https://bugs.freedesktop.org/show_bug.cgi?id=64850
Priority: medium Bug ID: 64850 Assignee: dri-devel@lists.freedesktop.org Summary: Second screen black on Pitcairn PRO Severity: normal Classification: Unclassified OS: Linux (All) Reporter: flocke@shadowice.org Hardware: Other Status: NEW Version: XOrg CVS Component: DRM/Radeon Product: DRI
Created attachment 79637 --> https://bugs.freedesktop.org/attachment.cgi?id=79637&action=edit dmesg | grep drm right after boot (no X11)
I just installed my new Pitcairn PRO card (Radeon 7850) in my PC.
Every time I boot into linux (Arch Linux x86_64) my second monitor turns black right at boot. There are no errors and I can even start X11 with my dual-monitor configuration and move the mouse from my first screen to the right. It is as if the screen is there, only my monitor doesn't show it.
This happens not in X11, in fact the secend screen goes black as soon as the kernel/kms is loaded.
I attached the output of 'dmesg | grep drm' with the drm.debug=15 kernel option right after booting and befor starting X11 and I will attach the same commands output after running X11.