[Bug 608201] [NEW] endless stream of uevents related to Intel onboard graphics

Wed Jul 21 11:47:15 UTC 2010

Public bug reported:

On my Ubuntu system, udev, init and upstart-udev-bridge each eat around
~8% CPU. On my Gentoo system at home (that also has Intel graphics),
udev eats nothing.

Here is the "udevadm monitor" output:

patrakov at patrakov-desktop:~$ udevadm monitor
monitor will print the received events for:
UDEV - the event which udev sends out after rule processing
KERNEL - the kernel uevent

KERNEL[1279711636.543757] change   /devices/pci0000:00/0000:00:02.0/drm/card0 (drm)
UDEV  [1279711636.545723] change   /devices/pci0000:00/0000:00:02.0/drm/card0 (drm)
KERNEL[1279711636.550036] change   /devices/pci0000:00/0000:00:02.0/drm/card0 (drm)
UDEV  [1279711636.556736] change   /devices/pci0000:00/0000:00:02.0/drm/card0 (drm)
KERNEL[1279711636.560277] change   /devices/pci0000:00/0000:00:02.0/drm/card0 (drm)
UDEV  [1279711636.562998] change   /devices/pci0000:00/0000:00:02.0/drm/card0 (drm)
KERNEL[1279711636.573643] change   /devices/pci0000:00/0000:00:02.0/drm/card0 (drm)
UDEV  [1279711636.575592] change   /devices/pci0000:00/0000:00:02.0/drm/card0 (drm)
KERNEL[1279711636.629531] change   /devices/pci0000:00/0000:00:02.0/drm/card0 (drm)
UDEV  [1279711636.631481] change   /devices/pci0000:00/0000:00:02.0/drm/card0 (drm)
KERNEL[1279711636.659774] change   /devices/pci0000:00/0000:00:02.0/drm/card0 (drm)
UDEV  [1279711636.661881] change   /devices/pci0000:00/0000:00:02.0/drm/card0 (drm)
KERNEL[1279711636.673441] change   /devices/pci0000:00/0000:00:02.0/drm/card0 (drm)
UDEV  [1279711636.675395] change   /devices/pci0000:00/0000:00:02.0/drm/card0 (drm)
KERNEL[1279711636.713191] change   /devices/pci0000:00/0000:00:02.0/drm/card0 (drm)
UDEV  [1279711636.715157] change   /devices/pci0000:00/0000:00:02.0/drm/card0 (drm)
KERNEL[1279711636.746274] change   /devices/pci0000:00/0000:00:02.0/drm/card0 (drm)
UDEV  [1279711636.748273] change   /devices/pci0000:00/0000:00:02.0/drm/card0 (drm)
KERNEL[1279711636.749674] change   /devices/pci0000:00/0000:00:02.0/drm/card0 (drm)
UDEV  [1279711636.753128] change   /devices/pci0000:00/0000:00:02.0/drm/card0 (drm)
KERNEL[1279711636.764809] change   /devices/pci0000:00/0000:00:02.0/drm/card0 (drm)
UDEV  [1279711636.766845] change   /devices/pci0000:00/0000:00:02.0/drm/card0 (drm)
KERNEL[1279711636.772156] change   /devices/pci0000:00/0000:00:02.0/drm/card0 (drm)
UDEV  [1279711636.774026] change   /devices/pci0000:00/0000:00:02.0/drm/card0 (drm)
KERNEL[1279711636.788969] change   /devices/pci0000:00/0000:00:02.0/drm/card0 (drm)
UDEV  [1279711636.792166] change   /devices/pci0000:00/0000:00:02.0/drm/card0 (drm)
KERNEL[1279711636.822973] change   /devices/pci0000:00/0000:00:02.0/drm/card0 (drm)
UDEV  [1279711636.824931] change   /devices/pci0000:00/0000:00:02.0/drm/card0 (drm)
KERNEL[1279711636.828249] change   /devices/pci0000:00/0000:00:02.0/drm/card0 (drm)
UDEV  [1279711636.830143] change   /devices/pci0000:00/0000:00:02.0/drm/card0 (drm)
...and so on

So it looks like the graphics driver emits a useless uevent up to 200
times a second.

ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: linux-image-2.6.32-23-generic 2.6.32-23.37
Regression: No
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.32-23.37-generic 2.6.32.15+drm33.5
Uname: Linux 2.6.32-23-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
Architecture: amd64
AudioDevicesInUse:
 USER        PID ACCESS COMMAND
 /dev/snd/controlC0:  patrakov   4856 F.... pulseaudio
CRDA: Error: [Errno 2] Нет такого файла или каталога
Card0.Amixer.info:
 Card hw:0 'Intel'/'HDA Intel at 0xfdff8000 irq 16'
   Mixer name	: 'Realtek ALC888'
   Components	: 'HDA:80862803,80860101,00100000 HDA:10ec0888,1458a002,00100001'
   Controls      : 44
   Simple ctrls  : 23
Date: Wed Jul 21 17:27:49 2010
IwConfig:
 lo        no wireless extensions.

 eth0      no wireless extensions.

 tap0      no wireless extensions.
Lsusb:
 Bus 005 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 Bus 004 Device 001: ID 1d6b:0001 Linux Foundation 1.1 root hub
 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: Gigabyte Technology Co., Ltd. EG41MFT-US2H
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-23-generic root=UUID=e154a633-7199-47fb-b225-fbfcaf458ace ro quiet splash
ProcEnviron:
 PATH=(custom, user)
 LANG=ru_RU.utf8
 SHELL=/bin/bash
RelatedPackageVersions: linux-firmware 1.34.1
RfKill:

SourcePackage: linux
dmi.bios.date: 09/30/2009
dmi.bios.vendor: Award Software International, Inc.
dmi.bios.version: F2
dmi.board.name: EG41MFT-US2H
dmi.board.vendor: Gigabyte Technology Co., Ltd.
dmi.board.version: x.x
dmi.chassis.type: 3
dmi.chassis.vendor: Gigabyte Technology Co., Ltd.
dmi.modalias: dmi:bvnAwardSoftwareInternational,Inc.:bvrF2:bd09/30/2009:svnGigabyteTechnologyCo.,Ltd.:pnEG41MFT-US2H:pvr:rvnGigabyteTechnologyCo.,Ltd.:rnEG41MFT-US2H:rvrx.x:cvnGigabyteTechnologyCo.,Ltd.:ct3:cvr:
dmi.product.name: EG41MFT-US2H
dmi.sys.vendor: Gigabyte Technology Co., Ltd.

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

** Tags: amd64 apport-bug graphics lucid needs-upstream-testing

-- 
endless stream of uevents related to Intel onboard graphics
https://bugs.launchpad.net/bugs/608201
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