Hello all,

for Debian stable, I'm trying to update (having done an apt
dist-upgrade) and get the following error:

--8<---------------cut here---------------start------------->8---
Setting up linux-image-6.12.74+deb13+1-amd64 (6.12.74-2) ... /etc/kernel/postinst.d/dkms:
Sign command: /lib/modules/6.12.74+deb13+1-amd64/build/scripts/sign-file Signing key: /var/lib/dkms/mok.key
Public certificate (MOK): /var/lib/dkms/mok.pub

Autoinstall of module rtl88x2bu/5.13.1 for kernel 6.12.74+deb13+1-amd64 (x86_64)
Building module(s).....(bad exit status: 2)
Failed command:
./dkms-make.sh

Error! Bad return status for module build on kernel: 6.12.74+deb13+1-amd64 (x86_64)
Consult /var/lib/dkms/rtl88x2bu/5.13.1/build/make.log for more information.

Autoinstall on 6.12.74+deb13+1-amd64 failed for module(s) rtl88x2bu(10). --8<---------------cut here---------------end--------------->8---

Any suggestions on how to fix this? Everything else is fine.

Thank you,
eric

--
Eric S Fraga via gnus (Emacs 31.0.50 2026-04-30) on Debian 13.4

--- PyGate Linux v1.5.14
* Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)

On 2026-04-30 at 09:23, Eric S Fraga wrote:

Hello all,

for Debian stable, I'm trying to update (having done an apt
dist-upgrade) and get the following error:

--8<---------------cut here---------------start------------->8---
Setting up linux-image-6.12.74+deb13+1-amd64 (6.12.74-2) ... /etc/kernel/postinst.d/dkms:
Sign command: /lib/modules/6.12.74+deb13+1-amd64/build/scripts/sign-file Signing key: /var/lib/dkms/mok.key
Public certificate (MOK): /var/lib/dkms/mok.pub

Autoinstall of module rtl88x2bu/5.13.1 for kernel 6.12.74+deb13+1-amd64 (x86_64)
Building module(s).....(bad exit status: 2)
Failed command:
./dkms-make.sh

Error! Bad return status for module build on kernel: 6.12.74+deb13+1-amd64 (x86_64)
Consult /var/lib/dkms/rtl88x2bu/5.13.1/build/make.log for more information.

Autoinstall on 6.12.74+deb13+1-amd64 failed for module(s) rtl88x2bu(10). --8<---------------cut here---------------end--------------->8---

Any suggestions on how to fix this? Everything else is fine.

Where does that module come from?
I don't find any reference to the string 'rtl88x2bu' in my currently configured/available source repositories (current Debian testing and
stable), so my reflex is to suspect that this is a third-party module
you've gotten from somewhere outside Debian.
If that's correct, most likely that module is not compatible with some
change that's included in the kernel (or build chain) in question, and
you'll need to either update it from where you got it, or remove it.
If you want to troubleshoot beyond that, I'd suggest starting by looking
at the log file indicated in the error message; there's not a lot we can
do to figure out the cause of the build failure without access to that log.
--
The Wanderer
The reasonable man adapts himself to the world; the unreasonable one
persists in trying to adapt the world to himself. Therefore all
progress depends on the unreasonable man. -- George Bernard Shaw


--- PyGate Linux v1.5.14
* Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)

On Thu, Apr 30, 2026 at 9:24?AM Eric S Fraga <e.fraga@ucl.ac.uk> wrote:

Hello all,

for Debian stable, I'm trying to update (having done an apt
dist-upgrade) and get the following error:

You should not need to do a dist-upgrade unless you are upgrading from
Debian 12 to 13.

--8<---------------cut here---------------start------------->8---
Setting up linux-image-6.12.74+deb13+1-amd64 (6.12.74-2) ... /etc/kernel/postinst.d/dkms:
Sign command: /lib/modules/6.12.74+deb13+1-amd64/build/scripts/sign-file Signing key: /var/lib/dkms/mok.key
Public certificate (MOK): /var/lib/dkms/mok.pub

Autoinstall of module rtl88x2bu/5.13.1 for kernel 6.12.74+deb13+1-amd64 (x86_64)
Building module(s).....(bad exit status: 2)
Failed command:
./dkms-make.sh

You should check to make sure you have kernel headers, dkms and make
installed. I get a similar error when I am missing kernel headers.

Error! Bad return status for module build on kernel: 6.12.74+deb13+1-amd64 (x86_64)
Consult /var/lib/dkms/rtl88x2bu/5.13.1/build/make.log for more information.

Autoinstall on 6.12.74+deb13+1-amd64 failed for module(s) rtl88x2bu(10). --8<---------------cut here---------------end--------------->8---

Any suggestions on how to fix this? Everything else is fine.

Thank you,
eric

--
Eric S Fraga via gnus (Emacs 31.0.50 2026-04-30) on Debian 13.4

--
???????
??????? Debian - The universal operating system
??????? https://www.debian.org/
?????


--- PyGate Linux v1.5.14
* Origin: Dragon's Lair, PyGate NNTP<>Fido Gate (3:633/10)