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[Qemu-devel] [Bug 1843151] Re: Regression: QEMU 4.1.0 qxl and KMS resolu
From: |
James Harvey |
Subject: |
[Qemu-devel] [Bug 1843151] Re: Regression: QEMU 4.1.0 qxl and KMS resoluiton only 4x10 |
Date: |
Thu, 12 Sep 2019 04:17:46 -0000 |
Finding a minimal case did shed some light on this.
Using QEMU's native graphics window, this works fine:
$ /usr/bin/qemu-system-x86_64 \
-m 1G \
-blockdev
raw,node-name=install_iso,read-only=on,file.driver=file,file.filename=/mnt/losable/ISOs/archlinux-2019.09.01-x86_64.iso
\
-device ide-cd,drive=install_iso,bus=ide.0,bootindex=0
But, introducing spice reproduces the problem:
$ /usr/bin/qemu-system-x86_64 \
-m 1G \
-blockdev
raw,node-name=install_iso,read-only=on,file.driver=file,file.filename=/mnt/losable/ISOs/archlinux-2019.09.01-x86_64.iso
\
-spice unix,addr=/tmp/spice.qxl.sock,disable-ticketing \
-device ide-cd,drive=install_iso,bus=ide.0,bootindex=0 \
-vga qxl
$ remote-viewer "spice+unix:///tmp/spice.qxl.sock"
I've been running remote-viewer (from virt-viewer package) since around
March 13, version 8.0 since then. It's only when upgrading QEMU from
4.0.0 to 4.1.0 that introduces the problem.
Running remote-viewer this way also shows that it outputs these, right
when KMS changes resolution:
(remote-viewer:15090): GLib-GObject-WARNING **: 23:56:03.914: value "64"
of type 'gint' is invalid or out of range for property 'desktop-width'
of type 'gint'
(remote-viewer:15090): GLib-GObject-WARNING **: 23:56:03.915: value "64"
of type 'gint' is invalid or out of range for property 'desktop-height'
of type 'gint'
When downgrading to QEMU 4.0.0, remote-viewer STILL outputs these lines
regarding desktop-width and height, when KMS changes resolution.
In case it helps, below are spice-debug logs from remote-viewer. I've
included the whole log, but also added a bunch of spacing and a header
showing the second worth of output correlating with the KMS resolution
change.
QEMU 4.0.0 without the bug: http://ix.io/1USn
QEMU 4.1.0 with the bug: http://ix.io/1USo
So, it's always possible the fix might need to be in remote-viewer, but
at minimum, the case it would need to handle properly wasn't being given
to it until QEMU 4.1.0.
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https://bugs.launchpad.net/bugs/1843151
Title:
Regression: QEMU 4.1.0 qxl and KMS resoluiton only 4x10
Status in QEMU:
New
Bug description:
Host is Arch Linux. linux 5.2.13, qemu 4.1.0. virt-viewer 8.0.
Guest is Arch Linux Sept 2019 ISO. linux 5.2.11.
Have replicated this both on a system using amdgpu and one using
integrated ASPEED graphics.
Downgrading from 4.1.0 to 4.0.0 works as usual, see:
https://www.youtube.com/watch?v=NyMdcYwOCvY
Going back to 4.1.0 reproduces, see:
https://www.youtube.com/watch?v=H3nGG2Mk6i0
4.1.0 displays fine until KMS kicks in.
Using 4.1.0 with virtio-vga doesn't cause this.
To manage notifications about this bug go to:
https://bugs.launchpad.net/qemu/+bug/1843151/+subscriptions
- [Qemu-devel] [Bug 1843151] [NEW] Regression: QEMU 4.1.0 qxl and KMS resoluiton only 4x10, James Harvey, 2019/09/07
- [Qemu-devel] [Bug 1843151] Re: Regression: QEMU 4.1.0 qxl and KMS resoluiton only 4x10, James Harvey, 2019/09/07
- [Qemu-devel] [Bug 1843151] Re: Regression: QEMU 4.1.0 qxl and KMS resoluiton only 4x10, Dr. David Alan Gilbert, 2019/09/09
- [Qemu-devel] [Bug 1843151] Re: Regression: QEMU 4.1.0 qxl and KMS resoluiton only 4x10,
James Harvey <=
- [Qemu-devel] [Bug 1843151] Re: Regression: QEMU 4.1.0 qxl and KMS resoluiton only 4x10, James Harvey, 2019/09/12
- [Qemu-devel] [Bug 1843151] Re: Regression: QEMU 4.1.0 qxl and KMS resoluiton only 4x10, James Harvey, 2019/09/12
- [Qemu-devel] [Bug 1843151] Re: Regression: QEMU 4.1.0 qxl and KMS resoluiton only 4x10, Dr. David Alan Gilbert, 2019/09/12
- [Qemu-devel] [Bug 1843151] Re: Regression: QEMU 4.1.0 qxl and KMS resoluiton only 4x10, James Harvey, 2019/09/12
- [Qemu-devel] [Bug 1843151] Re: Regression: QEMU 4.1.0 qxl and KMS resoluiton only 4x10, Dr. David Alan Gilbert, 2019/09/12
- [Qemu-devel] [Bug 1843151] Re: Regression: QEMU 4.1.0 qxl and KMS resoluiton only 4x10, James Harvey, 2019/09/12
- [Qemu-devel] [Bug 1843151] Re: Regression: QEMU 4.1.0 qxl and KMS resoluiton only 4x10, James Harvey, 2019/09/12
- [Qemu-devel] [Bug 1843151] Re: Regression: QEMU 4.1.0 qxl and KMS resoluiton only 4x10, Dr. David Alan Gilbert, 2019/09/12
- [Qemu-devel] [Bug 1843151] Re: Regression: QEMU 4.1.0 qxl and KMS resoluiton only 4x10, James Harvey, 2019/09/12
- [Qemu-devel] [Bug 1843151] Re: Regression: QEMU 4.1.0 qxl and KMS resoluiton only 4x10, Dr. David Alan Gilbert, 2019/09/19