Cannot start VM with more than 5 network adapters of type Am79C973 => Fixed in SVN

[andynor]

On Windows7-64 and Ubuntu-64, upgrading from VirtualBox 4.2.18 to 4.3.4 caused a virtual machine to produce an error message at boot:

"failed to open a session for the virtual machine <name>. Failed to allocate 524288 bytes of memory for the PCNet device (VERR_PGM_TOO_MANY_MMIO2_RANGES)"

Result Code: E_FAIL (0x80004005) Component: Console Interface: IConsole {8ab7c520-2442-4b66-8d74-4ff1e195d2b6}

The problem is related to having more than 5 (6,7 or 8) network interfaces enabled and is only observed when creating a virtual machine with the "Linux other" 32-bit template. The "Linux other (64-bit)" has no issues. The difference in config files is PEA, LongMode and IOAPIC enabled in 64 vs 32 bit and the default network adapter type. (32bit: Am79C973 and 64bit: 82540EM. Setting adapter type to 82540EM after using the 32-bit template fixes the problem.

• VBoxManage.exe modifyvm <name> --nic<num> intnet | 1 to 8

• VBoxManage.exe modifyvm <name> --intnet<num> <string> | 1 to 8 with different strings

• VBoxManage.exe modifyvm <name> --nictype<num> 82540EM | 1 to 8

Diff: ​http://diffchecker.com/ljbxd5lr

[Frank Mehnert]

Please attach a VBox.log file for the VM session where you saw the error message.

[Frank Mehnert]

Actually not necessary, we are able to reproduce the problem.

[Frank Mehnert]

Thank you for the report. This problem will be fixed in the next 4.3.x maintenance release.

[Frank Mehnert]

The fix is part of VBox 4.3.6.