Public bug reported:
I am using the amd64 version of Ubuntu using the generic kernel. I have
an Intel Series 4 mobile chip. I notice that under some circumstances,
namely logging in and starting up a program using wine, my mouse
movement begins to slow as well as any window drawing. It makes the
interface hard to interact with though it clears up the moment the
desktop is fully logged in or the wine program fully loads. This only
happens when they are starting up.
I have found if I use the preempt kernel, or custom compile a kernel
with a higher hz such as 300 or 1000, this does not occur (at least so
much less it is hardly noticeable). I did a test compiling a kernel with
1000hz and no preemption at all and this did not occur, so it has
nothing to do with voluntary preemption.
I will test a kernel from the mainline ppa soon; though I assume the
results will be the same.
ProblemType: Bug
DistroRelease: Ubuntu 10.04
Package: linux-image-2.6.32-25-generic 2.6.32-25.45
Regression: No
Reproducible: Yes
ProcVersionSignature: Ubuntu 2.6.32-25.45-generic 2.6.32.21+drm33.7
Uname: Linux 2.6.32-25-generic x86_64
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.21.
AplayDevices:
**** List of PLAYBACK Hardware Devices ****
card 0: Intel [HDA Intel], device 0: VT1708S Analog [VT1708S Analog]
Subdevices: 2/2
Subdevice #0: subdevice #0
Subdevice #1: subdevice #1
Architecture: amd64
ArecordDevices:
**** List of CAPTURE Hardware Devices ****
card 0: Intel [HDA Intel], device 0: VT1708S Analog [VT1708S Analog]
Subdevices: 2/2
Subdevice #0: subdevice #0
Subdevice #1: subdevice #1
AudioDevicesInUse:
USER PID ACCESS COMMAND
/dev/snd/controlC0: virgil 1994 F.... mixer_applet2
CRDA: Error: [Errno 2] No such file or directory
Card0.Amixer.info:
Card hw:0 'Intel'/'HDA Intel at 0xfe9f4000 irq 22'
Mixer name : 'VIA VT1708S'
Components : 'HDA:11060397,10431111,00100000'
Controls : 20
Simple ctrls : 13
Date: Mon Nov 22 08:05:29 2010
HibernationDevice: RESUME=UUID=a9f227d2-ad0b-45f7-b9c6-ea5ad2b5ddc3
InstallationMedia: Ubuntu 10.04.1 LTS "Lucid Lynx" - Release amd64 (20100816.1)
MachineType: ASUSTeK Computer Inc. K50IJ
ProcCmdLine: BOOT_IMAGE=/boot/vmlinuz-2.6.32-25-generic
root=UUID=422b646a-0c1f-4098-bb6b-efb5a094b139 ro acpi_backlight=vendor
i915.powersave=0 quiet splash
ProcEnviron:
LANG=en_US.utf8
SHELL=/bin/bash
RelatedPackageVersions: linux-firmware 1.34.1
RfKill:
0: phy0: Wireless LAN
Soft blocked: no
Hard blocked: no
SourcePackage: linux
dmi.bios.date: 12/04/2009
dmi.bios.vendor: American Megatrends Inc.
dmi.bios.version: 217
dmi.board.asset.tag: ATN12345678901234567
dmi.board.name: K50IJ
dmi.board.vendor: ASUSTeK Computer Inc.
dmi.board.version: 1.0
dmi.chassis.asset.tag: ATN12345678901234567
dmi.chassis.type: 10
dmi.chassis.vendor: ASUSTeK Computer Inc.
dmi.chassis.version: 1.0
dmi.modalias:
dmi:bvnAmericanMegatrendsInc.:bvr217:bd12/04/2009:svnASUSTeKComputerInc.:pnK50IJ:pvr1.0:rvnASUSTeKComputerInc.:rnK50IJ:rvr1.0:cvnASUSTeKComputerInc.:ct10:cvr1.0:
dmi.product.name: K50IJ
dmi.product.version: 1.0
dmi.sys.vendor: ASUSTeK Computer Inc.
** Affects: linux (Ubuntu)
Importance: Undecided
Status: New
** Tags: amd64 apport-bug kconfig lucid needs-upstream-testing
--
100hz causes Xorg to stutter in some circumstances
https://bugs.launchpad.net/bugs/680022
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