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If this line is there (most probably within the last 3 lines) reboot and your touchscreen should be disabled.
Even if it has been reported as fixed upstream according to this bug report, users still suffer of this problem (reported for both Full HD model with kernel 4.20.12 and the QHD model with kernel 4.18.6).
Dynamic Brightness Control has been disabled and the monitor has been turned on for at least 30 minutes prior to start the calibration.With BIOS A02 and official Arch Linux kernels older than 4.4 and again starting from version 4.11.5, the sound card will be initialized in HDA mode. With the latest BIOS, the touchpad should work out-of-the-box with either the synaptics or libinput drivers. For more advanced settings with the Synaptics driver, see Touchpad Synaptics.If the touchpad freezes when you use more than one finger, try enabling Clickpad mode with .With version A02 or newer, almost everything should work out-of-the-box and the kernel boot parameters that were used in conjunction with earlier BIOS versions are no longer necessary.BIOS upgrade is easy, thanks to the EFI implementation: place the update binary (the just downloaded You may notice that the screen looks dimmer than you expect or the screen overall brightness changes constantly.