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    Subject[RFT/PATCH] Toshiba Satellite, Synaptics & keyboard problems
    Date
    Hi,

    If anyone experiencing keyboard getting "stuck" when you use Synaptics
    touchpad in native mode on Toshiba Satellite type notebooks it seems that
    lowering rate to 40 pps (which is roughly the same as standard PS/2 rate
    bytewise) helps.

    Please try the patch below (should apply to -mm tree) and see if it helps
    any. If not using -mm tree just use "psmouse.rate=40" or "modprobe psmouse
    rate=40" to check if fix is working for you and let me know.

    Thanks!

    --
    Dmitry


    ===================================================================


    ChangeSet@1.1960, 2004-11-08 01:51:37-05:00, dtor_core@ameritech.net
    Input: synaptics - use DMI to detect Toshiba Satellite notebooks
    and automatically reduce touchpad reporting rate to 40 pps
    as they have trouble handling high rate (80 pps).

    Signed-off-by: Dmitry Torokhov <dtor@mail.ru>


    synaptics.c | 26 ++++++++++++++++++++++++++
    1 files changed, 26 insertions(+)


    ===================================================================



    diff -Nru a/drivers/input/mouse/synaptics.c b/drivers/input/mouse/synaptics.c
    --- a/drivers/input/mouse/synaptics.c 2004-11-08 01:52:54 -05:00
    +++ b/drivers/input/mouse/synaptics.c 2004-11-08 01:52:54 -05:00
    @@ -604,6 +604,20 @@
    return 0;
    }

    +#if defined(__i386__)
    +#include <linux/dmi.h>
    +static struct dmi_system_id synaptics_dmi_table[] = {
    + {
    + .ident = "Toshiba Satellite",
    + .matches = {
    + DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
    + DMI_MATCH(DMI_PRODUCT_NAME , "Satellite"),
    + },
    + },
    + { }
    +};
    +#endif
    +
    int synaptics_init(struct psmouse *psmouse)
    {
    struct synaptics_data *priv;
    @@ -636,6 +650,18 @@
    psmouse->disconnect = synaptics_disconnect;
    psmouse->reconnect = synaptics_reconnect;
    psmouse->pktsize = 6;
    +
    +#if defined(__i386__)
    + /*
    + * Toshiba's KBC seems to have trouble handling data from
    + * Synaptics as full rate, switch to lower rate which is roughly
    + * thye same as rate of standard PS/2 mouse.
    + */
    + if (dmi_check_system(synaptics_dmi_table)) {
    + printk(KERN_INFO "synaptics: Toshiba Satellite detected, limiting rate to 40pps.\n");
    + psmouse->rate = 40;
    + }
    +#endif

    return 0;

    -
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