I'm using an HP detachable laptop, everything works fine, except touchscreen and audio; this PC has a synaptic digitizer which is detected but is not working, nor Ubuntu's driver tool seems to find nothing to install. I'm running Xubuntu (Ubuntu 16.04 xenial); Strange thing to mention: during live boot everything was fine, audio and touchscreen too. Using xinput list --name-only :
Virtual core pointer Virtual core XTEST pointer SYNA7508:00 06CB:1613 Pen SYNA7508:00 06CB:1613 HID 04f3:074d Virtual core keyboard Virtual core XTEST keyboard Power button Video bus Power button axp20x-pek HP WMI hotkeys HID 04f3:074d
showing 2 synaptic devices, one for pen detection and one for normal use, but none of them works. dmesg showed me some error that i can't understand (I'm writing only interested lines:
12c_hid i2c-SYNA7508:00: i2c-SYNA7508:00 supply vdd not found, using dummy regulator
input: SYNA7508:00 06CB:1613 Pen as /devices/pci0000:00/808622C1:05/i2c-5/i2c-SYNA7508:00/0018:06C:1613.0001/input/input11 input: SYNA7508:00 06CB:1613 as /devices/pci0000:00/808622C1:05/i2c-5/i2c-SYNA7508:00/0018:06C:1613.0001/input/input12 hid-multitouch 0018:06CB:1613.0001: input,hidraw2: 12C HID v1.00 Device [SYNA7508:00 06CB:1613] on i2c-SYNA7508:00
Someone has an idea to fix the touchscreen?