NixOS on Dell 7490
The well-known kernel options i915.enable_dc=0
and intel_idle.max_cstate=1
are still helpful with my latest installation of NixOS 24.5 on this device.
They live on in the /etc/nixos
configuration files:
boot.kernelParams = [
"quiet"
"splash"
# Fix instability on Latitude 7490.
"i915.enable_dc=0"
"intel_idle.max_cstate=1"
"add_efi_memmap"
"consoleblank=300"
# Fix slow shutdown/reboot.
"apm=power_off"
"acpi=force"
"reboot=acpi"
];
hardware.cpu.intel.updateMicrocode = true;
The Dell notebook still feels snappy enought with a Gnome Desktop in NixOS and even the unattended installation of Windows 11 in a VirtualBox works does not fail at first glance.