[Wayland-bugs] [Bug 104990] XPS13 L322X touchpad laggy

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=104990

Sean Lanigan  changed:

   What|Removed |Added

 Attachment #138781|0   |1
is obsolete||
   Assignee|wayland-bugs@lists.freedesk |developm...@lano.id.au
   |top.org |
 Status|RESOLVED|REOPENED
 Resolution|FIXED   |---

--- Comment #24 from Sean Lanigan  ---
Created attachment 138840
  --> https://bugs.freedesktop.org/attachment.cgi?id=138840=edit
Dell XPS13 L322X touchpad quirks (updated to match more variants)

As requested, I've modified my patch just slightly so that it matches more
L322X machines. I've tested it and it still works on my machine.

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[Wayland-bugs] [Bug 104990] XPS13 L322X touchpad laggy

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https://bugs.freedesktop.org/show_bug.cgi?id=104990

--- Comment #23 from VF  ---
@Sean
I could not have your tweak to work on my own laptop. I had to change it this
way so that it matches:

+libinput:name:*CyPS/2 Cypress Trackpad:dmi:*svnDell*:pnXPSL322X*
+ LIBINPUT_ATTR_PRESSURE_RANGE=30:20
+ LIBINPUT_ATTR_PALM_PRESSURE_THRESHOLD=254
+
 ##
 # Elantech
 ##
 (only removed the "DellSystem" substring in :pn)

Maybe the dmi id was changed in my bios (latest A10 IIRC) 

cat /sys/class/dmi/id/modalias
dmi:bvnDellInc.:bvrA10:bd08/28/2013:svnDellInc.:pnXPSL322X:pvr:rvnDellInc.:rn0PJHXN:rvrA00:cvnDellInc.:ct8:cvr0.1:

  Maybe :pn*XPS*L322X* would be wide & precise enough if Dell guys change this
in a new bios release, e.g. DellSystemXPS[13]L322X.
Or lighter :pn*L322X*

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[Wayland-bugs] [Bug 104990] XPS13 L322X touchpad laggy

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https://bugs.freedesktop.org/show_bug.cgi?id=104990

--- Comment #22 from VF  ---
Thank you very much Sean (and freedesktop team), you were faster than I could :
I've finished yesterday with fighting to have a persistent live usb key to work
on this issue :)

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[Wayland-bugs] [Bug 104990] XPS13 L322X touchpad laggy

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=104990

Peter Hutterer  changed:

   What|Removed |Added

 Status|NEEDINFO|RESOLVED
 Resolution|--- |FIXED

--- Comment #21 from Peter Hutterer  ---
Thanks, pushed

commit 69fe467fbacbc8376d548c335c79cca71b606b07
Author: Sean Lanigan <>
Date:   Thu Apr 12 21:17:00 2018 +1000

 Add Dell XPS13 L322X touchpad quirks

https://wayland.freedesktop.org/libinput/doc/latest/reporting_bugs.html#fixed_bugs

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[Wayland-bugs] [Bug 104990] XPS13 L322X touchpad laggy

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=104990

Sean Lanigan  changed:

   What|Removed |Added

 Attachment #138752|0   |1
is obsolete||

--- Comment #20 from Sean Lanigan  ---
Created attachment 138781
  --> https://bugs.freedesktop.org/attachment.cgi?id=138781=edit
Dell XPS13 L322X touchpad quirks

Sure, I think this should do it - this would be first patch submitted, let me
know if it needs to be changed

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[Wayland-bugs] [Bug 104990] XPS13 L322X touchpad laggy

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https://bugs.freedesktop.org/show_bug.cgi?id=104990

--- Comment #19 from Peter Hutterer  ---
Looks correct, thanks. Can you re-attach this as signed-off, git-formatted
patch? This way I can directly apply it and you get all the credit and glory
that comes with that ;)

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[Wayland-bugs] [Bug 104990] XPS13 L322X touchpad laggy

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https://bugs.freedesktop.org/show_bug.cgi?id=104990

--- Comment #17 from Peter Hutterer  ---
It's a so-called schmitt trigger, pressure needs to go above "down" to be
detected as touch and below "up" to be released again. down > up to make the
touch more resilient.

libinput:name:*CyPS/2 Cypress Trackpad:dmi:*svnDell:*pnXPSL322X*
 LIBINPUT_ATTR_PRESSURE_RANGE=105:60
 LIBINPUT_ATTR_PALM_PRESSURE_THRESHOLD=230

Something like this should work. Check /sys/class/dmi/id/modalias and adjust
the dmi bit accordingly, make sure the svn and pn bits match.
https://wayland.freedesktop.org/libinput/doc/latest/faq.html#faq_hwdb_changes

I'll need you to figure out that hwdb match though, I can't test this locally
without the same machine so anything I'd merge is prone to be buggy.

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[Wayland-bugs] [Bug 104990] XPS13 L322X touchpad laggy

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https://bugs.freedesktop.org/show_bug.cgi?id=104990

--- Comment #15 from Sean Lanigan  ---
I also have a Dell XPS13 L322X, I've followed the steps linked to and have
found that using 'libinput measure touchpad-pressure --touch-thresholds=105:60
--palm-threshold=230' seemed to work well.

I was not able to format it into the hwdb file, however, so couldn't actually
test it on my machine.

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[Wayland-bugs] [Bug 104990] XPS13 L322X touchpad laggy

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https://bugs.freedesktop.org/show_bug.cgi?id=104990

Peter Hutterer  changed:

   What|Removed |Added

 Status|NEW |NEEDINFO

--- Comment #14 from Peter Hutterer  ---
> I think it's because of "down palm" that the mouse freezes.

indeed, that would cause the touch to be ignored.

This is an iterative process and I need you to play around with the touch
thresholds until you come up with one that works reliably, both for finger
detection and palm detection. Please see
https://wayland.freedesktop.org/libinput/doc/latest/touchpad_pressure.html#touchpad_pressure_hwdb
for the details.

Ideally, the pressure thresholds should reliably detect touches but ignore
accidental light brushes.

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[Wayland-bugs] [Bug 104990] XPS13 L322X touchpad laggy

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https://bugs.freedesktop.org/show_bug.cgi?id=104990

--- Comment #13 from VF  ---
Here my own measures:
ubuntu@ubuntu:~$ sudo libinput measure touch-size
Using CyPS/2 Cypress Trackpad: /dev/input/event6

Error: device does not have ABS_MT_TOUCH_MAJOR
ubuntu@ubuntu:~$ sudo libinput measure touchpad-pressure
Using CyPS/2 Cypress Trackpad: /dev/input/event6

Ready for recording data.
Pressure range used: 25:30
Palm pressure range used: 130
Place a single finger on the touchpad to measure pressure values.
Ctrl+C to exit

Sequence 145 pressure: min:  59 max: 131 avg: 111 median: 122 tags: down palm
Sequence 146 pressure: min:  69 max: 134 avg: 122 median: 125 tags: down palm
Sequence 147 pressure: min:  56 max:  90 avg:  78 median:  88 tags: down
Sequence 148 pressure: min:  31 max: 113 avg:  90 median:  99 tags: down
Sequence 149 pressure: min:  42 max: 120 avg:  94 median: 103 tags: down
Sequence 150 pressure: min:  44 max: 119 avg:  98 median: 109 tags: down
Sequence 151 pressure: min:  76 max: 123 avg: 107 median: 114 tags: down
Sequence 152 pressure: min:  48 max: 119 avg:  95 median: 106 tags: down
Sequence 153 pressure: min:  60 max: 107 avg:  90 median:  98 tags: down
Sequence 154 pressure: min:  77 max: 100 avg:  88 median:  94 tags: down
Sequence 155 pressure: min:  66 max:  94 avg:  83 median:  93 tags: down
Sequence 156 pressure: min:  39 max:  76 avg:  63 median:  70 tags: down
Sequence 157 pressure: min:  39 max: 108 avg:  87 median:  97 tags: down
Sequence 158 pressure: min:  29 max:  89 avg:  69 median:  84 tags: down
Sequence 159 pressure: min:  31 max:  91 avg:  69 median:  81 tags: down
Sequence 160 pressure: min:  10 max:  88 avg:  58 median:  62 tags: down
Sequence 161 pressure: min:  31 max:  87 avg:  66 median:  71 tags: down
Sequence 162 pressure: min:  23 max:  98 avg:  71 median:  80 tags: down
Sequence 163 pressure: min:  52 max: 102 avg:  81 median:  86 tags: down
Sequence 164 pressure: min:  37 max:  80 avg:  61 median:  65 tags: down
Sequence 165 pressure: min:  34 max:  87 avg:  68 median:  77 tags: down
Sequence 166 pressure: min:  42 max:  91 avg:  74 median:  78 tags: down
Sequence 167 pressure: min:  29 max:  97 avg:  76 median:  88 tags: down
Sequence 168 pressure: min:  34 max:  96 avg:  77 median:  88 tags: down
Sequence 169 pressure: min:  36 max:  90 avg:  72 median:  76 tags: down
Sequence 170 pressure: min:  53 max:  93 avg:  79 median:  87 tags: down
Sequence 171 pressure: min:  70 max: 118 avg: 100 median: 108 tags: down
Sequence 172 pressure: min:  40 max:  90 avg:  73 median:  80 tags: down
Sequence 173 pressure: min:  40 max:  94 avg:  76 median:  81 tags: down
Sequence 174 pressure: min:  42 max:  97 avg:  78 median:  86 tags: down
Sequence 175 pressure: min:  31 max:  96 avg:  73 median:  82 tags: down
Sequence 176 pressure: min:  36 max:  94 avg:  70 median:  78 tags: down
Sequence 177 pressure: min:  41 max:  73 avg:  61 median:  66 tags: down
Sequence 178 pressure: min:  10 max:  10 avg:  10 median:  10 tags:
Sequence 179 pressure: min:  25 max:  56 avg:  44 median:  50 tags: down
Sequence 180 pressure: min:  28 max:  69 avg:  54 median:  56 tags: down
Sequence 181 pressure: min:  26 max:  78 avg:  61 median:  72 tags: down
Sequence 182 pressure: min:  41 max:  96 avg:  77 median:  79 tags: down
Sequence 183 pressure: min:  43 max: 121 avg:  97 median: 104 tags: down
Sequence 184 pressure: min:  39 max: 126 avg:  97 median: 111 tags: down
Sequence 185 pressure: min:  49 max: 125 avg:  99 median: 113 tags: down
Sequence 186 pressure: min:  53 max: 121 avg:  99 median: 106 tags: down
Sequence 187 pressure: min:  32 max: 107 avg:  81 median:  95 tags: down
Sequence 188 pressure: min:  44 max:  85 avg:  68 median:  72 tags: down
Sequence 189 pressure: min:  41 max:  67 avg:  58 median:  63 tags: down
Sequence 190 pressure: min:  20 max: 106 avg:  80 median:  96 tags: down
Sequence 191 pressure: min:  47 max: 115 avg:  90 median:  97 tags: down
Sequence 192 pressure: min:  56 max: 109 avg:  90 median:  93 tags: down
Sequence 193 pressure: min:  50 max: 110 avg:  89 median:  92 tags: down
Sequence 194 pressure: min:  70 max: 104 avg:  91 median: 101 tags: down
Sequence 195 pressure: min:  69 max: 131 avg: 106 median: 118 tags: down palm
Sequence 196 pressure: min:  65 max: 127 avg: 103 median: 116 tags: down
Sequence 197 pressure: min:  87 max: 144 avg: 122 median: 136 tags: down palm
Sequence 198 pressure: min:  67 max: 149 avg: 121 median: 127 tags: down palm
Sequence 199 pressure: min:  54 max: 146 avg: 111 median: 112 tags: down palm
Sequence 200 pressure: min:  58 max: 128 avg: 104 median: 109 tags: down
Sequence 201 pressure: min:  54 max: 183 avg: 142 median: 152 tags: down palm
Sequence 202 pressure: min:  59 max: 168 avg: 138 median: 148 tags: down palm
Sequence 203 pressure: min:  56 max: 164 avg: 134 median: 147 tags: down palm
Sequence 204 pressure: min:  42 max: 106 avg:  86 median:  99 tags: down
Sequence 205 pressure: min:  52 max: 

[Wayland-bugs] [Bug 104990] XPS13 L322X touchpad laggy

[bugzilla-daemon]

https://bugs.freedesktop.org/show_bug.cgi?id=104990

Ekinoks  changed:

   What|Removed |Added

 Status|NEEDINFO|NEW

--- Comment #12 from Ekinoks  ---
Hello,

I have the same probleme here with my XPS L322X.
Where is the result of touchpad-pressure:

ekinoks@XPS-L322X: sudo libinput measure touchpad-pressure
Using CyPS/2 Cypress Trackpad: /dev/input/event6

Ready for recoding data.
Pressure range used: 25:30
Palm pressure range used: 130
Place a single finger on the touch to measure pressure values.
Ctrl+C to exit

Sequence 2397 pressure: min:  56 max: 159 avg: 101 median 100 tags: down palm
Sequence 2398 pressure: min:  57 max: 154 avg: 111 median 116 tags: down palm
Sequence 2399 pressure: min:  55 max: 146 avg: 101 median 101 tags: down palm
Sequence 2400 pressure: min:  18 max: 117 avg:  72 median  71 tags: down
Sequence 2401 pressure: min:  39 max: 130 avg: 102 median 102 tags: down


I think it's because of "down palm" that the mouse freezes.

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[Wayland-bugs] [Bug 104990] XPS13 L322X touchpad laggy

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https://bugs.freedesktop.org/show_bug.cgi?id=104990

--- Comment #10 from VF  ---
Please ignore last 2 sentences: I can do selection with touchpad, with
double-tap with very ultra-light light pressure : it seem this device has
hidden capabilities, pressure dependant, that interfere with simple move
feature.

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[Wayland-bugs] [Bug 104990] XPS13 L322X touchpad laggy

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https://bugs.freedesktop.org/show_bug.cgi?id=104990

--- Comment #9 from VF  ---
Hi. I did the test with latest 18.04 daily ubuntu with libinput10 1.10.3.
After reading the post of Silvio here
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1746740/comments/25 I feel
I have to reword "laggy": "The sensitivity was WAY too high so the cursor could
only be moved with extremely low pressure" he says, far better than I did.
Usual pressure seems to lock the cursor in place after a very short movement.
I'd add I didn't reach to start a rectangle selection/capture with the
touchpad, what I can usually do with quick double-tap to set the 1srt corner
then move the cursor to the opposite corner where I want. I'll give another try
within minutes and come back here only to say I succeeded.

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[Wayland-bugs] [Bug 104990] XPS13 L322X touchpad laggy

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https://bugs.freedesktop.org/show_bug.cgi?id=104990

Peter Hutterer  changed:

   What|Removed |Added

 Status|NEW |NEEDINFO

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[Wayland-bugs] [Bug 104990] XPS13 L322X touchpad laggy

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https://bugs.freedesktop.org/show_bug.cgi?id=104990

Peter Hutterer  changed:

   What|Removed |Added

 CC||peter.hutte...@who-t.net

--- Comment #8 from Peter Hutterer  ---
Can you try with 1.10.3 please, this has had some improvements for the
hysteresis that should make the device feel more responsive. If it's not fixed,
please specify exactly what 'laggy' means in this context, thanks.

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[Wayland-bugs] [Bug 104990] XPS13 L322X touchpad laggy

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https://bugs.freedesktop.org/show_bug.cgi?id=104990

--- Comment #7 from VF  ---
I found these additional information in Dell XP13-L322X specifications : 

Touchpad
Resolution: 250 cpi
Size:
Width: 96,8 mm (3,81")
Heitgh: 58,8 mm (2,31")


Please notice that I was not able to identify the device on Cypress web site,
and that resolution information supplied by Dell for the L322X is very
different than the one they give for the next very closely marketed model
(XPS13-9333), which is:
Touchpad
Resolution:
Horizontal: 1275 dpi
Vertical: 1656 dpi
Size (same as L322X):
Width: 96,8 mm (3,81")
Heitgh: 58,8 mm (2,31")

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[Wayland-bugs] [Bug 104990] XPS13 L322X touchpad laggy

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https://bugs.freedesktop.org/show_bug.cgi?id=104990

Daniel van Vugt  changed:

   What|Removed |Added

 Status|NEEDINFO|NEW

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[Wayland-bugs] [Bug 104990] XPS13 L322X touchpad laggy

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--- Comment #6 from VF  ---
[EDIT] Above log if from K4.4.0-112-generic (ubuntu 14.04.5)

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--- Comment #5 from VF  ---
[EDIT] Above log if from K4.4.0-generic (ubuntu 14.04.5)

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[Wayland-bugs] [Bug 104990] XPS13 L322X touchpad laggy

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--- Comment #4 from VF  ---
dmesg|grep -i "ps/2"
[0.805591] i8042: PNP: PS/2 Controller [PNP0303:PS2K,PNP0f13:PS2M] at
0x60,0x64 irq 1,12
[0.813505] mousedev: PS/2 mouse device common for all mice
[2.008952] input: CyPS/2 Cypress Trackpad as
/devices/platform/i8042/serio1/input/input6

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[Wayland-bugs] [Bug 104990] XPS13 L322X touchpad laggy

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--- Comment #3 from VF  ---
Yes
dpkg -s libinput10 | grep Version
Version: 1.9.4-2ubuntu1

I could not select this version in the droplist above, and also I'm not sure it
is Wayland as I read ubuntu 18.04 defaults to Xorg

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[Wayland-bugs] [Bug 104990] XPS13 L322X touchpad laggy

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Daniel van Vugt  changed:

   What|Removed |Added

 Status|NEW |NEEDINFO

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[Wayland-bugs] [Bug 104990] XPS13 L322X touchpad laggy

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Daniel van Vugt  changed:

   What|Removed |Added

Summary|touchpad laggy  |XPS13 L322X touchpad laggy

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