From 18af97340c507206f3638df4d4b7999fd32484d3 Mon Sep 17 00:00:00 2001
From: Symphorien Gibol <symphorien+git@xlumurb.eu>
Date: Sat, 1 May 2021 17:45:25 +0200
Subject: [PATCH] dell precision 5530: avoid screen flicker

---
 dell/precision/5530/default.nix | 7 +++++--
 1 file changed, 5 insertions(+), 2 deletions(-)

diff --git a/dell/precision/5530/default.nix b/dell/precision/5530/default.nix
index 52e0dd5..b97bf0c 100644
--- a/dell/precision/5530/default.nix
+++ b/dell/precision/5530/default.nix
@@ -7,9 +7,9 @@
     ../../../common/pc/laptop/ssd
   ];
 
-  # https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1803179/comments/149
-  # fix lspci hanging with nouveau
   boot.kernelParams = [
+    # fix lspci hanging with nouveau
+    # source https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1803179/comments/149
     "acpi_rev_override=1"
     "acpi_osi=Linux"
     "nouveau.modeset=0"
@@ -18,5 +18,8 @@
     "scsi_mod.use_blk_mq=1"
     "nouveau.runpm=0"
     "mem_sleep_default=deep"
+    # fix flicker
+    # source https://wiki.archlinux.org/index.php/Intel_graphics#Screen_flickering
+    "i915.enable_psr=0"
   ];
 }