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X overflow, infinite loop [was: Problem/regression on ETPS elantech touchpad]



  Last upgrade (squeeze 6.01) messed up X server for me; it has to do with my previous ETPS touchpad issue, as far i understand, it has to do with synaptic_drv.so; with both KDE and Fluxbox. Repeatedly and frequently. Have to submit a bug? to xserver-xorg-input-synaptics? Logs / backtrace attached:
«...
[mi] EQ overflowing. The server is probably stuck in an infinite loop.

Backtrace:
0: /usr/bin/X (xorg_backtrace+0x28) [0x4acd58]
1: /usr/bin/X (mieqEnqueue+0x1f4) [0x4a2454]
2: /usr/bin/X (xf86PostButtonEventP+0xcf) [0x46459f]
3: /usr/bin/X (xf86PostButtonEvent+0xb9) [0x4646c9]
4: /usr/lib/xorg/modules/input/synaptics_drv.so (0x7fd8f8e70000+0x3a9d) [0x7fd8f8e73a9d]
5: /usr/lib/xorg/modules/input/synaptics_drv.so (0x7fd8f8e70000+0x5cb8) [0x7fd8f8e75cb8]
6: /usr/bin/X (0x400000+0x73987) [0x473987]
7: /usr/bin/X (0x400000+0x11c233) [0x51c233]
8: /lib/libpthread.so.0 (0x7fd8fd8b9000+0xef60) [0x7fd8fd8c7f60]
9: /lib/libc.so.6 (writev+0x1b) [0x7fd8fc466f0b]
10: /usr/bin/X (0x400000+0x58d8c) [0x458d8c]
11: /usr/bin/X (0x400000+0x572fd) [0x4572fd]
12: /usr/bin/X (FlushAllOutput+0x139) [0x457e39]
13: /usr/bin/X (0x400000+0x48b1d) [0x448b1d]
14: /usr/bin/X (0x400000+0x25c35) [0x425c35]
15: /lib/libc.so.6 (__libc_start_main+0xfd) [0x7fd8fc3bdc4d]
16: /usr/bin/X (0x400000+0x257e9) [0x4257e9]
[mi] EQ overflowing. The server is probably stuck in an infinite loop.

Backtrace:
0: /usr/bin/X (xorg_backtrace+0x28) [0x4acd58]
1: /usr/bin/X (mieqEnqueue+0x1f4) [0x4a2454]
2: /usr/bin/X (xf86PostButtonEventP+0xcf) [0x46459f]
3: /usr/bin/X (xf86PostButtonEvent+0xb9) [0x4646c9]
4: /usr/lib/xorg/modules/input/synaptics_drv.so (0x7fd8f8e70000+0x39e2) [0x7fd8f8e739e2]
5: /usr/lib/xorg/modules/input/synaptics_drv.so (0x7fd8f8e70000+0x5cb8) [0x7fd8f8e75cb8]
6: /usr/bin/X (0x400000+0x73987) [0x473987]
7: /usr/bin/X (0x400000+0x11c233) [0x51c233]
8: /lib/libpthread.so.0 (0x7fd8fd8b9000+0xef60) [0x7fd8fd8c7f60]
9: /lib/libc.so.6 (__select+0x13) [0x7fd8fc4678b3]
10: /usr/bin/X (WaitForSomething+0x1ba) [0x45ebfa]
11: /usr/bin/X (0x400000+0x489a2) [0x4489a2]
12: /usr/bin/X (0x400000+0x25c35) [0x425c35]
13: /lib/libc.so.6 (__libc_start_main+0xfd) [0x7fd8fc3bdc4d]
14: /usr/bin/X (0x400000+0x257e9) [0x4257e9]
[mi] EQ overflowing. The server is probably stuck in an infinite loop.

Backtrace:
0: /usr/bin/X (xorg_backtrace+0x28) [0x4acd58]
1: /usr/bin/X (mieqEnqueue+0x1f4) [0x4a2454]
2: /usr/bin/X (xf86PostButtonEventP+0xcf) [0x46459f]
3: /usr/bin/X (xf86PostButtonEvent+0xb9) [0x4646c9]
4: /usr/lib/xorg/modules/input/synaptics_drv.so (0x7fd8f8e70000+0x3a9d) [0x7fd8f8e73a9d]
5: /usr/lib/xorg/modules/input/synaptics_drv.so (0x7fd8f8e70000+0x5cb8) [0x7fd8f8e75cb8]
6: /usr/bin/X (0x400000+0x73987) [0x473987]
7: /usr/bin/X (0x400000+0x11c233) [0x51c233]
8: /lib/libpthread.so.0 (0x7fd8fd8b9000+0xef60) [0x7fd8fd8c7f60]
9: /usr/bin/X (0x400000+0xd1c23) [0x4d1c23]
10: /usr/bin/X (0x400000+0x48c84) [0x448c84]
11: /usr/bin/X (0x400000+0x25c35) [0x425c35]
12: /lib/libc.so.6 (__libc_start_main+0xfd) [0x7fd8fc3bdc4d]
13: /usr/bin/X (0x400000+0x257e9) [0x4257e9]
(II) AIGLX: Suspending AIGLX clients for VT switch
(II) Open ACPI successful (/var/run/acpid.socket)
(II) AIGLX: Resuming AIGLX clients after VT switch
(II) intel(0): EDID vendor "CMO", prod id 4103
(II) intel(0): Printing DDC gathered Modelines:
(II) intel(0): Modeline "1024x600"x0.0   54.20  1024 1133 1205 1386  600 607 620 652 -hsync -vsync (39.1 kHz)
(--) ETPS/2 Elantech Touchpad: touchpad found
(II) Power Button: Device reopened after 1 attempts.
»


---------- Forwarded message ----------
From: Pier Paolo <pierpaolo.franco@gmail.com>
Date: 2011/3/24
Subject: Re: Problem/regression on ETPS elantech touchpad
To: debian-user <debian-user@lists.debian.org>


2011/3/22 Pier Paolo <pierpaolo.franco@gmail.com>
  Hi all,
after last upgrade of Squeeze i am in severe troubles with my touchpad:

cat /proc/bus/input/devices | grep ETPS
N: Name="ETPS/2 Elantech Touchpad"

Without any xorg.conf.d the problem remains (no tap, unusable at all twofinger-scroll); i searched througth debian's bugs and google, but no results. It seems X reject the actual mouse1 ETPS and use a (nonexixtent?) mouse0 macintosh...

/proc/bus/input/devices:
67-I: Bus=0011 Vendor=0002 Product=000e Version=0000
68:N: Name="ETPS/2 Elantech Touchpad"
69-P: Phys=isa0060/serio1/input0
70-S: Sysfs=/devices/platform/i8042/serio1/input/input7
71-U: Uniq=
72-H: Handlers=mouse1 event7 
73-B: EV=b
74-B: KEY=6420 70000 0 0 0 0
75-B: ABS=f0003

That's the relevant xorg.log:
(II) config/udev: Adding input device ETPS/2 Elantech Touchpad (/dev/input/event7)
(**) ETPS/2 Elantech Touchpad: Applying InputClass "evdev touchpad catchall"
(**) ETPS/2 Elantech Touchpad: Applying InputClass "touchpad catchall"
(II) LoadModule: "synaptics"
(II) Loading /usr/lib/xorg/modules/input/synaptics_drv.so
(II) Module synaptics: vendor="X.Org Foundation"
        compiled for 1.7.6.901, module version = 1.2.2
        Module class: X.Org XInput Driver
        ABI class: X.Org XInput driver, version 7.0
(II) Synaptics touchpad driver version 1.2.2
(**) Option "Device" "/dev/input/event7"
(II) ETPS/2 Elantech Touchpad: x-axis range 8 - 1144
(II) ETPS/2 Elantech Touchpad: y-axis range 8 - 760
(II) ETPS/2 Elantech Touchpad: device does not report pressure, will use touch data.
(II) ETPS/2 Elantech Touchpad: finger width range 0 - 0
(II) ETPS/2 Elantech Touchpad: buttons: left right middle double triple
(--) ETPS/2 Elantech Touchpad: touchpad found
(**) ETPS/2 Elantech Touchpad: always reports core events
(II) XINPUT: Adding extended input device "ETPS/2 Elantech Touchpad" (type: TOUCHPAD)
(**) ETPS/2 Elantech Touchpad: (accel) keeping acceleration scheme 1
(**) ETPS/2 Elantech Touchpad: (accel) acceleration profile 0
(**) ETPS/2 Elantech Touchpad: (accel) acceleration factor: 2.000
(**) ETPS/2 Elantech Touchpad: (accel) acceleration threshold: 4
(--) ETPS/2 Elantech Touchpad: touchpad found
(II) config/udev: Adding input device ETPS/2 Elantech Touchpad (/dev/input/mouse1)
(**) ETPS/2 Elantech Touchpad: Applying InputClass "touchpad catchall"
(II) Synaptics touchpad driver version 1.2.2
ETPS/2 Elantech Touchpad no synaptics event device found
(**) Option "Device" "/dev/input/mouse1"
Query no Synaptics: 6003C8
(--) ETPS/2 Elantech Touchpad: no supported touchpad found
(EE) ETPS/2 Elantech Touchpad Unable to query/initialize Synaptics hardware.
(EE) PreInit failed for input device "ETPS/2 Elantech Touchpad"
(II) UnloadModule: "synaptics"
...
(II) config/udev: Adding input device Macintosh mouse button emulation (/dev/input/event0)
(**) Macintosh mouse button emulation: Applying InputClass "evdev pointer catchall"
(**) Macintosh mouse button emulation: always reports core events
(**) Macintosh mouse button emulation: Device: "/dev/input/event0"
(II) Macintosh mouse button emulation: Found 3 mouse buttons
(II) Macintosh mouse button emulation: Found relative axes
(II) Macintosh mouse button emulation: Found x and y relative axes
(II) Macintosh mouse button emulation: Configuring as mouse
(**) Macintosh mouse button emulation: YAxisMapping: buttons 4 and 5
(**) Macintosh mouse button emulation: EmulateWheelButton: 4, EmulateWheelInertia: 10, EmulateWheelTimeout: 200
(II) XINPUT: Adding extended input device "Macintosh mouse button emulation" (type: MOUSE)
(II) Macintosh mouse button emulation: initialized for relative axes.
(II) config/udev: Adding input device Macintosh mouse button emulation (/dev/input/mouse0)
(II) No input driver/identifier specified (ignoring)
...
(--) ETPS/2 Elantech Touchpad: touchpad found
...
(--) ETPS/2 Elantech Touchpad: touchpad found
...
 
Above all I can't find an usable (not "confortable" or "more usable"!) set of scrolling options... Since this upgrade the touchpad woked out of the box, and now I created a

/etc/X11/xorg.conf.d/20-touchpad.conf:
Section "InputClass"
        Identifier      "Touchpad"                      # required
        MatchIsTouchpad "yes"                           # required
        Driver          "synaptics"                     # required
        Option          "SHMConfig"             "true"
        Option          "MinSpeed"              "0.5"
        Option          "MaxSpeed"              "1.0"
        Option          "AccelFactor"           "0.075"
        Option          "TapButton1"            "1"
        Option          "TapButton2"            "2"     # multitouch
        Option          "TapButton3"            "3"     # multitouch
        Option          "VertTwoFingerScroll"   "true"     # multitouch
        Option          "HorizTwoFingerScroll"  "true"     # multitouch
        Option          "VertScrollDelta"       "70"
        Option          "HorizScrollDelta"      "70"
        Option          "UpDownScrolling"       "false"
        Option          "LeftRightScrolling"    "false"
#        Option          "VertEdgeScroll"        "1"
#        Option          "CoastingSpeed"         "0"
#        Option          "CornerCoasting"        "true"
#        Option          "CircularScrolling"     "true"
#       Option           "CircScrollDelta"      "30"
#        Option          "CircScrollTrigger"     "1"
#        Option          "EdgeMotionUseAlways"   "0"
#        Option          "LBCornerButton"        "0"     # set as 8 for browser "back" btn
#        Option          "RBCornerButton"        "0"     # set as 9 browser "forward" btn
EndSection

here the last version.

In Xorg log there is indeed something veryvery strange:
(II) config/udev: Adding input device ETPS/2 Elantech Touchpad (/dev/input/event7)
(**) ETPS/2 Elantech Touchpad: Applying InputClass "evdev touchpad catchall"
(**) ETPS/2 Elantech Touchpad: Applying InputClass "touchpad catchall"
(**) ETPS/2 Elantech Touchpad: Applying InputClass "Touchpad"
(II) ETPS/2 Elantech Touchpad: x-axis range 8 - 1144
(II) ETPS/2 Elantech Touchpad: y-axis range 8 - 760
(II) ETPS/2 Elantech Touchpad: device does not report pressure, will use touch data.
(II) ETPS/2 Elantech Touchpad: finger width range 0 - 0
(II) ETPS/2 Elantech Touchpad: buttons: left right middle double triple
(--) ETPS/2 Elantech Touchpad: touchpad found
(**) ETPS/2 Elantech Touchpad: always reports core events
(II) XINPUT: Adding extended input device "ETPS/2 Elantech Touchpad" (type: TOUCHPAD)
(**) ETPS/2 Elantech Touchpad: (accel) keeping acceleration scheme 1
(**) ETPS/2 Elantech Touchpad: (accel) acceleration profile 0
(**) ETPS/2 Elantech Touchpad: (accel) acceleration factor: 2.000
(**) ETPS/2 Elantech Touchpad: (accel) acceleration threshold: 4
(--) ETPS/2 Elantech Touchpad: touchpad found
(II) config/udev: Adding input device ETPS/2 Elantech Touchpad (/dev/input/mouse1)
(**) ETPS/2 Elantech Touchpad: Applying InputClass "touchpad catchall"
(**) ETPS/2 Elantech Touchpad: Applying InputClass "Touchpad"
ETPS/2 Elantech Touchpad no synaptics event device found
(--) ETPS/2 Elantech Touchpad: no supported touchpad found
(EE) ETPS/2 Elantech Touchpad Unable to query/initialize Synaptics hardware.
(EE) PreInit failed for input device "ETPS/2 Elantech Touchpad"
(--) ETPS/2 Elantech Touchpad: touchpad found
(--) ETPS/2 Elantech Touchpad: touchpad found

actually i'm referring to the EE lines...

Someone having the same problem out there?

Glad if someone could help 
Thx, Pier Paolo.



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