Error writing to /sys/class/gpio/export, GPIO failure

[craigerl]

Updates to Raspberry Pi OS bookworm (Debian 12) are disabling sysfs access to gpio,

After an apt-get upgrade, direwolf will not run if using gpio,

Dire Wolf version 1.7 KM6LYW-4 Includes optional support for: gpsd hamlib cm108-ptt dns-sd Reading config file /run/direwolf.tnc.conf Audio device for both receive and transmit: plughw:0,0 (channel 0) Channel 0: 1200 baud, AFSK 1200 & 2200 Hz, A+, 44100 sample rate / 3. Error writing "16" to /sys/class/gpio/export, errno=22 Invalid argument

Some discussion and a temporary solution (freeze kernel version) is here

https://forums.raspberrypi.com/viewtopic.php?t=359540