It sounds like the unknown key messages have been resolved. The unknown
WMI event messages are just informational and are completely harmless;
they indicate that the BIOS is providing some data that dell-wmi doesn't
know how to process, but leaving these events unprocessed will not cause
any problems. Dell has indicated that they plan to introduce support for
these events upstream in the coming weeks.
What I'm going to do is disable the unknown WMI event message in our
kernels by default to keep it from cluttering up the kernel log, since
there's no compelling reason to SRU the event support to old kernels.
I'll also be on the lookout for Dell's patches to support these events
and backport them to precise if they're available in time.
** Changed in: linux (Ubuntu)
Status: Triaged => In Progress
** Changed in: linux (Ubuntu)
Assignee: (unassigned) => Seth Forshee (sforshee)
** Summary changed:
- Unknown key fee[x] pressed with Dell Latitude XT2
+ Received unknown WMI event messages with Dell Latitude XT2
** Description changed:
+ == SRU Justification ==
+
+ Impact: Many Dell systems send WMI events that are unknown to the dell-
+ wmi driver, and in response dell-wmi prints a "Received unknwon WMI
+ event ..." message. This is harmless; some minimal functionality may be
+ missing from not knowing how to interpret the events, but there is no
+ problem with leaving the events unprocessed. However, the messages can
+ clutter up the kernel logs and can also cause users to fear that there
+ is a problem with their system.
+
+ Fix: Demote these messages to pr_debug until we know how to handle them,
+ causing them to no longer be printed by default.
+
+ Test Case: Using a patched driver results in the messages no longer
+ appearing in the kernel log.
+
+ ---
+
On a Dell Latitude XT2 (tablet PC with N-Trig touch screen) I see a
constant stream of messages in syslog like this:
... kernel: [timestamp] [host]: Unknown key fee6 pressed
... kernel: [timestamp] [host]: Unknown key fee7 pressed
... kernel: [timestamp] [host]: Unknown key fee9 pressed
... kernel: [timestamp] [host]: Unknown key fee8 pressed
... kernel: [timestamp] [host]: Unknown key ffd0 pressed
... kernel: [timestamp] [host]: Unknown key fee6 pressed
... kernel: [timestamp] [host]: Unknown key fee8 pressed
... kernel: [timestamp] [host]: Unknown key fee9 pressed
... kernel: [timestamp] [host]: Unknown key 11 pressed
... kernel: [timestamp] [host]: Unknown key ffd1 pressed
... kernel: [timestamp] [host]: Unknown key e048 pressed
There is no keyboard or mouse activity, but the messages still keep
coming. They seem to come at random, sometimes one every second or so,
sometimes there's a gap of 15-30 seconds between the messages. But they
don't every seem to stop completely.
I *think* the laptop has an accelerometer, and I've noticed that picking
the laptop up and moving it around seems to generate some activity.
Any suggestions?
Mark
- ---
+ ---
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
Architecture: i386
AudioDevicesInUse:
- USER PID ACCESS COMMAND
- /dev/snd/controlC1: mark 1990 F.... pulseaudio
+ USER PID ACCESS COMMAND
+ /dev/snd/controlC1: mark 1990 F.... pulseaudio
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
- Card hw:0 'Intel'/'HDA Intel at 0xf6adc000 irq 21'
- Mixer name : 'IDT 92HD71B7X'
- Components : 'HDA:111d76b2,10280252,00100302'
- Controls : 20
- Simple ctrls : 12
+ Card hw:0 'Intel'/'HDA Intel at 0xf6adc000 irq 21'
+ Mixer name : 'IDT 92HD71B7X'
+ Components : 'HDA:111d76b2,10280252,00100302'
+ Controls : 20
+ Simple ctrls : 12
Card1.Amixer.info:
- Card hw:1 'Audio'/'Promethean Promethean USB Audio at
usb-0000:00:1d.7-6.4.4.3, full speed'
- Mixer name : 'USB Mixer'
- Components : 'USB0d48:0100'
- Controls : 10
- Simple ctrls : 6
+ Card hw:1 'Audio'/'Promethean Promethean USB Audio at
usb-0000:00:1d.7-6.4.4.3, full speed'
+ Mixer name : 'USB Mixer'
+ Components : 'USB0d48:0100'
+ Controls : 10
+ Simple ctrls : 6
DistroRelease: Ubuntu 10.04
HibernationDevice: RESUME=UUID=2df0457c-346c-4a57-8c2f-131995f4ddc2
InstallationMedia: Ubuntu 10.04 "Lucid Lynx" - Alpha i386 (20100304)
MachineType: Dell Inc. Latitude XT2
Package: linux (not installed)
PccardctlIdent:
- Socket 0:
- no product info available
+ Socket 0:
+ no product info available
PccardctlStatus:
- Socket 0:
- no card
+ Socket 0:
+ no card
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-22-generic
root=UUID=f1cd1988-b5c2-4d32-91e6-51db4c2aa6b9 ro quiet splash
ProcEnviron:
- LANG=en_GB.utf8
- SHELL=/bin/bash
+ LANG=en_GB.utf8
+ SHELL=/bin/bash
ProcVersionSignature: Ubuntu 2.6.32-22.33-generic 2.6.32.11+drm33.2
Regression: No
RelatedPackageVersions: linux-firmware 1.34
Reproducible: Yes
Tags: lucid needs-upstream-testing
Uname: Linux 2.6.32-22-generic i686
UserGroups: adm admin cdrom dialout lpadmin plugdev sambashare
dmi.bios.date: 12/22/2009
dmi.bios.vendor: Dell Inc.
dmi.bios.version: A06
dmi.board.name: 0M373P
dmi.board.vendor: Dell Inc.
dmi.chassis.type: 8
dmi.chassis.vendor: Dell Inc.
dmi.modalias:
dmi:bvnDellInc.:bvrA06:bd12/22/2009:svnDellInc.:pnLatitudeXT2:pvr:rvnDellInc.:rn0M373P:rvr:cvnDellInc.:ct8:cvr:
dmi.product.name: Latitude XT2
dmi.sys.vendor: Dell Inc.
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https://bugs.launchpad.net/bugs/581312
Title:
Received unknown WMI event messages with Dell Latitude XT2
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