486682 – Kernel mode settings makes i810 sluggish and unusable.

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Bug 486682 - Kernel mode settings makes i810 sluggish and unusable.

Summary: Kernel mode settings makes i810 sluggish and unusable.

Keywords:
Status:	CLOSED RAWHIDE
Alias:	None
Product:	Fedora
Classification:	Fedora
Component:	xorg-x11-drv-i810
Sub Component:
Version:	rawhide
Hardware:	i686
OS:	Linux
Priority:	low
Severity:	high
Target Milestone:	---
Assignee:	Kristian Høgsberg
QA Contact:	Fedora Extras Quality Assurance
Docs Contact:
URL:
Whiteboard:
Depends On:
Blocks:	IntelKMS
TreeView+	depends on / blocked

Reported:	2009-02-21 00:05 UTC by Craig Robson
Modified:	2018-04-11 12:13 UTC (History)
CC List:	9 users (show)
Fixed In Version:
Doc Type:	Bug Fix
Doc Text:
Clone Of:
Environment:
Last Closed:	2009-04-13 18:56:12 UTC
Type:	---
Embargoed:
Dependent Products:

Attachments	(Terms of Use)
Xorg.0.log (deleted) 2009-02-24 14:54 UTC, Ralf Ertzinger	no flags	Details
Xorg.0.conf with nomodeset kernel command (deleted) 2009-02-24 15:06 UTC, Ralf Ertzinger	no flags	Details
Log with kernel mode setting (deleted) 2009-02-24 15:48 UTC, Craig Robson	no flags	Details
Xorg.0.log with nomodeset (deleted) 2009-02-24 15:49 UTC, Craig Robson	no flags	Details
View All

Description Craig Robson 2009-02-21 00:05:55 UTC

When I upgrade to the kernel-PAE-2.6.29-0.124.rc5.fc11.i686 and kernel-PAE-2.6.29-0.131.rc5.git2.fc11.i686 the display performance became sluggish.

I assume this is cause by this kernel mode setting:

* Mon Feb 16 2009 Kristian Høgsberg <krh>
- Flip the switch on intel KMS.


This is on a Thinkpad X60.

Comment 1 Craig Robson 2009-02-21 00:30:54 UTC

I have verified that disabling mode setting via nomodeset kernel option makes this problem go away.

Comment 2 Sven Lankes 2009-02-22 12:23:10 UTC

Same here. Running with nomodeset, top shows ~320 MB allocated virtual memory - running with modesetting enabled, this increases to ~2000 MB.

I'm seeing this on a Toshiba Netbook with Intel 945GM Chipset.

Comment 3 Sven Lankes 2009-02-22 12:28:42 UTC

The issue seems to be chipset-specific - on a 2nd machine with a G35 chipset
kms works smooth and without issues.

Working:

00:02.0 VGA compatible controller: Intel Corporation 82G35 Express Integrated Graphics Controller (rev 03)

Broken: 

00:02.1 VGA compatible controller: Intel Corporation Mobile 945GME/GMS/GME, 943/940ML Express Integrated Graphics Controller (rev 03)

Comment 4 Matěj Cepl 2009-02-24 14:25:42 UTC

Thanks for the bug report.  We have reviewed the information you have provided above, and there is some additional information we require that will be helpful in our diagnosis of this issue.

Please attach your X server config files (/etc/X11/xorg.conf, if available) and X server log files (/var/log/Xorg.*.log) from running both with and without nomodeset setting on to the bug report as individual uncompressed file attachments using the bugzilla file attachment link below.

We will review this issue again once you've had a chance to attach this information.

Thanks in advance.

Comment 5 Kristian Høgsberg 2009-02-24 14:35:59 UTC

(In reply to comment #3)
> The issue seems to be chipset-specific - on a 2nd machine with a G35 chipset
> kms works smooth and without issues.
> 
> Working:
> 
> 00:02.0 VGA compatible controller: Intel Corporation 82G35 Express Integrated
> Graphics Controller (rev 03)
> 
> Broken: 
> 
> 00:02.1 VGA compatible controller: Intel Corporation Mobile 945GME/GMS/GME,
> 943/940ML Express Integrated Graphics Controller (rev 03)

Are you running PAE kernels on both machines?

Comment 6 Ralf Ertzinger 2009-02-24 14:52:12 UTC

I see this (Thinkpad X60s / 945GME), and yes, I do run a PAE kernel.

Xorg.0.log attached.

Comment 7 Ralf Ertzinger 2009-02-24 14:54:53 UTC

Created attachment 333047 [details]
Xorg.0.log

Comment 8 Ralf Ertzinger 2009-02-24 15:06:57 UTC

Created attachment 333049 [details]
Xorg.0.conf with nomodeset kernel command

Comment 9 Sven Lankes 2009-02-24 15:20:33 UTC

(In reply to comment #5)

>> Working:
>> 00:02.0 VGA compatible controller: Intel Corporation 82G35 Express Integrated
>> Graphics Controller (rev 03)
>> Broken: 
>> 00:02.1 VGA compatible controller: Intel Corporation Mobile 945GME/GMS/GME,
>> 943/940ML Express Integrated Graphics Controller (rev 03)
 
> Are you running PAE kernels on both machines?

Nope. The working one is running x86_64, broken is running a 32-bit PAE-Kernel.

Comment 10 Craig Robson 2009-02-24 15:48:22 UTC

Created attachment 333053 [details]
Log with kernel mode setting

Comment 11 Craig Robson 2009-02-24 15:49:06 UTC

Created attachment 333054 [details]
Xorg.0.log with nomodeset

Comment 12 Craig Robson 2009-02-24 15:52:55 UTC

I attached the Xorg.0.log with and kernel mode setting on and off.

00:02.0 VGA compatible controller: Intel Corporation Mobile 945GM/GMS, 943/940GML Express Integrated Graphics Controller (rev 03)

I am currently running kernel 2.6.29-0.137.rc5.git4.fc11.i686.PAE

It looks like Xorg memory usage goes way up as soon as I open several firefox windows.

Comment 13 Craig Robson 2009-02-24 15:54:22 UTC

There is no xorg.conf for this machine it is being completely autogenerated.

Comment 14 Craig Robson 2009-03-03 02:54:45 UTC

This seems to be fixed in the latest rawhide.  xorg-x11-drv-intel-2.6.0-10.fc11.i586.

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