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Date:   Wed, 26 Jul 2023 21:56:28 -0500
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Subject: Re: [REGRESSION] IRQ override revert breaks keyboard on Lenovo Yoga 7
 14ARB7
Content-Language: en-US
To:     August Wikerfors <git@augustwikerfors.se>,
        "Rafael J. Wysocki" <rafael.j.wysocki@intel.com>,
        "Rafael J. Wysocki" <rafael@kernel.org>
Cc:     linux-acpi@vger.kernel.org, linux-kernel@vger.kernel.org,
        regressions@lists.linux.dev
References: <596b9c4a-fb83-a8ab-3a44-6052d83fa546@augustwikerfors.se>
From:   Mario Limonciello <mario.limonciello@amd.com>
In-Reply-To: <596b9c4a-fb83-a8ab-3a44-6052d83fa546@augustwikerfors.se>
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On 7/26/23 17:54, August Wikerfors wrote:
> Hi,
> 
> Since v6.5-rc1 the keyboard on this laptop no longer works. This problem
> also existed before v6.0-rc1 commit 9946e39fe8d0 ("ACPI: resource: skip
> IRQ override on AMD Zen platforms"), so I suspected the cause to be
> a9c4a912b7dc ("ACPI: resource: Remove "Zen" specific match and quirks")
> which reverted that commit. Reverting a9c4a912b7dc confirmed this theory.
> 
> #regzbot introduced: a9c4a912b7dc
> 
> My specs are:
> Laptop model: Lenovo Yoga 7 14ARB7
> BIOS: K5CN40WWT66 (latest beta from [1])
> CPU: AMD Ryzen 5 6600U
> Kernel config: [2]
> Distribution: Arch Linux
> 
> The issue has been confirmed by at least one other user with this
> laptop: [3]
> 
> [1] 
> https://forums.lenovo.com/t5/Lenovo-Yoga-Series-Laptops/Yoga-7-14ARB7-keyboard-lag-when-on-certain-websites-or-when-Vantage-is-opened/m-p/5174991?page=28#5974742
> [2] 
> https://gitlab.archlinux.org/archlinux/packaging/packages/linux/-/raw/d4a56a1e994201b6c607199922aa22e4337b56c9/config
> [3] https://github.com/tomsom/yoga-linux/issues/47
> 
> Regards,
> August Wikerfors

This is unfortunate.  Before we go adding more quirks for your system, 
can you please check for a BIOS upgrade for your system?  If it's 
happening with the latest BIOS, then can you please open a kernel 
bugzilla with an acpidump and dmidecode included?