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+++ This bug was initially created as a clone of Bug #948717 +++
qemu-1.4.0-11.fc18.x86_64 from https://fedoraproject.org/wiki/Virtualization_Preview_Repository
kernel-3.8.3-203.fc18.x86_64
qemu command line:
ionice -c 3 qemu-kvm -enable-kvm -m 2048M -smp 1 -drive file=./Fedora-19-Alpha-TC4-x86_64-netinst-test.iso.qcow2,index=0,media=disk,cache=unsafe -localtime -serial file:/tmp/qemu-Fedora-19-Alpha-TC4-x86_64-netinst-test.iso.qcow2-output.log -name Fedora-19-Alpha-TC4-x86_64-netinst-test.iso.qcow2 -cdrom /local/mfabian/iso/Fedora-19-Alpha-TC4/Fedora-19-Alpha-TC4-x86_64-netinst.iso -boot c -vga qxl -display vnc=:5 -net nic -net user,hostname=Fedora-19-Alpha-TC4-x86_64-netinst-test.iso.qcow2,hostfwd=tcp::5562-:22 -monitor stdio -usb
The above commandline has “-display vnc=:5”, the problem occurs
with “-display sdl” as well though.
The result is pixel garbage, see attached screen shot.
When using “-vga std” or “-vga cirrus” instead of “-vga qxl” it works
fine, no pixel garbage.
--- Additional comment from Cole Robinson on 2013-04-14 21:55:06 CEST ---
I can reproduce with upstream. Grab F19 boot.iso here:
https://dl.fedoraproject.org/pub/alt/stage/19-Alpha-TC6/Fedora/x86_64/os/images/boot.iso
And run:
./x86_64-softmmu/qemu-system-x86_64 -enable-kvm -vga qxl -display sdl -cdrom ~/boot.iso -m 2048
Doing -device qxl works fine though. I also tried an F16 live cd I had hanging around and that worked fine, so maybe it's an F19 driver issue.
Alon, Gerd, thoughts?
--- Additional comment from Cole Robinson on 2013-05-28 01:01:01 CEST ---
Ping, any spice folks want to weigh in on this? Granted qxl->vnc shouldn't be a common setup, but people tend to try it out if hitting graphical issues and wanting to eliminate spice from the equation (for better or worse).
--- Additional comment from Steve Tyler on 2013-07-31 15:33:52 CEST ---
Confirming severe display corruption with the "-vga qxl" option.
With the "-vga std" option, there is no corruption.
By blindly clicking in the upper right corner, pressing the down-arrow four times, and pressing Enter twice, it is possible to power off the VM, if the corrupt display shows parts of the Welcome dialog.
Steps to reproduce:
$ qemu-kvm -m 4096 -cdrom ~/xfr/fedora/F19/Fedora-Live-Desktop-x86_64-19-1.iso -vga qxl
Version:
qemu-1.4.2-4.fc19.x86_64
kernel 3.10.3-300.fc19.x86_64
--- Additional comment from Jan Kratochvil on 2013-08-19 20:36:29 CEST ---
qemu-system-x86-1.4.2-5.fc19.x86_64
tigervnc-1.3.0-3.fc19.x86_64
/usr/bin/qemu-kvm -m 2048 -cdrom Fedora-19-x86_64-DVD.iso -boot d -vnc :10 -vga qxl
--- Additional comment from Mike FABIAN on 2013-08-31 08:07:40 CEST ---
The problem still exists with Fedora-20-Alpha-TC2-x86_64-netinst.iso
and qemu-1.6.0-5.fc19.x86_64
Reproduce this bug using the following version:
host kernel: kernel-3.10.0-63.el7.x86_64
qemu-kvm-1.5.3-24.el7.x86_64
1. Boot a guest with "-vga qxl -vnc :1"
# ionice -c 3 /usr/libexec/qemu-kvm -M q35 -nodefaults -cpu SandyBridge -enable-kvm -m 2048 -smp 8,sockets=2,cores=2,threads=2 -name rhel7 -uuid 6afa5f93-2d4f-420f-81c6-e5fdddbd1c83 -drive file=/home/RHEL-7.0-20131127.1.qcow2_v3-bak,if=none,id=drive-virtio-disk0,format=qcow2,serial=40c061dd-5d60-4fc5-865f-55db700407f0,werror=stop,rerror=stop,aio=threads -device virtio-blk-pci,scsi=off,drive=drive-virtio-disk0,id=virtio-disk0 -vga qxl -vnc :1 -monitor stdio -spice port=5900,disable-ticketing -qmp tcp:0:4445,server,nowait -netdev tap,id=hostnet0,ifname=guest14,script=/etc/ovs-ifup,downscript=/etc/ovs-ifdown,vhost=on -device virtio-net,netdev=hostnet0,mac=54:52:1b:35:3c:16,id=test
Actual results:
The screen has no pixel garbage.
Additional info:
Start guest with "-vga std -vnc :1" and "-vga cirrus -vnc: 1" and the screen has no pixel garbage.
Based on the above result, I think this bug is fixed.
This request was resolved in Red Hat Enterprise Linux 7.0.
Contact your manager or support representative in case you have further questions about the request.