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+# Framework 12 - Debugging
+
+Framework 12 has a couple of features not present on our other systems.
+They might not work on some installations, these instructions here help you find the root cause and how to fix it.
+
+## Touchpad
+
+No special configuration or recent kernel version needed.
+Kernel 6.x with libinput can work.
+
+## Touchscreen
+
+No special configuration or recent kernel version needed.
+Kernel 6.x with libinput can work.
+
+## Tablet Mode
+
+Kernel drivers required:
+
+- `pinctrl_tigerlake` (Must be built into the kernel or load first)
+- [`soc_button_array`](https://github.com/torvalds/linux/blob/master/drivers/input/misc/soc_button_array.c)
+
+### Check that both modules are loaded
+
+```
+> sudo lsmod | grep -e pinctrl_tigerlake -e soc_button_array
+pinctrl_tigerlake    24576 0
+soc_button_array     28672 5
+```
+
+If no, you can load them manually:
+
+```
+> sudo modprobe pinctrl_tigerlake soc_button_array
+```
+
+### Check that the kernel recognized the tabletmode GPIO
+
+```
+> journalctl -k | grep gpio-keys
+Feb 27 19:14:00 fedora kernel: input: gpio-keys as /devices/platform/INT33D3:00/gpio-keys.1.auto/input/input17
+```
+
+If no, then `pinctrl_tigerlake` might have loaded after `soc_button_array`.
+Reload them manually in the right order:
+
+```
+sudo rmmod soc_button_array
+sudo modprobe soc_button_array
+```
+
+To make this permanent you can configure your distribution to load
+`pinctrl_tigerlake` in initrd.
+
+### Check that libinput can see tablet mode changes
+
+```
+ > sudo libinput debug-events | grep SWITCH_TOGGLE
+-event13  SWITCH_TOGGLE           	+0.000s   switch tablet-mode state 1
+ event13  SWITCH_TOGGLE           	+1.360s   switch tablet-mode state 0
+```
+
+We have not seen this fail, if the kernel modules are okay, this should work.
+If not, please contact Framework.
+
+## Screen Rotation
+
+GNOME, KDE, Windows all rotate the screen only if the system is in tablet mode,
+so please check if that's working first.
+
+If you want to rotate in laptop mode, KDE has a setting and GNOME has a plugin to do that.
+
+The kernel driver
+[`cros_ec_sensors`](https://github.com/torvalds/linux/blob/master/drivers/iio/common/cros_ec_sensors/cros_ec_sensors.c)
+reads accelerometer from the EC controller. This is supported on Framework 12
+since Linux 6.12.
+
+iio-sensor-proxy interprets that accelerometer data as a screen orientation and
+forwards it to GNOME/KDE via dbus.
+
+### Check that the EC driver recognizes the system
+
+```
+> sudo dmesg | grep cros_ec
+[	9.014454] cros_ec_lpcs cros_ec_lpcs.0: loaded with quirks 00000001
+[	9.025815] cros_ec_lpcs cros_ec_lpcs.0: Chrome EC device registered
+```
+
+If no, likely your kernel is older than 6.12.
+
+### Check that the kernel exposes accelerometer data
+
+```
+> cat /sys/bus/iio/devices/iio:device0{name,label,in_accel_{x,y,z}_raw}
+cros-ec-accel
+accel-display
+-192
+14400
+6672
+```
+
+If that is not working, please contact Framework.
+
+### Check that the iio-sensor-proxy daemon is runnning
+
+```
+> systemctl status iio-sensor-proxy.service | grep Active
+ 	Active: active (running) since Thu 2025-02-27 19:14:02 CST; 19h ago
+```
+
+If no, make sure the package is installed and the service is enabled and running.
+
+
+### Check that the daemon can be accessed and recognizes the sensor
+
+```
+> monitor-sensor --accel
+	Waiting for iio-sensor-proxy to appear
++++ iio-sensor-proxy appeared
+=== Has accelerometer (orientation: normal)
+	Accelerometer orientation changed: right-up
+	Accelerometer orientation changed: normal
+```
+
+If not, you are likely running iio-sensor-proxy 3.7.
+A fix has been [merged upstream](https://gitlab.freedesktop.org/hadess/iio-sensor-proxy/-/merge_requests/400).
+Until the next release has reached distributions, you can either downgrade to
+3.7 or remove a line in the udev config:
+
+```
+sed 's/.*iio-buffer-accel/#&/' /usr/lib/udev/rules.d/80-iio-sensor-proxy.rules | sudo tee /etc/udev/rules.d/80-iio-sensor-proxy.rules
+sudo udevadm trigger --settle
+sudo systemctl restart iio-sensor-proxy
+```
+
+Please see our distribution specific documentation for further details.