Ahammer18
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Rainbow Splash Screen Upon Reboot

Tue Dec 31, 2013 5:23 pm

Let me start off by listing my specs:

Rpi model B
Debian "Wheezy" Raspian (Latest update)
5.1 V = 850mA Motorola Cellphone Charger as Psu
4 GB Lexar Multi-use Sd Card

I have one simple problem. When I boot up Raspian for the first time in awhile, it runs fine. The GUI loads fine and everything is well. The problem starts when I reboot the Pi. Once the Pi shuts off and turns back on, I am greeted by a rainbow splash screen.

I have seen forum posts regarding the rainbow screen, but I haven't seen any that included my problem with rebooting the Pi.

Any help would be greatly appreciated.

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FTrevorGowen
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Re: Rainbow Splash Screen Upon Reboot

Tue Dec 31, 2013 8:40 pm

Ahammer18 wrote:Let me start off by listing my specs:
Rpi model B
Debian "Wheezy" Raspian (Latest update)
5.1 V = 850mA Motorola Cellphone Charger as Psu
4 GB Lexar Multi-use Sd Card
I have one simple problem. When I boot up Raspian for the first time in awhile, it runs fine. The GUI loads fine and everything is well. The problem starts when I reboot the Pi. Once the Pi shuts off and turns back on, I am greeted by a rainbow splash screen.
I have seen forum posts regarding the rainbow screen, but I haven't seen any that included my problem with rebooting the Pi.
Any help would be greatly appreciated.
Your "5.1V 850mA" PSU may be "marginal" (5V 1000mA is recommended for a Model B). The best check of this is to measure the voltage between the test points TP1 & TP2 (marked as susch on the PCB) - it should be at least 4.75V. A secondary issue could be too much resistive "voltage droop" because of a poor quality power cable (same test applies).
(FWIW, there are examples of measured good & bad PSU behaviour here: http://www.cpmspectrepi.webspace.virgin ... dPSUs.html )
Trev.
Still running Raspbian Jessie or Stretch on some older Pi's (an A, B1, 2xB2, B+, P2B, 3xP0, P0W, 2xP3A+, P3B+, P3B, B+, and a A+) but Buster on the P4B's. See: https://www.cpmspectrepi.uk/raspberry_pi/raspiidx.htm

Ahammer18
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Re: Rainbow Splash Screen Upon Reboot

Wed Jan 01, 2014 1:44 am

Thanks for your reply. Do you have a well working PSU that you would reccomend? Also, could it be anything else unrelated to the power supply?

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DougieLawson
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Re: Rainbow Splash Screen Upon Reboot

Wed Jan 01, 2014 2:08 am

Note: Any requirement to use a crystal ball or mind reading will result in me ignoring your question.

Criticising any questions is banned on this forum.

Any DMs sent on Twitter will be answered next month.
All fake doctors are on my foes list.

smeezekitty
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Re: Rainbow Splash Screen Upon Reboot

Wed Jan 01, 2014 2:20 am

How is that a problem?

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DougieLawson
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Re: Rainbow Splash Screen Upon Reboot

Wed Jan 01, 2014 2:24 am

smeezekitty wrote:How is that a problem?
How is that comment not a non-sequitur?

HNY 2014
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Any DMs sent on Twitter will be answered next month.
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Ahammer18
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Re: Rainbow Splash Screen Upon Reboot

Wed Jan 01, 2014 2:39 am

So is running 5 V through the pi a problem?

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DougieLawson
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Re: Rainbow Splash Screen Upon Reboot

Wed Jan 01, 2014 2:35 pm

Ahammer18 wrote:So is running 5 V through the pi a problem?
You're commenting on my forum signature.

Wiring any 5V supply to any GPIO pin other than pin2 will make your RPi die very quickly.
Carve it a nice headstone and give it a good burial.
Note: Any requirement to use a crystal ball or mind reading will result in me ignoring your question.

Criticising any questions is banned on this forum.

Any DMs sent on Twitter will be answered next month.
All fake doctors are on my foes list.

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Richard-TX
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Re: Rainbow Splash Screen Upon Reboot

Wed Jan 01, 2014 2:45 pm

I get a rainbow splash screen whenever I power my Rpi from a USB hub. All of my Rpis work fine.

I have not seen any detrimental effects from it in over a year of nearly daily use.
Richard
Doing Unix since 1985.
The 9-25-2013 image of Wheezy can be found at:
http://downloads.raspberrypi.org/raspbian/images/raspbian-2013-09-27/2013-09-25-wheezy-raspbian.zip

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Re: Rainbow Splash Screen Upon Reboot

Fri Jan 03, 2014 8:49 am

DougieLawson wrote:
smeezekitty wrote:How is that a problem?
How is that comment not a non-sequitur?

HNY 2014
"How is it a problem" actually makes sense. Mine does it too and I assume it is by design.
So unless there is an actually problem other than the splash screen, why worry?

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FTrevorGowen
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Re: Rainbow Splash Screen Upon Reboot

Fri Jan 03, 2014 1:57 pm

smeezekitty wrote:
DougieLawson wrote:
smeezekitty wrote:How is that a problem?
How is that comment not a non-sequitur?
HNY 2014
"How is it a problem" actually makes sense. Mine does it too and I assume it is by design.
So unless there is an actually problem other than the splash screen, why worry?
To some extent I think the O.P. may have been open to mis-interpretation ie. if only the RGB splash screen was being seen it could have been a problem. Said splash screen is related to the very first part of the boot process but, depending upon the monitor/TV and/or installation type (eg. NOOBS cf. raw image) may not be seen because the display in use "activates" too late. (A simpler example w.r.t. my setup is that I have to switch my "shared" monitor between VGA, for my netbook, to DVI, for a Pi, within the time the splash screen is being generated in order to see it. That's not always possible :) )
Trev.
Still running Raspbian Jessie or Stretch on some older Pi's (an A, B1, 2xB2, B+, P2B, 3xP0, P0W, 2xP3A+, P3B+, P3B, B+, and a A+) but Buster on the P4B's. See: https://www.cpmspectrepi.uk/raspberry_pi/raspiidx.htm

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Richard-TX
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Re: Rainbow Splash Screen Upon Reboot

Sat Jan 04, 2014 5:42 am

I had a problem with 2 new Pis that I just bought. Both of the made in the UK and from Allied. They would intermittently hang on the rainbow screen. adding boot_delay=1 to the /boot/config.txt file fixed it. The big question is what did the UK builder change? I have Sony built and China built Rpi's and none of them hang. Just these 2 new ones.
Richard
Doing Unix since 1985.
The 9-25-2013 image of Wheezy can be found at:
http://downloads.raspberrypi.org/raspbian/images/raspbian-2013-09-27/2013-09-25-wheezy-raspbian.zip

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rpdom
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Re: Rainbow Splash Screen Upon Reboot

Sat Jan 04, 2014 7:40 am

The Sony ones are the UK built ones.

It is possible there was a change of memory chip at some point. This can mean the GPU code has to be updated with new timing details.

gsh
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Re: Rainbow Splash Screen Upon Reboot

Sat Jan 04, 2014 7:42 am

Are the two new ones with Micron memory (they have an M on them)

If so then there is another forum page with something you can try...

http://www.raspberrypi.org/forum/viewto ... lit=gordon

Gordon
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Gordon Hollingworth PhD
Raspberry Pi - Director of Software Engineering

Kegluneq
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Re: Rainbow Splash Screen Upon Reboot

Sun Jan 05, 2014 3:41 pm

Richard-TX wrote:I had a problem with 2 new Pis that I just bought. Both of the made in the UK and from Allied. They would intermittently hang on the rainbow screen. adding boot_delay=1 to the /boot/config.txt file fixed it. The big question is what did the UK builder change? I have Sony built and China built Rpi's and none of them hang. Just these 2 new ones.
Just to clarify (I'm not able to check this at the moment), are you literally just adding the line 'boot_delay=1' to the text file? I now have this in my Raspbian image:

Code: Select all

# uncomment if you get no picture on HDMI for a default "safe" mode
#hdmi_safe=1

# uncomment this if your display has a black border of unused pixels visible
# and your display can output without overscan
#disable_overscan=1

# uncomment the following to adjust overscan. Use positive numbers if console
# goes off screen, and negative if there is too much border
#overscan_left=16
#overscan_right=16
#overscan_top=16
#overscan_bottom=16

# uncomment to force a console size. By default it will be display's size minus
# overscan.
#framebuffer_width=1280
#framebuffer_height=720

# uncomment if hdmi display is not detected and composite is being output
#hdmi_force_hotplug=1

# uncomment to force a specific HDMI mode (this will force VGA)
#hdmi_group=1
#hdmi_mode=1

# uncomment to force a HDMI mode rather than DVI. This can make audio work in
# DMT (computer monitor) modes
#hdmi_drive=2

# uncomment to increase signal to HDMI, if you have interference, blanking, or
# no display
#config_hdmi_boost=4

# uncomment for composite PAL
#sdtv_mode=2

#uncomment to overclock the arm. 700 MHz is the default.
#arm_freq=800

# for more options see http://elinux.org/RPi_config.txt

boot_delay=1
...but as I'm a complete noob I'm not totally sure that's what people are referring to.

raspberrypiguy2000
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Re: Rainbow Splash Screen Upon Reboot

Sun Jan 05, 2014 3:53 pm

it is supost to be there

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DougieLawson
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Re: Rainbow Splash Screen Upon Reboot

Sun Jan 05, 2014 3:55 pm

That's what you need to delay boot until the SDCard is ready.
Note: Any requirement to use a crystal ball or mind reading will result in me ignoring your question.

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rpdom
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Re: Rainbow Splash Screen Upon Reboot

Sun Jan 05, 2014 3:57 pm

Yes, that is exactly what we are referring to.

Kegluneq
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Re: Rainbow Splash Screen Upon Reboot

Sun Jan 05, 2014 4:24 pm

Thanks guys, I'm into Raspbian now at last!

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