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Created attachment 1975542[details]
Screen graphics comparison: left is screenshot right is actual screen via vnc
Created attachment 1975542[details]
Screen graphics comparison: left is screenshot right is actual screen via vnc
Description of problem:
When doing a screendump, the colors are not right (s. attachment).
Version-Release number of selected component (if applicable):
qemu-kvm-8.0.0-6.el9.s390x
How reproducible:
100%
Steps to Reproduce:
1. Start a VM with graphics
2. Take a screenshot (e.g. virsh screenshot vm
3. Compare the screenshot with the actual graphics
Actual results:
Colors are wrong
Expected results:
The view is the same
Additional info:
Zhiyi Guo found this is likely the upstream issue https://gitlab.com/qemu-project/qemu/-/issues/1622 with upstream commit https://gitlab.com/qemu-project/qemu/-/commit/9acb3d7e5202b3e667f12829c8d553f8574d1743
I'll see if this fixes the issue.
Fangge confirmed it reproduces on x86_64
(In reply to smitterl from comment #0)
>
> Additional info:
> Zhiyi Guo found this is likely the upstream issue
> https://gitlab.com/qemu-project/qemu/-/issues/1622 with upstream commit
> https://gitlab.com/qemu-project/qemu/-/commit/
> 9acb3d7e5202b3e667f12829c8d553f8574d1743
With latest upstream release 8.0.3 that contains this commit, the output looks good.
> I'll see if this fixes the issue.
> Fangge confirmed it reproduces on x86_64
Marc-Andre - can we get this backported for 9.3.0 please.
If you'd like to provide thoughts related to a 9.2.0 z-stream please do so. I'm not convinced without proof that this would affect our LPs like OpenShift or OpenStack
Comment 6Marc-Andre Lureau
2023-07-15 13:10:25 UTC
(In reply to John Ferlan from comment #5)
> If you'd like to provide thoughts related to a 9.2.0 z-stream please do so.
> I'm not convinced without proof that this would affect our LPs like
> OpenShift or OpenStack
It should be as "easy" to backport for 9.2.0 (qemu-kvm-7.2.0-14.el9_2.N ?). Indeed, I am not convinced many users are using the PNG format, and it's not critical either to have bad colors.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory (Moderate: qemu-kvm security, bug fix, and enhancement update), and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.
https://access.redhat.com/errata/RHSA-2023:6368