[Bug 2091380] Re: root permissions required to r/w to DMA heap for libpisp on RPi5

[Launchpad Bug Tracker]

This bug was fixed in the package ubuntu-raspi-settings - 25.04.3

---------------
ubuntu-raspi-settings (25.04.3) plucky; urgency=medium

  * 70-pi-camera.rules: grant access to /dev/dma_heap/linux,cma for camera
    module operation (LP: #2091380)

 -- Dave Jones <dave.jones at canonical.com>  Fri, 04 Apr 2025 11:12:45
+0100

** Changed in: ubuntu-raspi-settings (Ubuntu)
       Status: Confirmed => Fix Released

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https://bugs.launchpad.net/bugs/2091380

Title:
  root permissions required to r/w to DMA heap for libpisp on RPi5

Status in libcamera package in Ubuntu:
  Invalid
Status in ubuntu-raspi-settings package in Ubuntu:
  Fix Released

Bug description:
  This affects libcamera on the Raspberry Pi 5. The new libpisp and PiSP driver (https://bugs.launchpad.net/ubuntu/+bug/2089646 and https://code.launchpad.net/~r41k0u/ubuntu/+source/libcamera/+git/libcamera/+merge/477052) needs to r/w to /dev/dma_heap/linux,cma
  /dev/dma_heap/limux,cma only has r/w permissions for the root user. This needs to be worked around to make cameras work on RPi5.

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