Red Hat Bugzilla – Full Text Bug Listing
|Summary:||Setting multifunction=on breaks SPICE/QXL multihead support in Windows|
|Product:||[Fedora] Fedora||Reporter:||Laine Stump <laine>|
|Component:||libvirt||Assignee:||Laine Stump <laine>|
|Status:||CLOSED ERRATA||QA Contact:||Fedora Extras Quality Assurance <extras-qa>|
|Version:||16||CC:||berrange, clalancette, crobinso, dougsland, itamar, jforbes, laine, veillard, virt-maint|
|Fixed In Version:||libvirt-0.9.6-2.fc16||Doc Type:||Bug Fix|
|Doc Text:||Story Points:||---|
|Last Closed:||2011-10-09 15:50:53 EDT||Type:||---|
|oVirt Team:||---||RHEL 7.3 requirements from Atomic Host:|
Description Laine Stump 2011-10-02 23:44:32 EDT
Description of problem: Since libvirt started adding multifunction=on to PCI devices, SPICE/QXL multihead support in Windows no longer works. Version-Release number of selected component (if applicable): libvirt-0.9.3-1.el6 Steps to Reproduce: 1. Create a Windows XP guest with SPICE graphics + QXL display adapter 2. Install QXL graphics device driver in Windows 3. Stop the guest 4. Add a second <video> element to the guest for QXL display adapter 5. Start the guest again 6. Configure the QXL device driver for the second display Actual results: Windows fails to start the QXL device driver with an error 'Code 10' Expected results: The second device is initialized. --- In response to a suggestion by Dan Berrange on libvir-list: https://www.redhat.com/archives/libvir-list/2011-September/msg01036.html I pushed the following patch to upstream libvirt, which removes the automatic setting of the multifunction bit, in favor of an XML attribute to turn it on as desired: commit c329db7180d77c8077b9f9cd167a71d7f347227a Author: Laine Stump <firstname.lastname@example.org> Date: Thu Sep 29 13:00:32 2011 -0400 qemu: make PCI multifunction support more manual This allows exact control of when the multifunction bit should be turned on/off for each slot/function on the guest's PCI bus, eliminating the issue with the QXL driver's (and possibly/probably other drivers') lack of multifunction support.
Comment 1 Fedora Update System 2011-10-03 12:06:55 EDT
libvirt-0.9.6-2.fc16 has been submitted as an update for Fedora 16. https://admin.fedoraproject.org/updates/libvirt-0.9.6-2.fc16
Comment 2 Fedora Update System 2011-10-03 13:45:17 EDT
Package libvirt-0.9.6-2.fc16: * should fix your issue, * was pushed to the Fedora 16 testing repository, * should be available at your local mirror within two days. Update it with: # su -c 'yum update --enablerepo=updates-testing libvirt-0.9.6-2.fc16' as soon as you are able to. Please go to the following url: https://admin.fedoraproject.org/updates/libvirt-0.9.6-2.fc16 then log in and leave karma (feedback).
Comment 3 Fedora Update System 2011-10-09 15:50:53 EDT
libvirt-0.9.6-2.fc16 has been pushed to the Fedora 16 stable repository. If problems still persist, please make note of it in this bug report.