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I assume some kernel parameters are different. The computer is Clevo N850EJ Any suggestions on how to overcome the problem?

Alex J.
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    Have you [checked the integrity of the Ubuntu iso](https://askubuntu.com/questions/17764/how-can-i-check-the-integrity-of-a-downloaded-ubuntu-cd) before creating the live USB? – pomsky Aug 01 '18 at 07:33

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The problem was solved after trying with Ubuntu 18.04.1, and adding the following to the boot string

 acpi_os_name=Linux acpi_osi= acpi_backlight=vendor 
Alex J.
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