Hide Forgot
remote-viewer connected to VM with VGA driver unpredictable closes connection. virt-viewer-2.0-12.el7.x86_64 qemu-kvm-1.5.3-126.el7_3.3.x86_64 Guest is RHEL6.9 How reproducible: always Steps to Reproduce: 1. Create a VM in RHV with VGA video adapter. 2. Connect to the VM with remote-viewer. 3. Change resolution to 1024x768: xrandr --output default --mode 1024x768 4. Desktop must fit to remote-viewer window. 5. Change resolution to 1280x768: xrandr --output default --mode 1280x768 6. Make sure that desktop doesn't fit into remote-viewer window. It is necessary to move mouse to the bottom/upper border to move desktop. 7. Close remote-viewer. 8. Open connection to the same VM. 9. Move mouse around guest desktop. remote-viewer closes connection.
Created attachment 1238714 [details] remote-viewer log with --gtk-vnc-debug
Please attach server logs
Created attachment 1238795 [details] Log from /var/log/libvirt/qemu/6.9_32.log To get VNC debug it is necessary to re-compile qemu: https://github.com/qemu/qemu/blob/master/ui/vnc.h#L49
vnc specific, reassigning Are there any changes with rebased gtk-vnc ?
I'm not seeing anything bad from gtk-vnc logs - all messages show normal operation, until we get this: (remote-viewer:27714): gtk-vnc-DEBUG: vncconnection.c Read error Error receiving data: Connection reset by peer which shows the QEMU closed the VNC client connection. This makes me suspect that QEMU is at fault. To diagnose this, I think you'll need to rebuild qemu with VNC debug turned on and capture a log it produces. It would also be interesting to see of the same behaviour is seen with qemu-kvm-rhev, as that's a newer version of QEMU. Given length of time since 1.5.3 QEMU, there's a fair chance of some VNC/display bug being fixed in QEMU since then.
Are you able to obtain the information requested from a debug build of QEMU. If not, there isn't really any way to take this bug forward to resolution.
Cannot reproduce with RHEL 7.4 client virt-viewer-5.0-7.el7.x86_64.