| === halvors1 is now known as halvors | ||
| === halvors1 is now known as halvors | ||
| === Eighth_Doctor is now known as Conan_Kudo | ||
| === Conan_Kudo is now known as Eighth_Doctor | ||
| ogra | juergh, have you seen my last comments on https://bugs.launchpad.net/ubuntu/+source/linux-raspi2/+bug/1881623 ? seems it is actually not related to modules at all but to the fact that USB is completely off with the 5.3 kernel on pi4/8GB while it works just fine with 5.4 | 13:22 |
|---|---|---|
| ubot5 | Ubuntu bug 1881623 in linux-raspi2 (Ubuntu) "USB support missing in initrd makes booting core with writable on USB impossible" [Undecided,Confirmed] | 13:22 |
| ogra | (this is why my own build of teh focal tree works well an switching to the pi-kernel snap breaks the world ut seems) | 13:23 |
| juergh | ogra, yeah. waveform just notified me yesterday that it's a problem specific to the pi4 rev1.4. | 13:25 |
| ogra | well, are there plans to go for 5.4 eventually ? it seems to work just well | 13:25 |
| ogra | (for core18 i mean indeed, given that UC20 is still far out) | 13:27 |
| juergh | ogra, yes. but we don't have a kernel snap upgrade story yet due to DTB incompatibilities. | 13:29 |
| ogra | i thought the gadgets can do that now ... (it is indeed an issue with roll-back in case your update fails) | 13:30 |
| juergh | ogra, unfortunately no. there's an ordering issue with gadget and/or kernel snap refreshes you might end up rebooting into a new kernel with old DTBs or the other way around. | 13:31 |
| juergh | we'll have a 5.4 uc18 kernel snap in edge soon. | 13:32 |
| ogra | yeah, i know the issue, but i had hopes the new gadget update machanism could at least handle the forward path nowadays ... too sad :/ | 13:32 |
| juergh | we talked about this yesterday and a plan is being worked on. | 13:32 |
| ogra | (the lockstep mess between kernel and gadget is an old issue ... ) | 13:33 |
| ogra | ah, cool | 13:33 |
| * juergh is surprised we haven't been bitten before | 13:33 | |
| ogra | because we never updated ;) | 13:33 |
| juergh | well. kernel snaps are refreshed and even within the same kernel version the DTBs might break. | 13:34 |
| ogra | it could be fixed by simply adding dtb load support to u-boot ... and not load the dtb from ram | 13:34 |
| ogra | i think that should work nowadays (it didnt when i initially developed the first pi images though, you had to use what the bootloader gave you in ram but i think u-boot evloved) | 13:35 |
| ogra | not sure if that would have any bad effects on GPU stuff though ... | 13:35 |
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