We should now see the volume control progress bar or slider adjust within guest when you press volume up/down buttons.
diff --git a/hid-linux.c b/hid-linux.c
-index f2e0bce..e59312c 100644
+index f2e0bce..a4b0cd6 100644
--- a/hid-linux.c
+++ b/hid-linux.c
@@ -42,12 +42,11 @@
#define DEBUG_HID_LINUX
-@@ -64,468 +63,637 @@ while (0);
+@@ -64,468 +63,649 @@ while (0);
# define DEBUG(_format_, args...) (void)0
#endif
+ case KEY_SYSRQ:
+ keycode = 0x37;
+ first = 0xe0;
++ break;
++ case KEY_MUTE:
++ keycode = 0x20;
++ first = 0xe0;
++ break;
++ case KEY_VOLUMEDOWN:
++ keycode = 0x2e;
++ first = 0xe0;
++ break;
++ case KEY_VOLUMEUP:
++ keycode = 0x30;
++ first = 0xe0;
+ break;
}