Fix flickering display after manually installing an OS - TUXEDO Computers

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Fix flickering display after manually installing an OS

    If you install an operating system manually (not through FAI) on your InfinityBook Pro 14 Gen6 (only 3K-Omnia-Variant!), you might experience display flickering afterwards. To fix this, you must add a parameter to the configuration of the boot manager GRUB. 

    To achieve this, open the file /etc/default/grub with an editor of your choice. The command to do this with the editor Nano looks like this:

    sudo nano /etc/default/grub

    Search there in the upper area for the line beginning with 

    GRUB_CMDLINE_LINUX_DEFAULT=

    The parameters in quotation marks may differ depending on the distribution you use, and are not relevant here. Within the quotes and separated by a space, you must now enter the parameter:

    i915.enable_psr=0

    This could look something like this:

    GRUB_CMDLINE_LINUX_DEFAULT="quiet i915.enable_psr=0"
    Thereafter, save the change in the editor and close it. Finally, you have to update GRUB by issuing the following command in the terminal:

    sudo update-grub

    This completes the change, and a reboot should hopefully produce a display without flickering. You can check if the parameter was taken correctly by checking the kernel command line (cmdline) in the terminal:

    cat /proc/cmdline

    In the output, the parameter should be displayed at the end.