Kernel Bug Tracker – Bug 15416
Synaptic touchpad not working - psmouse.c timeout in the logs
Last modified: 2011-02-22 22:05:22 UTC
Exists in most recent kernel including 2.6.33
Distribution: Ubuntu 9.10, 9.04, 10.04 (alpha 3)
Hardware Environment: Dell Vostro V13 laptop
Software Environment: Linux marcin-laptop 2.6.32-020632-generic #020632 SMP Thu Dec 3 10:58:45 UTC 2009 i686 GNU/Linux
Problem Description: The touchpad is recognized with i8042.nomux option however complately not working dmesg logs tons tons of:
psmouse.c: bad data from KBC - timeout
when clicking, tapping the touchpad
Steps to reproduce:
Run the system with i8042.nomux option. Running without i8042.nomux detects the touchpad as PS/2 Generic Mouse.
I did quite huge research on the topic and know that other people have the same problem on their Dell Vostro V13.
Tested all the i8042.xxx options, other ACPI options. Also tested number of bios settings (including disable usb legacy support). Also did upgrade to A02 (newest Dell bios for the machine)
Created attachment 25283 [details]
dmesg output after running with i8042.nomux
Created attachment 25284 [details]
dmesg output after running with i8042.nomux and i8042.debug
Created attachment 26839 [details]
dmesg output with psmouse=10 and i8042.nomux=1 kernel options
Created attachment 26840 [details]
cat /proc/bus/input/devices >devices.txt
Created attachment 26841 [details]
Output of evtest (sudo ./ev /dev/input/event10)
I have the same problem with the same laptop (dell vostro v13 13.3") as the reporter.
My kernel is the default ubuntu 10.04: 2.6.32-22-generic
There is an ubuntu bug* #380126, where lot of v13 users confirms this bug, but not much additional info is there.
I tried to digg a bit more. I read* on bug #6105 , that maybe psmouse.rate=40 helps, so I modified /etc/default/grub line:
Then sudo update-grub, and rebooted.
The result is lot of
[ 86.110461] psmouse.c: bad data from KBC - timeout
*when* I move the mouse around it adds to the dmesg line.
The mouse pointer stays at the middle of the screen and does not move.
(it is not working in gdm either)
I have attached a dmesg output, dmesg_psmouse_10.txt.
I also redid with psmouse.rate=20 and 10 too.
I have also read* on bug #496314, I should test my touchpad with evtest
( http://people.freedesktop.org/~whot/evtest.c ) program.
So I downloaded, and tested it. The result is attached as evtest_output.txt.
I tested it with sudo ./ev /dev/input/event10, as in file /proc/bus/input/devices shows the ps/2 mouse as event10.
I also attached my /proc/bus/input/devices output as devices.txt
If there are any other test, what I can do, just ask.
bug #380126: https://bugs.launchpad.net/ubuntu/+source/xserver-xorg-input-synaptics/+bug/380126
bug #6105: https://bugzilla.kernel.org/show_bug.cgi?id=6105
bug #496314: https://bugzilla.redhat.com/show_bug.cgi?id=496314
I think the bug is with the touchpad itself. I uninstalled DELL's in-home tweaked driver on Win7, and installed Synaptics' generic driver, and even Synaptics itself on Windows thinks that this is a PS/2 mouse and not a touchpad! So I think the bug is with either the BIOS or the firmware of the touchpad, advertising itself as a mouse...
There are a myriads of bug reports about it on Ubuntu, Red Hat, and Mandriva, and many forum posts too, but I think the only thing it can be done is to hardcode the Product ID on the Linux synaptics driver in order to recognize it as a touchpad and not as a PS/2 mouse -- just like DELL did it for its own Windows drivers. I don't know what the policy is on Linux though about getting around buggy hardware.
Created attachment 41862 [details]
[PATCH] Input: introduce 'notimeout' blacklist for Dell Vostro V13
Testing with this patch would be appreciated.
Hello J(In reply to comment #8)
> Created an attachment (id=41862) [details]
> [PATCH] Input: introduce 'notimeout' blacklist for Dell Vostro V13
> Testing with this patch would be appreciated.
Patch tested yesterday on a 2.6.32 kernel (linux LMDE; debian style box), good news, now I have a fully functional synaptics touchpad on the Vostro V13, many thanks!!!
now my touchpad is identified as SynPS/2 Synaptics TouchPad in gpointing-device-settings, and I could define all options like vertical, horizontal and circle scroll, I can now also use zoom with 2 fingers in apps that support this feature.
Very happy to get back a fully functional Touchpad
For others to test, I commented my installation here :
Once again, many thanks && Happy new year!
There was one report that with the patch applied touchpad is dead on resume, could you please verify that shutdown and suspend/resume work properly? Thanks.
I did not shutdown since I installed the patch, but I closed my screen last night and my computer went to suspend. and this morning, touchpad is still working.
was the report of the dead touchpad for a 2.6.32 kernel?
*** Bug 22462 has been marked as a duplicate of this bug. ***
Author: Jiri Kosina <email@example.com>
Date: Sat Jan 8 01:37:26 2011 -0800
Input: i8042 - introduce 'notimeout' blacklist for Dell Vostro V13
in Linus' tree, closing.
I have this bug with ubuntu mainline kernel, is somewhat related to this?
Andrea, was this happening before or is it just started to happen?
didn't happen with patched 2.6.37, don't know if it's related to ubuntu or vanilla 2.6.38
2.6.37 patched with what? This particular patch?
and I can confirm the bug with latest ubuntu natty kernel
Ok, so if patched mainline works then please ask Ubunty guys to backport it to their kernel.