Bug#1110780: linux-image-6.12.38+deb13-amd64: HID BPF support is not enabled by default

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From	Salvatore Bonaccorso <carnil@debian.org>
Newsgroups	linux.debian.bugs.dist, linux.debian.kernel
Subject	Bug#1110780: linux-image-6.12.38+deb13-amd64: HID BPF support is not enabled by default
Date	Mon, 18 Aug 2025 08:10:01 +0200
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Hi,

On Mon, Aug 11, 2025 at 12:33:21PM +0530, Raghavendra Kamath wrote:
> Package: src:linux
> Version: 6.12.38-1
> Severity: wishlist
> 
> Dear Maintainer,
> 
>    * What led up to the situation?
> 	I am an artist using digital graphic tablet and I need a program
> 	called udev-hid-bpf to configure my tablet pen. To use this tool
> 	there needs to be HID-BPF support enabled in the kernel. This is
> 	missing in the default kernel. I would have to use liquorix or
> 	some other kernel but those give other issues such as wifi not
> 	working etc.
> 	So I request you to please enable support for HID-BPF support
> 	in the kernel.
> 	Many artists who are using linux will need this support enabled.
> 	You can read more about this on the blog post from David Revoy
> 	here - https://www.davidrevoy.com/article1053/xppen-artist-pro-19-gen-2-review-on-gnulinux#fix-unwanted-eraser-mode-on-stylus
> 
>    * What exactly did you do (or not do) that was effective (or
>      ineffective)?
>      I tried to report this issue to the udev-hid-bpf developers and
>      they were the ones who told me that debian doesn't have this
>      support. You can read the bug report here - https://gitlab.freedesktop.org/libevdev/udev-hid-bpf/-/issues/70#note_3046884
> 
>    * What outcome did you expect instead?
> 	HID-BPF support to be enabled by default in the kernel

It might make only sense really if we have as ewll udev-hid-bpf . But
as this is like a chicken-egg problem, I'm proposing to enable HID_BPF
alrady on kernel config side, I will see if there are objections from
the other team members.

Cf. https://salsa.debian.org/kernel-team/linux/-/merge_requests/1614

Regards,
Salvatore

Thread

Bug#1110780: linux-image-6.12.38+deb13-amd64: HID BPF support is not enabled by default Raghavendra Kamath <raghu@emblik.in> - 2025-08-11 09:10 +0200
  Bug#1110780: linux-image-6.12.38+deb13-amd64: HID BPF support is not enabled by default David Revoy <davidrevoy@protonmail.com> - 2025-08-14 15:50 +0200
  Bug#1110780: linux-image-6.12.38+deb13-amd64: HID BPF support is not enabled by default Salvatore Bonaccorso <carnil@debian.org> - 2025-08-18 08:10 +0200
    Bug#1110780: linux-image-6.12.38+deb13-amd64: HID BPF support is not enabled by default Raghavendra Kamath <raghu@emblik.in> - 2025-08-18 09:30 +0200
      Bug#1110780: linux-image-6.12.38+deb13-amd64: HID BPF support is not enabled by default Salvatore Bonaccorso <carnil@debian.org> - 2025-08-18 11:10 +0200

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