**** BEGIN LOGGING AT Mon Dec 14 03:00:00 2020 Dec 14 17:43:00 btw, does 0xFFFF accept uImage or only uses zImage for kernel? Dec 14 18:45:03 doesn't it detect all images? Dec 14 18:46:10 TBH I have mostly used the nokia one. Dec 14 18:51:16 "0xFFFF can detect more image types from file header. If autodetection not working, see syntax of param -m" Dec 14 18:51:33 https://talk.maemo.org/showthread.php?t=87996 Dec 14 19:33:05 NOLO is not able to boot uImage... it can boot only raw (bootable) images, like zImage... uImage is kernel image with u-boot header... zImage is compressed kernel image with executable ARM code which on-the-fly decompress it Dec 14 19:33:42 0xFFFF automatically detects image types, but uImage is for above reason detected as unknown Dec 14 19:33:56 it is unusable for NOLO Dec 14 19:40:39 Thanks . Dec 14 19:46:31 I've just built linux 5.10 using omap2plus_defconfig and loading with with 0xFFFF -m kernel:zImage -l -b "rootwait root=/dev/mmcblk0p2 ro console=tty0 earlyprintk verbose debug." doesn't seem to be working :( Dec 14 19:47:20 i mean, 0xFFFF is working. but i guess something's wrong with the kernel Dec 14 19:59:19 for early printk support you need to set some explicit configuration for n900 Dec 14 20:00:17 and "-m /path/to/zImage" should be enough, 0xFFFF should detects that zImage file (by its content) is kernel Dec 14 20:05:42 i'll remove the earlyprintk then. i'm also trying to check if i missed something else that's important. Dec 14 20:28:54 https://paste.debian.net/1176918/ Dec 14 20:29:44 that's what i did. it's vanilla 5.10 with no patches at all Dec 14 20:32:28 what happens - i get NOKIA screen with no backlight, then after a while (a little less than 1 minute), device turns off Dec 14 20:32:45 watchdog? Dec 14 20:33:03 have you tried connecting to tv? Dec 14 20:35:31 yes i'm thinking watchdog, although i would expect to see some console before watchdog kicks in. Dec 14 20:36:56 unfortunately no tv here - but i'm quite sure the device turns off, because 0xFFFF is able to boot it again without having to press power button to turn it off myself Dec 14 20:40:02 you can test that by setting r&d flag, no? Dec 14 20:42:16 ah yes. forgot about that (actually i've never used it) Dec 15 01:27:20 afaik the no-backlight thing is normal. I've always had that when booting. Dec 15 01:28:33 If the device is powered off and I turn it on using the power button, one of the earlier bootloaders (presumably NOLO or something) turns the backlight on. Dec 15 01:29:04 Otherwise, if I'm just rebooting, the backlight will be off until something in Linux turns it on. Dec 15 01:31:57 Do you know if fbcon and whatever modules required for the display are built-in to your kernel? I would make sure they're built-in, to get console output before mounting root, starting an init system to load modules, etc **** ENDING LOGGING AT Tue Dec 15 02:59:57 2020