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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
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.
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
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.
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!
Awesome. Closing this bug then. -- Fedora Bugzappers volunteer triage team https://fedoraproject.org/wiki/BugZappers