[Bug 585699] [NEW] Erratic touchpad (can be fixed by adding "i8042.nomux=1" in kernel cmdline)

[YannUbuntu]

Public bug reported:

Bug: after several minutes, the cursor (touchpad, but I think it
happened also with mouse) can get erratic move, and the clicks are
disabled.

Concerns: Ubuntu 8.10 until Ubuntu 10.04  (I think I did not have this
bug on Ubuntu 7.10 nor 8.04). On live-cd and installation on hard disk.
My pc is a NEC LL550/H.

Workaround used since Ubuntu 8.10 : I add "i8042.nomux=1" in kernel
cmdline.

Efficiency of this workaround : nearly perfect (I still sometimes have
disabled clicks, like today, but it occured maybe 2 times in 2 years)

Other: I wonder if I should also add "i8042.reset=1"  in kernel cmdline
(seen on other similar bug reports), how can I test its efficiency ?
what are the meanings/effects of "i8042.nomux=1" and "i8042.reset=1" ?


Best regards.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: linux-image-2.6.32-22-generic 2.6.32-22.33
Regression: Yes
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.32-22.33-generic 2.6.32.11+drm33.2
Uname: Linux 2.6.32-22-generic i686
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
Architecture: i386
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  yyy        2688 F.... pulseaudio
CRDA: Error: [Errno 2] Aucun fichier ou dossier de ce type
Card0.Amixer.info:
 Card hw:0 'SB'/'HDA ATI SB at 0xc0000000 irq 16'
   Mixer name	: 'Realtek ALC262'
   Components	: 'HDA:10ec0262,10338802,00100002 HDA:11c13026,1033880b,00100700'
   Controls      : 19
   Simple ctrls  : 13
CheckboxSubmission: 7bf4676ac92338d1d362954586c33b04
CheckboxSystem: bd9978d0ff03d4f55482fc24a6cdac35
Date: Wed May 26 13:33:50 2010
HibernationDevice: RESUME=UUID=def8769f-2a4a-43b5-b9d9-c27f7234ac7d
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Alpha i386 (20100328)
Lsusb:
 Bus 003 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 002 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 001 Device 001: ID 1d6b:0002 Linux Foundation 2.0 root hub
MachineType: NEC PC-LL550HG
PccardctlIdent:
 Socket 0:
   no product info available
PccardctlStatus:
 Socket 0:
   no card
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-22-generic root=UUID=b3f9b3f2-a0c7-49c1-ae50-f849a02fd52e ro quiet splash i8042.nomux=1
ProcEnviron:
 LANG=fr_FR.utf8
 SHELL=/bin/bash
RelatedPackageVersions: linux-firmware 1.34
RfKill:
 0: phy0: Wireless LAN
 	Soft blocked: no
 	Hard blocked: no
SourcePackage: linux
dmi.bios.date: 01/06/2007
dmi.bios.vendor: NEC
dmi.bios.version: NOTE BIOS Version /524A0402
dmi.board.name: HAL50
dmi.board.vendor: NEC
dmi.board.version: 20C2B
dmi.chassis.type: 10
dmi.chassis.vendor: NEC
dmi.modalias: dmi:bvnNEC:bvrNOTEBIOSVersion/524A0402:bd01/06/2007:svnNEC:pnPC-LL550HG:pvr:rvnNEC:rnHAL50:rvr20C2B:cvnNEC:ct10:cvr:
dmi.product.name: PC-LL550HG
dmi.sys.vendor: NEC

** Affects: linux (Ubuntu)
     Importance: Undecided
         Status: New


** Tags: apport-bug i386 kconfig lucid needs-upstream-testing regression-release

-- 
Erratic touchpad (can be fixed by adding "i8042.nomux=1" in kernel cmdline)
https://bugs.launchpad.net/bugs/585699
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