http://bugzilla.opensuse.org/show_bug.cgi?id=935527 Bug ID: 935527 Summary: Toshiba Satellite L70 B150 (i915+radeon) Tearing/flickering of black screen background even in text mode Classification: openSUSE Product: openSUSE Distribution Version: 13.2 Hardware: x86-64 OS: openSUSE 13.2 Status: NEW Severity: Major Priority: P5 - None Component: Kernel Assignee: kernel-maintainers@forge.provo.novell.com Reporter: barbolani@gmail.com QA Contact: qa-bugs@suse.de Found By: --- Blocker: --- Machine is one of those hybrids with both an Intel(R) HD Graphics 4600 (according to Xorg.log) and a Venus PRO [Radeon HD 8850M / R9 M265X] (rev ff) according to lspci. Can't install fglrx as the ATI card is not yet supported by the proprietary AMD driver, thus it does not seem to be related to the raeon driver. The tearing and flickering start as soon as the kernel loads the i915 driver during the boot sequence, before starting X. It only affects the first third of the screen (height) an the first two thirds of that section (width) And only happens with the black background, be it in text or graphics mode. Setting the desktop background to white, only a small set of pixels in the top line of the screen seem to flicker. I've tried disabling the radeon module and the problem persists. Since the problem seems to be data dependent (only with black background and different degrees of tearing according to the amount of black on screen, and only in part of the screen) I suspect it is related to frame buffer compression, but not sure how to test it. I've tried with a kernel from the latest drm-intel nightly, and in that one both the i915 and radeon drivers work without issues. -- You are receiving this mail because: You are on the CC list for the bug.