On Mon, Aug 05, 2013 at 05:57:48PM +0300, ville.syrjala@xxxxxxxxxxxxxxx wrote: > From: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> > > The SDVO code tries to compare the encoder's and crtc's idea of the > pixel_multiplier. Normally they have to match, but when transitioning > to DPMS off, we turn off the pipe before reading out the pipe_config, > so the pixel_multiplier in the pipe_config will be 0, whereas the > encoder will still have its pixel_multiplier set to whatever value we > were using when the display was active. This leads to a warning > from intel_modeset_check_state(). > > WARNING: CPU: 1 PID: 2846 at drivers/gpu/drm/i915/intel_sdvo.c:1378 intel_sdvo_get_config+0x158/0x160() > SDVO pixel multiplier mismatch, port: 0, encoder: 1 > Modules linked in: snd_hda_codec_idt snd_hda_intel snd_hda_codec snd_hwdep > CPU: 1 PID: 2846 Comm: Xorg Not tainted 3.11.0-rc3-00208-gbe1e8d7-dirty #19 > Hardware name: Apple Computer, Inc. Macmini1,1/Mac-F4208EC8, BIOS MM11.88Z.0055.B03.0604071521 04/07/06 > 00000000 00000000 ef0afa54 c1597bbb c1737ea4 ef0afa84 c10392ca c1737e6c > ef0afab0 00000b1e c1737ea4 00000562 c12dfbe8 c12dfbe8 ef0afb14 00000000 > f697ec00 ef0afa9c c103936e 00000009 ef0afa94 c1737e6c ef0afab0 ef0afadc > Call Trace: > [<c1597bbb>] dump_stack+0x41/0x56 > [<c10392ca>] warn_slowpath_common+0x7a/0xa0 > [<c103936e>] warn_slowpath_fmt+0x2e/0x30 > [<c12dfbe8>] intel_sdvo_get_config+0x158/0x160 > [<c12c3220>] check_crtc_state+0x1e0/0xb10 > [<c12cdc7d>] intel_modeset_check_state+0x29d/0x7c0 > [<c12dfe5c>] intel_sdvo_dpms+0x5c/0xa0 > [<c12985de>] drm_mode_obj_set_property_ioctl+0x40e/0x420 > [<c1298625>] drm_mode_connector_property_set_ioctl+0x35/0x40 > [<c1289294>] drm_ioctl+0x3e4/0x540 > [<c10fc1a2>] do_vfs_ioctl+0x72/0x570 > [<c10fc72f>] SyS_ioctl+0x8f/0xa0 > [<c159b7fa>] sysenter_do_call+0x12/0x22 > ---[ end trace 7ce940aff1366d60 ]--- > > Fix the problem by skipping the encoder get_config() function for > inactive encoders. > > Tested-by: Linus Torvalds <torvalds@xxxxxxxxxxxxxxxxxxxx> > Signed-off-by: Ville Syrjälä <ville.syrjala@xxxxxxxxxxxxxxx> Picked up for -fixes, thanks for the patch. -Daniel -- Daniel Vetter Software Engineer, Intel Corporation +41 (0) 79 365 57 48 - http://blog.ffwll.ch _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx http://lists.freedesktop.org/mailman/listinfo/intel-gfx
