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Sat, 19 Sep 2026 11:29:35 -0700 (PDT) Received: from eggarch ([2409:40c4:1019:17ac:cb7e:823e:6cc7:69fc]) by smtp.gmail.com with ESMTPSA id d9443c01a7336-2ddc178889dsm11834085ad.18.2026.09.19.11.29.32 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sat, 19 Sep 2026 11:29:33 -0700 (PDT) Date: Sat, 19 Sep 2026 23:59:29 +0530 From: Lovekesh Solanki To: heiko.brey@gmx.de Cc: linux-input@vger.kernel.org Subject: Re: i8042: Fujitsu LIFEBOOK U7410 needs i8042.nomux (keyboard and touchpad dead) Message-ID: References: <89f36f3f5e4c2d07b9ff72bc0b355875c336e498.camel@gmx.de> Precedence: bulk X-Mailing-List: linux-input@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <89f36f3f5e4c2d07b9ff72bc0b355875c336e498.camel@gmx.de> Hi thanks for the report, On Sat, Sep 19, 2026 at 11:52:19AM +0200, Heiko Brey wrote: > What I tried: > - i8042.nopnp i8042.reset: no change > - i8042.nomux=1 i8042.reset: keyboard and touchpad work, on warm and > cold boot. The multiplexing message and the Spurious ACK messages > no longer appear. > (I have not tested i8042.nomux=1 without i8042.reset.) > > Could a DMI quirk with nomux be added for this model? Yes, but could you first see whether including the reset parameter is needed? Or it works just with nomux=1 so we won't include unneeded quirks in the patch. Thanks, Lovekesh