Bug#1057698: bugs.debian.org: The proposed kernel for Debian 12.3 breaks wlan

[djw6g...@temp.mailbox.org]

Package: bugs.debian.org

There' s a bug in linux-image-amd64 version 6.1.64-1 for bookworm (in
proposed updates).
The updates breaks wlan on a Lenovo T490s. Current versions used to work
fine.

-------------------------------------------------------------------------------------------------
log:

uname -a;dmesg | grep iwlw
Linux t490 6.1.0-14-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.64-1
(2023-11-30) x86_64 GNU/Linux
[ 16.900339] iwlwifi: `N' invalid for parameter `enable_ini'

modprobe
# modprobe iwlwifi
modprobe: ERROR: could not insert 'iwlwifi': Invalid argument

-------------------------------------------------------------------------------------------------
expected behaviour:
# uname -a;dmesg | grep iwlw
Linux t490 6.1.0-13-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.55-1
(2023-09-29) x86_64 GNU/Linux
[ 17.994429] iwlwifi 0000:00:14.3: enabling device (0000 -> 0002)
[ 18.013920] iwlwifi 0000:00:14.3: firmware: direct-loading firmware
iwlwifi-9000-pu-b0-jf-b0-46.ucode
[ 18.014248] iwlwifi 0000:00:14.3: loaded firmware version
46.ea3728ee.0 9000-pu-b0-jf-b0-46.ucode op_mode iwlmvm
[ 18.200836] iwlwifi 0000:00:14.3: BIOS contains WGDS but no WRDS
[ 18.201012] iwlwifi 0000:00:14.3: Detected Intel(R) Wireless-AC 9560
160MHz, REV=0x312
[ 18.266178] iwlwifi 0000:00:14.3: base HW address: 50:eb:71:1d:88:cd,
OTP minor version: 0x4
[ 18.352070] iwlwifi 0000:00:14.3 wlp0s20f3: renamed from wlan0

Sidenote: the backport kernel works fine also.

Regards
Marc

[Salvatore Bonaccorso]

Hi,

Thanks for the report.

Since upstream e0c1ca236e28 ("wifi: iwlwifi: honor the enable_ini
value") in 6.7-rc1 and backported to 6.6.2, 6.5.12 and 6.1.63 the
values of enable_ini are honoured.

Please have a look where in /etc/modprobe.d/*.conf you have
enable_ini=N. I suspect it is a customized own file. The value is not
correct and should be either 1 or 0 here.

Regards,
Salvatore

[Salvatore Bonaccorso]

Hi

On Thu, Dec 07, 2023 at 01:41:19PM +0100, Marc wrote:
> Indeed! So thank you so much Salvatore!
>
> -----------------------

> uname -a;dmesg | grep iwlw
> Linux t490 6.1.0-14-amd64 #1 SMP PREEMPT_DYNAMIC Debian 6.1.64-1
> (2023-11-30) x86_64 GNU/Linux

> [ 16.115308] iwlwifi 0000:00:14.3: enabling device (0000 -> 0002)
> [ 16.136583] iwlwifi 0000:00:14.3: firmware: direct-loading firmware
> iwlwifi-9000-pu-b0-jf-b0-46.ucode
> [ 16.136607] iwlwifi 0000:00:14.3: WRT: Overriding region id 0
> [ 16.136610] iwlwifi 0000:00:14.3: WRT: Overriding region id 1
> [ 16.136611] iwlwifi 0000:00:14.3: WRT: Overriding region id 2
> [ 16.136612] iwlwifi 0000:00:14.3: WRT: Overriding region id 3
> [ 16.136613] iwlwifi 0000:00:14.3: WRT: Overriding region id 4
> [ 16.136613] iwlwifi 0000:00:14.3: WRT: Overriding region id 6
> [ 16.136614] iwlwifi 0000:00:14.3: WRT: Overriding region id 8
> [ 16.136615] iwlwifi 0000:00:14.3: WRT: Overriding region id 9
> [ 16.136616] iwlwifi 0000:00:14.3: WRT: Overriding region id 10
> [ 16.136617] iwlwifi 0000:00:14.3: WRT: Overriding region id 11
> [ 16.136618] iwlwifi 0000:00:14.3: WRT: Overriding region id 15
> [ 16.136619] iwlwifi 0000:00:14.3: WRT: Overriding region id 16
> [ 16.136619] iwlwifi 0000:00:14.3: WRT: Overriding region id 18
> [ 16.136620] iwlwifi 0000:00:14.3: WRT: Overriding region id 19
> [ 16.136621] iwlwifi 0000:00:14.3: WRT: Overriding region id 20
> [ 16.136622] iwlwifi 0000:00:14.3: WRT: Overriding region id 21
> [ 16.136623] iwlwifi 0000:00:14.3: WRT: Overriding region id 28
> [ 16.136626] iwlwifi 0000:00:14.3: WRT: Overriding region id 29
> [ 16.136934] iwlwifi 0000:00:14.3: firmware: failed to load
> iwl-debug-yoyo.bin (-2)
> [ 16.136944] iwlwifi 0000:00:14.3: firmware: failed to load
> iwl-debug-yoyo.bin (-2)
> [ 16.136946] iwlwifi 0000:00:14.3: loaded firmware version 46.ea3728ee.0
> 9000-pu-b0-jf-b0-46.ucode op_mode iwlmvm
> [ 16.317499] iwlwifi 0000:00:14.3: BIOS contains WGDS but no WRDS
> [ 16.319451] iwlwifi 0000:00:14.3: Detected Intel(R) Wireless-AC 9560
> 160MHz, REV=0x312
> [ 16.377004] iwlwifi 0000:00:14.3: base HW address: 50:eb:71:1d:88:cd, OTP
> minor version: 0x4
> [ 16.550372] iwlwifi 0000:00:14.3 wlp0s20f3: renamed from wlan0
> ----------------------------------------------------------------------

Perfect, thanks for reporting back!

Note there was a missinformation in the previous reply. The values for
enable_ini would be:

parm: enable_ini:0:disable, 1-15:FW_DBG_PRESET Values, 16:enabled without preset value defined,Debug INI TLV FW debug infrastructure (default: 16)

But if you do not need the setting just drop it.

Regards,
Salvatore