diff --git a/linux.md b/linux.md
index 6b6510fe..d2ca8f53 100644
--- a/linux.md
+++ b/linux.md
@@ -24,7 +24,6 @@ been modified, mostly for
 
 * header files issues
 * const char *
-* STL constructor issues (see Disk_t and HDD)
 * exclude some Windows heavy blocks (source/MouseInterface.cpp)
 
 ##  What works
@@ -41,7 +40,6 @@ Some features totally ignored:
 * NSTC colors
 * ethernet
 * serial port
-* sound
 * debugger
 * speech
 
@@ -77,7 +75,9 @@ This is based on Qt, currently tested with 5.10
 * joystick: it uses QtGamepad (correct names will only be displayed with 5.11)
 * emulator runs in the main UI thread
 * Qt timers are very coarse: the emulator needs to dynamically adapt the cycles to execute
+* the app runs at 60FPS with correction for uneven timer deltas.
 * full speed when disk spins execute up to 5 ms real wall clock of emulator code (then returns to Qt)
+* audio is supported and there are a few configuration options to tune the latency (default very conservative 200ms)
 
 ## Build