Bugs item #2813926, was opened at 2009-06-29 13:57 Message generated for change (Tracker Item Submitted) made by saezien You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=893831&aid=2813926&group_id=180599 Please note that this message will contain a full copy of the comment thread, including the initial issue submission, for this request, not just the latest update. Category: qemu Group: None Status: Open Resolution: None Priority: 5 Private: No Submitted By: Ludovic Magerand (saezien) Assigned to: Nobody/Anonymous (nobody) Summary: USB connection lost on device restart Initial Comment: I was trying to upgrade my Nokia 5800 phone using Nokia Software Updater on a Windows XP (32bits) virtual machine running inside a AMD host (using Gentoo with a vanilla kernel : Linux lantia 2.6.30 #1 SMP PREEMPT Tue Jun 16 16:46:42 CEST 2009 x86_64 AMD Turion(tm) X2 Ultra Dual-Core Mobile ZM-82 AuthenticAMD GNU/Linux) using KVM userland tools 85. It runs fine until the end of the download of the first package when the phone need to reboot in order to continue with the second package. At this moment as the device is reseted, the usb device number change in the kernel and the virtual machine lost the connection to it, which make the update failed because I think the virtual machine is no longer aware that the device is here (the software in the VM is waiting as if we had removed the device). Here is the output of the lsusb command before and after the device reboot : Bus 001 Device 007: ID 0421:0154 Nokia Mobile Phones Bus 001 Device 008: ID 0421:0154 Nokia Mobile Phones As we can seen on http://www.inspirated.com/wordpress/2009/03/15/howto-use-usb-devices-in-virtual-machine-manager-with-qemu , I'm not the first one to have this specific problem. Searching over google, I found many problem related to this issue (for example some devices loosing connection after going into powersaving mode). I'm thinking that a possible solution is that once a USB device is added by its ID in qemu using usb_add, then if the device disapear temporarly and reappear with another device number, then it should be automaticly readded and shared to the virtual machine. I don't know if it's an easy things to do as I never looked inside the linux-kvm code, but I hope it's possible at least. ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=893831&aid=2813926&group_id=180599 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
