diff --git a/docs/DellLatitude7490.txt b/docs/DellLatitude7490.txt
index 3ce7b96..3fa0130 100644
--- a/docs/DellLatitude7490.txt
+++ b/docs/DellLatitude7490.txt
@@ -25,6 +25,9 @@ have been:
   - Adding i915.modeset=0 to the boot line: FAILED
   - Adding acpi_osi='Windows 2018' to the boot line: TESTING
   - Adding i915.enable_dc=0 to the boot line: TESTING
+  - Adding intel_idle.max_cstate=1 to the boot line: TESTING
 
 Currently the "acpi_osi='Windows 2018'" kernel option seems to be
 working.
+
+https://wiki.archlinux.org/title/intel_graphics#Crash/freeze_on_low_power_Intel_CPUs