VirtualBox

Ticket #11768 (new defect)

Opened 12 months ago

Last modified 10 months ago

Missing characters using serial port (reopen).

Reported by: Neofit Owned by:
Priority: major Component: uart
Version: VirtualBox 4.2.6 Keywords: virtual UART lost and swap bytes
Cc: Guest type: Windows
Host type: Linux

Description

Good day, ladies and genlemens.

I collide with issue decribed at https://www.virtualbox.org/ticket/1548.
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.
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).
As I see - Br@y lost approx. 1k series byte after receive first 1k bytes. Hyperterminal - lost by one byte randomly and swap bytes.

Attachments

Noise8k.bin Download (8.0 KB) - added by Neofit 12 months ago.
Outgoing binary data
bray.txt Download (17.5 KB) - added by Neofit 12 months ago.
Differences when receive by Br@y terminal
hterm.txt Download (132.6 KB) - added by Neofit 12 months ago.
Differences when receive by Hyperterminal
VBoxSVC.log Download (1.6 KB) - added by Neofit 12 months ago.
Session log file

Change History

Changed 12 months ago by Neofit

Outgoing binary data

Changed 12 months ago by Neofit

Differences when receive by Br@y terminal

Changed 12 months ago by Neofit

Differences when receive by Hyperterminal

Changed 12 months ago by Neofit

Session log file

comment:1 Changed 10 months ago by nothx

Same problems with 4.2.14 and also with the older build 4.1.26. XP SP3 host on debian jessie, 64 bit.

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