALAX [=y] Once kernel compiled and rebooted with new kernel, it should be detected as USB Touch Screen of Serial Input device as observed below. The usbtouchscreen module loaded automatically. $ demsg........ Usb 1-1. Wii Download Windows 10. 3.3.2: new low-speed USB device number 9 using dwc_otg usb 1-1.3.3.2: New USB device found, idVendor=0eef, idProduct=0001 usb 1-1.3.3.2: New USB device strings: Mfr=1, Product=2, SerialNumber=0 usb 1-1.3.3.2: Product: USB TouchController usb 1-1.3.3.2: Manufacturer: eGalax Inc.
Input: eGalax Inc. USB TouchController as /devices/platform/bcm2708_usb/usb1/1-1/1-1.3/1-1.3.3/1-1.3.3.2/1-1.3.3.2:1.0/input/input2 usbcore: registered new interface driver usbtouchscreen $ lsmod grep touch usbtouchscreen 8856 0 $ cat /proc/bus/input/devices I: Bus=0003 Vendor=0eef Product=0001 Version=0100 N: Name=”eGalax Inc. USB TouchController” P: Phys=usb-bcm2708_usb-1.3.3.2/input0 S: Sysfs=/devices/platform/bcm2708_usb/usb1/1-1/1-1.3/1-1.3.3/1-1.3.3.2/1-1.3.3.2:1.0/input/input2 U: Uniq= H: Handlers=mouse1 event2 B: PROP=0 B: EV=b B: KEY=400 0 0 0 0 0 0 0 0 0 0 B: ABS=3 Raspberry Pi Setup Now we need to install the right X input driver. For me the xserver-xorg-input-evtouch package in repository failed to function. So I downloaded the source tar file and patch from. Apply the patch and build the source to get evtouch_drv.so.
Once installed you should have it in /usr/local/lib/xorg/modules/input/. Now it is time to edit xorg.conf file.
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