| 8 Apr 2025 |
 shapr | Anyway, I've been having fun installing all the kdePackages and trying them out, KSystemLog is the only one that's behaved strangely so far. | 18:01:43 |
| shapr | If anyone has a nifty KDE package they suggest I try out, I'd love to hear about it. | 19:12:16 |
| 9 Apr 2025 |
 eliasp | anyone running NixOS/Plasma6 on a Raspberry Pi 4B? the desktop performance is extremely sluggish, there are rendering artifacts when moving windows, etc.
Armbian runs quite nicely... | 08:05:27 |
 K900 | Mainline or vendor kernel? How much CMA? Mesa enabled? | 08:09:51 |
| K900 | Oh yeah, UEFI or uboot? If UEFI, ACPI or DT? | 08:13:34 |
| eliasp | using the raspberry-pi-4 module from nixos-hardware - all other hardware customizations are only related to enabling fkms-3d and fixing 802.11/bluetooth, so:
- Kernel:
pkgs.linuxKernel.packages.linux_rpi4
- CMA: 512
- uboot
- Mesa is enabled
kinfo output:
Operating System: NixOS 25.05
KDE Plasma Version: 6.3.4
KDE Frameworks Version: 6.12.0
Qt Version: 6.8.2
Kernel Version: 6.6.51 (64-bit)
Graphics Platform: Wayland
Processors: 4 × ARM Cortex-A72
Memory: 7.6 GiB of RAM
Graphics Processor 1: V3D 4.2.14.0
Graphics Processor 2: llvmpipe
Product Name: Raspberry Pi 4 Model B Rev 1.4�
U-Boot Version: 2025.01�
| 08:35:10 |
| eliasp | …and Alt+TAB crashes the kwin wayland compositor 😬
Apr 09 11:08:13 moria-rpi4 kwin_wayland_wrapper[6714]: DRM_IOCTL_MODE_CREATE_DUMB failed: Cannot allocate memory
Apr 09 11:08:13 moria-rpi4 kwin_wayland_wrapper[6714]: Failed to create scanout resource
Apr 09 11:08:13 moria-rpi4 kwin_wayland_wrapper[6714]: DRM_IOCTL_MODE_CREATE_DUMB failed: Cannot allocate memory
Apr 09 11:08:13 moria-rpi4 kwin_wayland_wrapper[6714]: Failed to create scanout resource
Apr 09 11:08:13 moria-rpi4 kwin_wayland_wrapper[6714]: DRM_IOCTL_MODE_CREATE_DUMB failed: Cannot allocate memory
Apr 09 11:08:13 moria-rpi4 kwin_wayland_wrapper[6714]: Failed to create scanout resource
Apr 09 11:08:13 moria-rpi4 kwin_wayland_wrapper[6714]: DRM_IOCTL_MODE_CREATE_DUMB failed: Cannot allocate memory
Apr 09 11:08:13 moria-rpi4 kwin_wayland_wrapper[6714]: Failed to create scanout resource
Apr 09 11:08:13 moria-rpi4 kwin_wayland_wrapper[6714]: KCrash: Application '.kwin_wayland-wrapped' crashing... crashRecursionCounter = 2
Apr 09 11:08:13 moria-rpi4 kwin_wayland[6714]: QRhiGles2: Failed to make context current. Expect bad things to happen.
Apr 09 11:08:13 moria-rpi4 kwin_wayland[6714]: Failed to create RHI (backend 2)
Apr 09 11:08:13 moria-rpi4 kwin_wayland[6714]: Failed to initialize graphics backend for OpenGL.
Apr 09 11:08:13 moria-rpi4 plasmashell[6727]: QQmlVMEMetaObject: Internal error - attempted to evaluate a function in an invalid context
Apr 09 11:08:13 moria-rpi4 plasmashell[6727]: file:///nix/store/5ffb7vi05bd0q774fmd5h0vmlpyj25hp-plasma-desktop-6.3.4/share/plasma/plasmoids/org.kde.plasma.taskmanager/contents/ui/main.qml:240: TypeError: Property 'modelIndex' of object Task_QMLTYPE_624(0x3011c00) is not a function
| 09:11:49 |
| eliasp | I might temporarily switch to 24.11 to see whether this changes anything | 09:50:35 |
| K900 | Yeah don't do any of that | 10:47:34 |
| K900 | Just run mainline | 10:47:36 |
