Hello, I want to let you know that Dell officially provides modified psmouse/alps.c driver for Ubuntu 14.04 from Dell support webpage: http://www.dell.com/support/home/ga/en/gadhs1/Drivers/DriversDetails?driverId=CGC6T I do not own any of E5250/5250, E5450/5450, E5550/5550 machines, but at least you should know that Dell (or some subcontractor) is modifying linux kernel drivers to work on Dell machines with Ubuntu. I generated diff against upstream linux v3.17-rc1 version. Maybe it can be useful for other people (who do not use Ubuntu and therefore cannot install Dell driver package). Btw, same alps_probe_trackstick_v3() "hack" code is already for rushmore devices in upstream kernel... --- linux-3.17-rc1/drivers/input/mouse/alps.c 2015-02-08 12:30:54.668554221 +0100 +++ houston-15_A10.fish.tar.gz/debs/touchpad-alps-trusty-dkms_1.0_all.deb/usr/src/touchpad-alps-trusty-1.0/alps.c 2014-09-15 11:49:10.000000000 +0200 @@ -24,12 +24,15 @@ #include "psmouse.h" #include "alps.h" +#define ALPS_DRIVER_RELEASE_DATE "2014/08/25" + /* * Definitions for ALPS version 3 and 4 command mode protocol */ #define ALPS_CMD_NIBBLE_10 0x01f2 #define ALPS_REG_BASE_RUSHMORE 0xc2c0 +#define ALPS_REG_BASE_V7 0xc2c0 #define ALPS_REG_BASE_PINNACLE 0x0000 static const struct alps_nibble_commands alps_v3_nibble_commands[] = { @@ -2208,6 +2211,12 @@ static int alps_identify(struct psmouse priv->proto_version = ALPS_PROTO_V7; alps_set_defaults(priv); + /* hack to make addr_command, nibble_command available */ + psmouse->private = priv; + + if (alps_probe_trackstick_v3(psmouse, ALPS_REG_BASE_V7)) + priv->flags &= ~ALPS_DUALPOINT; + return 0; } else if (ec[0] == 0x88 && ec[1] == 0x08) { priv->proto_version = ALPS_PROTO_V3; @@ -2312,6 +2321,8 @@ int alps_init(struct psmouse *psmouse) if (priv->hw_init(psmouse)) goto init_fail; + printk("ALPS driver in use! %s, date:%s \n", __func__, ALPS_DRIVER_RELEASE_DATE); + /* * Undo part of setup done for us by psmouse core since touchpad * is not a relative device. -- Pali Rohár pali.rohar@xxxxxxxxx
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