Launching Firefox Generates a Kernel Message: [drm:radeon 0000:01:00.0] fifo: SCHED_ERROR 0d on Ubuntu

Linux Support
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Hey Don11,

This kernel message is related to the Nouveau driver for NVIDIA GPUs, but you mentioned using an AMD Radeon RX 6600 XT, which is interesting. :exploding_head: It seems like there’s a mix-up somewhere, as you shouldn’t be seeing Nouveau messages with an AMD card.

The message itself indicates a scheduling error in the GPU’s command queue, which isn’t critical if it doesn’t affect your usage or performance. However, it’s peculiar that it’s only triggered by Firefox.

A couple of things to consider:

  1. Ensure your system is fully updated (sudo apt update && sudo apt upgrade). Sometimes, these issues are resolved with the latest kernel and driver updates.
  2. Double-check if there’s any residual or mistakenly installed Nouveau driver configuration. Since you’re using an AMD card, Nouveau shouldn’t be in play.
  3. Try disabling hardware acceleration in Firefox (Preferences > General > Performance) and see if that stops the error. This could isolate the issue to how Firefox interacts with your GPU.
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