Public bug reported:
Using 16.04 amd64 on an Asus T300 CHI 2-in-1 transformer-book (tablet +
docking Bluetooth keyboard/trackpad).
At boot-time the USB-connected Synaptics touchscreen digitiser is not
recognised but after an S3 sleep/resume it is. Smells like an ACPI issue
but so far testing with and without acpi_osi="Windows 2013" (one of 2
OSI strings the ACPI DSDT recognises, and the most featureful of the
two) has not solved it.
What is strange is the installer's 'Try Ubuntu' live session did have an
active touchscreen.
** Affects: xinput (Ubuntu)
Importance: Undecided
Status: New
** Attachment added: "dmesg boot > suspend > resume > device found"
https://bugs.launchpad.net/bugs/1574028/+attachment/4644315/+files/missing-touchpad.log
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https://bugs.launchpad.net/bugs/1574028
Title:
16,04: Asus T300 CHI: touchscreen digitiser missing at boot
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