Control: reassign -1 mesa-vulkan-drivers 26.2.6-1 Control: retitle -1 mesa-vulkan-drivers: lavapipe swapchain-resize race makes otpclient crash when resizing its window Control: affects -1 otpclient
According to Mistral AI (short answer): The crash is in Mesa's lavapipe (the software Vulkan driver, libvulkan_lvp.so), not in otpclient itself. GTK4 (which otpclient uses) tries its Vulkan renderer first; when no hardware Vulkan device is usable it silently falls back to lavapipe, and lavapipe is a known-fragile, explicitly non-conformant implementation that segfaults on the swapchain-recreate path that GTK4 exercises when you resize a window. The "X server running on host A" correlation is real but misleading: what actually matters is whether you have an active local logind session on host A, because that's what grants you access to /dev/dri/renderD128. I can confirm about /dev/dri/renderD128 with "getfacl /dev/dri/renderD128": * Without a local X session active, I get in the output: user:lightdm:rw- * With a local X session active, I get in the output: user:vlefevre:rw- Mistral AI also gave me workarounds: GSK_RENDERER=cairo otpclient GSK_RENDERER=ngl otpclient I confirm that they both work. It also says: "The real fix belongs in Mesa (lavapipe swapchain-resize race)". Reassigning to mesa-vulkan-drivers (which provides libvulkan_lvp.so). -- Vincent Lefèvre <[email protected]> - Web: <https://www.vinc17.net/> 100% accessible validated (X)HTML - Blog: <https://www.vinc17.net/blog/> Work: CR INRIA - computer arithmetic / Pascaline project (LIP, ENS-Lyon)
