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Description of problem: Console text scrolls very slowly, increases boot times. Version-Release number of selected component (if applicable): virt-manager-0.10.0-4.git79196cdf.fc20.noarch libvirt-1.1.3-2.fc20.x86_64 qemu-1.6.0-10.fc20.x86_64 How reproducible: Always Steps to Reproduce: 1. Boot with rhgb quiet removed. OR 2. hexdump -C /dev/vda1 Actual results: Super slow. Lots of flickering. See screencast attachment. Expected results: In particular 2 should be very fast, I ought to get over 1-2MB of binary before I can hit command-C. Additional info: [root@f20s Videos]# ps -ef | grep qemu qemu 13620 1 18 18:58 ? 00:02:19 /usr/bin/qemu-system-x86_64 -machine accel=kvm -name fedora20 -S -machine pc-i440fx-1.6,accel=kvm,usb=off -m 1536 -realtime mlock=off -smp 2,sockets=2,cores=1,threads=1 -uuid 8e370002-536b-47a1-90fd-732c90a0a599 -no-user-config -nodefaults -chardev socket,id=charmonitor,path=/var/lib/libvirt/qemu/fedora20.monitor,server,nowait -mon chardev=charmonitor,id=monitor,mode=control -rtc base=utc,driftfix=slew -no-kvm-pit-reinjection -no-hpet -no-shutdown -boot order=dc,menu=on -device ich9-usb-ehci1,id=usb,bus=pci.0,addr=0x5.0x7 -device ich9-usb-uhci1,masterbus=usb.0,firstport=0,bus=pci.0,multifunction=on,addr=0x5 -device ich9-usb-uhci2,masterbus=usb.0,firstport=2,bus=pci.0,addr=0x5.0x1 -device ich9-usb-uhci3,masterbus=usb.0,firstport=4,bus=pci.0,addr=0x5.0x2 -device ahci,id=ahci0,bus=pci.0,addr=0x8 -device virtio-serial-pci,id=virtio-serial0,bus=pci.0,addr=0x6 -drive file=/var/lib/libvirt/images/Fedora-Live-Desktop-x86_64-20-Beta-TC2.iso,if=none,id=drive-ide0-0-0,readonly=on,format=raw -device ide-cd,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 -drive file=/dev/guestvms/f20betatc2btrfs,if=none,id=drive-virtio-disk0,format=raw,cache=none,aio=native -device virtio-blk-pci,scsi=off,bus=pci.0,addr=0x9,drive=drive-virtio-disk0,id=virtio-disk0 -netdev tap,fd=24,id=hostnet0,vhost=on,vhostfd=25 -device virtio-net-pci,netdev=hostnet0,id=net0,mac=52:54:00:04:42:1e,bus=pci.0,addr=0x3 -chardev pty,id=charserial0 -device isa-serial,chardev=charserial0,id=serial0 -vnc 0.0.0.0:0 -device qxl-vga,id=video0,ram_size=67108864,vram_size=67108864,bus=pci.0,addr=0x2 -device intel-hda,id=sound0,bus=pci.0,addr=0x4 -device hda-duplex,id=sound0-codec0,bus=sound0.0,cad=0 -device virtio-balloon-pci,id=balloon0,bus=pci.0,addr=0x7
Created attachment 812280 [details] screencast showing problem
Please provide the guest config: sudo virsh dumpxml $vmname Is this using the 'graphical' display, or over a text console ? (View->Text Console will show you which)
Created attachment 824951 [details] virsh dumpxml fedora20 This is via VNC using TigerVNC as the client.
Correction: also happens with virt-manager (in GNOME), with View > Text Console > Graphical Console VNC set.
qxl has had problems combined with qxl in the past. does switching to spice help? I realize it's not a full solution but it should help limit the problem at least. Also try switch from qxl to cirrus but keeping VNC on
This may be a dup of bug 1020393.
Can you try it with the https://admin.fedoraproject.org/updates/xorg-x11-drv-qxl-0.1.1-3.fc20 update? Though I think that's mainly a spice-specific thing we're dealing with over there.
Marking as dup according to comment #6 *** This bug has been marked as a duplicate of bug 1020393 ***