| 23 Aug 2025 |
 Grimmauld (migrated to @grimmauld:m.grimmauld.de) | Hey uh, i need the eldritch knowledge of Qt people:
https://github.com/NixOS/nixpkgs/pull/434327#issuecomment-3216591422
This backport is weird - freecad is built against qt6 on master and works just fine on wayland, but on this backport PR, it gets stuck and never actually opens the freecad window (the loading screen works fine, but after that closes it gets stuck on a bunch of ppoll calls and never progresses). Any idea why 25.05 qt6 wayland might behave that way?
| 09:09:53 |
| Grimmauld (migrated to @grimmauld:m.grimmauld.de) | * Hey uh, i need the eldritch knowledge of Qt people:
https://github.com/NixOS/nixpkgs/pull/434327#issuecomment-3216591422
This backport is weird - freecad is built against qt6 on master and works just fine on wayland, but on this backport PR, it (freecad-qt6) gets stuck and never actually opens the freecad window (the loading screen works fine, but after that closes it gets stuck on a bunch of ppoll calls and never progresses). Any idea why 25.05 qt6 wayland might behave that way?
| 09:10:10 |
 K900 ⚡️ | Uhh | 09:12:23 |
| K900 ⚡️ | Our Qt versions are identical at least | 09:12:31 |
| K900 ⚡️ | Try running it with QTLOGGINGRULES=qt.qpa.*=true | 09:12:40 |
| K900 ⚡️ | Try running it with QT_LOGGING_RULES=qt.qpa.*=true | 09:12:45 |
| Grimmauld (migrated to @grimmauld:m.grimmauld.de) | (qt.qpa.wayland) EGL not available
QOpenGLWidget is not supported on this platform.
QRhiGles2: Failed to create temporary context
QRhiGles2: Failed to create context
Failed to create QRhi for QBackingStoreRhiSupport
QOpenGLWidget: Failed to create context
huh
| 09:13:51 |
| Grimmauld (migrated to @grimmauld:m.grimmauld.de) | how does the one on master work and this explodes? | 09:14:02 |
| Grimmauld (migrated to @grimmauld:m.grimmauld.de) | like, egl should be available | 09:14:21 |
| Grimmauld (migrated to @grimmauld:m.grimmauld.de) | like, the version on master just succeeds, no log messages or anyhting | 09:15:20 |
| Grimmauld (migrated to @grimmauld:m.grimmauld.de) | do i need to explicitly add qtwayland or something? | 09:16:15 |
| Grimmauld (migrated to @grimmauld:m.grimmauld.de) | no, thats there already, what | 09:16:47 |
| K900 ⚡️ | Uhhh | 09:37:24 |
| K900 ⚡️ | Driver mismatch? | 09:37:31 |
| K900 ⚡️ | I don't remember the state of Mesa split on 25.05 | 09:37:37 |
| Grimmauld (migrated to @grimmauld:m.grimmauld.de) | maybe? So you are telling me i need a 25.05 VM to test this backport? | 09:40:31 |
| K900 ⚡️ | OK no our Mesa should be split | 09:41:47 |
| K900 ⚡️ | On 25.05 | 09:41:49 |
| K900 ⚡️ | Can you try running eglinfo from 25.05? | 09:41:57 |
| Grimmauld (migrated to @grimmauld:m.grimmauld.de) | i don't have a 25.05 machine around | 09:42:11 |
| K900 ⚡️ | Well you have a 25.05 nixpkgs | 09:42:27 |
| K900 ⚡️ | Presumably | 09:42:28 |
| K900 ⚡️ | I mean run it on the same setup you're running this on | 09:42:40 |
| K900 ⚡️ | But eglinfo from 25.0 | 09:42:43 |
| K900 ⚡️ | * But eglinfo from 25.05 | 09:42:43 |
| Grimmauld (migrated to @grimmauld:m.grimmauld.de) | right | 09:42:49 |
| Grimmauld (migrated to @grimmauld:m.grimmauld.de) | what am i looking for? | 09:47:30 |
| K900 ⚡️ | Explosions | 09:47:39 |
| K900 ⚡️ | Or lack thereof | 09:47:40 |
| Grimmauld (migrated to @grimmauld:m.grimmauld.de) | https://termbin.com/93pm | 09:47:57 |
