This should be fixed in ubuntu-raspi-settings by granting access to
/dev/dma_heap/linux,cma via the uaccess mechanism. After discussion with
the kernel team, this should be reasonably safe.
** Also affects: ubuntu-raspi-settings (Ubuntu)
Importance: Undecided
Status: New
** Changed in: ubuntu-raspi-settings (Ubuntu)
Assignee: (unassigned) => Dave Jones (waveform)
** Changed in: ubuntu-raspi-settings (Ubuntu)
Milestone: None => ubuntu-25.04
** Changed in: libcamera (Ubuntu)
Milestone: ubuntu-25.04-feature-freeze => None
** Changed in: ubuntu-raspi-settings (Ubuntu)
Status: New => Confirmed
** Changed in: libcamera (Ubuntu)
Status: Confirmed => Invalid
** Changed in: ubuntu-raspi-settings (Ubuntu)
Importance: Undecided => High
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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:
Confirmed
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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