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13 votes

How do I install the drivers for a WiFi dongle with the RealTek 8812AU chipset on Raspbian?

"In normal circumstances there is NEVER a need to run rpi-update as it always gets you to the leading edge firmware and kernel and because that may be a testing version it could leave your RPi ...
yapws87's user avatar
  • 319
10 votes
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How do I use Yocto to build an sdcard image for my Raspberry Pi 3 Model B?

For an SD Card image file (similar to the .sdimg ones) to be generated your local.conf file must include the rpi-sdimg filesystem type in the IMAGE_FSTYPE variable. This will typicaly give you a ...
TafT's user avatar
  • 281
10 votes
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How do I install the drivers for a WiFi dongle with the RealTek 8812AU chipset on Raspbian?

After hours of reading threads and following guides here and there, the definitive guide that got the driver working was here. Following the steps listed in that post: $ # install necessary software $...
Zimano's user avatar
  • 469
10 votes
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Issues installing RTL8812BU WIFI driver on Raspberry Pi 4 B

Finally I had a breakthrough! Instead of using modprobe and dkms, it was enough to follow these steps: sudo git clone https://github.com/EntropicEffect/rtl8822bu.git cd rtl8822bu sudo nano Makefile ...
Stefan R.'s user avatar
  • 191
7 votes

Level of Hackability of raspberry pi

To update Krzysztof's great answer, Broadcom finally publicly released some code, licensed as 3-Clause BSD, to aid the making of an open source GPU driver. The "rpi-open-firmware" effort to replace ...
nealmcb's user avatar
  • 171
5 votes

Raspberry Pi Recognizes Logitech C920 Webcam But Can't Do Anything

I spent a number of hours recently with my C920 and a Raspberry Pi 3 recently to make a babyCam that I could stream within my home network. I may be able to shed some light but also provide ...
Jim Russell's user avatar
5 votes

Enable i2c on Ubuntu Mate Raspberry Pi 3

Add the following line to /boot/config.txt dtparam=i2c_arm=on Add the following line to /etc/modules i2c-dev Reboot
joan's user avatar
  • 71.2k
5 votes
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What sort of throughput is achievabe over the USB 3.0 port on the Pi-4?

I have a Pi 4 Model B/4GB serving a small office as a router/firewall/gateway with dnsmasq (DHCP+DNS), dnscrypt-proxy, chrony (NTP), and a few other odds and ends. It's fairly busy: up to 20 users at ...
mwp's user avatar
  • 166
5 votes
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Raspberry Pi 4 doesn't show a wireless interface - what drivers are required?

On a Raspberry Pi 4 only Raspbian Buster is running out of the box. On a Buster installation you will find the firmware with: rpi ~$ apt list *raspberrypi* Listing... Done libraspberrypi-bin/testing,...
Ingo's user avatar
  • 42.2k
4 votes

Editing Quirks for a USB driver

A real world example that I use cat /sys/module/usb_storage/parameters/quirks 0bc2:3312:u,0bc2:ab38:u Note that the format is vendor:device:flag[,...] and that , not \n must be used for multiple ...
user1133275's user avatar
  • 2,216
4 votes
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Connect IRF520 MOSFET Driver to a Raspberry Pi 2

That's not really what I would call a motor driver board. For low current operation I'd be looking at L298N, or L293D, or L9110S based boards. They let you drive a pair of motors forwards and ...
joan's user avatar
  • 71.2k
4 votes
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Missing build file when building for rtl8812au driver

To build this module from source, I did the following on my RPI2. Install build tools: # apt install build-essential bc git wget Get kernel source code # cd /usr/src # git clone --depth 1 https://...
Mayli's user avatar
  • 156
4 votes
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Installed kernel headers and $(uname -r) differ

You can restore your system to standard with sudo apt-get update && sudo apt-get install --reinstall raspberrypi-bootloader raspberrypi-kernel sudo apt-get install raspberrypi-kernel-headers ...
Milliways's user avatar
  • 60.4k
4 votes
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Execute script on boot (with boot folder)

If you have a virgin Raspbian image that was never booted before you will find a script that is executed on first boot up. Look at a fresh flashed CD Card with mounted boot partition for example at /...
Ingo's user avatar
  • 42.2k
4 votes

What sort of throughput is achievabe over the USB 3.0 port on the Pi-4?

The other user didn't really answer the question asked, about what usb to ethernet adapters work with the Raspberry Pi 4. Here are some forum links I found that may help. I don't have a RPi 4 myself (...
makeworld's user avatar
  • 141
4 votes

How I can identify and set a needed display module which was missing on boot time?

There's three ways modules get loaded With a device tree (for something like a RTC module) When the kernel detects a new USB device being connected. A list of modules to can be specified in: /etc/...
Dougie's user avatar
  • 5,321
3 votes
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Editing the settings that are available through raspi-config without using raspi-config

The setting that changes inside the config.txt is dtoverlay. Whenever the GL driver is enabled it is set to dtoverlay=vc4-kms-v3d else commented out. I had difficulties even finding the config.txt ...
rbaleksandar's user avatar
3 votes

which driver can control 4-5 motors, different types of sensors, speakers?

The most capable motor controller board that gets closest to what you require is called the 4tronix Picon Zero. As you can see from the picture, it allows you to drive 2 DC motors (bottom right) and ...
recantha's user avatar
  • 4,479
3 votes
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Touchscreen LCD USB (HannsG and elo) behaving unexpected on raspi 3

I had the same problem with Jessie & a Pi3. A firmware update of the monitor solved my problem. For the update you need a windows pc. After the update the touch (single click) works fine. At the ...
Lennart's user avatar
  • 76
3 votes

omnikey 5421 contactless driver for Raspberry pi

Buy A Compatible Card Reader You're probably going to have to buy a card reader that is compatible with the Raspberry Pi. Elaborating on Dmitry's Comment Basically, drivers need to be compatible ...
Hydraxan14's user avatar
  • 1,846
3 votes
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Trouble installing the CH340 driver on Raspbian Wheezy

"Of course, for this to be able to work on the Raspberry Pi, I'd need to install the required driver for it" have you tried it? My Pi has drivers for CH340, as do most Linux distributions, although I ...
Milliways's user avatar
  • 60.4k
3 votes
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how to set precision of DS18B20 via w1-therm?

The permissions problem is because the redirection (>) is done before sudo takes effect. Try the following invocation. sudo sh -c "echo 12 >/sys/bus/w1/devices/28-0315549b98ff/w1_slave" This ...
joan's user avatar
  • 71.2k
3 votes
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I2S DAC device support (kernel drivers?) and noise ("pop", "crackle") on playback

2020-06 update/summary The MAX98357 does not handle the RPi's I2S output well which causes pops/cracks root cause is a short high-level interruption of BCLK before LRCLK starts (oscillograms: actual,...
handle's user avatar
  • 153
3 votes
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Updating Pi 3 B's WiFi driver for security improvements

My glance at this: https://www.krackattacks.com/ and this: https://en.wikipedia.org/wiki/KRACK points to a few preliminary conclusions. Although initially pretty much everyone with a consumer device (...
goldilocks's user avatar
  • 59.2k
3 votes

Edimax EW-7811un driver: wext or nl80211?

You are confusing two types of driver. The driver for the firmware (rtl8192cu) of the wifi device has nothing to do with the driver backend of wpa_supplicant (nl80211). Let's explain in detail. ...
Ingo's user avatar
  • 42.2k
3 votes

LIRC won't setup the device

So apparently the only problem is that the lirc drivers are outdated and not present in newer versions of raspbian. Just change that to the new gpio-ir-tx driver and all will work fine. Also note the ...
Lorenzo's user avatar
  • 170
3 votes

Help Patching a driver

For such a small patch I wouldn't bother using a tool to apply it. Just add the lines starting with the + sign to option.c, not including the + sign itself. The first insertion will be at line 249, ...
Dmitry Grigoryev's user avatar
3 votes
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How do I know that a Dual-Band USB WiFi dongle will work on Raspbian or other Linux distrobution?

You can find a detailed list of supported RPi USB Wi-Fi Adapters. If you have the USB/WiFi dongle available you can look at its valid interface combinations with iw list. For example on a RPi 4B you ...
Ingo's user avatar
  • 42.2k
3 votes
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Raspberry Pi 4 hung on boot while powered USB hub is plugged in

After hours of troubleshooting, getting a different hub from Amazon without an ethernet port. Upgrading the kernel, reflashing, trying a different power supply, etc. I believe that my Pi could have ...
FailedShack's user avatar
3 votes

How can I write or read from a specific GPIO pin in from a kernel-module?

I think you have misinterpreted what you are seeing. On the Pi /dev/gpiochip0 is the main GPIO block of 54 GPIO and corresponds to Broadcom GPIO 0 to 53. This includes all the GPIO you can access ...
joan's user avatar
  • 71.2k

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