From 1c5b4c2b70b1c388e34874b2a3acda64f46bbc9a Mon Sep 17 00:00:00 2001 From: Srihari Vijayaraghavan Date: Wed, 7 Jan 2015 16:25:53 -0800 Subject: Input: i8042 - reset keyboard to fix Elantech touchpad detection MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit commit 148e9a711e034e06310a8c36b64957934ebe30f2 upstream. On some laptops, keyboard needs to be reset in order to successfully detect touchpad (e.g., some Gigabyte laptop models with Elantech touchpads). Without resettin keyboard touchpad pretends to be completely dead. Based on the original patch by Mateusz Jończyk this version has been expanded to include DMI based detection & application of the fix automatically on the affected models of laptops. This has been confirmed to fix problem by three users already on three different models of laptops. Bugzilla: https://bugzilla.kernel.org/show_bug.cgi?id=81331 Signed-off-by: Srihari Vijayaraghavan Acked-by: Mateusz Jończyk Tested-by: Srihari Vijayaraghavan Tested by: Zakariya Dehlawi Tested-by: Guillaum Bouchard Signed-off-by: Dmitry Torokhov Signed-off-by: Ben Hutchings --- Documentation/kernel-parameters.txt | 1 + 1 file changed, 1 insertion(+) (limited to 'Documentation/kernel-parameters.txt') diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt index 1b196ea..f0001eb 100644 --- a/Documentation/kernel-parameters.txt +++ b/Documentation/kernel-parameters.txt @@ -940,6 +940,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted. i8042.notimeout [HW] Ignore timeout condition signalled by conroller i8042.reset [HW] Reset the controller during init and cleanup i8042.unlock [HW] Unlock (ignore) the keylock + i8042.kbdreset [HW] Reset device connected to KBD port i810= [HW,DRM] -- cgit v1.1