qemu hangs in windows 7 host with -serial pipe:windbg

[alex]

Execution line:
qemu-system-i386.exe -m 512 c:\Disks\Qemu_XP_en.vhd -serial pipe:windbg

It waits for the pipe.
Execute windbg
c:\WINDDK\7600.16385.1\Debuggers\windbg.exe -k com:pipe,port=\\.\pipe\windbg,resets=0,reconnect

GUI black screen shown. QEMU hangs.

qemu v1.5.3 (c0b1a7e207094dba0b37a892b41fe4cab3195e44). MinGW built.

[Thomas Huth (th-huth)]

Triaging old bug tickets... can you still reproduce this issue with the latest version of QEMU? Or could we close this ticket nowadays?

[Launchpad Janitor (janitor)]

[Expired for QEMU because there has been no activity for 60 days.]

[Jacob (jacob11)]

Tested and this issue still affects the latest version of QEMU (8.2.0) compiled for Windows.

Instructions in original post are still sufficient to reproduce the problem on Windows 7 x64.
Both i386 and x86_64 were tested and both result in a hung QEMU process.

The GUI does not open until after the other end of the pipe connects (to WinDbg or other).

Using -display gtk results in a hung GUI window with a white screen.
Using -display sdl results in a responsive GUI window, but the VM is still hung after the text "SeaBIOS (version rel-...)" is printed to the screen.

Running with "-d trace:serial_read,trace:serial_write,trace:serial_update_parameters" results in the following output to the console:
serial_update_parameters baudrate=9600 parity='N' data=5 stop=1
serial_update_parameters baudrate=9600 parity='N' data=5 stop=1

I can post additional logs if provided with appropriate parameters for QEMU.

[Peter Maydell (pmaydell)]

This bug tracker for QEMU has been obsolete for years. If you think there's a problem with QEMU, please file a full report in the gitlab bugtracker: https://gitlab.com/qemu-project/qemu/-/issues . Thanks.

[Jacob (jacob11)]

Thank you for the info.

Current issues tracking this bug:
https://gitlab.com/qemu-project/qemu/-/issues/675
https://gitlab.com/qemu-project/qemu/-/issues/1468
https://gitlab.com/qemu-project/qemu/-/issues/1802