VirtualBox

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Ticket Resolution Summary Owner Reporter
#16518 worksforme 5.1.14 verry slow on 4770k (5.1.12 and older are faster) LMS23
Description

Since the update to 5.1.14, my virtual machines are slower than before.

It affects both Windows (Win7 and Win10) and Linux (Ubuntu/Lubuntu 16.10) guests.

It is mainly about the user interface, this is noticeably slower. I tried it with and without 3D acceleration.

After a downgrade of the VirtualBox (5.1.12 or older) the systems are faster again.

My Setup:

  • Intel i7 4770k @ 4 Ghz
  • 32 GB RAM (4x8)
  • GA-Z87X-OC
  • All VM Disks on SSD
  • Windows 10 PRO 1607
#16514 invalid NAT port forwarding doesn't work for loopback address on host xnoreq
Description

Setup: Windows 10 host and Linux guest with a single NAT adapter.

Port forwarding: TCP from host address 127.0.0.1 and port 9092 to guest port 9092

On the guest: nc -l -p 9092 (simply listen on the port with netcat)

Test on the host: nc 127.0.0.1 9092

No connection is established, nc immediately exits. telnet 127.0.0.1 9092 immediately exits with: "Connection closed by foreign host."

I have checked, and VirtualBox.exe does listen on 127.0.0.1:9092 TCP, but new connections show up as waiting connections in state Time wait in netstat on the host.

The only way I've got this port forwarding to work is to remove the 127.0.0.1 host address from the port forwarding, and then connect to the host's external IP in the test.

Why doesn't it work for 127.0.0.1 on the host?

#16513 fixed VERR_VM_DRIVER_NOT_INSTALLED (Fedora 25 SELinux problem) Michael J. Fuhrman
Description

Fedora 25 recently updated, the new version is .. kernel-4.9.11-200.fc25.x86_64.

While attempting to run '/sbin/vboxconfig', it fails:

vboxdrv.sh: Building VirtualBox kernel modules. vboxdrv.sh: Starting VirtualBox services. vboxdrv.sh: Building VirtualBox kernel modules. vboxdrv.sh: failed: modprobe vboxdrv failed. Please use 'dmesg' to find out why.

There were problems setting up VirtualBox. To re-start ...

Attached will be 4 logs .. the upgrade logs for Linux, and 2 logs for VirtualBox rebuild and the /var/log/vbox-install.log

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