Bug 741949

Summary:	Sparkles on LCD
Product:	[Fedora] Fedora	Reporter:	Máirín Duffy <duffy>
Component:	xorg-x11-drv-intel	Assignee:	Adam Jackson <ajax>
Status:	CLOSED CURRENTRELEASE	QA Contact:	Fedora Extras Quality Assurance <extras-qa>
Severity:	unspecified	Docs Contact:
Priority:	unspecified
Version:	15	CC:	ajax, elad, gvaley, xgl-maint
Target Milestone:	---
Target Release:	---
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	Bug Fix
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2012-01-30 16:43:55 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:

Description Máirín Duffy 2011-09-28 15:13:49 UTC

I just received a new Lenovo x220 tablet this week. I put my F15 hdd in it. After a couple of days I've noticed that in regions of the screen that are dark, the screen 'sparkles' with little white animated pixels. 

(Video: http://youtu.be/yzO42fyEbXE )

This only happens on the LCD of the laptop; I have a second monitor connected but it doesn't sparkle while the laptop LCD does.

The control center system info says:

Graphics: Intel® Sandybridge Mobile  

lspci says:
00:00.0 Host bridge: Intel Corporation Sandy Bridge DRAM Controller (rev 09)
00:02.0 VGA compatible controller: Intel Corporation Device 0126 (rev 09)

dmesg says:
[    1.786225] agpgart-intel 0000:00:00.0: Intel Sandybridge Chipset
[    1.786409] agpgart-intel 0000:00:00.0: detected gtt size: 2097152K total, 262144K mappable
[    1.789740] agpgart-intel 0000:00:00.0: detected 65536K stolen memory
[    1.790017] agpgart-intel 0000:00:00.0: AGP aperture is 256M @ 0xe0000000
[   13.536393] fbcon: inteldrmfb (fb0) is primary device
[   13.716134] fb0: inteldrmfb frame buffer device

If there's any other device information I can give you let me know.

Version-Release number of selected component (if applicable):

xorg-x11-drv-intel-2.15.0-3.fc15.x86_64

Comment 1 Elad Alfassa 2011-09-28 15:44:58 UTC

I don't see any sparkles in the video... but more logs could be helpful:


Please add drm.debug=0x04 to the kernel command line, restart computer, and attach

* your X server config file (/etc/X11/xorg.conf, if available),
* X server log file (/var/log/Xorg.*.log)
* output of the dmesg command, and
* system log (/var/log/messages)
to the bug report as individual uncompressed file attachments.

Comment 2 Zen 2011-10-03 11:34:11 UTC

I had a similar problem with one of my monitors. (Actually I don't see sparkles on the video either, but based on your description I presume it's similar.)

It only happened on the border between black (000000) and red (FF0000) pixels.
It turned out that the monitor was not running fine on maximum refresh rate. I selected the lower refresh rate (60Hz in this case) and the problem disappeared.

Hope that helps,
Evgeni

Comment 3 Máirín Duffy 2011-10-21 00:57:13 UTC

It got really bad tonight, here's a video: http://www.youtube.com/watch?v=OlXqRvN9cjo

I can't seem to reproduce it at home. It happens at work when I plug in an external monitor. It gets really bad if I suspend from the two monitor setup, then unsuspend without the external monitor. I'll try to run the debug tomm morning at the office.

Comment 4 Máirín Duffy 2012-01-30 16:32:11 UTC

So with an update I'm running xorg-x11-drv-intel-2.17.0-4.fc16.x86_64 and the issue seems to be resolved!

Comment 5 Elad Alfassa 2012-01-30 16:43:55 UTC

Awesome. Closing this bug then.



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