diff --git a/indra/newview/app_settings/settings.xml b/indra/newview/app_settings/settings.xml
index 4506ee6e0cdbc820df767ac2e3e40f6d37e4837e..682189fceab1e5e5b3eef5f97cb776c0debce0a9 100644
--- a/indra/newview/app_settings/settings.xml
+++ b/indra/newview/app_settings/settings.xml
@@ -3578,17 +3578,6 @@
       <key>Value</key>
       <integer>0</integer>
     </map>
-    <key>FullScreen</key>
-    <map>
-      <key>Comment</key>
-      <string>Run SL in fullscreen mode</string>
-      <key>Persist</key>
-      <integer>1</integer>
-      <key>Type</key>
-      <string>Boolean</string>
-      <key>Value</key>
-      <integer>0</integer>
-    </map>
     <key>FullScreenAspectRatio</key>
     <map>
       <key>Comment</key>
@@ -3598,7 +3587,7 @@
       <key>Type</key>
       <string>F32</string>
       <key>Value</key>
-      <real>1.33329999447</real>
+      <real>3</real>
     </map>
     <key>FullScreenAutoDetectAspectRatio</key>
     <map>
@@ -3609,29 +3598,7 @@
       <key>Type</key>
       <string>Boolean</string>
       <key>Value</key>
-      <integer>1</integer>
-    </map>
-    <key>FullScreenHeight</key>
-    <map>
-      <key>Comment</key>
-      <string>Fullscreen resolution in height</string>
-      <key>Persist</key>
-      <integer>1</integer>
-      <key>Type</key>
-      <string>S32</string>
-      <key>Value</key>
-      <integer>768</integer>
-    </map>
-    <key>FullScreenWidth</key>
-    <map>
-      <key>Comment</key>
-      <string>Fullscreen resolution in width</string>
-      <key>Persist</key>
-      <integer>1</integer>
-      <key>Type</key>
-      <string>S32</string>
-      <key>Value</key>
-      <integer>1024</integer>
+      <integer>0</integer>
     </map>
     <key>GesturesMarketplaceURL</key>
     <map>
diff --git a/indra/newview/llappviewer.cpp b/indra/newview/llappviewer.cpp
index f4004d5664c7d83da641d203d4a3d4d52d8e3610..475f6649174a3bbb1e07fad7cb5dc6f71d393dad 100644
--- a/indra/newview/llappviewer.cpp
+++ b/indra/newview/llappviewer.cpp
@@ -2366,16 +2366,9 @@ bool LLAppViewer::initWindow()
 
 	LLNotificationsUI::LLNotificationManager::getInstance();
 		
-	if (gSavedSettings.getBOOL("FullScreen"))
-	{
-		// request to go full screen... which will be delayed until login
-		gViewerWindow->toggleFullscreen(FALSE);
-	}
-	
 	if (gSavedSettings.getBOOL("WindowMaximized"))
 	{
 		gViewerWindow->mWindow->maximize();
-		gViewerWindow->getWindow()->setNativeAspectRatio(gSavedSettings.getF32("FullScreenAspectRatio"));
 	}
 
 	if (!gNoRender)
@@ -2449,11 +2442,10 @@ void LLAppViewer::cleanupSavedSettings()
 		}
 	}
 
-	// save window position if not fullscreen
+	// save window position if not maximized
 	// as we don't track it in callbacks
-	BOOL fullscreen = gViewerWindow->mWindow->getFullscreen();
 	BOOL maximized = gViewerWindow->mWindow->getMaximized();
-	if (!fullscreen && !maximized)
+	if (!maximized)
 	{
 		LLCoordScreen window_pos;
 
diff --git a/indra/newview/llchatbar.cpp b/indra/newview/llchatbar.cpp
index 67d5d21b2abe5632521da8ebed2e59bd490e2088..cd279fa10a0dc3220a430825593689f106d43da8 100644
--- a/indra/newview/llchatbar.cpp
+++ b/indra/newview/llchatbar.cpp
@@ -149,7 +149,6 @@ BOOL LLChatBar::handleKeyHere( KEY key, MASK mask )
 {
 	BOOL handled = FALSE;
 
-	// ALT-RETURN is reserved for windowed/fullscreen toggle
 	if( KEY_RETURN == key )
 	{
 		if (mask == MASK_CONTROL)
diff --git a/indra/newview/llfloaterhardwaresettings.cpp b/indra/newview/llfloaterhardwaresettings.cpp
index b2564eb2b65ea39d640915537454f4ee9ae30d5e..480e4ce3a4b1e9afcb7ea325cd6600ad2f333d36 100644
--- a/indra/newview/llfloaterhardwaresettings.cpp
+++ b/indra/newview/llfloaterhardwaresettings.cpp
@@ -143,10 +143,9 @@ void LLFloaterHardwareSettings::apply()
 		LLWindow* window = gViewerWindow->getWindow();
 		LLCoordScreen size;
 		window->getSize(&size);
-		gViewerWindow->changeDisplaySettings(window->getFullscreen(), 
-														size,
-														gSavedSettings.getBOOL("DisableVerticalSync"),
-														logged_in);
+		gViewerWindow->changeDisplaySettings(size,
+											gSavedSettings.getBOOL("DisableVerticalSync"),
+											logged_in);
 	}
 	else if (old_anisotropic != LLImageGL::sGlobalUseAnisotropic)
 	{
diff --git a/indra/newview/llfloaterpreference.cpp b/indra/newview/llfloaterpreference.cpp
index 2299cd719c49b6c4a8bcbd6a30cf9e36f4cddff2..88339c55e8c2b7c060f29a5c15856434b171f4c3 100644
--- a/indra/newview/llfloaterpreference.cpp
+++ b/indra/newview/llfloaterpreference.cpp
@@ -466,7 +466,7 @@ void LLFloaterPreference::apply()
 		}
 	}
 
-	applyResolution();
+	//applyResolution();
 }
 
 void LLFloaterPreference::cancel()
@@ -1216,21 +1216,8 @@ void LLFloaterPreference::updateSliderText(LLSliderCtrl* ctrl, LLTextBox* text_b
 void LLFloaterPreference::applyResolution()
 {
 	gGL.flush();
-	
-	// Screen resolution
-	S32 num_resolutions;
-	LLWindow::LLWindowResolution* supported_resolutions = 
-	gViewerWindow->getWindow()->getSupportedResolutions(num_resolutions);
-	S32 resIndex = getChild<LLComboBox>("fullscreen combo")->getCurrentIndex();
-	if (resIndex == -1)
-	{
-		// use highest resolution if nothing selected
-		resIndex = num_resolutions - 1;
-	}
-	gSavedSettings.setS32("FullScreenWidth", supported_resolutions[resIndex].mWidth);
-	gSavedSettings.setS32("FullScreenHeight", supported_resolutions[resIndex].mHeight);
-	
-	gViewerWindow->requestResolutionUpdate(gSavedSettings.getBOOL("FullScreen"));
+		
+	gViewerWindow->requestResolutionUpdate();
 	
 	send_agent_update(TRUE);
 	
diff --git a/indra/newview/llnearbychatbar.cpp b/indra/newview/llnearbychatbar.cpp
index 46f531fdd976cdf8fa5794dc9f27a2fd0692de7a..a300e15edda3854378cf10147aa404885106f10d 100644
--- a/indra/newview/llnearbychatbar.cpp
+++ b/indra/newview/llnearbychatbar.cpp
@@ -433,7 +433,6 @@ BOOL LLNearbyChatBar::handleKeyHere( KEY key, MASK mask )
 {
 	BOOL handled = FALSE;
 
-	// ALT-RETURN is reserved for windowed/fullscreen toggle
 	if( KEY_RETURN == key && mask == MASK_CONTROL)
 	{
 		// shout
diff --git a/indra/newview/llstartup.cpp b/indra/newview/llstartup.cpp
index 9bfcceab2f5002e82688e4ab2c1d6a2d02ad5ef9..dbfb0ec4aba75c814118651f2ac24d2afa5be285 100644
--- a/indra/newview/llstartup.cpp
+++ b/indra/newview/llstartup.cpp
@@ -2638,12 +2638,6 @@ void reset_login()
 
 //---------------------------------------------------------------------------
 
-
-bool LLStartUp::canGoFullscreen()
-{
-	return gStartupState >= STATE_WORLD_INIT;
-}
-
 // Initialize all plug-ins except the web browser (which was initialized
 // early, before the login screen). JC
 void LLStartUp::multimediaInit()
diff --git a/indra/newview/llstartup.h b/indra/newview/llstartup.h
index e1e108ca6accc0265adecc67fe66bb95b3618f15..b2868378bcc5bd4565a5f30c71dbbf2ce54f362f 100644
--- a/indra/newview/llstartup.h
+++ b/indra/newview/llstartup.h
@@ -81,9 +81,6 @@ extern LLPointer<LLViewerTexture> gStartTexture;
 class LLStartUp
 {
 public:
-	static bool canGoFullscreen();
-		// returns true if we are far enough along in startup to allow
-		// going full screen
 
 	// Always use this to set gStartupState so changes are logged
 	static void setStartupState( EStartupState state );
diff --git a/indra/newview/lltoolbar.cpp b/indra/newview/lltoolbar.cpp
index 404eab9249b7a8b8e33eed79be614dfdebcc7aec..d45915499afd6744fdd5f7fea944246718957618 100644
--- a/indra/newview/lltoolbar.cpp
+++ b/indra/newview/lltoolbar.cpp
@@ -212,23 +212,16 @@ void LLToolBar::layoutButtons()
 	// this function may be called before postBuild(), in which case mResizeHandle won't have been set up yet.
 	if(mResizeHandle != NULL)
 	{
-		if(!gViewerWindow->getWindow()->getFullscreen())
-		{
-			// Only when running in windowed mode on the Mac, leave room for a resize widget on the right edge of the bar.
-			width -= RESIZE_HANDLE_WIDTH;
-
-			LLRect r;
-			r.mLeft = width - pad;
-			r.mBottom = 0;
-			r.mRight = r.mLeft + RESIZE_HANDLE_WIDTH;
-			r.mTop = r.mBottom + RESIZE_HANDLE_HEIGHT;
-			mResizeHandle->setRect(r);
-			mResizeHandle->setVisible(TRUE);
-		}
-		else
-		{
-			mResizeHandle->setVisible(FALSE);
-		}
+		// Only when running in windowed mode on the Mac, leave room for a resize widget on the right edge of the bar.
+		width -= RESIZE_HANDLE_WIDTH;
+
+		LLRect r;
+		r.mLeft = width - pad;
+		r.mBottom = 0;
+		r.mRight = r.mLeft + RESIZE_HANDLE_WIDTH;
+		r.mTop = r.mBottom + RESIZE_HANDLE_HEIGHT;
+		mResizeHandle->setRect(r);
+		mResizeHandle->setVisible(TRUE);
 	}
 #endif // LL_DARWIN
 }
diff --git a/indra/newview/lltoolgrab.cpp b/indra/newview/lltoolgrab.cpp
index cae5e9354560674d00ca23c6f168796ec8aa8b27..9bd08287f38adbc67556835b4a406c0591c46ec7 100644
--- a/indra/newview/lltoolgrab.cpp
+++ b/indra/newview/lltoolgrab.cpp
@@ -886,28 +886,6 @@ void LLToolGrab::handleHoverNonPhysical(S32 x, S32 y, MASK mask)
 // Not dragging.  Just showing affordances
 void LLToolGrab::handleHoverInactive(S32 x, S32 y, MASK mask)
 {
-	const F32 ROTATE_ANGLE_PER_SECOND = 40.f * DEG_TO_RAD;
-	const F32 rotate_angle = ROTATE_ANGLE_PER_SECOND / gFPSClamped;
-
-	// Look for cursor against the edge of the screen
-	// Only works in fullscreen
-	if (gSavedSettings.getBOOL("FullScreen"))
-	{
-		if (gAgentCamera.cameraThirdPerson() )
-		{
-			if (x == 0)
-			{
-				gAgent.yaw(rotate_angle);
-				//gAgent.setControlFlags(AGENT_CONTROL_YAW_POS);
-			}
-			else if (x == (gViewerWindow->getWorldViewWidthScaled() - 1) )
-			{
-				gAgent.yaw(-rotate_angle);
-				//gAgent.setControlFlags(AGENT_CONTROL_YAW_NEG);
-			}
-		}
-	}
-
 	// JC - TODO - change cursor based on gGrabBtnVertical, gGrabBtnSpin
 	lldebugst(LLERR_USER_INPUT) << "hover handled by LLToolGrab (inactive-not over editable object)" << llendl;		
 	gViewerWindow->setCursor(UI_CURSOR_TOOLGRAB);
diff --git a/indra/newview/llviewermenu.cpp b/indra/newview/llviewermenu.cpp
index 2c7ae539ce7b5ce62869f658ba81e0ef4512e741..ee766c262af8bee40906ed463750e66c10871124 100644
--- a/indra/newview/llviewermenu.cpp
+++ b/indra/newview/llviewermenu.cpp
@@ -3788,17 +3788,6 @@ class LLViewMouselook : public view_listener_t
 	}
 };
 
-class LLViewFullscreen : public view_listener_t
-{
-	bool handleEvent(const LLSD& userdata)
-	{
-		// we no longer permit full screen mode EXT-6775
-		// gViewerWindow->toggleFullscreen(TRUE);
-		llwarns << "full screen mode no longer supported" << llendl;
-		return true;
-	}
-};
-
 class LLViewDefaultUISize : public view_listener_t
 {
 	bool handleEvent(const LLSD& userdata)
@@ -7783,7 +7772,6 @@ void initialize_menus()
 	view_listener_t::addMenu(new LLZoomer(1.2f), "View.ZoomOut");
 	view_listener_t::addMenu(new LLZoomer(1/1.2f), "View.ZoomIn");
 	view_listener_t::addMenu(new LLZoomer(DEFAULT_FIELD_OF_VIEW, false), "View.ZoomDefault");
-	view_listener_t::addMenu(new LLViewFullscreen(), "View.Fullscreen");
 	view_listener_t::addMenu(new LLViewDefaultUISize(), "View.DefaultUISize");
 
 	view_listener_t::addMenu(new LLViewEnableMouselook(), "View.EnableMouselook");
diff --git a/indra/newview/llviewerwindow.cpp b/indra/newview/llviewerwindow.cpp
index 0a65cb7330f45ea77f9f91f38b52da0e0874a71b..ebc42aa5d2827b60f76a84c0ddf06d9a41d9cae8 100644
--- a/indra/newview/llviewerwindow.cpp
+++ b/indra/newview/llviewerwindow.cpp
@@ -1118,28 +1118,7 @@ BOOL LLViewerWindow::handleActivate(LLWindow *window, BOOL activated)
 		mActive = TRUE;
 		send_agent_resume();
 		gAgent.clearAFK();
-		if (mWindow->getFullscreen() && !mIgnoreActivate)
-		{
-			if (!LLApp::isExiting() )
-			{
-				if (LLStartUp::getStartupState() >= STATE_STARTED)
-				{
-					// if we're in world, show a progress bar to hide reloading of textures
-					llinfos << "Restoring GL during activate" << llendl;
-					restoreGL(LLTrans::getString("ProgressRestoring"));
-				}
-				else
-				{
-					// otherwise restore immediately
-					restoreGL();
-				}
-			}
-			else
-			{
-				llwarns << "Activating while quitting" << llendl;
-			}
-		}
-
+		
 		// Unmute audio
 		audio_update_volume();
 	}
@@ -1159,12 +1138,7 @@ BOOL LLViewerWindow::handleActivate(LLWindow *window, BOOL activated)
 		}
 		
 		send_agent_pause();
-		
-		if (mWindow->getFullscreen() && !mIgnoreActivate)
-		{
-			llinfos << "Stopping GL during deactivation" << llendl;
-			stopGL();
-		}
+	
 		// Mute audio
 		audio_update_volume();
 	}
@@ -1331,12 +1305,10 @@ LLViewerWindow::LLViewerWindow(
 	const std::string& title, const std::string& name,
 	S32 x, S32 y,
 	S32 width, S32 height,
-	BOOL fullscreen, BOOL ignore_pixel_depth)
+	BOOL fullscreen, BOOL ignore_pixel_depth) // fullscreen is no longer used
 	:
 	mWindow(NULL),
 	mActive(TRUE),
-	mWantFullscreen(fullscreen),
-	mShowFullscreenProgress(FALSE),
 	mWindowRectRaw(0, height, width, 0),
 	mWindowRectScaled(0, height, width, 0),
 	mWorldViewRectRaw(0, height, width, 0),
@@ -1351,7 +1323,6 @@ LLViewerWindow::LLViewerWindow(
 	mIgnoreActivate( FALSE ),
 	mResDirty(false),
 	mStatesDirty(false),
-	mIsFullscreenChecked(false),
 	mCurrResolutionIndex(0),
     mViewerWindowListener(new LLViewerWindowListener(this)),
 	mProgressView(NULL)
@@ -1911,24 +1882,17 @@ void LLViewerWindow::reshape(S32 width, S32 height)
 
 		sendShapeToSim();
 
-
-		// store the mode the user wants (even if not there yet)
-		gSavedSettings.setBOOL("FullScreen", mWantFullscreen);
-
 		// store new settings for the mode we are in, regardless
-		if (!mWindow->getFullscreen())
-		{
-			// Only save size if not maximized
-			BOOL maximized = mWindow->getMaximized();
-			gSavedSettings.setBOOL("WindowMaximized", maximized);
+		// Only save size if not maximized
+		BOOL maximized = mWindow->getMaximized();
+		gSavedSettings.setBOOL("WindowMaximized", maximized);
 
-			LLCoordScreen window_size;
-			if (!maximized
-				&& mWindow->getSize(&window_size))
-			{
-				gSavedSettings.setS32("WindowWidth", window_size.mX);
-				gSavedSettings.setS32("WindowHeight", window_size.mY);
-			}
+		LLCoordScreen window_size;
+		if (!maximized
+			&& mWindow->getSize(&window_size))
+		{
+			gSavedSettings.setS32("WindowWidth", window_size.mX);
+			gSavedSettings.setS32("WindowHeight", window_size.mY);
 		}
 
 		LLViewerStats::getInstance()->setStat(LLViewerStats::ST_WINDOW_WIDTH, (F64)width);
@@ -3806,18 +3770,7 @@ void LLViewerWindow::movieSize(S32 new_width, S32 new_height)
 		BORDERHEIGHT = size.mY- y;
 		LLCoordScreen new_size(new_width + BORDERWIDTH, 
 							   new_height + BORDERHEIGHT);
-		BOOL disable_sync = gSavedSettings.getBOOL("DisableVerticalSync");
-		if (gViewerWindow->mWindow->getFullscreen())
-		{
-			gViewerWindow->changeDisplaySettings(FALSE, 
-												new_size, 
-												disable_sync, 
-												TRUE);
-		}
-		else
-		{
-			gViewerWindow->mWindow->setSize(new_size);
-		}
+		gViewerWindow->mWindow->setSize(new_size);
 	}
 }
 
@@ -4603,51 +4556,12 @@ void LLViewerWindow::initFonts(F32 zoom_factor)
 	LLFontGL::loadDefaultFonts();
 }
 
-void LLViewerWindow::toggleFullscreen(BOOL show_progress)
-{
-	if (mWindow)
-	{
-		mWantFullscreen = mWindow->getFullscreen() ? FALSE : TRUE;
-		mIsFullscreenChecked =  mWindow->getFullscreen() ? FALSE : TRUE;
-		mShowFullscreenProgress = show_progress;
-	}
-}
-
-void LLViewerWindow::getTargetWindow(BOOL& fullscreen, S32& width, S32& height) const
-{
-	fullscreen = mWantFullscreen;
-	
-	if (mWindow
-	&&  mWindow->getFullscreen() == mWantFullscreen)
-	{
-		width = getWindowWidthRaw();
-		height = getWindowHeightRaw();
-	}
-	else if (mWantFullscreen)
-	{
-		width = gSavedSettings.getS32("FullScreenWidth");
-		height = gSavedSettings.getS32("FullScreenHeight");
-	}
-	else
-	{
-		width = gSavedSettings.getS32("WindowWidth");
-		height = gSavedSettings.getS32("WindowHeight");
-	}
-}
-
 void LLViewerWindow::requestResolutionUpdate()
 {
 	mResDirty = true;
 }
 
-void LLViewerWindow::requestResolutionUpdate(bool fullscreen_checked)
-{
-	mResDirty = true;
-	mWantFullscreen = fullscreen_checked;
-	mIsFullscreenChecked = fullscreen_checked;
-}
-
-BOOL LLViewerWindow::checkSettings()
+void LLViewerWindow::checkSettings()
 {
 	if (mStatesDirty)
 	{
@@ -4659,70 +4573,9 @@ BOOL LLViewerWindow::checkSettings()
 	// We want to update the resolution AFTER the states getting refreshed not before.
 	if (mResDirty)
 	{
-		if (gSavedSettings.getBOOL("FullScreenAutoDetectAspectRatio"))
-		{
-			getWindow()->setNativeAspectRatio(0.f);
-		}
-		else
-		{
-			getWindow()->setNativeAspectRatio(gSavedSettings.getF32("FullScreenAspectRatio"));
-		}
-		
 		reshape(getWindowWidthRaw(), getWindowHeightRaw());
-
-		// force aspect ratio
-		if (mIsFullscreenChecked)
-		{
-			LLViewerCamera::getInstance()->setAspect( getWorldViewAspectRatio() );
-		}
-
 		mResDirty = false;
-	}
-		
-	BOOL is_fullscreen = mWindow->getFullscreen();
-	if(mWantFullscreen)
-	{
-		LLCoordScreen screen_size;
-		LLCoordScreen desired_screen_size(gSavedSettings.getS32("FullScreenWidth"),
-								   gSavedSettings.getS32("FullScreenHeight"));
-		getWindow()->getSize(&screen_size);
-		if(!is_fullscreen || 
-		    screen_size.mX != desired_screen_size.mX 
-			|| screen_size.mY != desired_screen_size.mY)
-		{
-			if (!LLStartUp::canGoFullscreen())
-			{
-				return FALSE;
-			}
-			
-			LLGLState::checkStates();
-			LLGLState::checkTextureChannels();
-			changeDisplaySettings(TRUE, 
-								  desired_screen_size,
-								  gSavedSettings.getBOOL("DisableVerticalSync"),
-								  mShowFullscreenProgress);
-
-			LLGLState::checkStates();
-			LLGLState::checkTextureChannels();
-			mStatesDirty = true;
-			return TRUE;
-		}
-	}
-	else
-	{
-		if(is_fullscreen)
-		{
-			// Changing to windowed mode.
-			changeDisplaySettings(FALSE, 
-								  LLCoordScreen(gSavedSettings.getS32("WindowWidth"),
-												gSavedSettings.getS32("WindowHeight")),
-								  TRUE,
-								  mShowFullscreenProgress);
-			mStatesDirty = true;
-			return TRUE;
-		}
-	}
-	return FALSE;
+	}	
 }
 
 void LLViewerWindow::restartDisplay(BOOL show_progress_bar)
@@ -4739,38 +4592,23 @@ void LLViewerWindow::restartDisplay(BOOL show_progress_bar)
 	}
 }
 
-BOOL LLViewerWindow::changeDisplaySettings(BOOL fullscreen, LLCoordScreen size, BOOL disable_vsync, BOOL show_progress_bar)
+BOOL LLViewerWindow::changeDisplaySettings(LLCoordScreen size, BOOL disable_vsync, BOOL show_progress_bar)
 {
 	BOOL was_maximized = gSavedSettings.getBOOL("WindowMaximized");
-	mWantFullscreen = fullscreen;
-	mShowFullscreenProgress = show_progress_bar;
-	gSavedSettings.setBOOL("FullScreen", mWantFullscreen);
 
 	//gResizeScreenTexture = TRUE;
 
-	BOOL old_fullscreen = mWindow->getFullscreen();
-	if (!old_fullscreen && fullscreen && !LLStartUp::canGoFullscreen())
-	{
-		// Not allowed to switch to fullscreen now, so exit early.
-		// *NOTE: This case should never be reached, but just-in-case.
-		return TRUE;
-	}
-
 	U32 fsaa = gSavedSettings.getU32("RenderFSAASamples");
 	U32 old_fsaa = mWindow->getFSAASamples();
-	// going from windowed to windowed
-	if (!old_fullscreen && !fullscreen)
+	// if not maximized, use the request size
+	if (!mWindow->getMaximized())
 	{
-		// if not maximized, use the request size
-		if (!mWindow->getMaximized())
-		{
-			mWindow->setSize(size);
-		}
+		mWindow->setSize(size);
+	}
 
-		if (fsaa == old_fsaa)
-		{
-			return TRUE;
-		}
+	if (fsaa == old_fsaa)
+	{
+		return TRUE;
 	}
 
 	// Close floaters that don't handle settings change
@@ -4787,23 +4625,15 @@ BOOL LLViewerWindow::changeDisplaySettings(BOOL fullscreen, LLCoordScreen size,
 	LLCoordScreen old_size;
 	LLCoordScreen old_pos;
 	mWindow->getSize(&old_size);
-	BOOL got_position = mWindow->getPosition(&old_pos);
 
-	if (!old_fullscreen && fullscreen && got_position)
-	{
-		// switching from windowed to fullscreen, so save window position
-		gSavedSettings.setS32("WindowX", old_pos.mX);
-		gSavedSettings.setS32("WindowY", old_pos.mY);
-	}
-	
 	mWindow->setFSAASamples(fsaa);
 
-	result_first_try = mWindow->switchContext(fullscreen, size, disable_vsync);
+	result_first_try = mWindow->switchContext(false, size, disable_vsync);
 	if (!result_first_try)
 	{
 		// try to switch back
 		mWindow->setFSAASamples(old_fsaa);
-		result_second_try = mWindow->switchContext(old_fullscreen, old_size, disable_vsync);
+		result_second_try = mWindow->switchContext(false, old_size, disable_vsync);
 
 		if (!result_second_try)
 		{
@@ -4835,19 +4665,8 @@ BOOL LLViewerWindow::changeDisplaySettings(BOOL fullscreen, LLCoordScreen size,
 	}
 
 	BOOL success = result_first_try || result_second_try;
-	if (success)
-	{
-#if LL_WINDOWS
-		// Only trigger a reshape after switching to fullscreen; otherwise rely on the windows callback
-		// (otherwise size is wrong; this is the entire window size, reshape wants the visible window size)
-		if (fullscreen && result_first_try)
-#endif
-		{
-			reshape(size.mX, size.mY);
-		}
-	}
 
-	if (!mWindow->getFullscreen() && success)
+	if (success)
 	{
 		// maximize window if was maximized, else reposition
 		if (was_maximized)
@@ -4865,45 +4684,14 @@ BOOL LLViewerWindow::changeDisplaySettings(BOOL fullscreen, LLCoordScreen size,
 
 	mIgnoreActivate = FALSE;
 	gFocusMgr.setKeyboardFocus(keyboard_focus);
-	mWantFullscreen = mWindow->getFullscreen();
-	mShowFullscreenProgress = FALSE;
 	
 	return success;
 }
 
-
-F32 LLViewerWindow::getDisplayAspectRatio() const
-{
-	if (mWindow->getFullscreen())
-	{
-		if (gSavedSettings.getBOOL("FullScreenAutoDetectAspectRatio"))
-		{
-			return mWindow->getNativeAspectRatio();	
-		}
-		else
-		{
-			return gSavedSettings.getF32("FullScreenAspectRatio");
-		}
-	}
-	else
-	{
-		return mWindow->getNativeAspectRatio();
-	}
-}
-
-
 F32	LLViewerWindow::getWorldViewAspectRatio() const
 {
 	F32 world_aspect = (F32)mWorldViewRectRaw.getWidth() / (F32)mWorldViewRectRaw.getHeight();
-	//F32 window_aspect = (F32)mWindowRectRaw.getWidth() / (F32)mWindowRectRaw.getHeight();
-	if (mWindow->getFullscreen())
-	{
-		return world_aspect * mWindow->getPixelAspectRatio();
-	}
-	else
-	{
-		return world_aspect;
-	}
+	return world_aspect;
 }
 
 void LLViewerWindow::calcDisplayScale()
@@ -4911,27 +4699,13 @@ void LLViewerWindow::calcDisplayScale()
 	F32 ui_scale_factor = gSavedSettings.getF32("UIScaleFactor");
 	LLVector2 display_scale;
 	display_scale.setVec(llmax(1.f / mWindow->getPixelAspectRatio(), 1.f), llmax(mWindow->getPixelAspectRatio(), 1.f));
-	F32 height_normalization = gSavedSettings.getBOOL("UIAutoScale") ? ((F32)mWindowRectRaw.getHeight() / display_scale.mV[VY]) / 768.f : 1.f;
-	if(mWindow->getFullscreen())
-	{
-		display_scale *= (ui_scale_factor * height_normalization);
-	}
-	else
-	{
-		display_scale *= ui_scale_factor;
-	}
+	display_scale *= ui_scale_factor;
 
 	// limit minimum display scale
 	if (display_scale.mV[VX] < MIN_DISPLAY_SCALE || display_scale.mV[VY] < MIN_DISPLAY_SCALE)
 	{
 		display_scale *= MIN_DISPLAY_SCALE / llmin(display_scale.mV[VX], display_scale.mV[VY]);
 	}
-
-	if (mWindow->getFullscreen())
-	{
-		display_scale.mV[0] = llround(display_scale.mV[0], 2.0f/(F32) mWindowRectRaw.getWidth());
-		display_scale.mV[1] = llround(display_scale.mV[1], 2.0f/(F32) mWindowRectRaw.getHeight());
-	}
 	
 	if (display_scale != mDisplayScale)
 	{
diff --git a/indra/newview/llviewerwindow.h b/indra/newview/llviewerwindow.h
index 410445d97fa9e53d2fcf73ddc615fbc87899982b..1e0200a075aa17dc7d56870af0a6e3141a0ff7a3 100644
--- a/indra/newview/llviewerwindow.h
+++ b/indra/newview/llviewerwindow.h
@@ -262,10 +262,6 @@ class LLViewerWindow : public LLWindowCallbacks
 	// Is window of our application frontmost?
 	BOOL			getActive() const			{ return mActive; }
 
-	void			getTargetWindow(BOOL& fullscreen, S32& width, S32& height) const;
-		// The 'target' is where the user wants the window to be. It may not be
-		// there yet, because we may be supressing fullscreen prior to login.
-
 	const std::string&	getInitAlert() { return mInitAlert; }
 	
 	//
@@ -380,17 +376,12 @@ class LLViewerWindow : public LLWindowCallbacks
 	// Prints window implementation details
 	void			dumpState();
 
-	// Request display setting changes	
-	void			toggleFullscreen(BOOL show_progress);
-
 	// handle shutting down GL and bringing it back up
-	void			requestResolutionUpdate(bool fullscreen_checked);
-	void			requestResolutionUpdate(); // doesn't affect fullscreen
-	BOOL			checkSettings();
+	void			requestResolutionUpdate();
+	void			checkSettings();
 	void			restartDisplay(BOOL show_progress_bar);
-	BOOL			changeDisplaySettings(BOOL fullscreen, LLCoordScreen size, BOOL disable_vsync, BOOL show_progress_bar);
+	BOOL			changeDisplaySettings(LLCoordScreen size, BOOL disable_vsync, BOOL show_progress_bar);
 	BOOL			getIgnoreDestroyWindow() { return mIgnoreActivate; }
-	F32				getDisplayAspectRatio() const;
 	F32				getWorldViewAspectRatio() const;
 	const LLVector2& getDisplayScale() const { return mDisplayScale; }
 	void			calcDisplayScale();
@@ -415,8 +406,6 @@ class LLViewerWindow : public LLWindowCallbacks
 
 protected:
 	BOOL			mActive;
-	BOOL			mWantFullscreen;
-	BOOL			mShowFullscreenProgress;
 
 	LLRect			mWindowRectRaw;				// whole window, including UI
 	LLRect			mWindowRectScaled;			// whole window, scaled by UI size
@@ -470,7 +459,6 @@ class LLViewerWindow : public LLWindowCallbacks
 	
 	bool			mResDirty;
 	bool			mStatesDirty;
-	bool			mIsFullscreenChecked; // Did the user check the fullscreen checkbox in the display settings
 	U32			mCurrResolutionIndex;
 
     boost::scoped_ptr<LLViewerWindowListener> mViewerWindowListener;