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losing touchpad scroll and taps after susped
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kos
n00b
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Joined: 28 May 2003
Posts: 70
Location: Mountain View, CA

PostPosted: Wed Mar 04, 2020 12:25 am    Post subject: losing touchpad scroll and taps after susped Reply with quote

I'm sometimes losing touchpad scroll and tap-to-click after suspend/resume.
This is on Dell Precision 9540, Xorg, libinput, i2c_hid driver, 5.5.7 kernel
Scrolling and taps stop working in some of the windows first, then eventually it propagates to all windows.
"libinput debug-events" still shows all the events correctly when this happens, but "xev" does not.
Reloading i2c modules helps to some extent, but only for a while. A real fix is to restart X11.
How to debug further? Where should I report it?

Code:

~ » xinput list
⎡ Virtual core pointer                          id=2    [master pointer  (3)]
⎜   ↳ Virtual core XTEST pointer                id=4    [slave  pointer  (2)]
⎜   ↳ DELL0926:00 044E:1220 Mouse               id=13   [slave  pointer  (2)]
⎜   ↳ DELL0926:00 044E:1220 Touchpad            id=15   [slave  pointer  (2)]  <<-- this one
⎣ Virtual core keyboard                         id=3    [master keyboard (2)]
    ↳ Virtual core XTEST keyboard               id=5    [slave  keyboard (3)]
    ↳ Power Button                              id=6    [slave  keyboard (3)]
    ↳ Video Bus                                 id=7    [slave  keyboard (3)]
    ↳ Power Button                              id=8    [slave  keyboard (3)]
    ↳ Sleep Button                              id=9    [slave  keyboard (3)]
    ↳ Integrated_Webcam_HD: Integrate           id=10   [slave  keyboard (3)]
    ↳ Integrated_Webcam_HD: Integrate           id=11   [slave  keyboard (3)]
    ↳ Intel HID events                          id=16   [slave  keyboard (3)]
    ↳ Intel HID 5 button array                  id=17   [slave  keyboard (3)]
    ↳ Dell WMI hotkeys                          id=18   [slave  keyboard (3)]
    ↳ AT Translated Set 2 keyboard              id=19   [slave  keyboard (3)]
    ↳ Tempotec SONATA HD Audio                  id=12   [slave  keyboard (3)]
    ↳ DELL0926:00 044E:1220 UNKNOWN             id=14   [slave  keyboard (3)]

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/KoS
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