[Arm-dev] Fwd: rainbow screen after "yum update" on 5/18/2018

[Kenneth Freidank]

---------- Forwarded message ----------
From: Kenneth Freidank <kenneth.freidank at gmail.com>
Date: Sat, May 19, 2018 at 8:02 PM
Subject: Re: [Arm-dev] rainbow screen after "yum update" on 5/18/2018
To: Pablo Sebastián Greco <pablo at fliagreco.com.ar>


Thank you for the suggestion.  I burned another sd card, and my PI3 booted,
so it is definitely the sd card with the problem.
After booting, I was able to mount the bad sd card with a USB port adapter.
# mount /dev/sda3 /mnt   <-- the main linux partition
df on /mnt showed 46% full
# mount /dev/sda1 /mnt   <-- the ms-dos boot partition
df on /mnt showed 32% full but I did get an "unmounted properly", may
contains errors, run fsck


On Sat, May 19, 2018 at 4:44 PM, Pablo Sebastián Greco <
pablo at fliagreco.com.ar> wrote:

> Hi Kenneth
>
> El 19/5/18 a las 14:18, Kenneth Freidank escribió:
>
>> I just updated my Centos7 Pi3 "yum update" on 5/18/2018, and now I am
>> facing a rainbow screen.  Red pwr light is nice and strong, even changed
>> power supplies.  Green ACK light blinks 2 times and stays off.  Screen is
>> stuck on the rainbow - no activity, nothing, with or without the USB drive,
>> nothing.  USB drive does not power up either - nothing.  Tried pressing the
>> keys 1 to 4 at power up, then any key on multiple pwr ups, no effect.
>> Found a similar post on https://www.raspberrypi.org/forums, search
>> "raspberry pi3 stuck on rainbow screen after Jessie update".
>>
>> Removed micro card and read files on another machine
>>
>> Without listing all the files individually, kernel7.img, the dtb files
>> bcm2708-rpi-xxx.dtb, bcm2710-rpi-xxx.dtb, bcm2835-rpi-xxx.dtb,
>> bcm2836-rpi-xxx.dtb, gcm2837-rpi-xxx.dtb.  All are dated 5/18/2018, the day
>> of my yum update.
>>
>> The kernel is kernel-4.14.27-v7.1.e7.img dated 3/19/2018.
>>
>> Other files bookcode.bin, fixup*.*, LICENCE.broadcom, start*.elf,
>> COPYING.linux all date 3/16/2018.
>>
>> A file initrd-plymouth.img dates 2/26/2018.
>>
>> I also see what look like older kernel files:  kernel-4.9.75-v7.1.el7.img
>> - 1/9/2018; kernel-4.9.70-v7.1.el7.img - 12/19/2017;
>> kernel-4.9.64-v7.1.el7.img - 11/24/2017; kernel-4.4.26-v7.1.el7.img -
>> 10/22/2016.
>>
> Looking at that amount of older kernels makes me suspect that you run out
> of space in /boot while updating, please check that .
>
>>
>> Any ideas on how to downgrade to previous kernel or how to fix this?
>> Can't get into single user mode - pressing keys on pwr up has no effect.  I
>> don't know enough about the kernel and the boot process to start messing
>> with them.  I am stuck.
>>
>
> Copying some of the older files in /boot should make the older kernel
> work, but please don't do that until we checked for disk space.
> Thanks.
> Pablo
>
>
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