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Commit 68da1664 authored by Dmitry Torokhov's avatar Dmitry Torokhov
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Input: i8042 - disable active multiplexing by default 

Active multiplexing is a nice feature as it allows several pointing devices
(such as touchpad and external mouse) use their native protocols at the
same time. Unfortunately many manufacturers do not implement the feature
properly even though they advertise it. The problematic implementations are
never fixed, since Windows by default does not use this mode, and move from
one BIOS/model of laptop to another. When active multiplexing is broken
turning it on usually results in touchpad, keyboard, or both unresponsive.

With PS/2 usage on decline (most of PS/2 devices in use nowadays are
internal laptop touchpads), I expect number of users who have laptops with
working MUX implementation, docking stations with external PS/2 ports, and
who are still using external PS/2 mice, to be rather small. Let's flip the
default to be OFF and allow activating it through i8042.nomux=0 kernel
option.  We'll also keep DMI table where we can record known good models.
Acked-by: default avatarJiri Kosina <jkosina@suse.cz>
Acked-by: default avatarHans de Goede <hdegoede@redhat.com>
Signed-off-by: default avatarDmitry Torokhov <dmitry.torokhov@gmail.com>
parent 9ff84a17
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Showing with 10 additions and 275 deletions
Documentation/kernel-parameters.txt
View file @ 68da1664
...@@ -1237,7 +1237,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted. ...@@ -1237,7 +1237,7 @@ bytes respectively. Such letter suffixes can also be entirely omitted.
i8042.noloop [HW] Disable the AUX Loopback command while probing i8042.noloop [HW] Disable the AUX Loopback command while probing
for the AUX port for the AUX port
i8042.nomux [HW] Don't check presence of an active multiplexing i8042.nomux [HW] Don't check presence of an active multiplexing
controller controller. Default: true.
i8042.nopnp [HW] Don't use ACPIPnP / PnPBIOS to discover KBD/AUX i8042.nopnp [HW] Don't use ACPIPnP / PnPBIOS to discover KBD/AUX
controllers controllers
i8042.notimeout [HW] Ignore timeout condition signalled by controller i8042.notimeout [HW] Ignore timeout condition signalled by controller
......
drivers/input/serio/i8042-x86ia64io.h
View file @ 68da1664
...@@ -207,282 +207,17 @@ static const struct dmi_system_id __initconst i8042_dmi_noloop_table[] = { ...@@ -207,282 +207,17 @@ static const struct dmi_system_id __initconst i8042_dmi_noloop_table[] = {
}; };
/* /*
* Some Fujitsu notebooks are having trouble with touchpads if * Some laptops do implement active multiplexing mode correctly;
* active multiplexing mode is activated. Luckily they don't have * unfortunately they are in minority.
* external PS/2 ports so we can safely disable it.
* ... apparently some Toshibas don't like MUX mode either and
* die horrible death on reboot.
*/ */
static const struct dmi_system_id __initconst i8042_dmi_nomux_table[] = { static const struct dmi_system_id __initconst i8042_dmi_mux_table[] = {
{
/* Fujitsu Lifebook P7010/P7010D */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
DMI_MATCH(DMI_PRODUCT_NAME, "P7010"),
},
},
{
/* Fujitsu Lifebook P7010 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
DMI_MATCH(DMI_PRODUCT_NAME, "0000000000"),
},
},
{
/* Fujitsu Lifebook P5020D */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook P Series"),
},
},
{
/* Fujitsu Lifebook S2000 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook S Series"),
},
},
{
/* Fujitsu Lifebook S6230 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook S6230"),
},
},
{
/* Fujitsu T70H */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
DMI_MATCH(DMI_PRODUCT_NAME, "FMVLT70H"),
},
},
{
/* Fujitsu-Siemens Lifebook T3010 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK T3010"),
},
},
{
/* Fujitsu-Siemens Lifebook E4010 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK E4010"),
},
},
{
/* Fujitsu-Siemens Amilo Pro 2010 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pro V2010"),
},
},
{
/* Fujitsu-Siemens Amilo Pro 2030 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
DMI_MATCH(DMI_PRODUCT_NAME, "AMILO PRO V2030"),
},
},
{
/*
* No data is coming from the touchscreen unless KBC
* is in legacy mode.
*/
/* Panasonic CF-29 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Matsushita"),
DMI_MATCH(DMI_PRODUCT_NAME, "CF-29"),
},
},
{
/*
* HP Pavilion DV4017EA -
* errors on MUX ports are reported without raising AUXDATA
* causing "spurious NAK" messages.
*/
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
DMI_MATCH(DMI_PRODUCT_NAME, "Pavilion dv4000 (EA032EA#ABF)"),
},
},
{
/*
* HP Pavilion ZT1000 -
* like DV4017EA does not raise AUXERR for errors on MUX ports.
*/
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion Notebook PC"),
DMI_MATCH(DMI_PRODUCT_VERSION, "HP Pavilion Notebook ZT1000"),
},
},
{ {
/* /*
* HP Pavilion DV4270ca - * Panasonic CF-18 needs to be in MUX mode since the
* like DV4017EA does not raise AUXERR for errors on MUX ports. * touchscreen is on serio3 and it also has touchpad.
*/ */
.matches = { .matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), DMI_MATCH(DMI_PRODUCT_NAME, "CF-18"),
DMI_MATCH(DMI_PRODUCT_NAME, "Pavilion dv4000 (EH476UA#ABL)"),
},
},
{
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
DMI_MATCH(DMI_PRODUCT_NAME, "Satellite P10"),
},
},
{
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
DMI_MATCH(DMI_PRODUCT_NAME, "EQUIUM A110"),
},
},
{
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
DMI_MATCH(DMI_PRODUCT_NAME, "SATELLITE C850D"),
},
},
{
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "ALIENWARE"),
DMI_MATCH(DMI_PRODUCT_NAME, "Sentia"),
},
},
{
/* Sharp Actius MM20 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "SHARP"),
DMI_MATCH(DMI_PRODUCT_NAME, "PC-MM20 Series"),
},
},
{
/* Sony Vaio FS-115b */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
DMI_MATCH(DMI_PRODUCT_NAME, "VGN-FS115B"),
},
},
{
/*
* Sony Vaio FZ-240E -
* reset and GET ID commands issued via KBD port are
* sometimes being delivered to AUX3.
*/
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
DMI_MATCH(DMI_PRODUCT_NAME, "VGN-FZ240E"),
},
},
{
/*
* Most (all?) VAIOs do not have external PS/2 ports nor
* they implement active multiplexing properly, and
* MUX discovery usually messes up keyboard/touchpad.
*/
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
DMI_MATCH(DMI_BOARD_NAME, "VAIO"),
},
},
{
/* Amoi M636/A737 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Amoi Electronics CO.,LTD."),
DMI_MATCH(DMI_PRODUCT_NAME, "M636/A737 platform"),
},
},
{
/* Lenovo 3000 n100 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
DMI_MATCH(DMI_PRODUCT_NAME, "076804U"),
},
},
{
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
},
},
{
/* Acer Aspire 5710 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5710"),
},
},
{
/* Gericom Bellagio */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Gericom"),
DMI_MATCH(DMI_PRODUCT_NAME, "N34AS6"),
},
},
{
/* IBM 2656 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "IBM"),
DMI_MATCH(DMI_PRODUCT_NAME, "2656"),
},
},
{
/* Dell XPS M1530 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "XPS M1530"),
},
},
{
/* Compal HEL80I */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "COMPAL"),
DMI_MATCH(DMI_PRODUCT_NAME, "HEL80I"),
},
},
{
/* Dell Vostro 1510 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "Vostro1510"),
},
},
{
/* Acer Aspire 5536 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5536"),
DMI_MATCH(DMI_PRODUCT_VERSION, "0100"),
},
},
{
/* Dell Vostro V13 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
DMI_MATCH(DMI_PRODUCT_NAME, "Vostro V13"),
},
},
{
/* Newer HP Pavilion dv4 models */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dv4 Notebook PC"),
},
},
{
/* Asus X450LCP */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
DMI_MATCH(DMI_PRODUCT_NAME, "X450LCP"),
},
},
{
/* Avatar AVIU-145A6 */
.matches = {
DMI_MATCH(DMI_SYS_VENDOR, "Intel"),
DMI_MATCH(DMI_PRODUCT_NAME, "IC4I"),
}, },
}, },
{ } { }
...@@ -1005,8 +740,8 @@ static int __init i8042_platform_init(void) ...@@ -1005,8 +740,8 @@ static int __init i8042_platform_init(void)
if (dmi_check_system(i8042_dmi_noloop_table)) if (dmi_check_system(i8042_dmi_noloop_table))
i8042_noloop = true; i8042_noloop = true;
if (dmi_check_system(i8042_dmi_nomux_table)) if (dmi_check_system(i8042_dmi_mux_table))
i8042_nomux = true; i8042_nomux = false;
if (dmi_check_system(i8042_dmi_notimeout_table)) if (dmi_check_system(i8042_dmi_notimeout_table))
i8042_notimeout = true; i8042_notimeout = true;
......
drivers/input/serio/i8042.c
View file @ 68da1664
...@@ -39,7 +39,7 @@ static bool i8042_noaux; ...@@ -39,7 +39,7 @@ static bool i8042_noaux;
module_param_named(noaux, i8042_noaux, bool, 0); module_param_named(noaux, i8042_noaux, bool, 0);
MODULE_PARM_DESC(noaux, "Do not probe or use AUX (mouse) port."); MODULE_PARM_DESC(noaux, "Do not probe or use AUX (mouse) port.");
static bool i8042_nomux; static bool i8042_nomux = true;
module_param_named(nomux, i8042_nomux, bool, 0); module_param_named(nomux, i8042_nomux, bool, 0);
MODULE_PARM_DESC(nomux, "Do not check whether an active multiplexing controller is present."); MODULE_PARM_DESC(nomux, "Do not check whether an active multiplexing controller is present.");
......
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