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Tue, 07 Jul 2026 15:19:59 -0700 (PDT) Message-ID: Date: Wed, 8 Jul 2026 07:19:57 +0900 Precedence: bulk X-Mailing-List: linux-usb@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [Bug 221721] New: prom21-xhci does not allow to use USB keyboard in plymouth From: Jihong Min To: Thorsten Leemhuis Cc: bugzilla-daemon@kernel.org, Linux kernel regressions list , linux-usb@vger.kernel.org, marx.tomasz@gmail.com References: <328d3158-8086-4de7-a96e-7c2a514e3018@leemhuis.info> <620721eb-2b0e-4279-81e2-420996195206@gmail.com> Content-Language: en-US In-Reply-To: <620721eb-2b0e-4279-81e2-420996195206@gmail.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit Hi, PR for Dracut-ng is now submitted: https://github.com/dracut-ng/dracut/pull/2491 Sincerely, Jihong Min On 7/7/26 18:53, Jihong Min wrote: > With a little more of thinking, I think this happens due to the > initramfs building tool not including xhci-pci-prom21.ko when > xhci-pci.ko is built with the Kconfig where USB_XHCI_PCI_PROM21 was enabled. > > Can you check your initramfs file for whether it holds > xhci-pci-prom21.ko correctly, or not? > > For example, with dracut, you can do something like: > cat <<'EOF' | sudo tee /etc/dracut.conf.d/10-xhci-pci-prom21.conf > # PROM21 xHCI PCI glue is needed before root/LUKS unlock when xhci-pci > is modular. > force_drivers+=" xhci-pci-prom21 " > EOF > > > Sincerely, > Jihong Min > > > On 7/7/26 17:03, Thorsten Leemhuis wrote: >> [Switching to email, hope this will work] >> >> Jihong Min, it seems a recent change of yours is causing trouble. See >> below for details. >> >> Side note, but not my area of expertise, so feel free to ignore this, as >> I might be sending people in the wrong direction and it's just a hunch >> anyway: wonder if this is another of those situations where the driver >> needs to be in the initramfs. Tomasz, did you have SENSORS_PROM21_XHCI=m >> when things were broken? And if yes: have you tried if adding it to the >> initramfs or setting SENSORS_PROM21_XHCI=y helps? >> >> Ciao, Thorsten >> >> On 7/4/26 17:41, bugzilla-daemon@kernel.org wrote: >>> https://bugzilla.kernel.org/show_bug.cgi?id=221721 >>> >>> Bug ID: 221721 >>> Summary: prom21-xhci does not allow to use USB keyboard in >>> plymouth >>> Product: Drivers >>> Version: 2.5 >>> Hardware: AMD >>> OS: Linux >>> Status: NEW >>> Severity: low >>> Priority: P3 >>> Component: USB >>> Assignee: drivers_usb@kernel-bugs.kernel.org >>> Reporter: marx.tomasz@gmail.com >>> Regression: No >>> >>> Created attachment 310416 >>> --> https://bugzilla.kernel.org/attachment.cgi?id=310416&action=edit >>> output of "sudo lsusb -v" >>> >>> Hi, >>> >>> After update to 7.2-rc1 I was unable to type in LUKS password in plymouth. I >>> tried both of my USB keyboards, but both of them just briefly lit up the LEDs >>> and then seemed to turn off. Bisection pointed to >>> >>> commit 364f4a55c661641c02c86a849f0608d8fc3c0006 >>> Merge: e4b4bfaa5090 1c2b66a7d725 >>> Author: Linus Torvalds >>> Date: Mon Jun 22 12:09:47 2026 -0700 >>> >>> Merge tag 'usb-7.2-rc1' of >>> git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/usb >>> >>> and then >>> >>> commit 9e896b4a48c4e815956d28961448041c80ad5a19 (HEAD) >>> Author: Jihong Min >>> Date: Tue May 19 09:07:31 2026 +0900 >>> >>> usb: xhci-pci: add AMD Promontory 21 PCI glue >>> >>> After setting SENSORS_PROM21_XHCI=n and compiling kernel again, I'm able to use >>> my PC normally. >>> >>> CPU: AMD Ryzen 9 9900X >>> Motherboard: X870I AORUS PRO ICE >>> Output of "lsusb -v" provided in attachment. >>> >> >