50
votes
Accepted
How can I use an external USB sound-card and set it as default?
Background
It's amazing to see how much effort has been put in to trying to resolve
various sound related problems for the Raspberry Pi. Apparently it must be
the weakest spot for new users to ...
- 1,377
48
votes
Accepted
Setting up a Raspberry Pi as an access point - the easy way
━━━ Setting up an access point ━━━
We are talking about an access point together with an ethernet port eth0.
If you want an access point together with a wlan0 client connection to another wifi network ...
- 41.9k
35
votes
Accepted
Workaround for a wifi bridge on a Raspberry Pi with proxy arp
Proxy arp is a way to build a pseudo bridge that is working on OSI layer 3 but it behaves like a real layer 2 bridge. So it is a good way to workaround the lack of WDS support on Raspberry Pi.
There ...
- 41.9k
33
votes
Accepted
Why does the SHA256 of Raspbian file image never correspond to the one indicated on the website?
The SHA-256 checksum on the downloads page is for the ZIP file, not the IMG file.
- 3,506
26
votes
Accepted
How to identify a Pi
On at least a Pi 3, you can turn the green (SD card activity) LED to be on constantly with the following command (as root):
echo 1 > /sys/class/leds/led0/brightness
Now that Pi will have the ...
- 1,476
25
votes
Accepted
pi1, armv6, how to disable armhf packages?
Both Raspbian and Debian pride themselves in suppporting the "armhf" architecture. Of course, they mean two different things !
Raspbian "armhf": ARMv6 + VFPv2
Debian "armhf": ARMv7
Your scenario is ...
- 6,215
24
votes
Accepted
ifup and ifdown do not work on raspbian stretch lite 2017-09-07-raspbian-stretch-lite.img
What does work instead of
sudo ifup wlan0
sudo ifdown wlan0
is
sudo ifconfig wlan0 up
sudo ifconfig wlan0 down
- 561
23
votes
Accepted
How to permanently disable swap on Raspbian Stretch Lite
To avoid an error on startup regarding dphys service, try to disable swap on this way:
sudo dphys-swapfile swapoff
sudo dphys-swapfile uninstall
sudo update-rc.d dphys-swapfile remove
sudo apt purge ...
- 356
20
votes
Accepted
How can I use an init ramdisk (initramfs) on boot up Raspberry Pi?
I have found that there is a setup in
rpi ~$ cat /etc/default/raspberrypi-kernel
# Defaults for raspberrypi-kernel
# Uncomment the following line to enable generation of
# /boot/initrd.img-KVER ...
- 41.9k
17
votes
Accepted
Enabling SSH by default on Raspbian Stretch
The easiest way to do this for a headless setup is to create a file named ssh on the boot partition of the SD card. This will enable the SSH daemon immediately after first boot and will be deleted.
...
- 895
17
votes
Enabling SSH by default on Raspbian Stretch
Have you created a file in the /Boot directory called "ssh" with no extension?
or setting from
sudo raspi-config
then -> interfacing options -> enable ssh
EDIT
- 1,008
16
votes
Accepted
How to INVERT SCROLLING DIRECTION on trackpad in Raspbian Stretch?
I've figured it out!
The scrolling direction is determined by libinput - see here.
Navigate to the 40-libinput.conf file in /usr/share/X11/xorg.conf.d and change the first section as follows:
# ...
- 391
15
votes
Accepted
Access point as WiFi router/repeater with additional WiFi-dongle
It is known that the Raspberry Pi can spawn an access point and connect as client to another wifi network simultaneously with its on board wifi chip. How to do that you can look at Access point as ...
- 41.9k
15
votes
Accepted
Why is hostapd masked after installation?
Just from the installation with sudo apt install hostapd there is nothing configured for the service. hostapd has no default setup so it doesn't make sense to start the service without it. To avoid ...
- 41.9k
14
votes
Accepted
What is the latest sources.list for Raspbian?
It seems my problem has been a temporary one.
Some weeks after posting my original question, the settings just started working. I did not actually do anything. I guess "stretch" was not really ready ...
14
votes
How to identify a Pi
Shut one of them down. There should be recognizable behavior from the green light, which will eventually go out.
Then put a label on that pi with its ipname.
Then you can start that one up again.
...
- 1,560
12
votes
Configuring `unattended-upgrades` on Raspbian Stretch
The most important lines are:
"origin=Raspbian,codename=${distro_codename},label=Raspbian";
"origin=Raspberry Pi Foundation,codename=${distro_codename},label=Raspberry Pi Foundation";
Here is the ...
- 221
12
votes
How to permanently disable swap on Raspbian Stretch Lite
I used to use sudo update-rc.d dphys-swapfile remove
I haven't tried recently so I'll assume that no longer works as you have tried using it.
Perhaps try CONF_SWAPSIZE=0 in /etc/dphys-swapfile
- 70.5k
12
votes
Accepted
How to setup an unprotected Ad Hoc (IBSS) Network and if possible with WPA encryption?
There are mainly three setups to have a peer to peer network:
unprotected ad-hoc interface by configuring the WiFi device
unprotected ad-hoc interface using wpa_supplicant (Recommended)
Only with ...
- 41.9k
11
votes
Raspberry Pi Custom SSH/Normal Login Message
This is, as mentioned, the contents of the /etc/motd file. The actual file shown (/run/motd.dynamic) is constructed using the scripts in /etc/update-motd.d and the file /etc/motd.
So for static ...
- 501
10
votes
Accepted
Automatically Create Hotspot if no Network is Available
The following can also easily be installed from a github repository that I created here .
First we need to change over completely to systemd (which might be the future anyway), as Ingo has explained ...
- 1,339
9
votes
How do I restart sshd on raspbian?
Same issue with both stretch and jessie. Until you enable the service with:
systemctl enable ssh
you cannot refer to the service as "sshd". Once the service is enabled, no problem, you can even ...
8
votes
What have you done to make generic TFT touchscreen display work?
I've bought the same display. Here are my successful attempts to make it work on a RaspberryPi 3 B+ running Raspbian Stretch.
1. First attempt, involving specific device tree specification and ...
- 181
8
votes
Switching to a different wireless network when it is available
If you simply call wpa_cli without specifying the Interface, by default your raspbian stretch uses the interface 'p2p-dev-wlan0', as I can see in the output you posted.
Try the manual switching with ...
- 924
8
votes
Problem on installing Pyaudio on Raspberry Pi
If your system is not "broken", you may be successful with this sequence:
1. sudo apt-get update
2. sudo apt-get upgrade
3. sudo apt-get install portaudio19-dev
4. sudo pip install pyaudio
In ...
- 21.1k
8
votes
Accepted
cron not executing python3
As is typical with crontab issues. The environment is not the same as your user or even a sudo/root shell , and env python3 may not return anything (env simply searches through
Instead you should ...
- 2,983
8
votes
How to install Raspbian Stretch on Raspberry Pi 4?
You cannot install Raspbian Stretch on a Raspberry Pi 4B. The RPi 4B does not support it as you can read in the release notes in section from 2019-06-20. A RPi 4B is only supported by Raspbian Buster.
- 41.9k
7
votes
Upgrade to Raspbian Jessie
Just an addition for users that could land here looking for the upgrade procedure, like me!
On the official Raspberry Pi website the update from Wheezy to Jessie is discouraged. Instead they ...
- 203
7
votes
Raspberry Pi Crashes when I try to change screen resolution
I know this is an older question now, but I was having this exact same issue with my Raspberry Pi 3 B+.
I found out that the issue for me was caused by having GL Driver set to "Full KMS".
Once I set ...
- 71
7
votes
Setting up a Raspberry Pi as an access point - the easy way
An even EASIER way of setting up a Raspberry Pi as an AP is to use the pi-ap Github repo which automates configuration of a Pi 3B+/4 into an AP.
Connect the Pi to a free port in your Internet-...
- 1,647
Only top scored, non community-wiki answers of a minimum length are eligible