These modules are provided by linux-modules, not linux-modules-extra:
$ dpkg -L linux-modules-5.15.0-1015-raspi | grep -E 'usbserial|ftdi'
/lib/modules/5.15.0-1015-raspi/kernel/drivers/usb/serial/ftdi_sio.ko
/lib/modules/5.15.0-1015-raspi/kernel/drivers/usb/serial/usbserial.ko
** Changed in: linux-raspi (Ubuntu)
Status: New => Invalid
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https://bugs.launchpad.net/bugs/1990595
Title:
Kernel Module usbserial not available on Jammy 22.04 (Raspi 4)
Status in linux-raspi package in Ubuntu:
Invalid
Bug description:
After installing a USB to Serial Adapter on a Raspberry Pi 4 running
Ubuntu Server 22.04 LTS, no tty device is created under /dev/ttyUSB...
dmesg:
[ 3.793123] usb 1-1.2.1: New USB device found, idVendor=0403,
idProduct=6001, bcdDevice= 6.00
[ 3.793142] usb 1-1.2.1: New USB device strings: Mfr=1, Product=2,
SerialNumber=3
[ 3.793149] usb 1-1.2.1: Product: FT232R USB UART
[ 3.793155] usb 1-1.2.1: Manufacturer: FTDI
[ 3.793160] usb 1-1.2.1: SerialNumber: A504D2PO
The usbserial and ftdi_sio kernel modules are not included in the
linux-modules-extra-5.15.0-1015-raspi package.
dpkg-query -L linux-modules-extra-5.15.0-1015-raspi |grep -E
'usbserial|ftdio_sio'
=> NO OUTPUT
lsb_release -rd:
Description: Ubuntu 22.04.1 LTS
Release: 22.04
uname -a:
Linux Host 5.15.0-1014-raspi #16-Ubuntu SMP PREEMPT Thu Aug 25 09:50:55 UTC
2022 aarch64 aarch64 aarch64 GNU/Linux
For Reference:
https://bugs.launchpad.net/ubuntu/+source/linux-raspi/+bug/1947723
Configuration from /boot/config-5.15.0-1014-raspi:
grep USB_SERIAL /boot/config-5.15.0-1014-raspi
CONFIG_USB_SERIAL=m <= set
CONFIG_USB_SERIAL_GENERIC=y <= set
CONFIG_USB_SERIAL_FTDI_SIO=m <= set
Fix:
According to the configuration, the modules should be built. Include the
modules in the package.
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https://bugs.launchpad.net/ubuntu/+source/linux-raspi/+bug/1990595/+subscriptions
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