I asked this because I have problem to bring my I2C device up on Chromium OS. I have a x86 laptop which works well on win10 OS with I2C-HID touchscreen device. Currently, I want to install Chromium OS on it with original set (No retrofit required). I have tried to install three versions of Chromium OS(R58-9334, R59-9351, R60-9554) respectively, all of them runs kernel v4.4 and all of them can see nothing for my device by “ls /sys/bus/i2c/devices”. The output file is as “Chromum_v4.4.52_dev_bus_i2c_devices_0517.jpg”. I guess the underlying drivers(I2C bus, ACPI DSDT table) could be failed to recognize my I2C device. Also I do some experiment by installed Ubuntu desktop version(16.04) with kernel version v4.4 on the same laptop. My device can be found and touchscreen works. Please refer to "Ubuntu_16.04_Kernel-v.4.4_0517.jpg". Attached files is my kernel log(kernel version: v4.4.52) and DSDT table, the label [ELAN] is by me; please ignore it. I am not familiar with I2C bus / ACPI driver, please let me know if any idea or any logs you need. Thanks. BR, Scott
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Kernel_log.bz2
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dsdt.dsl.bz2
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Chromum_v4.4.52_dev_bus_i2c_devices_0517.jpg
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Ubuntu_16.04_Kernel-v.4.4_0517.jpg
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