Bug#1055292: Debian bookworm with the latest backports kernel (6.5.3-1~bpo12+1) not shutting down

Package: src:linux
Version: 6.5.3-1~bpo12+1
Severity: normal
X-Debbugs-Cc: [email protected]

After upgrading the latest kernel from backports the system does not shutdown completely:
after starting shutdown (gui or terminal) the screen turns off but the power led (and other 
keyboard leds) stay on, and can be shutdown only pressing the power button for a few seconds in 
order to turn it off completely.

With the previous version (6.4.4-3~bpo12+1), and even with all those before it, including the 
stable versions, no problems of this kind were detected.
The journal log reports no errors.

Looking for similar errors I found many reports by searching "kernel 6.5 poweroff hang", and a 
possible kernel related bug:
https://bugzilla.kernel.org/show_bug.cgi?id=217995
from this report it seems that version 6.5.8 fixes the problem but I am not able to verify it 
myself.

Regards,
Enrico


-- Model information
sys_vendor: Dell Inc.
product_name: Dell System XPS L502X
chassis_vendor: Dell Inc.
chassis_version: 0.1
bios_vendor: Dell Inc.
bios_version: A12
board_vendor: Dell Inc.
board_name: 0NJT03
board_version: A00


-- System Information:
Debian Release: 12.2
   APT prefers stable-updates
   APT policy: (500, 'stable-updates'), (500, 'stable-security'), (500, 'stable')
Architecture: amd64 (x86_64)
Foreign Architectures: i386

Kernel: Linux 6.4.0-0.deb12.2-amd64 (SMP w/8 CPU threads; PREEMPT)
Kernel taint flags: TAINT_USER, TAINT_OOT_MODULE, TAINT_UNSIGNED_MODULE
Locale: LANG=it_IT.utf8, LC_CTYPE=it_IT.utf8 (charmap=UTF-8), LANGUAGE not set
Shell: /bin/sh linked to /usr/bin/dash
Init: systemd (via /run/systemd/system)
LSM: AppArmor: enabled

Versions of packages linux-image-6.5.0-0.deb12.1-amd64 depends on:
ii  initramfs-tools [linux-initramfs-tool]  0.142
ii  kmod                                    30+20221128-1
ii  linux-base                              4.9

Versions of packages linux-image-6.5.0-0.deb12.1-amd64 recommends:
ii  apparmor             3.0.8-3
ii  firmware-linux-free  20200122-1

Versions of packages linux-image-6.5.0-0.deb12.1-amd64 suggests:
ii  debian-kernel-handbook  1.0.21I am aware that
ii  grub-pc                 2.06-13+deb12u1
ii  linux-doc-6.5           6.5.3-1~bpo12+1

Versions of packages linux-image-6.5.0-0.deb12.1-amd64 is related to:
ii  firmware-amd-graphics     20230210-5
pn  firmware-atheros          <none>
pn  firmware-bnx2             <none>
pn  firmware-bnx2x            <none>
pn  firmware-brcm80211        <none>
pn  firmware-cavium           <none>
ii  firmware-intel-sound      20230210-5
pn  firmware-intelwimax       <none>
pn  firmware-ipw2x00          <none>
pn  firmware-ivtv             <none>
ii  firmware-iwlwifi          20230210-5
pn  firmware-libertas         <none>
ii  firmware-linux-nonfree    20230210-5
ii  firmware-misc-nonfree     20230210-5
pn  firmware-myricom          <none>
pn  firmware-netxen           <none>
pn  firmware-qlogic           <none>
ii  firmware-realtek          20230210-5
pn  firmware-samsung          <none>
pn  firmware-siano            <none>
pn  firmware-ti-connectivity  <none>
pn  xen-hypervisor            <none>