We're seeing the touchpad not send all the touch release events. This can result in the cursor getting stuck generating scroll events instead of cursor movement for single finger motion. With the cursor not moving, users think the trackpad is broken. With libinput-record, you can see that it doesn't always get to a neutral state when there are no fingers on the touchpad.
MT_QUIRK_STICKY_FINGERS was insufficient alone. The timer often didn't fire to release all the contacts. MT_QUIRK_NOT_SEEN_MEANS_UP seems to help with tracking the touches, and allows the timer to fire properly when needed.
You can reproduce by touching the trackpad with 4 fingers spread out, then pulling them all together and removing from the track pad.
libinput-record output without the patch: - evdev: - [ 2, 591028, 4, 5, 2561700] # EV_MSC / MSC_TIMESTAMP 2561700 - [ 2, 591028, 0, 0, 0] # ------------ SYN_REPORT (0) ---------- +7ms - evdev: - [ 2, 603307, 3, 57, -1] # EV_ABS / ABS_MT_TRACKING_ID -1 - [ 2, 603307, 1, 334, 1] # EV_KEY / BTN_TOOL_TRIPLETAP 1 - [ 2, 603307, 1, 335, 0] # EV_KEY / BTN_TOOL_QUADTAP 0 - [ 2, 603307, 4, 5, 2570700] # EV_MSC / MSC_TIMESTAMP 2570700 - [ 2, 603307, 0, 0, 0] # ------------ SYN_REPORT (0) ---------- +12ms
Note the lack of "# Touch device in neutral state". There has been no activity for 2 seconds, but the tripletap has not cleared. If you place a finger back on at this point, it gets interpreted as a quadtap.
With this patch: - evdev: - [1123, 442602, 3, 47, 3] # EV_ABS / ABS_MT_SLOT 3 - [1123, 442602, 3, 54, 133] # EV_ABS / ABS_MT_POSITION_Y 133 (+4) - [1123, 442602, 3, 47, 2] # EV_ABS / ABS_MT_SLOT 2 - [1123, 442602, 3, 53, 667] # EV_ABS / ABS_MT_POSITION_X 667 (-2) - [1123, 442602, 3, 54, 121] # EV_ABS / ABS_MT_POSITION_Y 121 (+4) - [1123, 442602, 3, 47, 1] # EV_ABS / ABS_MT_SLOT 1 - [1123, 442602, 3, 57, -1] # EV_ABS / ABS_MT_TRACKING_ID -1 - [1123, 442602, 1, 333, 1] # EV_KEY / BTN_TOOL_DOUBLETAP 1 - [1123, 442602, 1, 334, 0] # EV_KEY / BTN_TOOL_TRIPLETAP 0 - [1123, 442602, 3, 0, 667] # EV_ABS / ABS_X 667 (+321) - [1123, 442602, 3, 1, 121] # EV_ABS / ABS_Y 121 (-204) - [1123, 442602, 4, 5, 196500] # EV_MSC / MSC_TIMESTAMP 196500 - [1123, 442602, 0, 0, 0] # ------------ SYN_REPORT (0) ---------- +5ms - evdev: - [1123, 544680, 3, 47, 2] # EV_ABS / ABS_MT_SLOT 2 - [1123, 544680, 3, 57, -1] # EV_ABS / ABS_MT_TRACKING_ID -1 - [1123, 544680, 3, 47, 3] # EV_ABS / ABS_MT_SLOT 3 - [1123, 544680, 3, 57, -1] # EV_ABS / ABS_MT_TRACKING_ID -1 - [1123, 544680, 1, 330, 0] # EV_KEY / BTN_TOUCH 0 - [1123, 544680, 1, 333, 0] # EV_KEY / BTN_TOOL_DOUBLETAP 0 - [1123, 544680, 0, 0, 0] # ------------ SYN_REPORT (0) ---------- +102ms # Touch device in neutral state
Here the timer fired and cleared the lingering doubletap.
Create a new MT_CLS_CIRQUE by copying MT_CLS_WIN_8 and replacing MT_QUIRK_ALWAYS_VALID with MT_QUIRK_NOT_SEEN_MEANS_UP (MT_QUIRK_STICKY_FINGERS is already in MT_CLS_WIN_8).
Signed-off-by: Jason Andryuk jandryuk@gmail.com Cc: stable@vger.kernel.org
--- This is developed and tested against 5.4 and forward ported to latest upstream.
I don't know if it needs to be quirked more specifically, but the modalias is: input:b0018v0488p121Fe0100-e0,1,3,4,k110,111,145,148,14A,14D,14E,14F,ra0,1,2F,35,36,37,39,m5,lsfw
I don't know if MT_CLS_CIRQUE needs the HID_DG_CONFIDENCE change, but it is included to keep it as close as possible to MT_CLS_WIN_8.
I opened this bug originally with some libinput debugging info: https://gitlab.freedesktop.org/libinput/libinput/-/issues/531
This might be related: https://bugs.launchpad.net/dell-sputnik/+bug/1651635
With this patch I occasionally see an MSC_TIMESTAMP/SYN_REPORT come through after "# Touch device in neutral stat". Is that a problem, or will it just be ignored? --- drivers/hid/hid-ids.h | 3 +++ drivers/hid/hid-multitouch.c | 18 +++++++++++++++++- 2 files changed, 20 insertions(+), 1 deletion(-)
diff --git a/drivers/hid/hid-ids.h b/drivers/hid/hid-ids.h index 74fc1df6e3c2..7e153cf3ab16 100644 --- a/drivers/hid/hid-ids.h +++ b/drivers/hid/hid-ids.h @@ -278,6 +278,9 @@
#define USB_VENDOR_ID_CIDC 0x1677
+#define I2C_VENDOR_ID_CIRQUE 0x0488 +#define I2C_PRODUCT_ID_CIRQUE_121F 0x121F + #define USB_VENDOR_ID_CJTOUCH 0x24b8 #define USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0020 0x0020 #define USB_DEVICE_ID_CJTOUCH_MULTI_TOUCH_0040 0x0040 diff --git a/drivers/hid/hid-multitouch.c b/drivers/hid/hid-multitouch.c index e3152155c4b8..96e653e50e83 100644 --- a/drivers/hid/hid-multitouch.c +++ b/drivers/hid/hid-multitouch.c @@ -208,6 +208,7 @@ static void mt_post_parse(struct mt_device *td, struct mt_application *app); #define MT_CLS_GOOGLE 0x0111 #define MT_CLS_RAZER_BLADE_STEALTH 0x0112 #define MT_CLS_SMART_TECH 0x0113 +#define MT_CLS_CIRQUE 0x0114
#define MT_DEFAULT_MAXCONTACT 10 #define MT_MAX_MAXCONTACT 250 @@ -367,6 +368,14 @@ static const struct mt_class mt_classes[] = { MT_QUIRK_CONTACT_CNT_ACCURATE | MT_QUIRK_SEPARATE_APP_REPORT, }, + { .name = MT_CLS_CIRQUE, + .quirks = MT_QUIRK_NOT_SEEN_MEANS_UP | + MT_QUIRK_IGNORE_DUPLICATES | + MT_QUIRK_HOVERING | + MT_QUIRK_CONTACT_CNT_ACCURATE | + MT_QUIRK_STICKY_FINGERS | + MT_QUIRK_WIN8_PTP_BUTTONS, + .export_all_inputs = true }, { } };
@@ -758,7 +767,8 @@ static int mt_touch_input_mapping(struct hid_device *hdev, struct hid_input *hi, MT_STORE_FIELD(inrange_state); return 1; case HID_DG_CONFIDENCE: - if (cls->name == MT_CLS_WIN_8 && + if ((cls->name == MT_CLS_WIN_8 || + cls->name == MT_CLS_CIRQUE) && (field->application == HID_DG_TOUCHPAD || field->application == HID_DG_TOUCHSCREEN)) app->quirks |= MT_QUIRK_CONFIDENCE; @@ -1828,6 +1838,12 @@ static const struct hid_device_id mt_devices[] = { MT_USB_DEVICE(USB_VENDOR_ID_CHUNGHWAT, USB_DEVICE_ID_CHUNGHWAT_MULTITOUCH) },
+ /* Cirque devices */ + { .driver_data = MT_CLS_CIRQUE, + HID_DEVICE(BUS_I2C, HID_GROUP_MULTITOUCH_WIN_8, + I2C_VENDOR_ID_CIRQUE, + I2C_PRODUCT_ID_CIRQUE_121F) }, + /* CJTouch panels */ { .driver_data = MT_CLS_NSMU, MT_USB_DEVICE(USB_VENDOR_ID_CJTOUCH,