[Arm-dev] rainbow screen after "yum update" on 5/18/2018
Pablo Sebastián Greco
pablo at fliagreco.com.ar
Sat May 19 20:44:56 UTC 2018
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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