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| author | Christian Krinitsin <mail@krinitsin.com> | 2025-05-30 16:52:07 +0200 |
|---|---|---|
| committer | Christian Krinitsin <mail@krinitsin.com> | 2025-05-30 16:52:17 +0200 |
| commit | 9260319e7411ff8281700a532caa436f40120ec4 (patch) | |
| tree | 2f6bfe5f3458dd49d328d3a9eb508595450adec0 /gitlab/issues/target_missing/host_missing/accel_missing/1107.toml | |
| parent | 225caa38269323af1bfc2daadff5ec8bd930747f (diff) | |
| download | emulator-bug-study-9260319e7411ff8281700a532caa436f40120ec4.tar.gz emulator-bug-study-9260319e7411ff8281700a532caa436f40120ec4.zip | |
gitlab scraper: download in toml and text format
Diffstat (limited to 'gitlab/issues/target_missing/host_missing/accel_missing/1107.toml')
| -rw-r--r-- | gitlab/issues/target_missing/host_missing/accel_missing/1107.toml | 34 |
1 files changed, 0 insertions, 34 deletions
diff --git a/gitlab/issues/target_missing/host_missing/accel_missing/1107.toml b/gitlab/issues/target_missing/host_missing/accel_missing/1107.toml deleted file mode 100644 index b89a67b9..00000000 --- a/gitlab/issues/target_missing/host_missing/accel_missing/1107.toml +++ /dev/null @@ -1,34 +0,0 @@ -id = 1107 -title = "Virtual monitor heads are not \"connected\" until viewed in a front end" -state = "opened" -created_at = "2022-07-14T08:21:50.853Z" -closed_at = "n/a" -labels = ["device:graphics", "device:virtio"] -url = "https://gitlab.com/qemu-project/qemu/-/issues/1107" -host-os = "Debian 11" -host-arch = "AMD64" -qemu-version = "QEMU emulator version 7.0.50 (v7.0.0-2471-g8e3d85d36b)" -guest-os = "Linux" -guest-arch = "Arm Aarch64" -description = """When you attach a virtual GPU to a guest, qemu appears to only "attach" a virtual monitor to an output port when that virtual display is -viewed using the GUI. For example, when you boot using the above command line, there will be four displays in ```/sys/class/drm/``` on the guest, -```card0-Virtual-1``` through to ```card0-Virtual-4```. In each of these directories, there is an "enabled" file, which contains either -"enabled" or "disabled". These contain "disabled" until you switch tab/view to look at it using the GUI, at which point they change to "enabled". - -This causes a problem for us because Weston will not initialise displays that do not have a monitor attached, meaning the system we are trying -to boot fails because not all the Weston display surfaces are available. - -There does not appear to be a command line option to force virtual monitors to be attached to virtual displays immediately. Looking through the -Gtk user interface code (and the other front ends) there does not appear to be a call into the qemu core that requests the connection of a virtual -monitor to the virtual displays - my guess is that qemu only connects a monitor when a render request first happens (or similar), but I have not followed the code paths deeper than the source files in ```QEMU/ui/```. - -I also tried using the ```screengrab``` command to screenshot each head, but this does not need sufficient to cause the display to be marked -enabled in the guest. - -While we could possibly automate the GUI using some external tool, we ultimately need to run this in a CI environment using -```egl-headless``` or similar.""" -reproduce = """1. Launch qemu with virtio-gpu-gl setting max_outputs > 1 -2. On guest, ```cat /sys/drm/class/card0-Virtual-2``` - it reads "disabled" -3. On host, switch the view to look at the second display ("virtio-gpu-gl-pci.1") -4. On guest, ```cat /sys/drm/class/card0-Virtual-2``` - it now reads "enabled"""" -additional = "n/a" |