09:35 <josch> Hi narmstrong, minute told me to get into contact with you about this issue. After upgrading to linux 6.12, the MNT Reform with Banana Pi CM4 A311D no longer printed anything to its internal display anymore. Backlight still works but no content shows up. I bisected the upsteram kernel between 6.11 and 6.12 and found that the offending commit is d97e71e449373efbd2403f1d7a32d416599f32ac. We are now

09:35 <josch> reverting that commit to make things work again with the BPI CM4 on the MNT Reform.

09:36 <josch> That's this commit: https://patchwork.freedesktop.org/patch/602548/

09:36 <josch> Unfortunately, I'm a complete kernel noob, so I am afraid I have not much more input to present other than my git bisect results that lead up to this commit and that reverting it restored the display functionality for us.

11:15 <f_> oof those SD cards die really fast

11:16 <f_> I need to get more for u-boot-spl testing :D

11:28 <f_> Or something is wrong.

11:32 <f_> This is weird: Neither U-Boot SPL nor BL2 like my sd

11:34 <f_> And the SD itself isn't some no-name brand anyway

11:35 <f_> (it's samsung)

12:04 <machinehum> f_: Is there a preferred place to buy the chips?

12:05 <machinehum> I just want to understand costing

13:08 <josch> f_: the sd-card of my digital camera died a few weeks ago and i sent it to a company specialized in data recovery from dead sd-cards. I asked them for advice on what a good quality brand/model would be. They told me that in their experience, every manufacturer is crapy as they all supposedly just glue some random flash chip/controller combo in there which is the cheapest at the moment.

13:09 <josch> mine was a sandisk card and they had to first file away the surface layer as without a microscope you cannot tell from the sandisk sd-card model what they actually have in the card in terms of controller/flash combo...

13:10 <josch> apparently, as far as consumer sd-cards are concerned, there is no brand where you can reliably say that model X from company Y always has exactly *this* controller/flash in it...

14:33 <f_> josch: I mean, never trust SD cards for important data

14:33 <f_> machinehum: I'm not so sure what you mean

14:33 <f_> you want to buy amlogic SoCs?

15:23 <josch> f_: never trust any pice of storage tech and always expect things to break tomorrow :)

15:28 <f_> :)

15:28 <f_> though SD cards tend to die faster

15:32 <josch> definitely