Bug#818471: xserver-xorg-input-synaptics: syndaemon not disabling touch pad
Package: xserver-xorg-input-synaptics
Version: 1.9.1-1
Followup-For: Bug #818471
Dear Maintainer,
I am experiencing similar problem. The core of the issue is that some laptops
have separated touchpad-like driver for the touchpad itself and for the
buttons. As a result, two touchpad devices can be found in xinput -list. In my
case these are:
SYNA3071:00 06CB:82F1 Touchpad
SynPS/2 Synaptics TouchPad
The synclient and syndaemon programs are taking blindly the first touchpad-like
device they find, which is unfortunatelly the generic SynPS/2 one. A possible
dirty workaround is to disable 'psmouse' module, which makes that SynPS/2
touchpad to disappear, but at the same time the buttons next to the touchpad
stop (partly) working.
Attached is a patch to the synclient and syndaemon code, which makes sure the
SynPS/2 device is used only when there is no other touchpad-like device found.
At the same time a new option "-n device" is added so that user can select (by
name) which device is to be used by the synclient and syndaemon programs.
Feel free to alter the patch as/if needed.
Best regards,
Pavel
--- old/tools/synclient.c
+++ new/tools/synclient.c
@@ -30,6 +30,7 @@
#include
#include
+#include
#include
#include
#include
@@ -74,6 +75,8 @@
int prop_offset;/* Offset inside property */
};
+static const char *dev_substring;
+
static struct Parameter params[] = {
{"LeftEdge", PT_INT,0, 1, SYNAPTICS_PROP_EDGES,
32, 0},
{"RightEdge", PT_INT,0, 1, SYNAPTICS_PROP_EDGES,
32, 1},
@@ -245,12 +248,27 @@
return dpy;
}
+static void
+dp_get_device_unwind(Atom ** properties, XDevice ** dev, int error, Display *
dpy, XDeviceInfo * info)
+{
+if ( *properties ) {
+ XFree(*properties);
+ *properties = NULL;
+}
+if ( info ) XFreeDeviceList(info);
+if ( error && (*dev) ) {
+ XCloseDevice(dpy, *dev);
+ *dev = NULL;
+}
+}
+
static XDevice *
dp_get_device(Display * dpy)
{
XDevice *dev = NULL;
XDeviceInfo *info = NULL;
int ndevices = 0;
+int generic_device = -1;
Atom touchpad_type = 0;
Atom synaptics_property = 0;
Atom *properties = NULL;
@@ -267,16 +285,16 @@
if (!dev) {
fprintf(stderr, "Failed to open device '%s'.\n",
info[ndevices].name);
-error = 1;
-goto unwind;
+dp_get_device_unwind(, , error = 1, dpy, NULL);
+continue;
}
properties = XListDeviceProperties(dpy, dev, );
if (!properties || !nprops) {
fprintf(stderr, "No properties on device '%s'.\n",
info[ndevices].name);
-error = 1;
-goto unwind;
+dp_get_device_unwind(, , error = 1, dpy, NULL);
+continue;
}
while (nprops--) {
@@ -286,23 +304,41 @@
if (!nprops) {
fprintf(stderr, "No synaptics properties on device '%s'.\n",
info[ndevices].name);
-error = 1;
-goto unwind;
+dp_get_device_unwind(, , error = 1, dpy, NULL);
+continue;
}
-break; /* Yay, device is suitable */
+fprintf(stderr, "Found device '%s'.\n", info[ndevices].name);
+
+if ( dev_substring != NULL && strlen(dev_substring) > 0 &&
!strstr(info[ndevices].name, dev_substring) ) {
+fprintf(stderr, " - device '%s' not matching requested
name '%s'.\n",
+info[ndevices].name, dev_substring);
+dp_get_device_unwind(, , error = 1, dpy, NULL);
+continue;
+}
+
+if ( !strcmp(info[ndevices].name, "SynPS/2 Synaptics TouchPad") ) {
+fprintf(stderr, " - device '%s' is generic one, searching
for another candidate.\n",
+info[ndevices].name);
+generic_device = ndevices;
+dp_get_device_unwind(, , error = 1, dpy, NULL);
+continue;
+}
+
+fprintf(stderr, "Taking device '%s'.\n", info[ndevices].name);
+error = 0;
+break; /* Yay, device is suitable */
}
}
- unwind:
-XFree(properties);
-XFreeDeviceList(info);
-if (!dev)
-fprintf(stderr, "Unable to find a synaptics device.\n");
-else if (error && dev) {
-XCloseDevice(dpy, dev);
-dev = NULL;
+if ( generic_device != -1 && error && !dev ) {
+ fprintf(stderr, "Reverting back to generic device '%s'.\n",
+ info[generic_device].name);
+ dev = XOpenDevice(dpy, info[generic_device].id);
+ error = 0;
}
+dp_get_device_unwind(, , error, dpy, info);
+
return dev;
}
@@ -470,6 +506,7
Bug#818471: xserver-xorg-input-synaptics: syndaemon not disabling touch pad
Package: xserver-xorg-input-synaptics
Version: 1.8.3-1+b1
Severity: normal
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA512
Syndaemon doesn't disable the touchpad. It seems to have no effect
whatsoever.
I've tried running if from the command line, using a variety
combinations:
syndaemon -d -p "/tmp/syndaemon.pid" -i 5 -m 50
syndaemon -d -i 5 -R
syndaemon -d -t -R
syndaemon -d -t -K
I've also tried similar set of combinations when running from
/etc/X11/Xsession.d/98x11-syndaemon:
# start synaptics daemon to enable proper communication with touchpad
/usr/bin/syndaemon -d -i 5 -R
Regardless of how it was started, it had no effect. Testing consisted
typing in gnome-terminal and gvim and moving / tapping the touchpad.
There are two config files under /etc/X11.
/etc/X11/xorg.conf.d/touchpad.conf contains:
#
# Turn on two finger scrolling.
#
Section "InputClass"
Identifier "Touchpad twofinger scroll"
MatchIsTouchpad "yes"
Option "ZAxisMapping" "4 5"
Option "HorizTwoFingerScroll" "true"
Option "VertTwoFingerScroll" "true"
Option "FastTaps" "on"
Option "AccelFactor" "0.1028806" #2x
Option "MinSpeed" "1"
Option "MaxSpeed" "4.75"
Option "TapButton1""1"
Option "TapButton2""3"
Option "TapButton3""2"
EndSection
/etc/X11/xorg.conf.d/ctrl-alt-bksp.conf:
#
# Turn on control+alt+backspace killing of the X server.
#
Section "InputClass"
Identifier "Enable keyboard ctrl_alt_bksp"
MatchIsKeyboard "yes"
Option "XkbOptions" "terminate:ctrl_alt_bksp"
EndSection
An strace of "syndaemon -R -i 5" reveals it is receiving events
from the keyboard, it is sending a command somewhere, waiting 5
seconds, then sending another command that differs by 1 bit.
That's exactly what I would expect, so I suspect the problem
is somewhere else. Here is the strace output:
20:58:55 recvmsg(4, -{msg_name(0)=NULL,
msg_iov(1)=[{"\1\0\v\0\10\0\0\0\0\0pa\0\0\0\0\r\rD\0\0\0\0\0_stencil"...,
4096}], msg_controllen=0, msg_flags=0}, 0) = 64
20:58:55 recvmsg(4, 0x7ffc5bc8ef70, 0) = -1 EAGAIN (Resource temporarily
unavailable)
20:58:55 poll([{fd=3, events=POLLIN|POLLOUT}], 1, 4294967295) = 1 ([{fd=3,
revents=POLLOUT}])
20:58:55 writev(3, [{"\203'\6\0004\1\0\0\23\0\0\0\0\0\0\0\1\0\0\0\17\0\6\0",
24}, {NULL, 0}, {"", 0}], 3) = 24
20:58:55 poll([{fd=3, events=POLLIN}], 1, 4294967295) = 1 ([{fd=3,
revents=POLLIN}])
20:58:55 recvmsg(3, {msg_name(0)=NULL,
msg_iov(1)=[{"\1'\310\0\1\0\0\0\23\0\0\0\0\0\0\0\1\0\0\0\10\17\0\0\0\0\0\0\0\0\0\0"...,
4096}], msg_controllen=0, msg_flags=0}, 0) = 36
20:58:55 recvmsg(3, 0x7ffc5bc8ee50, 0) = -1 EAGAIN (Resource temporarily
unavailable)
20:58:55 recvmsg(3, 0x7ffc5bc8ee50, 0) = -1 EAGAIN (Resource temporarily
unavailable)
20:58:55 poll([{fd=3, events=POLLIN|POLLOUT}], 1, 4294967295) = 1 ([{fd=3,
revents=POLLOUT}])
20:58:55 writev(3, [{"\203%\6\0004\1\0\0\23\0\0\0\17\10\0\0\1\0\0\0\1\0\6\0",
24}, {NULL, 0}, {"", 0}], 3) = 24
20:58:55 recvmsg(3, 0x7ffc5bc8ef50, 0) = -1 EAGAIN (Resource temporarily
unavailable)
20:58:55 select(5, [4], NULL, NULL, {5, 0}) = 1 (in [4], left {4, 946654})
20:58:56 recvmsg(4, {msg_name(0)=NULL,
msg_iov(1)=[{"\1\0\v\0\10\0\0\0\0\0pa\0\0\0\0D\rD\0\0\0\0\0_stencil"...,
4096}], msg_controllen=0, msg_flags=0}, 0) = 64
20:58:56 recvmsg(4, 0x7ffc5bc8ef70, 0) = -1 EAGAIN (Resource temporarily
unavailable)
20:58:56 select(5, [4], NULL, NULL, {5, 0}) = 0 (Timeout)
20:59:01 poll([{fd=3, events=POLLIN|POLLOUT}], 1, 4294967295) = 1 ([{fd=3,
revents=POLLOUT}])
20:59:01 writev(3, [{"\203%\6\0004\1\0\0\23\0\0\0\17\10\0\0\1\0\0\0\0\0\6\0",
24}, {NULL, 0}, {"", 0}], 3) = 24
20:59:01 recvmsg(3, 0x7ffc5bc8ef50, 0) = -1 EAGAIN (Resource temporarily
unavailable)
20:59:01 select(5, [4], NULL, NULL, NULL) = 1 (in [4])
- -- Package-specific info:
/etc/X11/X does not exist.
/etc/X11/X is not a symlink.
/etc/X11/X is not executable.
VGA-compatible devices on PCI bus:
- --
00:02.0 VGA compatible controller [0300]: Intel Corporation Skylake Integrated
Graphics [8086:191b] (rev 06)
/etc/X11/xorg.conf does not exist.
Contents of /etc/X11/xorg.conf.d:
- -
total 8
- -rw-r--r-- 1 root root 210 Feb 12 15:32 ctrl-alt-bksp.conf
- -rw-r--r-- 1 root root 441 Mar 14 13:03 touchpad.conf
/etc/modprobe.d contains no KMS configuration files.
Kernel version (/proc/version):
- ---
Linux version 4.4.0-1-amd64 (debian-ker...@lists.debian.org) (gcc version 5.3.1
20160205 (Debian 5.3.1-8) ) #1 SMP Debian 4.4.2-3 (2016-02-21)
Xorg X server log files on system:
- --
- -rw-r--r-- 1 root root 29367 Mar 17 20:26 /var/log/Xorg.0.log
Contents of most recent Xorg X server log file (/var/log/Xorg.0.log):
-
