Serial Wacom problem after update

I still use an old Siemens Fuijtsu Lifebook T4220. After an update to f36 the touchscreen does not work any more (I used f30 before and the touchscreen worked).

As far as I understand, the wacom tablet is not connected via usb in this case but with an internal serial connection. The relevant modules are installed

xorg-x11-drv-wacom-serial-support-1.0.0-1.fc36.x86_64
xorg-x11-drv-wacom-1.0.0-1.fc36.x86_64
libwacom-data-2.2.0-1.fc36.noarch
libwacom-2.2.0-1.fc36.x86_64

but Xorg.9.log shows the following errors:

[ 48.085] (II) Using input driver ‘wacom’ for ‘Serial Wacom Tablet FUJ02e5’
[ 48.085] () Serial Wacom Tablet FUJ02e5: always reports core events
[ 48.085] (
) Option “Device” “/dev/ttyS4”
[ 48.180] () Option “StopBits” “1”
[ 48.180] (
) Option “DataBits” “8”
[ 48.180] () Option “Parity” “None”
[ 48.180] (
) Option “Vmin” “1”
[ 48.180] () Option “Vtime” “10”
[ 48.181] (
) Option “FlowControl” “Xoff”
[ 48.181] (EE) wacom: Serial Wacom Tablet FUJ02e5: usbDetect: can not ioctl version
[ 48.181] (EE) wacom: Serial Wacom Tablet FUJ02e5: cannot identify device class.
[ 48.181] (EE) PreInit returned 8 for “Serial Wacom Tablet FUJ02e5”
[ 48.181] (II) UnloadModule: “wacom”

Apparently the Wacom Tablet FUJ02e5 is recognized but usbDetect seems to indicate that USB is being tried instead of the serial connection.

Any ideas? Thanks in advance, Michael