Hi everyone,
$ cd Work/kernel/ubuntu-jammy/
~/Work/kernel/ubuntu-jammy$ git log --grep 'Revert "drm/qxl: simplify
qxl_fence_wait"'
commit 1b146e3dc802253fd9a6e29e2d3b06d003fe9182
Author: Alex Constantino <[email protected]>
Date: Thu Apr 4 19:14:48 2024 +0100
Revert "drm/qxl: simplify qxl_fence_wait"
...
~/Work/kernel/ubuntu-jammy$ git describe --contains
1b146e3dc802253fd9a6e29e2d3b06d003fe9182
Ubuntu-5.15.0-115.125~199
~/Work/kernel/ubuntu-jammy$ cd ..
~/Work/kernel$ cd ubuntu-noble/
~/Work/kernel/ubuntu-noble$ git log --grep 'Revert "drm/qxl: simplify
qxl_fence_wait"' origin/master-next
commit ee451375fd8b767eb91721fa389b022f1582cb0f
Author: Alex Constantino <[email protected]>
Date: Thu Apr 4 19:14:48 2024 +0100
Revert "drm/qxl: simplify qxl_fence_wait"
...
~/Work/kernel/ubuntu-noble$ git describe --contains
ee451375fd8b767eb91721fa389b022f1582cb0f
Ubuntu-6.8.0-38.38~331
This has been fixed in 5.15.0-115-generic or later, and 6.8.0-38-generic
or later.
Let me know if you need any more help.
Thanks,
Matthew
** Also affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Changed in: xserver-xorg-video-qxl (Ubuntu)
Status: Confirmed => Invalid
** Also affects: linux (Ubuntu Jammy)
Importance: Undecided
Status: New
** Also affects: xserver-xorg-video-qxl (Ubuntu Jammy)
Importance: Undecided
Status: New
** Also affects: linux (Ubuntu Noble)
Importance: Undecided
Status: New
** Also affects: xserver-xorg-video-qxl (Ubuntu Noble)
Importance: Undecided
Status: New
** No longer affects: xserver-xorg-video-qxl (Ubuntu Jammy)
** No longer affects: xserver-xorg-video-qxl (Ubuntu Noble)
** Changed in: linux (Ubuntu)
Status: New => Fix Released
** Changed in: linux (Ubuntu Jammy)
Status: New => Fix Released
** Changed in: linux (Ubuntu Noble)
Status: New => Fix Released
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You received this bug notification because you are a member of Desktop
Packages, which is subscribed to xserver-xorg-video-qxl in Ubuntu.
https://bugs.launchpad.net/bugs/1972914
Title:
frequent 15-sec guest freeze with ubuntu 22.04 host and guest
Status in linux package in Ubuntu:
Fix Released
Status in xserver-xorg-video-qxl package in Ubuntu:
Invalid
Status in linux source package in Jammy:
Fix Released
Status in linux source package in Noble:
Fix Released
Bug description:
I'm running a new installation of Ubuntu 22.04 Desktop on a Thinkpad
T450s (core i5-5200, 2 cores / 4 vCPUs, 12 GB memory). Using the virt-
manager GUI, I performed what I believe is a simple, plain-vanilla
installation of an Ubuntu 22.04 guest running under qemu/kvm with 2
vCPUs and 4 GB memory.
I'm seeing very frequent, 15-second freezes of the guest. When it
happens, the guest is completely unresponsive. After about 15 seconds,
it works normally again, until the next freeze. The duration of the
freeze appears to be the same every time. The guest isn't doing much -
just open the calculator app and click number buttons. The freeze
doesn't happen if I don't interact with the guest (just leave the
system monitor running in the guest, so I can see that it's not
frozen).
I observe the freeze when I have 2 of the 4 vCPUs dedicated to the
guest. I do NOT observe it when I have only one vCPU dedicated to the
guest.
Both the host and guest are using only a small fraction of the memory
available to them. When the problem happens, the host indicates that
CPU usage is very low across all vCPUs. The host appears to be
operating normally when the guest is frozen.
I see the following pair of lines in the guest syslog every time the
freeze occurs (and only when the freeze occurs):
May 10 13:48:40 qemu-jammy kernel: [ 144.259799] qxl 0000:00:01.0:
object_init failed for (8298496, 0x00000001)
May 10 13:48:40 qemu-jammy kernel: [ 144.259819]
[drm:qxl_alloc_bo_reserved [qxl]] *ERROR* failed to allocate VRAM BO
I don't see anything in the host syslog that correlates with the
freeze.
If I choose "Virtio" in the Video drop-down in the virt-manager GUI,
with "3D acceleration" UNchecked, the guest works fine, and the freeze
never happens. Unfortunately, that loses fractional scaling, which is
important to me. If I check "3D acceleration," the guest won't boot.
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1972914/+subscriptions
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