id summary reporter owner description type status component version resolution keywords cc guest host 11768 Missing characters using serial port (reopen). Neofit "Good day, ladies and genlemens. I collide with issue decribed at https://www.virtualbox.org/ticket/1548. [[BR]] I use VirtualBox 4.2.6 build 82870 under Xubuntu 12.04 LTS AMD64 for emulate Windows XP prof SP3. Some time ago I see that data received in XP (115200, 8 bit of data, no parity, no flow control, 2 stop bits) from my hardware temporary out of trend. Now I check this ussie.[[BR]] For tight coverage today I use GtkTerm for send 8k pseudo-random data from Xubuntu (ttyS1) to XP (ttyS0 mirrored to COM1). Normally I use under XP ""Br@y terminal"" and today I try to use standart Hyperterminal aslo. I use same setting as I use with my hardware. In attaced files you can see outgoing data (noise8k.bin) and differences between reseived and transmitted data (bray.txt, hterm.txt).[[BR]] As I see - Br@y lost approx. 1k series byte after receive first 1k bytes. Hyperterminal - lost by one byte randomly and swap bytes." defect closed uart VirtualBox 4.2.6 obsolete virtual UART lost and swap bytes Windows Linux