Rich Southward

hi @davidplowman thanks for your quick response. Here is the result from dma_heap  I'm not specifically running anything else, it's a very basic installation and this is the only...

hmm. that's interesting, I've got 6 PIs here, and just looked on a few others, and they have `vidbuf_cached -> system` as you suggest. I don't really know what this...

I've been reluctant to reboot, as I've been trying to replicate this error (which happened a few times in production) this is the first time I've seen it locally on...

I've been trying to replicate this all day, and almost gave up, but then rebooted the PIs and ran the script, it failed on two of the PIs and when...

It happened again this morning, after rebooting 3 times (I have 6 PIs here). And it has been a different PI each time it has occurred, so I don't think...

Here is the `dmesg` log, let me know if there are any other logs. This doesn't have the .., `cma: cma_alloc: linux,cma: alloc failed, req-size: 991 pages, ret: -12` (

I've rebooted the same machine, and it was back to `system` (as I expected), here is the `dmesg` content for this good boot. [rich_linux_cma_good.txt](https://github.com/user-attachments/files/16814124/rich_linux_cma_good.txt) I did try this yesterday, but...

This is the *good* one, I'll have to wait for it to happen again.. I'll try some re-boots ``` cat /proc/cpuinfo processor : 0 BogoMIPS : 108.00 Features : fp...

I've rebooted three times, and a different PI was set to `linux,cma` This is the cpuinfo for that PI (i.e. when it's in the 'bad' state) I can grant you...

I wonder if this happens quite frequently on PIs, but rarely gets noticed. I was originally just capturing in either 1/2 or full resolutions, it's only since I've been starting...