** Changed in: qemu
Status: New => Fix Released
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https://bugs.launchpad.net/bugs/1882851
Title:
QEMU video freezes with "Guest disabled display" (virtio driver)
Status in QEMU:
This bug is now fixed with Linux 5.9-rc5, thank you.
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Title:
QEMU video freezes with "Guest disabled display" (virtio driver)
Status in QEMU:
Will the patch make it for 5.8?
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Title:
QEMU video freezes with "Guest disabled display" (virtio driver)
Status in QEMU:
New
Bug description
Yeah, I can reproduce the same exact behavior outside of QEMU with sway
and it's consistent to what I observed in QEMU.
> Hmm, happens with xorg only.
I think you were right all along about this, sorry.
Thanks for fixing this bug, feel free to close this bug as fixed.
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It looks like sway requires swayidle to wake up from sleep[1].
This works:
swayidle timeout 2 'swaymsg "output * dpms off"' resume 'swaymsg "output
* dpms on"'
1. https://github.com/swaywm/sway/issues/2914
** Bug watch added: github.com/swaywm/sway/issues #2914
https://github.com/swaywm/sway
Sway log after the crash.
** Attachment added: "swaylog.txt"
https://bugs.launchpad.net/qemu/+bug/1882851/+attachment/5383276/+files/swaylog.txt
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https://bugs.launchpad.net/bugs/1882
Gerd, thanks. I can confirm your patch fixes the problem with X, but
Wayland (sway) is still affected.
I tested X and wayland, and while the "Guest disabled display" no longer
hangs on X, it still does hangs under wayland.
Should I bisect again?
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I just sanity checked, and can confirm the bad commit causes it, and
going back one commit makes it work.
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Title:
QEMU video freezes with "Guest
** Attachment added: "bisectlog.txt"
https://bugs.launchpad.net/qemu/+bug/1882851/+attachment/5383160/+files/bisectlog.txt
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Title:
QEMU vide
OK, I was able to bisect, here is the result:
[diego@arch-zoom linux]$ git bisect bad
3954ff10e06e4fbc548fc02ff1fcaaac3228fed5 is the first bad commit
commit 3954ff10e06e4fbc548fc02ff1fcaaac3228fed5
Author: Gerd Hoffmann
Date: Thu Dec 12 13:53:44 2019 +0100
drm/virtio: skip set_scanout if
I can reproduce it with current linux git master[1].
1. git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
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Title:
QEMU video fre
Gerd: I tried the LTS kernel on Arch Linux (5.4.46-1-lts) and I can't
reproduce the bug with this kernel.
It works as expected: `xset dpms force off' triggers the "Guest disabled
display" and it disappears after moving the mouse.
Could it be a regression in virtio_gpu?
I guess I'll try the lates
> Hmm, happens with xorg only.
Nope, I can reproduce it with sway as well (which is another Wayland
compositor).
To reproduce it with sway, just do: swaymsg "output * dpms off" and then
should you see "Guest disabled display", at that point I'm unable to get
back image.
I tried the sendkey ctrl-
I can't wake up the screen after hitting keys or moving the mouse after
turning off the screen with sway.
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Title:
QEMU video freezes with "Guest
Hmm, happens with xorg only.
Wayland behaves as expected (any mouse/kbd event wakes up the screen).
Which pretty much implies this is a guest bug.
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`xset dpms force off' on the guest is a good way to reproduce it.
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Title:
QEMU video freezes with "Guest disabled display" (virtio driver)
Stat
My bad, the workaround works, it's just a bit tricky.
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Title:
QEMU video freezes with "Guest disabled display" (virtio driver)
Status in QEMU:
Strange, that workaround doesn't work anymore.
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Title:
QEMU video freezes with "Guest disabled display" (virtio driver)
Status in QEMU:
New
OK, I found a workaround: sendkey ctrl-alt-f1 from the QEMU console
(ctrl alt 2) then I can switch back to X and continue from where I left
off.
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