Public bug reported:
Also filed upstream:
https://gitlab.com/libvirt/libvirt/-/merge_requests/151
I recently upgraded from Ubuntu 21.10 to 22.04. I have an existing VM
with virtio video and gl-accelerated Spice display which previously
worked.
After the upgrade, virt-manager and virt-viewer display a blank screen.
In the qemu libvirt logs, I observe many repetitions of:
qemu_spice_gl_scanout_texture: failed to get fd for texture
dmesg contains these AppArmor errors:
[250001.100362] audit: type=1400 audit(1651958128.696:706): apparmor="DENIED"
operation="open" profile="libvirt-98a090a8-2fdf-463c-959b-810e5bc88b0d"
name="/sys/devices/pci0000:00/0000:00:02.0/revision" pid=132725
comm="qemu-system-x86" requested_mask="r" denied_mask="r" fsuid=64055 ouid=0
[250001.100367] audit: type=1400 audit(1651958128.696:707): apparmor="DENIED"
operation="open" profile="libvirt-98a090a8-2fdf-463c-959b-810e5bc88b0d"
name="/sys/devices/pci0000:00/0000:00:02.0/config" pid=132725
comm="qemu-system-x86" requested_mask="r" denied_mask="r" fsuid=64055 ouid=0
Modifying the AppArmor config for this VM to permit access to the
`revision` and `config` sysfs paths fixed this issue for me. The VM
display is visible and virgl is working. I was able to do so by adding
the following line:
"/sys/devices/**/{uevent,vendor,device,subsystem_vendor,subsystem_device,config,revision}"
r,
** Affects: libvirt (Ubuntu)
Importance: Undecided
Status: New
** Description changed:
Also filed upstream:
https://gitlab.com/libvirt/libvirt/-/merge_requests/151
I recently upgraded from Ubuntu 21.10 to 22.04. I have an existing VM
with virtio video and gl-accelerated Spice display which previously
worked.
After the upgrade, virt-manager and virt-viewer display a blank screen.
In the qemu libvirt logs, I observe many repetitions of:
- ```
qemu_spice_gl_scanout_texture: failed to get fd for texture
- ```
dmesg contains these AppArmor errors:
- ```
[250001.100362] audit: type=1400 audit(1651958128.696:706): apparmor="DENIED"
operation="open" profile="libvirt-98a090a8-2fdf-463c-959b-810e5bc88b0d"
name="/sys/devices/pci0000:00/0000:00:02.0/revision" pid=132725
comm="qemu-system-x86" requested_mask="r" denied_mask="r" fsuid=64055 ouid=0
[250001.100367] audit: type=1400 audit(1651958128.696:707): apparmor="DENIED"
operation="open" profile="libvirt-98a090a8-2fdf-463c-959b-810e5bc88b0d"
name="/sys/devices/pci0000:00/0000:00:02.0/config" pid=132725
comm="qemu-system-x86" requested_mask="r" denied_mask="r" fsuid=64055 ouid=0
- ```
Modifying the AppArmor config for this VM to permit access to the
`revision` and `config` sysfs paths fixed this issue for me. The VM
display is visible and virgl is working.
** Description changed:
** Description changed:
Also filed upstream:
https://gitlab.com/libvirt/libvirt/-/merge_requests/151
I recently upgraded from Ubuntu 21.10 to 22.04. I have an existing VM
with virtio video and gl-accelerated Spice display which previously
worked.
After the upgrade, virt-manager and virt-viewer display a blank screen.
In the qemu libvirt logs, I observe many repetitions of:
qemu_spice_gl_scanout_texture: failed to get fd for texture
dmesg contains these AppArmor errors:
[250001.100362] audit: type=1400 audit(1651958128.696:706): apparmor="DENIED"
operation="open" profile="libvirt-98a090a8-2fdf-463c-959b-810e5bc88b0d"
name="/sys/devices/pci0000:00/0000:00:02.0/revision" pid=132725
comm="qemu-system-x86" requested_mask="r" denied_mask="r" fsuid=64055 ouid=0
[250001.100367] audit: type=1400 audit(1651958128.696:707): apparmor="DENIED"
operation="open" profile="libvirt-98a090a8-2fdf-463c-959b-810e5bc88b0d"
name="/sys/devices/pci0000:00/0000:00:02.0/config" pid=132725
comm="qemu-system-x86" requested_mask="r" denied_mask="r" fsuid=64055 ouid=0
Modifying the AppArmor config for this VM to permit access to the
`revision` and `config` sysfs paths fixed this issue for me. The VM
- display is visible and virgl is working.
+ display is visible and virgl is working. I was able to do so by adding
+ the following line:
+
+
"/sys/devices/**/{uevent,vendor,device,subsystem_vendor,subsystem_device,config,revision}"
+ r,
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Bugs, which is subscribed to Ubuntu.
https://bugs.launchpad.net/bugs/1972075
Title:
Blank screen when viewing GL-accelerated virtio screen on 22.04
To manage notifications about this bug go to:
https://bugs.launchpad.net/ubuntu/+source/libvirt/+bug/1972075/+subscriptions
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