Minha touchscreen funciona intermitentemente no meu Dell Inspiron 7537, principalmente não. Geralmente, ele não é detectado na inicialização, mas somente quando o computador é reiniciado após a suspensão.
Quando é detectado (após a suspensão) o lsusb produz:
Bus 002 Device 010: ID 04f3:0201 Elan Microelectronics Corp. Touchscreen
Aqui está a saída do dmesg que pode ser útil, não sei o que significa:
[12066.321322] usb 2-7: Device not responding to setup address.
[12066.529353] usb 2-7: Device not responding to setup address.
[12066.737096] usb 2-7: device not accepting address 64, error -71
[12066.737157] usb usb2-port7: unable to enumerate USB device
[12072.921194] usb 2-7: new full-speed USB device number 65 using xhci_hcd
[12078.238349] usb 2-7: New USB device found, idVendor=04f3, idProduct=0201
[12078.238353] usb 2-7: New USB device strings: Mfr=4, Product=14, SerialNumber=0
[12078.238355] usb 2-7: Product: Touchscreen
[12078.238357] usb 2-7: Manufacturer: ELAN
[12078.248271] input: ELAN Touchscreen as /devices/pci0000:00/0000:00:14.0/usb2/2-7/2-7:1.0/0003:04F3:0201.0007/input/input39
[12078.248764] hid-multitouch 0003:04F3:0201.0007: input,hiddev0,hidraw0: USB HID v1.10 Device [ELAN Touchscreen] on usb-0000:00:14.0-7/input0
[12206.688765] usb 2-7: reset full-speed USB device number 65 using xhci_hcd
[12211.988422] usb 2-7: device descriptor read/64, error -110
[12212.216526] usb 2-7: device descriptor read/64, error -71
[12212.444408] usb 2-7: reset full-speed USB device number 65 using xhci_hcd
[12212.564453] usb 2-7: device descriptor read/64, error -71
[12212.792460] usb 2-7: device descriptor read/64, error -71
[12213.020418] usb 2-7: reset full-speed USB device number 65 using xhci_hcd
[12213.020619] usb 2-7: Device not responding to setup address.
[12213.228624] usb 2-7: Device not responding to setup address.
[12213.436379] usb 2-7: device not accepting address 65, error -71
[12213.556394] usb 2-7: reset full-speed USB device number 65 using xhci_hcd
[12213.556582] usb 2-7: Device not responding to setup address.
[12213.764606] usb 2-7: Device not responding to setup address.
[12213.972420] usb 2-7: device not accepting address 65, error -71
[12213.972501] usb 2-7: USB disconnect, device number 65
[12214.292362] usb 2-7: new full-speed USB device number 66 using xhci_hcd
[12214.412382] usb 2-7: device descriptor read/64, error -71
[12214.644405] usb 2-7: device descriptor read/64, error -71
[12214.872380] usb 2-7: new full-speed USB device number 67 using xhci_hcd
[12214.992373] usb 2-7: device descriptor read/64, error -71
[12215.220398] usb 2-7: device descriptor read/64, error -71
[12215.448371] usb 2-7: new full-speed USB device number 68 using xhci_hcd
[12215.448579] usb 2-7: Device not responding to setup address.
[12215.656548] usb 2-7: Device not responding to setup address.
[12215.864407] usb 2-7: device not accepting address 68, error -71
[12215.984466] usb 2-7: new full-speed USB device number 69 using xhci_hcd
[12215.984740] usb 2-7: Device not responding to setup address.
[12216.192737] usb 2-7: Device not responding to setup address.
[12216.400385] usb 2-7: device not accepting address 69, error -71
[12216.400432] usb usb2-port7: unable to enumerate USB device
A partir de um LiveUSB, o ecrã táctil funciona no Ubuntu Gnome, Ubuntu 16.04.03 LTS, mas não no Ubuntu 17.10, no KDE Neon (qualquer versão dos últimos anos) ou no Kubuntu. Eu tenho tido esse problema por alguns anos agora eu procurei por respostas aqui e outros sites, mas sem sucesso. Existe alguém aí que poderia ajudar?