Bug#830487: gdm3: Non emulating touch event

[Alexandre]

Package: gdm3
Version: 3.20.1-1
Severity: important

Dear Maintainer,

Sometime, randomly my trackpad doesn't work properly and i have this error in
sys log :

Jul  8 15:09:10 debian /usr/lib/gdm3/gdm-x-session[3134]: (EE) BUG: triggered
'if (!(event->device_event.flags & (1 << 5)))'
Jul  8 15:09:10 debian /usr/lib/gdm3/gdm-x-session[3134]: (EE) BUG:
../../dix/touch.c:644 in TouchConvertToPointerEvent()
Jul  8 15:09:10 debian /usr/lib/gdm3/gdm-x-session[3134]: (EE) Non-emulating
touch event
Jul  8 15:09:10 debian /usr/lib/gdm3/gdm-x-session[3134]: (EE)
Jul  8 15:09:10 debian /usr/lib/gdm3/gdm-x-session[3134]: (EE) Backtrace:
Jul  8 15:09:10 debian /usr/lib/gdm3/gdm-x-session[3134]: (EE) 0:
/usr/lib/xorg/Xorg (xorg_backtrace+0x4e) [0x560d6edc8f6e]
Jul  8 15:09:10 debian /usr/lib/gdm3/gdm-x-session[3134]: (EE) 1:
/usr/lib/xorg/Xorg (0x560d6ec17000+0x7de1b) [0x560d6ec94e1b]
Jul  8 15:09:10 debian /usr/lib/gdm3/gdm-x-session[3134]: (EE) 2:
/usr/lib/xorg/Xorg (0x560d6ec17000+0x13f975) [0x560d6ed56975]
Jul  8 15:09:10 debian /usr/lib/gdm3/gdm-x-session[3134]: (EE) 3:
/usr/lib/xorg/Xorg (0x560d6ec17000+0x13f496) [0x560d6ed56496]
Jul  8 15:09:10 debian /usr/lib/gdm3/gdm-x-session[3134]: (EE) 4:
/usr/lib/xorg/Xorg (0x560d6ec17000+0x142725) [0x560d6ed59725]
Jul  8 15:09:10 debian /usr/lib/gdm3/gdm-x-session[3134]: (EE) 5:
/usr/lib/xorg/Xorg (0x560d6ec17000+0x1650b2) [0x560d6ed7c0b2]
Jul  8 15:09:10 debian /usr/lib/gdm3/gdm-x-session[3134]: (EE) 6:
/usr/lib/xorg/Xorg (0x560d6ec17000+0x193e32) [0x560d6edaae32]
Jul  8 15:09:10 debian /usr/lib/gdm3/gdm-x-session[3134]: (EE) 7:
/usr/lib/xorg/Xorg (mieqProcessInputEvents+0x14f) [0x560d6edab01f]
Jul  8 15:09:10 debian /usr/lib/gdm3/gdm-x-session[3134]: (EE) 8:
/usr/lib/xorg/Xorg (ProcessInputEvents+0x19) [0x560d6ecab349]
Jul  8 15:09:10 debian /usr/lib/gdm3/gdm-x-session[3134]: (EE) 9:
/usr/lib/xorg/Xorg (0x560d6ec17000+0x53a0f) [0x560d6ec6aa0f]
Jul  8 15:09:10 debian /usr/lib/gdm3/gdm-x-session[3134]: (EE) 10:
/usr/lib/xorg/Xorg (0x560d6ec17000+0x57c03) [0x560d6ec6ec03]
Jul  8 15:09:10 debian /usr/lib/gdm3/gdm-x-session[3134]: (EE) 11: /lib/x86_64
-linux-gnu/libc.so.6 (__libc_start_main+0xf0) [0x7f69bdd6e5f0]
Jul  8 15:09:10 debian /usr/lib/gdm3/gdm-x-session[3134]: (EE) 12:
/usr/lib/xorg/Xorg (_start+0x29) [0x560d6ec58f99]
Jul  8 15:09:10 debian /usr/lib/gdm3/gdm-x-session[3134]: (EE)
Jul  8 15:09:10 debian /usr/lib/gdm3/gdm-x-session[3134]: (EE) BUG: triggered
'if (!(event->device_event.flags & (1 << 5)))'
Jul  8 15:09:10 debian /usr/lib/gdm3/gdm-x-session[3134]: (EE) BUG:
../../dix/touch.c:644 in TouchConvertToPointerEvent()
Jul  8 15:09:10 debian /usr/lib/gdm3/gdm-x-session[3134]: (EE) Non-emulating
touch event



-- System Information:
Debian Release: stretch/sid
  APT prefers testing
  APT policy: (500, 'testing'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 4.7.0-rc4-amd64 (SMP w/4 CPU cores)
Locale: LANG=fr_FR.UTF-8, LC_CTYPE=fr_FR.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/dash
Init: systemd (via /run/systemd/system)

Versions of packages gdm3 depends on:
ii  accountsservice                       0.6.40-3
ii  adduser                               3.115
ii  dconf-cli                             0.26.0-1
ii  dconf-gsettings-backend               0.26.0-1
ii  debconf [debconf-2.0]                 1.5.59
ii  gir1.2-gdm-1.0                        3.20.1-1
ii  gnome-session [x-session-manager]     3.20.1-4
ii  gnome-session-bin                     3.20.1-4
ii  gnome-settings-daemon                 3.20.1-2
ii  gnome-shell                           3.20.3-1
ii  gnome-terminal [x-terminal-emulator]  3.20.2-1
ii  gsettings-desktop-schemas             3.20.0-3
ii  guake [x-terminal-emulator]           0.8.5-1
ii  libaccountsservice0                   0.6.40-3
ii  libaudit1                             1:2.5.2-1
ii  libc6                                 2.22-13
ii  libcanberra-gtk3-0                    0.30-3
ii  libcanberra0                          0.30-3
ii  libgdk-pixbuf2.0-0                    2.34.0-1
ii  libgdm1                               3.20.1-1
ii  libglib2.0-0                          2.48.1-1
ii  libglib2.0-bin                        2.48.1-1
ii  libgtk-3-0                            3.20.6-2
ii  libpam-modules                        1.1.8-3.3
ii  libpam-runtime                        1.1.8-3.3
ii  libpam-systemd                        230-5
ii  libpam0g                              1.1.8-3.3
ii  librsvg2-common                       2.40.16-1
ii  libselinux1                           2.5-3
ii  libsystemd0                           230-5
ii  libwrap0                              7.6.q-25
ii  libx11-6                              2:1.6.3-1
ii  libxau6                               1:1.0.8-1
ii  libxdmcp6                             1:1.1.2-1.1
ii  lsb-base                              9.20160629
ii  metacity [x-window-manager]           1:3.20.1.1-1
ii  mutter [x-window-manager]             3.20.3-2
ii  policykit-1                           0.105-15
ii  ucf                                   3.0036
ii  x11-common                            1:7.7+15
ii  x11-xserver-utils                     7.7+7
ii  xterm [x-terminal-emulator]           325-1

Versions of packages gdm3 recommends:
ii  at-spi2-core    2.20.2-1
ii  desktop-base    8.0.2
ii  x11-xkb-utils   7.7+3
ii  xserver-xephyr  2:1.18.3-1
ii  xserver-xorg    1:7.7+15
ii  zenity          3.20.0-1

Versions of packages gdm3 suggests:
ii  gnome-orca            3.20.2-1
ii  libpam-gnome-keyring  3.20.0-1

-- debconf information:
  gdm3/daemon_name: /usr/sbin/gdm3
* shared/default-x-display-manager: gdm3