diff --git a/browser/base/content/test/performance/browser_preferences_usage.js b/browser/base/content/test/performance/browser_preferences_usage.js
index 0094c9094343..00843f5af7a6 100644
--- a/browser/base/content/test/performance/browser_preferences_usage.js
+++ b/browser/base/content/test/performance/browser_preferences_usage.js
@@ -240,6 +240,15 @@ add_task(async function navigate_around() {
         min: 49,
         max: 55,
       };
+      // This was previously being read in the content process, but
+      // bug 1725573 moved it into the parent process.  We also block
+      // the main thread on requests to the X server, which is likely
+      // more problematic than the pref read.  These issues are covered
+      // by https://bugzilla.mozilla.org/show_bug.cgi?id=1729080
+      knownProblematicPrefs["gfx.color_management.display_profile"] = {
+        min: 49,
+        max: 50,
+      };
     } else if (AppConstants.platform == "win") {
       // The following 2 graphics prefs are covered by
       // https://bugzilla.mozilla.org/show_bug.cgi?id=1639497
diff --git a/gfx/thebes/gfxPlatformGtk.cpp b/gfx/thebes/gfxPlatformGtk.cpp
index 7ad80f9f08ac..3516d5234750 100644
--- a/gfx/thebes/gfxPlatformGtk.cpp
+++ b/gfx/thebes/gfxPlatformGtk.cpp
@@ -27,6 +27,7 @@
 #include "GLContextProvider.h"
 #include "mozilla/Atomics.h"
 #include "mozilla/Components.h"
+#include "mozilla/dom/ContentChild.h"
 #include "mozilla/FontPropertyTypes.h"
 #include "mozilla/gfx/2D.h"
 #include "mozilla/gfx/Logging.h"
@@ -493,6 +494,26 @@ nsTArray<uint8_t> gfxPlatformGtk::GetPlatformCMSOutputProfileData() {
     return prefProfileData;
   }
 
+  if (XRE_IsContentProcess()) {
+    MOZ_ASSERT(NS_IsMainThread());
+    // This will be passed in during InitChild so we can avoid sending a
+    // sync message back to the parent during init.
+    const mozilla::gfx::ContentDeviceData* contentDeviceData =
+        GetInitContentDeviceData();
+    if (contentDeviceData) {
+      // On Windows, we assert that the profile isn't empty, but on
+      // Linux it can legitimately be empty if the display isn't
+      // calibrated.  Thus, no assertion here.
+      return contentDeviceData->cmsOutputProfileData().Clone();
+    }
+
+    // Otherwise we need to ask the parent for the updated color profile
+    mozilla::dom::ContentChild* cc = mozilla::dom::ContentChild::GetSingleton();
+    nsTArray<uint8_t> result;
+    Unused << cc->SendGetOutputColorProfileData(&result);
+    return result;
+  }
+
   if (!mIsX11Display) {
     return nsTArray<uint8_t>();
   }
@@ -849,3 +870,9 @@ already_AddRefed<gfx::VsyncSource> gfxPlatformGtk::CreateHardwareVsyncSource() {
 }
 
 #endif
+
+void gfxPlatformGtk::BuildContentDeviceData(ContentDeviceData* aOut) {
+  gfxPlatform::BuildContentDeviceData(aOut);
+
+  aOut->cmsOutputProfileData() = GetPlatformCMSOutputProfileData();
+}
diff --git a/gfx/thebes/gfxPlatformGtk.h b/gfx/thebes/gfxPlatformGtk.h
index 47bd110f7b57..7a5ee8ac4ce9 100644
--- a/gfx/thebes/gfxPlatformGtk.h
+++ b/gfx/thebes/gfxPlatformGtk.h
@@ -76,6 +76,7 @@ class gfxPlatformGtk final : public gfxPlatform {
   void InitPlatformGPUProcessPrefs() override;
   void InitWebRenderConfig() override;
   bool CheckVariationFontSupport() override;
+  void BuildContentDeviceData(mozilla::gfx::ContentDeviceData* aOut) override;
 
   int8_t mMaxGenericSubstitutions;