radeon: Scrambled graphics on iMac 21.5" Late 2009 Radeon Mobility HD 4670
Submitted by John Paul Adrian Glaubitz
Assigned to Default DRI bug account
Created attachment 112830
Screenshot of the scrambled display on the iMac 21.5" Late 2009
I recently did a fresh install of Debian Jessie on a late 2009 Apple iMac 21.5" which has an ATI Radeon Mobility HD 4670 (model: A1311).
The video display on this machine looks scrambled, particularly, one can see the framebuffer four times on the display as if looking at an overview of four virtual desktops with extremely low contrast and no color. The image of each these views is basically white but visible with the bare eye.
I am attaching a screenshot for reference as well as the appropriate logs files. More specs on the machine can be found in this Debian installation report .
**Attachment 112830**, "Screenshot of the scrambled display on the iMac 21.5" Late 2009":