diff --git a/alvr/server/cpp/alvr_server/ChaperoneUpdater.cpp b/alvr/server/cpp/alvr_server/ChaperoneUpdater.cpp
index 2877ffc57f..f20f485ef7 100644
--- a/alvr/server/cpp/alvr_server/ChaperoneUpdater.cpp
+++ b/alvr/server/cpp/alvr_server/ChaperoneUpdater.cpp
@@ -71,16 +71,27 @@ void _SetChaperoneArea(float areaWidth, float areaHeight) {
     perimeterPoints[3][0] = 1.0f * areaWidth;
     perimeterPoints[3][1] = -1.0f * areaHeight;
 
-    vr::VRChaperoneSetup()->SetWorkingPerimeter(
-        reinterpret_cast<vr::HmdVector2_t *>(perimeterPoints), 4);
-    vr::VRChaperoneSetup()->SetWorkingStandingZeroPoseToRawTrackingPose(&MATRIX_IDENTITY);
-    vr::VRChaperoneSetup()->SetWorkingSeatedZeroPoseToRawTrackingPose(&MATRIX_IDENTITY);
-    vr::VRChaperoneSetup()->SetWorkingPlayAreaSize(areaWidth, areaHeight);
-    vr::VRChaperoneSetup()->CommitWorkingCopy(vr::EChaperoneConfigFile_Live);
-
-    // Hide SteamVR Chaperone
-    vr::VRSettings()->SetFloat(
-        vr::k_pch_CollisionBounds_Section, vr::k_pch_CollisionBounds_FadeDistance_Float, 0.0f);
+    auto setup = vr::VRChaperoneSetup();
+
+    if (setup != nullptr)
+    {
+        vr::VRChaperoneSetup()->SetWorkingPerimeter(
+            reinterpret_cast<vr::HmdVector2_t *>(perimeterPoints), 4);
+        vr::VRChaperoneSetup()->SetWorkingStandingZeroPoseToRawTrackingPose(&MATRIX_IDENTITY);
+        vr::VRChaperoneSetup()->SetWorkingSeatedZeroPoseToRawTrackingPose(&MATRIX_IDENTITY);
+        vr::VRChaperoneSetup()->SetWorkingPlayAreaSize(areaWidth, areaHeight);
+        vr::VRChaperoneSetup()->CommitWorkingCopy(vr::EChaperoneConfigFile_Live);
+    }
+
+    auto settings = vr::VRSettings();
+
+    if (settings != nullptr)
+    {
+        // Hide SteamVR Chaperone
+        vr::VRSettings()->SetFloat(
+            vr::k_pch_CollisionBounds_Section, vr::k_pch_CollisionBounds_FadeDistance_Float, 0.0f);
+    }
+
 #endif
 }
 
@@ -91,10 +102,15 @@ std::unique_ptr<vr::HmdMatrix34_t> GetInvZeroPose() {
     {
         return nullptr;
     }
-    std::unique_ptr<vr::HmdMatrix34_t> mat;
+    auto mat = std::make_unique<vr::HmdMatrix34_t>();
     // revert pulls live into working copy
     vr::VRChaperoneSetup()->RevertWorkingCopy();
-    if (vr::VRCompositor()->GetTrackingSpace() == vr::TrackingUniverseStanding) {
+    auto compositor = vr::VRCompositor();
+    if (compositor == nullptr)
+    {
+        return nullptr;
+    }
+    if (compositor->GetTrackingSpace() == vr::TrackingUniverseStanding) {
         vr::VRChaperoneSetup()->GetWorkingStandingZeroPoseToRawTrackingPose(mat.get());
     } else {
         vr::VRChaperoneSetup()->GetWorkingSeatedZeroPoseToRawTrackingPose(mat.get());
diff --git a/alvr/server/cpp/alvr_server/alvr_server.cpp b/alvr/server/cpp/alvr_server/alvr_server.cpp
index 05b556f039..29599dafa0 100644
--- a/alvr/server/cpp/alvr_server/alvr_server.cpp
+++ b/alvr/server/cpp/alvr_server/alvr_server.cpp
@@ -33,7 +33,7 @@ std::unique_ptr<vr::HmdMatrix34_t> GetRawZeroPose() {
     {
         return nullptr;
     }
-    return vrmath::matInv33(std::move(invZeroPose));
+    return std::make_unique<vr::HmdMatrix34_t>(vrmath::matInv33(*invZeroPose));
 }
 
 bool IsOpenvrClientReady();
diff --git a/alvr/server/cpp/alvr_server/include/openvr_math.h b/alvr/server/cpp/alvr_server/include/openvr_math.h
index 1a6993d0bb..8374e17c66 100644
--- a/alvr/server/cpp/alvr_server/include/openvr_math.h
+++ b/alvr/server/cpp/alvr_server/include/openvr_math.h
@@ -298,42 +298,42 @@ namespace vrmath {
 		return result;
 	}
 
-  inline std::unique_ptr<vr::HmdMatrix34_t> matInv33(std::unique_ptr<vr::HmdMatrix34_t> matrix) {
-    std::unique_ptr<vr::HmdMatrix34_t> result;
-    float cofac00 = matrix->m[1][1] * matrix->m[2][2] - matrix->m[1][2] * matrix->m[2][1];
-    float cofac10 = matrix->m[1][2] * matrix->m[2][0] - matrix->m[1][0] * matrix->m[2][2];
-    float cofac20 = matrix->m[1][0] * matrix->m[2][1] - matrix->m[1][1] * matrix->m[2][0];
+  inline vr::HmdMatrix34_t matInv33(vr::HmdMatrix34_t matrix) {
+    vr::HmdMatrix34_t result;
+    float cofac00 = matrix.m[1][1] * matrix.m[2][2] - matrix.m[1][2] * matrix.m[2][1];
+    float cofac10 = matrix.m[1][2] * matrix.m[2][0] - matrix.m[1][0] * matrix.m[2][2];
+    float cofac20 = matrix.m[1][0] * matrix.m[2][1] - matrix.m[1][1] * matrix.m[2][0];
 
-    float det = matrix->m[0][0] * cofac00 + matrix->m[0][1] * cofac10 + matrix->m[0][2] * cofac20;
+    float det = matrix.m[0][0] * cofac00 + matrix.m[0][1] * cofac10 + matrix.m[0][2] * cofac20;
 
     if (det == 0) {
         vr::HmdMatrix34_t result = { { { 1.0, 0.0, 0.0, 0.0 }, { 0.0, 1.0, 0.0, 0.0 }, { 0.0, 0.0, 1.0, 0.0 } } };
-        return std::make_unique<vr::HmdMatrix34_t>(result);
+        return result;
     }
 
     float invDet = 1.0f / det;
 
-    float cofac01 = matrix->m[0][2] * matrix->m[2][1] - matrix->m[0][1] * matrix->m[2][2];
-    float cofac02 = matrix->m[0][1] * matrix->m[1][2] - matrix->m[0][2] * matrix->m[1][1];
-    float cofac11 = matrix->m[0][0] * matrix->m[2][2] - matrix->m[0][2] * matrix->m[2][0];
-    float cofac12 = matrix->m[0][2] * matrix->m[1][0] - matrix->m[0][0] * matrix->m[1][2];
-    float cofac21 = matrix->m[0][1] * matrix->m[2][0] - matrix->m[0][0] * matrix->m[2][1];
-    float cofac22 = matrix->m[0][0] * matrix->m[1][1] - matrix->m[0][1] * matrix->m[1][0];
-
-    result->m[0][0] = invDet * cofac00;
-    result->m[0][1] = invDet * cofac01;
-    result->m[0][2] = invDet * cofac02;
-    result->m[0][3] = 0.0f;
-
-    result->m[1][0] = invDet * cofac10;
-    result->m[1][1] = invDet * cofac11;
-    result->m[1][2] = invDet * cofac12;
-    result->m[1][3] = 0.0f;
-
-    result->m[2][0] = invDet * cofac20;
-    result->m[2][1] = invDet * cofac21;
-    result->m[2][2] = invDet * cofac22;
-    result->m[2][3] = 0.0f;
+    float cofac01 = matrix.m[0][2] * matrix.m[2][1] - matrix.m[0][1] * matrix.m[2][2];
+    float cofac02 = matrix.m[0][1] * matrix.m[1][2] - matrix.m[0][2] * matrix.m[1][1];
+    float cofac11 = matrix.m[0][0] * matrix.m[2][2] - matrix.m[0][2] * matrix.m[2][0];
+    float cofac12 = matrix.m[0][2] * matrix.m[1][0] - matrix.m[0][0] * matrix.m[1][2];
+    float cofac21 = matrix.m[0][1] * matrix.m[2][0] - matrix.m[0][0] * matrix.m[2][1];
+    float cofac22 = matrix.m[0][0] * matrix.m[1][1] - matrix.m[0][1] * matrix.m[1][0];
+
+    result.m[0][0] = invDet * cofac00;
+    result.m[0][1] = invDet * cofac01;
+    result.m[0][2] = invDet * cofac02;
+    result.m[0][3] = 0.0f;
+
+    result.m[1][0] = invDet * cofac10;
+    result.m[1][1] = invDet * cofac11;
+    result.m[1][2] = invDet * cofac12;
+    result.m[1][3] = 0.0f;
+
+    result.m[2][0] = invDet * cofac20;
+    result.m[2][1] = invDet * cofac21;
+    result.m[2][2] = invDet * cofac22;
+    result.m[2][3] = 0.0f;
 
     return result;
   }
diff --git a/wiki/Building-From-Source.md b/wiki/Building-From-Source.md
index 4d42edd98d..e395402641 100644
--- a/wiki/Building-From-Source.md
+++ b/wiki/Building-From-Source.md
@@ -36,7 +36,7 @@ If you are on Linux, install these additional packages:
 * **Debian 12 / Ubuntu 20.04 / Pop!\_OS 20.04**
   
   ```bash
-  sudo apt install build-essential pkg-config libclang-dev libssl-dev libasound2-dev libjack-dev libgtk-3-dev libvulkan-dev libunwind-dev gcc yasm nasm curl libx264-dev libx265-dev libxcb-render0-dev libxcb-shape0-dev libxcb-xfixes0-dev libspeechd-dev libxkbcommon-dev libdrm-dev libva-dev libvulkan-dev vulkan-headers
+  sudo apt install pulseaudio-utils build-essential pkg-config libclang-dev libssl-dev libasound2-dev libjack-dev libgtk-3-dev libvulkan-dev libunwind-dev gcc yasm nasm curl libx264-dev libx265-dev libxcb-render0-dev libxcb-shape0-dev libxcb-xfixes0-dev libspeechd-dev libxkbcommon-dev libdrm-dev libva-dev libvulkan-dev vulkan-headers
   ```
 
 * **Fedora**