# ASUS Zenbook UX391

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## Fixing screen glitches

By default screen glitches will appear at some point, but the system is fully usable nevertheless. To fix this add `intel_idle.max_cstate=4` to your boot options.

For GRUB you can edit `/etc/default/grub`, add `intel_idle.max_cstate=4` to `GRUB_CMDLINE_LINUX_DEFAULT` and update grub with the new config.

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