VirtualBox

Opened 15 years ago

Closed 14 years ago

Last modified 14 years ago

#4496 closed defect (fixed)

Annoyng "A network cable is unplugged" message => Fixed in SVN

Reported by: Alexey Kuznetsov Owned by:
Component: other Version: VirtualBox 3.0.2
Keywords: Cc:
Guest type: Windows Host type: Linux

Description

Windows XP every 5 seconds show "A network cable is unplugged" message.

Setup two virtual network adapter, first adapter map to NAT, second bridge to connected wire network. After it remove "cable connected" in options menu. Connect real cable to bridged interface. And run Windows XP.

Attachments (4)

Screenshot.png (34.1 KB ) - added by Alexey Kuznetsov 15 years ago.
(XP) Visual Studio Full 2008-2009-07-12-22-31-33.log (61.8 KB ) - added by Alexey Kuznetsov 15 years ago.
Screenshot-Additional Options.png (12.1 KB ) - added by Alexey Kuznetsov 15 years ago.
Screenshot-Sun VirtualBox.png (8.1 KB ) - added by Alexey Kuznetsov 15 years ago.

Download all attachments as: .zip

Change History (19)

by Alexey Kuznetsov, 15 years ago

Attachment: Screenshot.png added

by Alexey Kuznetsov, 15 years ago

by Alexey Kuznetsov, 15 years ago

comment:1 by Frank Mehnert, 15 years ago

What do you mean by remove "cable connected" in options menu? If you click on that menu, then the virtual network cable is disconnected and Windows will detect that, regardless of the state of your physical network cable. Or did I misunderstand you?

comment:2 by Alexey Kuznetsov, 15 years ago

I was think this. But now i found windows make it independ on physical cable status. Windows always trying to establish connection it happens (as i suspect) because vbnet send signal "Cable connected". Then windows show looking for IP icon on task bar, then show "No network cable". And it happens again and again.

comment:3 by Frank Mehnert, 15 years ago

Still don't fully understand your scenario. Is the virtual network cable (in the VM network settings) connected or disconnected?

If it is disabled then the guest will detect that and probably complain.

comment:4 by Alexey Kuznetsov, 15 years ago

in vb network device enabled and cable disconnected.

comment:5 by Alexey Kuznetsov, 15 years ago

guest should make it once

comment:6 by Carlos Troncoso, 14 years ago

Got the same issue with 3.0.6 r52128 Host : Linux Ubuntu 9.04 Guest : WinXp Net Adapter 1 : Bridge -> wlan0 Disconnected (unchecked in adapter list) Net Adapter 2 : NAT Connected Net Adapter 3 : Host-only Disconnected Net Adapter 4 : Bridge -> eth0 Disconnected


Every few seconds, all the supposed disconnected adapters (icons) flash, like in a normal DHCP negociation, and then the anoying message "Cable unplugged". So, I have to disable them from the guest OS to be able to work without bubble messages poping up every few secs.

comment:7 by Frank Mehnert, 14 years ago

ctroncoso, please attach a VBox.log of such a VM session when you experience these messages in the guest.

comment:8 by Frank Mehnert, 14 years ago

axet, still unable to reproduce. I have a setup which is mostly the same as yours (3 x pcnet, 1st: NAT, 2nd: wlan0, 3rd: eth0, WinXP guest). Currently wlan0 is not connected (I'm connected through eth0) and there is an exclamation mark on the Windows guest but no annoying message boxes. Do you have some system tool installed which is fiddling with the network connections?

comment:9 by Alexey Kuznetsov, 14 years ago

annoying message is windows tool tip message appears each few seconds. which told about "A network cable is unplugged". see (Screenshot.png).

i have no special application installed, this issue appear on clean windows installation.

please check all contitions:

  • three interfaces
  • one nat, default connected
  • two other enabled but no virtual/physical cable connected. (Screenshot-Additional Options.png)

comment:10 by Alexey Kuznetsov, 14 years ago

oh, my bad. it is nessesery to have physical connection and no virtual connection.

same for wlan0, if it connected to real wifi, and have no virtual cable connected (bridged connection) i got same issue. (bumping tool tip message)

comment:11 by Frank Mehnert, 14 years ago

Uh, finally I'm able to reproduce this behavior! Investigating ...

comment:12 by Frank Mehnert, 14 years ago

Does not happen with the E1000 device emulation.

comment:13 by Alexey Kuznetsov, 14 years ago

oh, nice. look like VM passtrough some events which it should to fliter.

comment:14 by Frank Mehnert, 14 years ago

Summary: Annoyng "A network cable is unplugged" messageAnnoyng "A network cable is unplugged" message => Fixed in SVN

Fixed in r24455. The fix will be contained in the next release. Actually the guest was confused because some packets arrived its RX buffers even if the link down.

comment:15 by Frank Mehnert, 14 years ago

Resolution: fixed
Status: newclosed

Fixed in 3.0.12.

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