Hi Gerd,

I tested this bug on guest:winXP-32 with qemu-kvm-0.12.1.2-2.133.el6, Failed. 
The max supported Modes is 1920*1440. (with patch) Could not find 2560*1440.

I tested again on the same guest with qemu-kvm-0.12.1.2-2.113.el6,
the max supported Modes is 2560*1600. (without patch)

Why the max supported resolution changes to more small(with patch)?

What guest and what drivers you are testing with?

The driver referenced requires the new qxl device added by the patches and doesn't work with qemu-kvm-0.12.1.2-2.113.el6 ...

Just wrote up http://lacrosse.corp.redhat.com/~ghoffman/spice/bugs.txt

Created attachment 480643 [details]
screenshot_driver_version

The qemu-kvm support is already there, the remaining problem is a driver one (in X the current driver is good enough, but the windows driver has a check that removes modes with >2000 in any coordinate), the cloned bug #690417 was openned for that.

Alon

This bug was reopened after (or because of/related to) comment 8, since testing on windows xp failed. However, this turned out to be specifically a windows driver bug, for which bug #690417 was cloned. qemu-kvm is in fact good enough and so I'm returning this bug to MODIFIED (no further changes to qemu-kvm are needed). See #690417 comment 3 for a driver scratch build pending qa to verify the fix. Linux guests can already see 2560x1440 with the qxl xorg driver.

Alon

Verified in qemu-kvm-0.12.1.2-2.133.el6.

Tested in linux and windows guest, all can switch the screen resolution to 2560*1440.

qxl driver version:
xorg-x11-drv-qxl-0.0.12-9.el6.x86_64
for windows qxl driver https://bugzilla.redhat.com/show_bug.cgi?id=690417#c5

cmd:
/usr/libexec/qemu-kvm -drive file='/home/image/RHEL-Server-6.0-64.qcow2',index=0,if=none,id=drive-ide0-0-0,media=disk,cache=none,format=qcow2 -device ide-drive,bus=ide.0,unit=0,drive=drive-ide0-0-0,id=ide0-0-0 -device rtl8139,netdev=id4goLGK,mac=9a:52:99:ed:f1:00,id=ndev00id4goLG0,bus=pci.0,addr=0x3 -netdev tap,id=id4goLGK,ifname='t0-225502-vqKX',script='/etc/qemu-ifup-switch',downscript='no' -m 2048 -smp 2 -cpu cpu64-rhel6,+sse2,+x2apic -spice port=5930,disable-ticketing -vga qxl -rtc base=utc,clock=host,driftfix=none -M rhel6.1.0 -boot c -usbdevice tablet -no-kvm-pit-reinjection -enable-kvm -monitor stdio

(In reply to comment #20)
> Verified in qemu-kvm-0.12.1.2-2.133.el6.
> 
> Tested in linux and windows guest, all can switch the screen resolution to
> 2560*1440.

Tested guest: winXP-32 and RHEL6.0-64

move it to verified based on comment#20 and comment#21

    Technical note added. If any revisions are required, please edit the "Technical Notes" field
    accordingly. All revisions will be proofread by the Engineering Content Services team.
    
    New Contents:
Cause: old verion of qemu-kvm spice code was included, and it didn't support 2560x1440 display resolution.

Consequence: no 2560x1440 support on qxl.

Change: qemu-kvm spice code was updated to a newer version.

Result: 2560x1440 display resolution is now supported by qxl

An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHSA-2011-0534.html

An advisory has been issued which should help the problem
described in this bug report. This report is therefore being
closed with a resolution of ERRATA. For more information
on therefore solution and/or where to find the updated files,
please follow the link below. You may reopen this bug report
if the solution does not work for you.

http://rhn.redhat.com/errata/RHSA-2011-0534.html