Hi,

On 7/15/24 9:50 PM, Iñaki Ucar wrote:
> It's the kernel. Going back to 6.9.6 fixes the issue...

Ok, that is a good first step in debugging this.

Can you run evtest with the working kernel and then check which
event node is generating key-presses for the brightness keys,
that should help narrow it down further.

Likely candidates are: "LG WMI hotkeys",
"AT translated set 2 keyboard", "Video Bus".

But if none of those 3 reports brightness key presses, please
try all available /dev/input/event# nodes and please report back
here the name(e.g. "LG WMI hotkeys") of the /dev/input/event# node
which is reporting the brightness key presses.

Also which kernel version is the first broken kernel version
for you ?


Regards,

Hans





> 
> Iñaki
> 
> On Mon, 15 Jul 2024 at 21:34, Iñaki Ucar <iu...@fedoraproject.org 
> <mailto:iu...@fedoraproject.org>> wrote:
> 
> 
> 
>     On Mon, 15 Jul 2024 at 18:53, Jonathan Wright via devel 
> <devel@lists.fedoraproject.org <mailto:devel@lists.fedoraproject.org>> wrote:
> 
>         Are you running KDE with HDR enabled by chance?  That will make the 
> keys non-functional.
> 
> 
>     No, I don't think so. I don't see any HDR option anyways.
> 
>     Iñaki
>      
> 
> 
>         On Mon, Jul 15, 2024 at 3:52 AM Samuel Sieb <sam...@sieb.net 
> <mailto:sam...@sieb.net>> wrote:
> 
>             On 7/15/24 1:47 AM, Iñaki Ucar wrote:
>             > On Mon, 15 Jul 2024 at 10:34, Samuel Sieb <sam...@sieb.net 
> <mailto:sam...@sieb.net>
>             > <mailto:sam...@sieb.net <mailto:sam...@sieb.net>>> wrote:
>             >
>             >     On 7/15/24 1:23 AM, Iñaki Ucar wrote:
>             >      >
>             >      >
>             >      > On Mon, 15 Jul 2024 at 09:56, Samuel Sieb 
> <sam...@sieb.net <mailto:sam...@sieb.net>
>             >     <mailto:sam...@sieb.net <mailto:sam...@sieb.net>>
>             >      > <mailto:sam...@sieb.net <mailto:sam...@sieb.net> 
> <mailto:sam...@sieb.net <mailto:sam...@sieb.net>>>> wrote:
>             >      >     You will need to find out what the keys trigger.
>             >      >     Do you see any messages in the journal when you 
> press the keys?
>             >      >
>             >      >
>             >      > Nothing in the journal.
>             >      >
>             >      >     Install "evtest" and try watching various sources to 
> see if
>             >     you get a
>             >      >     reaction when pressing the keys.
>             >      >
>             >      >
>             >      > Nothing either. I tried monitoring the keyboard as well 
> as the
>             >     event fd
>             >      > called "LG WMI hotkeys", and those keys trigger nothing. 
> :( Does
>             >     this
>             >      > mean that it's a kernel issue?
>             >
>             >     Probably.  Do you have the "lg-laptop" kernel module loaded?
>             >
>             > I do:
>             > $ lsmod | grep lg
>             > lg_laptop              32768  0
>             > sparse_keymap          12288  1 lg_laptop
>             > i2c_algo_bit           20480  2 xe,i915
>             > wmi                    36864  3 video,lg_laptop,wmi_bmof
> 
>             I suggest you contact the mailing list at:
>             platform-driver-...@vger.kernel.org 
> <mailto:platform-driver-...@vger.kernel.org>
> 
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> 
>         -- 
>         Jonathan Wright
>         AlmaLinux Foundation
>         Mattermost: chat 
> <https://chat.almalinux.org/almalinux/messages/@jonathan>
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> 
> 
>     -- 
>     Iñaki Úcar
> 
> 
> 
> -- 
> Iñaki Úcar
> 

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