<html> <head> <base href="https://bugs.freedesktop.org/" /> </head> <body> <div> <a class="bz_bug_link bz_status_NEW " title="NEW --- - Second Monitor Stopped Working" href="https://bugs.freedesktop.org/show_bug.cgi?id=77857#c9">Comment # 9</a> on <a class="bz_bug_link bz_status_NEW " title="NEW --- - Second Monitor Stopped Working" href="https://bugs.freedesktop.org/show_bug.cgi?id=77857">bug 77857</a> from <a class="email" href="mailto:imirkin@alum.mit.edu" title="Ilia Mirkin <imirkin@alum.mit.edu>"> Ilia Mirkin</a> <pre>In your 'working' case, you're using the proprietary driver: [ 29.885032] nvidia: module license 'NVIDIA' taints kernel. [ 29.885037] Disabling lock debugging due to kernel taint [ 29.905236] vgaarb: device changed decodes: PCI:0000:01:00.0,olddecodes=io+mem,decodes=none:owns=io+mem [ 29.905528] [drm] Initialized nvidia-drm 0.0.0 20130102 for 0000:01:00.0 on minor 0 [ 29.905537] NVRM: loading NVIDIA UNIX x86_64 Kernel Module 331.49 Wed Feb 12 20:42:50 PST 2014 And similarly in the Xorg log: [ 38.408] (II) NVIDIA(0): Creating default Display subsection in Screen section "Default Screen Section" for depth/fbbpp 24/32 [ 38.408] (==) NVIDIA(0): Depth 24, (==) framebuffer bpp 32 [ 38.408] (==) NVIDIA(0): RGB weight 888 [ 38.408] (==) NVIDIA(0): Default visual is TrueColor [ 38.408] (==) NVIDIA(0): Using gamma correction (1.0, 1.0, 1.0) [ 38.462] (**) NVIDIA(0): Enabling 2D acceleration [ 39.431] (II) NVIDIA(0): Display (AOC 2243W (CRT-0)) does not support NVIDIA 3D Vision [ 39.431] (II) NVIDIA(0): stereo. [ 39.437] (II) NVIDIA(0): Display (HP W2071d (DFP-2)) does not support NVIDIA 3D Vision [ 39.437] (II) NVIDIA(0): stereo. [ 39.437] (II) NVIDIA(GPU-0): Found DRM driver nvidia-drm (20130102) [ 39.438] (II) NVIDIA(0): NVIDIA GPU GeForce GTX 650 (GK107) at PCI:1:0:0 (GPU-0) Which, BTW, should be noted, is not at all the 9800 GTX you claimed you had...</pre> </div> <hr> You are receiving this mail because: <ul> <li>You are the assignee for the bug.</li> </ul> </body> </html>