From mboxrd@z Thu Jan 1 00:00:00 1970 From: pavel@ucw.cz (Pavel Machek) Date: Fri, 27 Oct 2017 12:19:05 +0200 Subject: 4.13 (and probably all recent) kernels refuse to boot on one Nokia N950, work or another In-Reply-To: <20171026120130.dicanunwcdmjntnb@earth> References: <20171025203459.GA22035@amd> <20171025212806.GA21504@atomide.com> <20171026091325.GA26929@amd> <20171026093115.4bc6ctxjx72ng7ld@earth> <20171026095734.GA10141@amd> <20171026120130.dicanunwcdmjntnb@earth> Message-ID: <20171027101905.GA4287@amd> To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org Hi! So I got it to work; here are my notes from debugging. I put them on https://elinux.org/N950 , too. If someone knows how to fix the backlight, it would still be useful. Best regards, Pavel Run your kernels with something like: # power off your phone sudo ../maemo/0xffff/src/0xFFFF -l -m kernel:arch/arm/boot/$IMG -b # plug in the phone. Your usually get an error here: Waiting for ASIC ID... Error: Invalid size of ASIC ID Error: Reading ASIC ID failed Error: No device detected ^C Hit ^c, and restart 0xFFFF. You should get Sending image... 100% [#################################################################] Done now. You should get /!\ Warning! screen now. Some bootloader versions way for ~10 seconds, some don't. Some bootloader versions power off immediately if you attempt to supply command line arguments. Watch the screen. It will go dark. If it blinks, it is a good sign. You may want to check with flashlight, maybe there's almost invisible text there. Ignore the notification LED. It seems to blink even without kernel involvement. Keyboard "debug enabled" LED can be used for debugging. -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -------------- next part -------------- A non-text attachment was scrubbed... Name: signature.asc Type: application/pgp-signature Size: 181 bytes Desc: Digital signature URL: