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I'm unsuccessfully trying to install a Fritz!WLAN USB Stick on a Raspberry Pi 2 running Raspbian Stretch. Unfortunately, I have little experience with Linux. So far, entering

lsusb

is giving me

Bus 001 Device 007: ID 05c:6201 AVM GmbH AVM Fritz!WLAN 1.1 [Texas Instruments TNETW1450]

from which I guess that the USB stick itself is recognized and TNETW1450 is the name of the chipset. However, the instruction from here apparently doesn't work; the step

dkms build -m acx-mac80221 -v git

is giving me the following error message.

Error! echo
Your kernel headers for kernel 4.9.41-v7+ cannot be found at
/lib/modules/4.9.41-v7+/build or /lib/modules/4.9.41-v7+/source.

Additionally, searching

apt-cache search tnetw1450

is giving me no results. Does anyone know what to do? Is it possible to use the USB stick with Raspbian Stretch in the first place?

If it is relevant - connecting to a local network using the cable ethernet adapter works just fine.

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If you read the error message, Your kernel headers for kernel 4.9.41-v7+ cannot be found

When you compile a kernel module you need the kernel header.

sudo apt-get install linux-headers-$(uname -r)

And then compile again.

  • Thanks for your reply, but I'm getting the error message E: Unable to locate package-linux-headers-4.9.41-v7; what does this mean? – Codor Oct 28 '17 at 18:48
  • The headers is missing and they are needed for compiling the fritzing module. – MatsK Oct 29 '17 at 2:40
  • The missing kernel headers were indeed missing; however, they can be installed with sudo apt-get install raspberrypi-kernel-headers. Sadly, installing the kernel headers didn't solve the actual problem since the driver didn't compile. – Codor Oct 31 '17 at 9:34

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