Hi, I have also issues with USB devices on Windows 7 32Bit guest. The devices I use are mainly USB Serial COM ports. On top of that a proprietary binary protocol is used. The applications that communicate with the USB Serial COM ports are constantly having problems reading and writing data. Installed: virtualbox 4.3.14-3 virtualbox-guest-iso 4.3.14-1 virtualbox-guest-modules 4.3.14-5 virtualbox-host-modules 4.3.14-5 Linux localhost 3.16.1-1-ARCH #1 SMP PREEMPT Thu Aug 14 07:40:19 CEST 2014 x86_64 GNU/Linux Extension Pack 4.3.14r95030 With usbmon and wireshark I could see a lot of malformed USB packets. I'm afraid I don't know enough to make an exact conclusion whats wrong in detail. I will try a downgrad from 4.3.14-3 to 4.3.12 and report again. Am 04.08.2014 um 22:05 schrieb Ralf Mardorf: > On Mon, 2014-08-04 at 20:15 +0100, Marco Monteiro wrote: >> I have experienced problems with USB also. My guest is Windows 8.1. >> When I try to access the USB device from Windows, the access fails >> and then everything inside the VM seems to start misbehaving. I cannot >> properly shutdown the VM - I have to kill the VBox process. > > Hi Marco, > > when the USB data transfer paused, the graphic performance and access to > the VDI drive slowed down, for iTunes and other apps running on the XP > guest. Performance for iTunes always is bad, but other apps usually run > without issues. I always could shut down Windows, but sometimes much > time was needed before I could use the menu. If you can't shutdown your > guest, you could try to shut down the virtual machine by closing the > VBox window, instead off killing the process. > > I add an additional comment to my bug report. > > "There isn't an issue for the USB mouse, but data transfer between VBox > and an iPad2 is broken when I use 4.3.14. There aren't issues anymore, > after I downgraded all packages to 4.3.12. The whole performance of Vbox > is slower when syncing iTunes and an iPad with .14 and there are many > unknown errors and timeouts, if you e.g. try to install 20 applications > or more from iTunes running on the VBox guest to an iPad. Disconnecting > the iPad's USB causes VBox to crash, if it is done without unchecking > the iPad in VBox's devices menu, this doesn't happen when using .12. > > The used packages are virtualbox, virtualbox-host-dkms, > virtualbox-extension-pack and I install the guest additions that fit to > the installed version of virtualbox. Perhaps the culprit isn't the > package virtualbox, it might be the package virtualbox-extension-pack, > since it's needed for USB2 support." - > https://bugs.archlinux.org/task/41424 > > JFTR everything already was ok, when I only downgraded the package > virtualbox, disabled USB2 support and kept the 4.3.14 guest additions. > In the mean time I downgraded all packages and add the 4.3.12 guest > additions, so with the outdated version I now can use USB2 again. > > Perhaps you have the time confirm my bug report. > > Regards, > Ralf >
