windows guests under ubuntu 10.10 ALWAYS crash, silently and with no error message ... just a matter of time. GUI problem?

[Ian]

Every time -- EVERY TIME -- I run a windows guest under my linux host, it will suddenly and silently stop running.

I have a few virtual desktops on my machine, and the VirtualBox guest (running windows) sits maximized on its own desktop. I never see the crash when it happens, i'll just switch to a different virtual desktop for a while, and when I switch back the VirtualBox guest's desktop the window has vanished.

I see this crash running both windows vista and windows 7 as a guest, while ubuntu guests are not affected. It might be a GUI problem, because the ubuntu guests are running in textmode and never launch X.

I'm running Ubuntu 10.10 with VirtualBox 4.0.2 r69518.

When I run "VirtualBox -startvm 7" or "VirtualBox -startvm vista" on the command line, the crash does not produce any helpful error messages. In fact, they terminate normally and return "0" to the shell.

There are some output messages while the VM runs, but they don't seem to be related to the crash. They are all this message:

Qt WARNING: X Error: BadAccess? (attempt to access private resource denied) 10

Major opcode: 33 (X_GrabKey) Resource id: 0x5600105

[Ian]

VBox.log

[Frank Mehnert]

Please could you try if VBox 4.0.4 fixes your problem? Otherwise please provide a ​core dump. In that case contact me via private e-mail at frank _dot_ mehnert _at_ oracle _dot_ com (I can provide you a server for uploading the core dump).

[Ian]

I will try 4.0.4.

As for VirtualBox 4.0.2, no core was dumped when the windows 7 VM exited. Here is my console log from running it:

$ ulimit -c unlimited $ sudo su # echo -n 1 > /proc/sys/kernel/core_uses_pid # echo -n 1 > /proc/sys/fs/suid_dumpable # exit $ VirtualBox -startvm 7 Qt WARNING: X Error: BadAccess (attempt to access private resource denied) 10

Major opcode: 33 (X_GrabKey) Resource id: 0x4a00105

Qt WARNING: X Error: BadAccess (attempt to access private resource denied) 10

Major opcode: 33 (X_GrabKey) Resource id: 0x4a00105

Qt WARNING: X Error: BadAccess (attempt to access private resource denied) 10

Major opcode: 33 (X_GrabKey) Resource id: 0x4a00105

Qt WARNING: X Error: BadAccess (attempt to access private resource denied) 10

Major opcode: 33 (X_GrabKey) Resource id: 0x4a00105

Qt WARNING: X Error: BadAccess (attempt to access private resource denied) 10

Major opcode: 33 (X_GrabKey) Resource id: 0x4a00105

Qt WARNING: X Error: BadAccess (attempt to access private resource denied) 10

Major opcode: 33 (X_GrabKey) Resource id: 0x4a00105

Qt WARNING: X Error: BadAccess (attempt to access private resource denied) 10

Major opcode: 33 (X_GrabKey) Resource id: 0x4a00105

$ ls core.* ls: cannot access core.*: No such file or directory $

Did I do something wrong?

Also, I forgot to write in the initial report that I'm running 64-bit Ubuntu 10.10 for the host and 64-bit Windows 7 as the guest, with guest additions installed.

[Ian]

re-pasting, hopefully this will be better formatting.

$ ulimit -c unlimited 
$ sudo su 
# echo -n 1 > /proc/sys/kernel/core_uses_pid 
# echo -n 1 > /proc/sys/fs/suid_dumpable 
# exit 
$ VirtualBox -startvm 7 
Qt WARNING: X Error: BadAccess (attempt to access private resource denied) 10
  Major opcode: 33 (X_GrabKey)
  Resource id:  0x4a00105
Qt WARNING: X Error: BadAccess (attempt to access private resource denied) 10
  Major opcode: 33 (X_GrabKey)
  Resource id:  0x4a00105
Qt WARNING: X Error: BadAccess (attempt to access private resource denied) 10
  Major opcode: 33 (X_GrabKey)
  Resource id:  0x4a00105
Qt WARNING: X Error: BadAccess (attempt to access private resource denied) 10
  Major opcode: 33 (X_GrabKey)
  Resource id:  0x4a00105
Qt WARNING: X Error: BadAccess (attempt to access private resource denied) 10
  Major opcode: 33 (X_GrabKey)
  Resource id:  0x4a00105
Qt WARNING: X Error: BadAccess (attempt to access private resource denied) 10
  Major opcode: 33 (X_GrabKey)
  Resource id:  0x4a00105
Qt WARNING: X Error: BadAccess (attempt to access private resource denied) 10
  Major opcode: 33 (X_GrabKey)
  Resource id:  0x4a00105
$ ls core.* 
ls: cannot access core.*: No such file or directory 
$

[Ian]

4.0.4 fixes the problem.

[Frank Mehnert]

Thanks for the feedback.