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Bug#1151916: linux: xhci AMD Renoir [1022:1639] USB hotplug detection broken after boot on 6.12.113

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Thank you Salvatore,

I started the process and wrongly marked a commit as good when it is bad. I realize that on 6.12.113, the issue no longer occurs when I disconnect power from my AM06 mini PC. Issue however happens during reboot or warm boot.

I need to start over with that in mind but am traveling this week.

Thank you for sharing the steps, I will resume and revert back next week.

Kind regards,
Youl

Le 24 octobre 2026 17:06:45 GMT+02:00, Salvatore Bonaccorso <carnil@debian.org> a écrit :
>Control: tags -1 + moreinfo upstream
>
>Hi,
>
>On Sat, Oct 24, 2026 at 02:47:14PM +0200, youl wrote:
>> Source: linux
>> Version: 6.12.113-1
>> Severity: important
>> X-Debbugs-Cc: youl@murena.io
>> 
>> Dear Maintainer,
>> 
>> --- Details ---
>> A regression has been introduced in kernel version 6.12.113
>> affecting the AMD Renoir xHCI USB controllers [1022:1639]. USB
>> hotplug detection completely breaks after boot, though all devices
>> connected at boot enumerate successfully.
>
>As you are experiencing the regression from 6.12.107-1 can you please
>bisect the changes upstream and report back what is the causing
>change.
>
>    git clone --single-branch -b linux-6.12.y https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable.git
>    cd linux-stable
>    git checkout v6.12.107
>    cp /boot/config-$(uname -r) .config
>    yes '' | make localmodconfig
>    make savedefconfig
>    mv defconfig arch/x86/configs/my_defconfig
>
>    # test 6.12.107 to ensure this is "good"
>    make my_defconfig
>    make -j $(nproc) bindeb-pkg
>    ... install the resulting .deb package and confirm problem does not exist
>
>    # test 6.12.113 to ensure this is "bad"
>    git checkout v6.12.113
>    make my_defconfig
>    make -j $(nproc) bindeb-pkg
>    ... install the resulting .deb package and confirm problem exists
>
>With that confirmed, the bisection can start:
>
>    git bisect start --first-parent
>    git bisect good v6.12.107
>    git bisect bad v6.12.113
>
>In each bisection step git checks out a state between the oldest
>known-bad and the newest known-good commit. In each step test using:
>
>    make my_defconfig
>    make -j $(nproc) bindeb-pkg
>    ... install, verify if problem exists
>
>and if the problem is hit run:
>
>    git bisect bad
>
>and if the problem doesn't trigger run:
>
>    git bisect good
>
>. Please pay attention to always select the just built kernel for
>booting, it won't always be the default kernel picked up by grub.
>
>Iterate until git announces to have identified the first bad commit.
>
>Then provide the output of
>
>    git bisect log
>
>In the course of the bisection you might have to uninstall previous
>kernels again to not exhaust the disk space in /boot. Also in the end
>uninstall all self-built kernels again.
>
>Regards,
>Salvatore

-- Envoyé depuis /e/OS Mail.

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Bug#1151916: linux: xhci AMD Renoir [1022:1639] USB hotplug detection broken after boot on 6.12.113 youl <youl@murena.io> - 2026-10-24 14:50 +0200
  Processed: Re: Bug#1151916: linux: xhci AMD Renoir [1022:1639]  USB hotplug detection broken after boot on 6.12.113 "Debian Bug Tracking System" <owner@bugs.debian.org> - 2026-10-24 17:20 +0200
  Bug#1151916: linux: xhci AMD Renoir [1022:1639] USB hotplug detection broken after boot on 6.12.113 Salvatore Bonaccorso <carnil@debian.org> - 2026-10-24 17:20 +0200
    Bug#1151916: linux: xhci AMD Renoir [1022:1639] USB hotplug detection broken after boot on 6.12.113 "youl@murena.io" <youl@murena.io> - 2026-10-26 14:20 +0100
    Bug#1151916: linux: xhci AMD Renoir [1022:1639] USB hotplug detection broken after boot on 6.12.113 youl@murena.io - 2026-11-03 20:10 +0100

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