https://bugzilla.kernel.org/show_bug.cgi?id=49351 Summary: vga_switcheroo results in black screen (bisected) Product: Drivers Version: 2.5 Kernel Version: 3.7-rc1+ Platform: All OS/Version: Linux Tree: Mainline Status: NEW Severity: normal Priority: P1 Component: Video(DRI - non Intel) AssignedTo: drivers_video-dri@xxxxxxxxxxxxxxxxxxxx ReportedBy: e-mail@xxxxxxx CC: alexdeucher@xxxxxxxxx Regression: Yes Created an attachment (id=84381) --> (https://bugzilla.kernel.org/attachment.cgi?id=84381) lspci -vvv On my muxed hybrid system (Lenovo IdeaPad U455) vga_switcheroo doesn't work as expected. Initially after system booting both video cards are powered and the IGD one is active. Then, when i try to switch active gpu with # echo DIS > /sys/kernel/debug/vgaswitcheroo/switch screen goes black. The first bad commit, that broke vga_switcheroo is: commit 492b49a2f21a7ce6cb0abce36017daa06036a626 Author: Alex Deucher <alexander.deucher@xxxxxxx> Date: Thu Aug 16 14:07:37 2012 -0400 drm/radeon: reorganize ATPX support (v2) - rework the acpi execute code - User proper parameters for ATPX functions v2: rebase fixes Signed-off-by: Alex Deucher <alexander.deucher@xxxxxxx> -- Configure bugmail: https://bugzilla.kernel.org/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are watching the assignee of the bug. _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/dri-devel
