diff --git a/src/draw.c b/src/draw.c
index 3ee0668..f3e3a6a 100644
--- a/src/draw.c
+++ b/src/draw.c
@@ -141,10 +141,11 @@ static struct color layout_get_sepcolor(struct colored_layout *cl,
 
 static void layout_setup_pango(PangoLayout *layout, int width)
 {
+        int scale = output->get_scale();
         pango_layout_set_wrap(layout, PANGO_WRAP_WORD_CHAR);
-        pango_layout_set_width(layout, width * PANGO_SCALE);
+        pango_layout_set_width(layout, width * scale * PANGO_SCALE);
         pango_layout_set_font_description(layout, pango_fdesc);
-        pango_layout_set_spacing(layout, settings.line_height * PANGO_SCALE);
+        pango_layout_set_spacing(layout, settings.line_height * scale * PANGO_SCALE);
 
         PangoAlignment align;
         switch (settings.align) {
@@ -192,9 +193,20 @@ static bool have_progress_bar(const struct notification *n)
         return (n->progress >= 0 && settings.progress_bar == true);
 }
 
+static void get_text_size(PangoLayout *l, int *w, int *h, int scale) {
+        pango_layout_get_pixel_size(l, w, h);
+        // scale the size down, because it may be rendered at higher DPI
+
+        if (w)
+                *w /= scale;
+        if (h)
+                *h /= scale;
+}
+
 static struct dimensions calculate_dimensions(GSList *layouts)
 {
         struct dimensions dim = { 0 };
+        int scale = output->get_scale();
 
         const struct screen_info *scr = output->get_active_screen();
         if (have_dynamic_width()) {
@@ -221,10 +233,10 @@ static struct dimensions calculate_dimensions(GSList *layouts)
         for (GSList *iter = layouts; iter; iter = iter->next) {
                 struct colored_layout *cl = iter->data;
                 int w=0,h=0;
-                pango_layout_get_pixel_size(cl->l, &w, &h);
+                get_text_size(cl->l, &w, &h, scale);
                 if (cl->icon) {
-                        h = MAX(cairo_image_surface_get_height(cl->icon), h);
-                        w += cairo_image_surface_get_width(cl->icon) + settings.h_padding;
+                        h = MAX(get_icon_height(cl->icon, scale), h);
+                        w += get_icon_width(cl->icon, scale) + settings.h_padding;
                 }
                 h = MAX(settings.notification_height, h + settings.padding * 2);
                 dim.h += h;
@@ -250,15 +262,15 @@ static struct dimensions calculate_dimensions(GSList *layouts)
                         w -= 2 * settings.h_padding;
                         w -= 2 * settings.frame_width;
                         if (cl->icon) {
-                                w -= cairo_image_surface_get_width(cl->icon) + get_text_icon_padding();
+                                w -= get_icon_width(cl->icon, scale) + get_text_icon_padding();
                         }
                         layout_setup_pango(cl->l, w);
 
                         /* re-read information */
-                        pango_layout_get_pixel_size(cl->l, &w, &h);
+                        get_text_size(cl->l, &w, &h, scale);
                         if (cl->icon) {
-                                h = MAX(cairo_image_surface_get_height(cl->icon), h);
-                                w += cairo_image_surface_get_width(cl->icon) + settings.h_padding;
+                                h = MAX(get_icon_height(cl->icon, scale), h);
+                                w += get_icon_width(cl->icon, scale) + settings.h_padding;
                         }
                         h = MAX(settings.notification_height, h + settings.padding * 2);
                         dim.h += h;
@@ -299,6 +311,7 @@ static struct colored_layout *layout_init_shared(cairo_t *c, const struct notifi
 {
         struct colored_layout *cl = g_malloc(sizeof(struct colored_layout));
         cl->l = layout_create(c);
+        int scale = output->get_scale();
 
         if (!settings.word_wrap) {
                 PangoEllipsizeMode ellipsize;
@@ -346,7 +359,7 @@ static struct colored_layout *layout_init_shared(cairo_t *c, const struct notifi
                 width -= 2 * settings.h_padding;
                 width -= 2 * settings.frame_width;
                 if (cl->icon) {
-                        width -= cairo_image_surface_get_width(cl->icon) + get_text_icon_padding();
+                        width -= get_icon_width(cl->icon, scale) + get_text_icon_padding();
                 }
                 layout_setup_pango(cl->l, width);
         }
@@ -367,6 +380,7 @@ static struct colored_layout *layout_from_notification(cairo_t *c, struct notifi
 {
 
         struct colored_layout *cl = layout_init_shared(c, n);
+        int scale = output->get_scale();
 
         /* markup */
         GError *err = NULL;
@@ -388,8 +402,8 @@ static struct colored_layout *layout_from_notification(cairo_t *c, struct notifi
         }
 
 
-        pango_layout_get_pixel_size(cl->l, NULL, &(n->displayed_height));
-        if (cl->icon) n->displayed_height = MAX(cairo_image_surface_get_height(cl->icon), n->displayed_height);
+        get_text_size(cl->l, NULL, &(n->displayed_height), scale);
+        if (cl->icon) n->displayed_height = MAX(get_icon_height(cl->icon, scale), n->displayed_height);
 
         n->displayed_height = n->displayed_height + settings.padding * 2;
 
@@ -435,14 +449,14 @@ static GSList *create_layouts(cairo_t *c)
 }
 
 
-static int layout_get_height(struct colored_layout *cl)
+static int layout_get_height(struct colored_layout *cl, int scale)
 {
         int h;
         int h_icon = 0;
         int h_progress_bar = 0;
-        pango_layout_get_pixel_size(cl->l, NULL, &h);
+        get_text_size(cl->l, NULL, &h, scale);
         if (cl->icon)
-                h_icon = cairo_image_surface_get_height(cl->icon);
+                h_icon = get_icon_height(cl->icon, scale);
         if (have_progress_bar(cl->n)){
                 h_progress_bar = settings.progress_bar_height + settings.padding;
         }
@@ -482,8 +496,14 @@ static int frame_internal_radius (int r, int w, int h)
  * The top corners will get rounded by `corner_radius`, if `first` is set.
  * Respectably the same for `last` with the bottom corners.
  */
-void draw_rounded_rect(cairo_t *c, int x, int y, int width, int height, int corner_radius, bool first, bool last)
+void draw_rounded_rect(cairo_t *c, int x, int y, int width, int height, int corner_radius, int scale, bool first, bool last)
 {
+        width *= scale;
+        height *= scale;
+        x *= scale;
+        y *= scale;
+        corner_radius *= scale;
+
         const float degrees = M_PI / 180.0;
 
         cairo_new_sub_path(c);
@@ -531,6 +551,13 @@ void draw_rounded_rect(cairo_t *c, int x, int y, int width, int height, int corn
         cairo_close_path(c);
 }
 
+/**
+ * A small wrapper around cairo_rectange for drawing a scaled rectangle.
+ */
+void draw_rect(cairo_t *c, int x, int y, int width, int height, int scale) {
+        cairo_rectangle(c, x * scale, y * scale, width * scale, height * scale);
+}
+
 static cairo_surface_t *render_background(cairo_surface_t *srf,
                                           struct colored_layout *cl,
                                           struct colored_layout *cl_next,
@@ -540,7 +567,8 @@ static cairo_surface_t *render_background(cairo_surface_t *srf,
                                           int corner_radius,
                                           bool first,
                                           bool last,
-                                          int *ret_width)
+                                          int *ret_width,
+                                          int scale)
 {
         int x = 0;
         int radius_int = corner_radius;
@@ -560,7 +588,7 @@ static cairo_surface_t *render_background(cairo_surface_t *srf,
         else
                 height += settings.separator_height;
 
-        draw_rounded_rect(c, x, y, width, height, corner_radius, first, last);
+        draw_rounded_rect(c, x, y, width, height, corner_radius, scale, first, last);
 
         /* adding frame */
         x += settings.frame_width;
@@ -578,11 +606,11 @@ static cairo_surface_t *render_background(cairo_surface_t *srf,
 
         radius_int = frame_internal_radius(corner_radius, settings.frame_width, height);
 
-        draw_rounded_rect(c, x, y, width, height, radius_int, first, last);
+        draw_rounded_rect(c, x, y, width, height, radius_int, scale, first, last);
         cairo_set_source_rgba(c, cl->frame.r, cl->frame.g, cl->frame.b, cl->frame.a);
         cairo_fill(c);
 
-        draw_rounded_rect(c, x, y, width, height, radius_int, first, last);
+        draw_rounded_rect(c, x, y, width, height, radius_int, scale, first, last);
         cairo_set_source_rgba(c, cl->bg.r, cl->bg.g, cl->bg.b, cl->bg.a);
         cairo_fill(c);
 
@@ -594,7 +622,7 @@ static cairo_surface_t *render_background(cairo_surface_t *srf,
                 struct color sep_color = layout_get_sepcolor(cl, cl_next);
                 cairo_set_source_rgba(c, sep_color.r, sep_color.g, sep_color.b, sep_color.a);
 
-                cairo_rectangle(c, settings.frame_width, y + height, width, settings.separator_height);
+                draw_rect(c, settings.frame_width, y + height, width, settings.separator_height, scale);
 
                 cairo_fill(c);
         }
@@ -604,18 +632,18 @@ static cairo_surface_t *render_background(cairo_surface_t *srf,
         if (ret_width)
                 *ret_width = width;
 
-        return cairo_surface_create_for_rectangle(srf, x, y, width, height);
+        return cairo_surface_create_for_rectangle(srf, x * scale, y * scale, width * scale, height * scale);
 }
 
-static void render_content(cairo_t *c, struct colored_layout *cl, int width)
+static void render_content(cairo_t *c, struct colored_layout *cl, int width, int scale)
 {
-        const int h = layout_get_height(cl);
+        const int h = layout_get_height(cl, scale);
         int h_without_progress_bar = h;
         if (have_progress_bar(cl->n)){
                  h_without_progress_bar -= settings.progress_bar_height + settings.padding;
         }
         int h_text;
-        pango_layout_get_pixel_size(cl->l, NULL, &h_text);
+        get_text_size(cl->l, NULL, &h_text, scale);
 
         int text_x = settings.h_padding,
             text_y = settings.padding + h_without_progress_bar / 2 - h_text / 2;
@@ -633,10 +661,10 @@ static void render_content(cairo_t *c, struct colored_layout *cl, int width)
 
                 // icon position
                 if (settings.icon_position == ICON_LEFT) {
-                        text_x = cairo_image_surface_get_width(cl->icon) + settings.h_padding + get_text_icon_padding();
+                        text_x = get_icon_width(cl->icon, scale) + settings.h_padding + get_text_icon_padding();
                 } // else ICON_RIGHT
         }
-        cairo_move_to(c, text_x, text_y);
+        cairo_move_to(c, text_x * scale, text_y * scale);
 
         cairo_set_source_rgba(c, cl->fg.r, cl->fg.g, cl->fg.b, cl->fg.a);
         pango_cairo_update_layout(c, cl->l);
@@ -645,8 +673,8 @@ static void render_content(cairo_t *c, struct colored_layout *cl, int width)
 
         // icon positioning
         if (cl->icon) {
-                unsigned int image_width = cairo_image_surface_get_width(cl->icon),
-                             image_height = cairo_image_surface_get_height(cl->icon),
+                unsigned int image_width = get_icon_width(cl->icon, scale),
+                             image_height = get_icon_height(cl->icon, scale),
                              image_x = width - settings.h_padding - image_width,
                              image_y = settings.padding + h_without_progress_bar/2 - image_height/2;
 
@@ -664,8 +692,8 @@ static void render_content(cairo_t *c, struct colored_layout *cl, int width)
                         image_x = settings.h_padding;
                 } // else ICON_RIGHT
 
-                cairo_set_source_surface(c, cl->icon, image_x, image_y);
-                cairo_rectangle(c, image_x, image_y, image_width, image_height);
+                cairo_set_source_surface(c, cl->icon, image_x * scale, image_y * scale);
+                draw_rect(c, image_x, image_y, image_width, image_height, scale);
                 cairo_fill(c);
         }
 
@@ -689,16 +717,17 @@ static void render_content(cairo_t *c, struct colored_layout *cl, int width)
                 // Note: the bar could be drawn a bit smaller, because the frame is drawn on top
                 // left side
                 cairo_set_source_rgba(c, cl->highlight.r, cl->highlight.g, cl->highlight.b, cl->highlight.a);
-                cairo_rectangle(c, x_bar_1, frame_y, progress_width_1, progress_height);
+                draw_rect(c, x_bar_1, frame_y, progress_width_1, progress_height, scale);
                 cairo_fill(c);
                 // right side
                 cairo_set_source_rgba(c, cl->bg.r, cl->bg.g, cl->bg.b, cl->bg.a);
-                cairo_rectangle(c, x_bar_2, frame_y, progress_width_2, progress_height);
+                draw_rect(c, x_bar_2, frame_y, progress_width_2, progress_height, scale);
                 cairo_fill(c);
                 // border
                 cairo_set_source_rgba(c, cl->frame.r, cl->frame.g, cl->frame.b, cl->frame.a);
-                cairo_rectangle(c, frame_x + half_frame_width, frame_y + half_frame_width, progress_width - frame_width, progress_height);
-                cairo_set_line_width(c, frame_width);
+                // TODO draw_rect instead of cairo_rectangle resulted in blurry lines. Why?
+                cairo_rectangle(c, (frame_x + half_frame_width) * scale, (frame_y + half_frame_width) * scale, (progress_width - frame_width) * scale, progress_height * scale);
+                cairo_set_line_width(c, frame_width * scale);
                 cairo_stroke(c);
         }
 }
@@ -710,18 +739,19 @@ static struct dimensions layout_render(cairo_surface_t *srf,
                                        bool first,
                                        bool last)
 {
-        const int cl_h = layout_get_height(cl);
+        int scale = output->get_scale();
+        const int cl_h = layout_get_height(cl, scale);
 
         int h_text = 0;
-        pango_layout_get_pixel_size(cl->l, NULL, &h_text);
+        get_text_size(cl->l, NULL, &h_text, scale);
 
         int bg_width = 0;
         int bg_height = MAX(settings.notification_height, (2 * settings.padding) + cl_h);
 
-        cairo_surface_t *content = render_background(srf, cl, cl_next, dim.y, dim.w, bg_height, dim.corner_radius, first, last, &bg_width);
+        cairo_surface_t *content = render_background(srf, cl, cl_next, dim.y, dim.w, bg_height, dim.corner_radius, first, last, &bg_width, scale);
         cairo_t *c = cairo_create(content);
 
-        render_content(c, cl, bg_width);
+        render_content(c, cl, bg_width, scale);
 
         /* adding frame */
         if (first)
@@ -773,8 +803,9 @@ void draw(void)
         GSList *layouts = create_layouts(output->win_get_context(win));
 
         struct dimensions dim = calculate_dimensions(layouts);
+        int scale = output->get_scale();
 
-        cairo_surface_t *image_surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, dim.w, dim.h);
+        cairo_surface_t *image_surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, dim.w * scale, dim.h * scale);
 
         bool first = true;
         for (GSList *iter = layouts; iter; iter = iter->next) {
@@ -799,4 +830,14 @@ void draw_deinit(void)
         output->win_destroy(win);
         output->deinit();
 }
+
+int draw_get_scale(void)
+{
+        if (output) {
+                return output->get_scale();
+        } else {
+                LOG_W("Called draw_get_scale before output init");
+                return 1;
+        }
+}
 /* vim: set ft=c tabstop=8 shiftwidth=8 expandtab textwidth=0: */
diff --git a/src/draw.h b/src/draw.h
index 43303a4..e968012 100644
--- a/src/draw.h
+++ b/src/draw.h
@@ -12,9 +12,13 @@ void draw_setup(void);
 
 void draw(void);
 
-void draw_rounded_rect(cairo_t *c, int x, int y, int width, int height, int corner_radius, bool first, bool last);
+void draw_rounded_rect(cairo_t *c, int x, int y, int width, int height, int corner_radius, int scale, bool first, bool last);
+
+// TODO get rid of this function by passing scale to everything that needs it.
+int draw_get_scale(void);
 
 void draw_deinit(void);
 
+
 #endif
 /* vim: set ft=c tabstop=8 shiftwidth=8 expandtab textwidth=0: */
diff --git a/src/dunst.c b/src/dunst.c
index dad4c7c..d201fad 100644
--- a/src/dunst.c
+++ b/src/dunst.c
@@ -24,6 +24,7 @@
 GMainLoop *mainloop = NULL;
 
 static struct dunst_status status;
+static bool setup_done = false;
 
 /* see dunst.h */
 void dunst_status(const enum dunst_status_field field,
@@ -56,6 +57,14 @@ static gboolean run(void *data);
 
 void wake_up(void)
 {
+        // If wake_up is being called before the output has been setup we should
+        // return.
+        if (!setup_done)
+        {
+                LOG_D("Ignoring wake up");
+                return;
+        }
+
         LOG_D("Waking up");
         run(NULL);
 }
@@ -197,6 +206,7 @@ int dunst_main(int argc, char *argv[])
                 // we do not call wakeup now, wake_up does not work here yet
         }
 
+        setup_done = true;
         run(NULL);
         g_main_loop_run(mainloop);
         g_clear_pointer(&mainloop, g_main_loop_unref);
diff --git a/src/icon.c b/src/icon.c
index fdca559..2437550 100644
--- a/src/icon.c
+++ b/src/icon.c
@@ -86,6 +86,14 @@ static void pixbuf_data_to_cairo_data(
         }
 }
 
+int get_icon_width(cairo_surface_t *icon, int scale) {
+        return cairo_image_surface_get_width(icon) / scale;
+}
+
+int get_icon_height(cairo_surface_t *icon, int scale) {
+        return cairo_image_surface_get_height(icon) / scale;
+}
+
 cairo_surface_t *gdk_pixbuf_to_cairo_surface(GdkPixbuf *pixbuf)
 {
         assert(pixbuf);
@@ -144,22 +152,26 @@ static bool icon_size_clamp(int *w, int *h) {
  *
  * @param pixbuf (nullable) The pixbuf, which may be too big.
  *                          Takes ownership of the reference.
+ * @param dpi_scale An integer for the dpi scaling. That doesn't mean the icon
+ *                  is always scaled by dpi_scale.
  * @return the scaled version of the pixbuf. If scaling wasn't
  *         necessary, it returns the same pixbuf. Transfers full
  *         ownership of the reference.
  */
-static GdkPixbuf *icon_pixbuf_scale(GdkPixbuf *pixbuf)
+static GdkPixbuf *icon_pixbuf_scale(GdkPixbuf *pixbuf, int dpi_scale)
 {
         ASSERT_OR_RET(pixbuf, NULL);
 
         int w = gdk_pixbuf_get_width(pixbuf);
         int h = gdk_pixbuf_get_height(pixbuf);
 
+
+        // TODO immediately rescale icon upon scale changes
         if (icon_size_clamp(&w, &h)) {
                 GdkPixbuf *scaled = gdk_pixbuf_scale_simple(
                                 pixbuf,
-                                w,
-                                h,
+                                w * dpi_scale,
+                                h * dpi_scale,
                                 GDK_INTERP_BILINEAR);
                 g_object_unref(pixbuf);
                 pixbuf = scaled;
@@ -168,7 +180,7 @@ static GdkPixbuf *icon_pixbuf_scale(GdkPixbuf *pixbuf)
         return pixbuf;
 }
 
-GdkPixbuf *get_pixbuf_from_file(const char *filename)
+GdkPixbuf *get_pixbuf_from_file(const char *filename, int scale)
 {
         char *path = string_to_path(g_strdup(filename));
         GError *error = NULL;
@@ -179,10 +191,11 @@ GdkPixbuf *get_pixbuf_from_file(const char *filename)
                 g_free(path);
                 return NULL;
         }
+        // TODO immediately rescale icon upon scale changes
         icon_size_clamp(&w, &h);
         GdkPixbuf *pixbuf = gdk_pixbuf_new_from_file_at_scale(path,
-                                                              w,
-                                                              h,
+                                                              w * scale,
+                                                              h * scale,
                                                               TRUE,
                                                               &error);
 
@@ -250,7 +263,7 @@ char *get_path_from_icon_name(const char *iconname)
         return new_name;
 }
 
-GdkPixbuf *get_pixbuf_from_icon(const char *iconname)
+GdkPixbuf *get_pixbuf_from_icon(const char *iconname, int scale)
 {
         char *path = get_path_from_icon_name(iconname);
         if (!path) {
@@ -259,7 +272,7 @@ GdkPixbuf *get_pixbuf_from_icon(const char *iconname)
 
         GdkPixbuf *pixbuf = NULL;
 
-        pixbuf = get_pixbuf_from_file(path);
+        pixbuf = get_pixbuf_from_file(path, scale);
         g_free(path);
 
         if (!pixbuf)
@@ -268,18 +281,18 @@ GdkPixbuf *get_pixbuf_from_icon(const char *iconname)
         return pixbuf;
 }
 
-GdkPixbuf *icon_get_for_name(const char *name, char **id)
+GdkPixbuf *icon_get_for_name(const char *name, char **id, int scale)
 {
         ASSERT_OR_RET(name, NULL);
         ASSERT_OR_RET(id, NULL);
 
-        GdkPixbuf *pb = get_pixbuf_from_icon(name);
+        GdkPixbuf *pb = get_pixbuf_from_icon(name, scale);
         if (pb)
                 *id = g_strdup(name);
         return pb;
 }
 
-GdkPixbuf *icon_get_for_data(GVariant *data, char **id)
+GdkPixbuf *icon_get_for_data(GVariant *data, char **id, int dpi_scale)
 {
         ASSERT_OR_RET(data, NULL);
         ASSERT_OR_RET(id, NULL);
@@ -383,7 +396,7 @@ GdkPixbuf *icon_get_for_data(GVariant *data, char **id)
         g_free(data_chk);
         g_variant_unref(data_variant);
 
-        pixbuf = icon_pixbuf_scale(pixbuf);
+        pixbuf = icon_pixbuf_scale(pixbuf, dpi_scale);
 
         return pixbuf;
 }
diff --git a/src/icon.h b/src/icon.h
index 242880b..ef781fb 100644
--- a/src/icon.h
+++ b/src/icon.h
@@ -11,11 +11,26 @@ cairo_surface_t *gdk_pixbuf_to_cairo_surface(GdkPixbuf *pixbuf);
 /** Retrieve an icon by its full filepath, scaled according to settings.
  *
  * @param filename A string representing a readable file path
+ * @param scale An integer representing the output dpi scaling.
  *
  * @return an instance of `GdkPixbuf`
  * @retval NULL: file does not exist, not readable, etc..
  */
-GdkPixbuf *get_pixbuf_from_file(const char *filename);
+GdkPixbuf *get_pixbuf_from_file(const char *filename, int scale);
+
+
+/**
+ * Get the unscaled icon width.
+ *
+ * If scale is 2 for example, the icon will render in twice the size, but
+ * get_icon_width still returns the same size as when scale is 1.
+ */
+int get_icon_width(cairo_surface_t *icon, int scale);
+
+/**
+ * Get the unscaled icon height, see get_icon_width.
+ */
+int get_icon_height(cairo_surface_t *icon, int scale);
 
 /** Retrieve a path from an icon name.
  *
@@ -33,11 +48,12 @@ char *get_path_from_icon_name(const char *iconname);
  * @param iconname A string describing a `file://` URL, an arbitary filename
  *                 or an icon name, which then gets searched for in the
  *                 settings.icon_path
+ * @param scale An integer representing the output dpi scaling.
  *
  * @return an instance of `GdkPixbuf`
  * @retval NULL: file does not exist, not readable, etc..
  */
-GdkPixbuf *get_pixbuf_from_icon(const char *iconname);
+GdkPixbuf *get_pixbuf_from_icon(const char *iconname, int scale);
 
 /** Read an icon from disk and convert it to a GdkPixbuf, scaled according to settings
  *
@@ -49,10 +65,11 @@ GdkPixbuf *get_pixbuf_from_icon(const char *iconname);
  *             get searched in the folders of the icon_path setting.
  * @param id   (necessary) A unique identifier of the returned pixbuf. Only filled,
  *             if the return value is non-NULL.
+ * @param scale An integer representing the output dpi scaling.
  * @return an instance of `GdkPixbuf`, representing the name's image
  * @retval NULL: Invalid path given
  */
-GdkPixbuf *icon_get_for_name(const char *name, char **id);
+GdkPixbuf *icon_get_for_name(const char *name, char **id, int dpi_scale);
 
 /** Convert a GVariant like described in GdkPixbuf, scaled according to settings
  *
@@ -63,10 +80,11 @@ GdkPixbuf *icon_get_for_name(const char *name, char **id);
  *             like described in the notification spec.
  * @param id   (necessary) A unique identifier of the returned pixbuf.
  *             Only filled, if the return value is non-NULL.
+ * @param scale An integer representing the output dpi scaling.
  * @return an instance of `GdkPixbuf` derived from the GVariant
  * @retval NULL: GVariant parameter nulled, invalid or in wrong format
  */
-GdkPixbuf *icon_get_for_data(GVariant *data, char **id);
+GdkPixbuf *icon_get_for_data(GVariant *data, char **id, int scale);
 
 #endif
 /* vim: set ft=c tabstop=8 shiftwidth=8 expandtab textwidth=0: */
diff --git a/src/notification.c b/src/notification.c
index b16d671..015e4b6 100644
--- a/src/notification.c
+++ b/src/notification.c
@@ -23,6 +23,7 @@
 #include "rules.h"
 #include "settings.h"
 #include "utils.h"
+#include "draw.h"
 
 static void notification_extract_urls(struct notification *n);
 static void notification_format_message(struct notification *n);
@@ -314,7 +315,7 @@ void notification_icon_replace_path(struct notification *n, const char *new_icon
         g_clear_object(&n->icon);
         g_clear_pointer(&n->icon_id, g_free);
 
-        n->icon = icon_get_for_name(new_icon, &n->icon_id);
+        n->icon = icon_get_for_name(new_icon, &n->icon_id, draw_get_scale());
 }
 
 void notification_icon_replace_data(struct notification *n, GVariant *new_icon)
@@ -325,7 +326,7 @@ void notification_icon_replace_data(struct notification *n, GVariant *new_icon)
         g_clear_object(&n->icon);
         g_clear_pointer(&n->icon_id, g_free);
 
-        n->icon = icon_get_for_data(new_icon, &n->icon_id);
+        n->icon = icon_get_for_data(new_icon, &n->icon_id, draw_get_scale());
 }
 
 /* see notification.h */
diff --git a/src/wayland/wl.c b/src/wayland/wl.c
index 6b61c7b..a623cf1 100644
--- a/src/wayland/wl.c
+++ b/src/wayland/wl.c
@@ -116,6 +116,8 @@ static void output_handle_scale(void *data, struct wl_output *wl_output,
                 int32_t factor) {
         struct dunst_output *output = data;
         output->scale = factor;
+
+        wake_up();
 }
 
 static const struct wl_output_listener output_listener = {
@@ -622,7 +624,7 @@ static void schedule_frame_and_commit();
 
 // Draw and commit a new frame.
 static void send_frame() {
-        int scale = 1;
+        int scale = wl_get_scale();
 
         struct dunst_output *output = get_configured_output();
         int height = ctx.cur_dim.h;
@@ -689,8 +691,6 @@ static void send_frame() {
         if (ctx.height != height || ctx.width != width) {
                 struct dimensions dim = ctx.cur_dim;
                 // Set window size
-                LOG_D("Window dimensions %ix%i", dim.w, dim.h);
-                LOG_D("Window position %ix%i", dim.x, dim.y);
                 zwlr_layer_surface_v1_set_size(ctx.layer_surface,
                                 dim.w, dim.h);
 
@@ -815,12 +815,15 @@ void wl_win_hide(window win) {
 
 void wl_display_surface(cairo_surface_t *srf, window winptr, const struct dimensions* dim) {
         /* struct window_wl *win = (struct window_wl*)winptr; */
-        ctx.current_buffer = get_next_buffer(ctx.shm, ctx.buffers, dim->w, dim->h);
+        int scale = wl_get_scale();
+        LOG_D("Buffer size (scaled) %ix%i", dim->w * scale, dim->h * scale);
+        ctx.current_buffer = get_next_buffer(ctx.shm, ctx.buffers,
+                        dim->w * scale, dim->h * scale);
 
         cairo_t *c = ctx.current_buffer->cairo;
         cairo_save(c);
         cairo_set_source_surface(c, srf, 0, 0);
-        cairo_rectangle(c, 0, 0, dim->w, dim->h);
+        cairo_rectangle(c, 0, 0, dim->w * scale, dim->h * scale);
         cairo_fill(c);
         cairo_restore(c);
 
@@ -848,6 +851,7 @@ const struct screen_info* wl_get_active_screen(void) {
                 .id = 0,
                 .mmh = 500
         };
+        scr.dpi = wl_get_scale() * 96;
         return &scr;
 }
 
diff --git a/src/wayland/wl.h b/src/wayland/wl.h
index f4b3af9..5b5a914 100644
--- a/src/wayland/wl.h
+++ b/src/wayland/wl.h
@@ -24,6 +24,9 @@ const struct screen_info* wl_get_active_screen(void);
 bool wl_is_idle(void);
 bool wl_have_fullscreen_window(void);
 
+// Return the dpi scaling of the current output. Everything that's rendered
+// should be multiplied by this value, but don't use it to multiply other
+// values. All sizes should be in unscaled units.
 int wl_get_scale(void);
 #endif
 /* vim: set ft=c tabstop=8 shiftwidth=8 expandtab textwidth=0: */
diff --git a/src/x11/x.c b/src/x11/x.c
index 971b57b..ab18c91 100644
--- a/src/x11/x.c
+++ b/src/x11/x.c
@@ -113,7 +113,7 @@ static void x_win_corners_shape(struct window_x11 *win, const int rad)
 
         draw_rounded_rect(cr, 0, 0,
                           width, height,
-                          rad,
+                          rad, 1,
                           true, true);
         cairo_fill(cr);
 
diff --git a/test/icon.c b/test/icon.c
index b9ebc7b..1afe1e0 100644
--- a/test/icon.c
+++ b/test/icon.c
@@ -12,6 +12,8 @@
 
 extern const char *base;
 
+int scale = 1;
+
 TEST test_get_path_from_icon_null(void){
     char *result = get_path_from_icon_name(NULL);
     ASSERT_EQ(result, NULL);
@@ -86,7 +88,7 @@ TEST test_get_pixbuf_from_file_tilde(void)
         gchar *path = g_build_filename(base, iconpath, "valid", "icon1.svg", NULL);
         path = string_replace_at(path, 0, strlen(home), "~");
 
-        GdkPixbuf *pixbuf = get_pixbuf_from_file(path);
+        GdkPixbuf *pixbuf = get_pixbuf_from_file(path, scale);
         g_clear_pointer(&path, g_free);
 
         ASSERT(pixbuf);
@@ -101,7 +103,7 @@ TEST test_get_pixbuf_from_file_absolute(void)
 
         gchar *path = g_build_filename(base, iconpath, "valid", "icon1.svg", NULL);
 
-        GdkPixbuf *pixbuf = get_pixbuf_from_file(path);
+        GdkPixbuf *pixbuf = get_pixbuf_from_file(path, scale);
         g_clear_pointer(&path, g_free);
 
         ASSERT(pixbuf);
@@ -113,7 +115,7 @@ TEST test_get_pixbuf_from_file_absolute(void)
 
 TEST test_get_pixbuf_from_icon_invalid(void)
 {
-        GdkPixbuf *pixbuf = get_pixbuf_from_icon("invalid");
+        GdkPixbuf *pixbuf = get_pixbuf_from_icon("invalid", scale);
         ASSERT(pixbuf == NULL);
         g_clear_pointer(&pixbuf, g_object_unref);
 
@@ -122,7 +124,7 @@ TEST test_get_pixbuf_from_icon_invalid(void)
 
 TEST test_get_pixbuf_from_icon_both(void)
 {
-        GdkPixbuf *pixbuf = get_pixbuf_from_icon("icon1");
+        GdkPixbuf *pixbuf = get_pixbuf_from_icon("icon1", scale);
         // the first icon  found is invalid, so the pixbuf is empty
         ASSERT(!pixbuf);
         g_clear_pointer(&pixbuf, g_object_unref);
@@ -132,7 +134,7 @@ TEST test_get_pixbuf_from_icon_both(void)
 
 TEST test_get_pixbuf_from_icon_onlysvg(void)
 {
-        GdkPixbuf *pixbuf = get_pixbuf_from_icon("onlysvg");
+        GdkPixbuf *pixbuf = get_pixbuf_from_icon("onlysvg", scale);
         ASSERT(pixbuf);
         ASSERTm("SVG pixbuf isn't loaded", IS_ICON_SVG(pixbuf));
         g_clear_pointer(&pixbuf, g_object_unref);
@@ -142,7 +144,7 @@ TEST test_get_pixbuf_from_icon_onlysvg(void)
 
 TEST test_get_pixbuf_from_icon_onlypng(void)
 {
-        GdkPixbuf *pixbuf = get_pixbuf_from_icon("onlypng");
+        GdkPixbuf *pixbuf = get_pixbuf_from_icon("onlypng", scale);
         ASSERT(pixbuf);
         ASSERTm("PNG pixbuf isn't loaded", IS_ICON_PNG(pixbuf));
         g_clear_pointer(&pixbuf, g_object_unref);
@@ -153,7 +155,7 @@ TEST test_get_pixbuf_from_icon_onlypng(void)
 TEST test_get_pixbuf_from_icon_filename(void)
 {
         char *icon = g_strconcat(base, "/data/icons/valid.png", NULL);
-        GdkPixbuf *pixbuf = get_pixbuf_from_icon(icon);
+        GdkPixbuf *pixbuf = get_pixbuf_from_icon(icon, scale);
         ASSERT(pixbuf);
         ASSERTm("PNG pixbuf isn't loaded", IS_ICON_PNG(pixbuf));
         g_clear_pointer(&pixbuf, g_object_unref);
@@ -165,7 +167,7 @@ TEST test_get_pixbuf_from_icon_filename(void)
 TEST test_get_pixbuf_from_icon_fileuri(void)
 {
         char *icon = g_strconcat("file://", base, "/data/icons/valid.svg", NULL);
-        GdkPixbuf *pixbuf = get_pixbuf_from_icon(icon);
+        GdkPixbuf *pixbuf = get_pixbuf_from_icon(icon, scale);
         ASSERT(pixbuf);
         ASSERTm("SVG pixbuf isn't loaded", IS_ICON_SVG(pixbuf));
         g_clear_pointer(&pixbuf, g_object_unref);
@@ -220,7 +222,7 @@ TEST test_icon_size_clamp_too_small_then_too_big(void)
 
 TEST test_get_pixbuf_from_icon_both_is_scaled(void)
 {
-        GdkPixbuf *pixbuf = get_pixbuf_from_icon("onlypng");
+        GdkPixbuf *pixbuf = get_pixbuf_from_icon("onlypng", scale);
         ASSERT(pixbuf);
         ASSERT_EQ(gdk_pixbuf_get_width(pixbuf), 16);
         ASSERT_EQ(gdk_pixbuf_get_height(pixbuf), 16);