Bugs item #2466584, was opened at 2008-12-25 10:26 Message generated for change (Tracker Item Submitted) made by Item Submitter You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=893831&aid=2466584&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: kernel Group: None Status: Open Resolution: None Priority: 5 Private: No Submitted By: AndrewB (andybaumhauer) Assigned to: Nobody/Anonymous (nobody) Summary: Guest/Host serial ports no longer working Initial Comment: Host: Linux, Fedora 10 2.6.27.9-159.fc10.x86_64 on Intel Core 2 Duo (Q6600) running KVM (kvm-74-10.fc10.x86_64) Guest: Windows XP Home, using qemu-kvm -M pc -m 768 -smp 2 -boot c -hda /home/vm/Windows_XP_Home.img -net nic,macaddr=00:16:3e:10:23:ee,vlan=0 -net user,vlan=0,script=,ifname=virbr0 -std-vga -soundhw es1370 -localtime -serial /dev/ttyS0 Error messages when quitting Guest OS: kvm_run: Unknown error 524 kvm_run returned -524 Summary: On Fedora 8 and Fedora 9 using KVM-65 and earlier, connections from Windows COM1 to /dev/ttyS0 worked. On Fedora 10 and KVM-74 serial connection between guest and host no longer works. How to reproduce: On host OS, use GTKTerm to access the serial port /dev/ttyS0 with a loopback adapter attached to the port. You will see characters echo'ed back. On Guest OS, use option -serial stdio and Hyperterm to access COM1, and you will see characters from Hyperterm on the Host OS terminal that started qemu-kvm (so we know that the Guest OS can send data out of KVM). On Fedora 10, if you regress to KVM-65 (from Fedora 9 repository), by: rpm -e kvm-74-10.fc10.x86_64 rpm -ihv --force gnutls-2.0.4-2.fc9.x86_64.rpm rpm -ihv kvm-65-1.fc9.x86_64.rpm Now option -serial /dev/ttyS0 will operate as expected, and Hyperterm will see characters echo'ed from the loopback hardware. ---------------------------------------------------------------------- You can respond by visiting: https://sourceforge.net/tracker/?func=detail&atid=893831&aid=2466584&group_id=180599 -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
