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1500 questions
28
votes
1 answer
Raspberry Pi 2 GDBus.Error on start up
I just got my new Raspberry Pi 2 and installed RASPBIAN using NOOBs.
On start up I get this error. Its in a message box in the middle of the screen. If I hit ok the GUI seems to work find anyway.
GDBus.Error:org.freedesktop.PolicyKit1.Error.Failed:…
Chris
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28
votes
4 answers
What is the difference between Model A and Model B?
There are hardware differences and peripheral differences. What can be accomplished or run on a Model B that cannot be done with a Model A? Are expansion boards being designed to be compatible with both? When available, other than cost, is there…
ramblinjan
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28
votes
4 answers
Raspberry Pi with boots up with Rainbow screen
How can I fix a Raspberry Pi with Rainbow screen on boot up? I have good voltage coming in and I believe I've formatted and setup the SD card properly. I have two of these boards that do the same thing; I bought them months ago but I am only getting…
MEAM
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28
votes
13 answers
Is there a way to set up a Raspberry Pi without a keyboard, mouse, or SD card reader?
To keep myself entertained during the COVID-19 pandemic, I've bought a Raspberry Pi. I thought that it would be possible to program it from my laptop over SSH using an Ethernet connection, but I've just discovered that this requires me to know the…
John Smith
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27
votes
4 answers
What qualities should I look for in a small, 7" or 10" monitor?
Hi,
which small small and portable monitors would you suggest to combine with Raspberry Pi.
As Raspberry Pi is part of huge range of different project please suggest which would be best in each of these categories.
Home PC
Smart home touch screen…
valentt
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27
votes
6 answers
Is there a JDK with a JIT compiler available?
OpenJDK compiles and runs on the Pi successfully, but the only version I've found is one without a JIT. Oracle provides such a JDK for other versions of ARM, but not ARMv6. Is there any way to get such a version of the JDK up and running in the…
berry120
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27
votes
3 answers
Setting up a Raspberry Pi as an access point - the easy way
I know how to do it the classic way as described for example by the official documentation at Wireless connectivity. But that needs many different components which must play together and each component must be configured its own way. These are…
Ingo
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27
votes
2 answers
Which key types the "|" symbol?
With the default Raspberry Pi keyboard layout and a US keyboard, when I press Shift+| the result would be ~
and if I press on ~ or Shift+~ I would get a different symbol.
Suhaib
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27
votes
1 answer
How do I configure the Raspberry Pi to boot with an NFS root?
How can I make my Raspberry Pi use an NFS server for the root filesystem, instead of the SD card?
I'd like to be able to set up my Raspberry Pi to have its root file system on a remote machine via NFS for performance/backup/development purposes. How…
Flexo
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27
votes
5 answers
Can I switch mains devices on/off?
Is it possible to switch mains-powered devices (such as a coffee machine) on and off using the Pi? If so, what extra components do I need?
Tom Medley
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27
votes
16 answers
Transmission: permission denied on USB disk
I have Raspberry Pi running RaspBMC with a WD MyBook connected using USB. The drive is automatically mounted to /media/My Book. I have created a folder /media/My Book/downloads and I have set Trasmission's download directory to be /media/My…
Igor Kulman
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27
votes
2 answers
Why is very little capacity available on my 8GB SD card?
I'm using an 8GB SD card and installed Raspbian which is 3.9GB large.
I suppose that about 4GB should be available, but it isn't.
When I type 'df -ah' on my Raspberry pi, it shows
Only 65MB is available....
And this is diskutil list on my Mac OS…
user3595632
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27
votes
5 answers
Why is my SD card slow?
My SD card seems to be running slow. I have an ADATA 16 GB SDHC Class 10 card. I checked the compatibility list which lists a card with similar specifications, and it states that it is "working". Even simple tasks like getting a directory listing on…
Kibbee
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27
votes
5 answers
Run bash script on startup
I know this question has been asked before, but I can't find a fix for my problem, I just can't get my script to run on startup. Here's my script:
#!/bin/bash
iptables -A INPUT -m state --state NEW -p tcp --dport 22 -j ACCEPT
iptables -A OUTPUT -m…
anon
27
votes
8 answers
How to improve boot time for Raspberry Pi?
I'm creating an embeddable remote application that won't be permanently switched on. I've been playing around with different OS distributions and can reduce the time to boot substantially by using better SD cards with faster
read speeds. I'm not…
Layke
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