https://bugzilla.kernel.org/show_bug.cgi?id=25052
--- Comment #27 from Elmar Stellnberger estellnb@elstel.org 2012-08-25 09:53:12 --- confirmed for kernel 3.4.6-1.1-desktop. Getting pixel soup on both displays with KMS (integrated and external): FS Amilo Xi 2550, ATI Mobility Radeon HD 2700, Scaleoview Q26W-1 (ext.mon.).