[Bug 2134844] Re: sl-modem-dkms FTBS in Noble with the linux-6.17 kernel

[أحمد المحمودي (Ahmed El-Mahmoudy)]

On Thu, Dec 11, 2025 at 06:21:54PM -0000, John Cabaj wrote:
> 2.9.11~20110321-19ubuntu0.1 -> 2.9.11~20110321-19ubuntu0.2 debdiff
---end quoted text---

Why doesn't Ubuntu  just sync sl-modem from Debian ?!

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‎أحمد المحمودي (Ahmed El-Mahmoudy)
 Digital design engineer
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https://bugs.launchpad.net/bugs/2134844

Title:
  sl-modem-dkms FTBS in Noble with the linux-6.17 kernel

Status in sl-modem package in Ubuntu:
  New
Status in sl-modem source package in Noble:
  New
Status in sl-modem source package in Questing:
  New

Bug description:
  [ Impact ]

  DKMS make.log for sl-modem-2.9.11~20110321 for kernel 6.17.0-7-generic (x86_64)
  Thu Dec 11 16:05:37 UTC 2025
  make: Entering directory '/var/lib/dkms/sl-modem/2.9.11~20110321/build/drivers'
   obj-m= slusb.o
   slamr-objs=amrmo_init.o sysdep_amr.o amrlibs.o
  make modules -C /lib/modules/6.17.0-7-generic/build M=/var/lib/dkms/sl-modem/2.9.11~20110321/build/drivers
  make[1]: Entering directory '/usr/src/linux-headers-6.17.0-7-generic'
  make[2]: Entering directory '/var/lib/dkms/sl-modem/2.9.11~20110321/build/drivers'
  warning: the compiler differs from the one used to build the kernel
    The kernel was built by: x86_64-linux-gnu-gcc-13 (Ubuntu 13.3.0-6ubuntu2~24.04) 13.3.0
    You are using:           gcc-13 (Ubuntu 13.3.0-6ubuntu2~24.04) 13.3.0
    CC [M]  st7554.o
  st7554.c:59:10: fatal error: modem_defs.h: No such file or directory
     59 | #include <modem_defs.h>
        |          ^~~~~~~~~~~~~~
  compilation terminated.
  make[4]: *** [/usr/src/linux-headers-6.17.0-7-generic/scripts/Makefile.build:287: st7554.o] Error 1
  make[3]: *** [/usr/src/linux-headers-6.17.0-7-generic/Makefile:2016: .] Error 2
  make[2]: *** [/usr/src/linux-headers-6.17.0-7-generic/Makefile:248: __sub-make] Error 2
  make[2]: Leaving directory '/var/lib/dkms/sl-modem/2.9.11~20110321/build/drivers'
  make[1]: *** [Makefile:248: __sub-make] Error 2
  make[1]: Leaving directory '/usr/src/linux-headers-6.17.0-7-generic'
  make: *** [Makefile:138: all] Error 2
  make: Leaving directory '/var/lib/dkms/sl-modem/2.9.11~20110321/build/drivers'

  [ Test case ]

  Install the latest linux-6.17 kernel on Noble:

  $ sudo add-apt-repository ppa:canonical-kernel-team/ppa3
  $ sudo apt install linux-generic-hwe-24.04-edge

  Install sl-modem-dkms:

  $ sudo apt install sl-modem-dkms

  Load the modules:

  $ sudo modprobe slusb
  $ sudo modprobe ungrab-winmodem

  The same procedure should be repeated on linux-6.8 to test for
  possible regressions.

  Install Questing kernel and repeat steps from above

  [ Fix ]

  Patches from sl-modem-dkms in Debian:

  -debian/patches/fix-linux-6.15-ftbfs.patch

  [ Regression potential ]

  We may experience regressions in systems that are using the sl-modem
  drivers, especially with kernels >= 6.8 kernel.

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