WARNING: at drivers/gpu/drm/i915/intel_display.c:1009 ironlake_crtc_disable+0xaf/0x8e0

[Meelis Roos]

> I tried 3.7-rc5 on an ironlale PC and got the warning in subject. The 
> computer last ran 3.6.0 without any warnings. Second reboot showed the 
> same warning plus a couple of EDID warnings (also below).

Still there with 3.7.0-rc7-00113-gcc19528 and 100% reproducible:

[    0.646574] WARNING: at drivers/gpu/drm/i915/intel_display.c:1009 ironlake_crtc_disable+0xaf/0x8e0()
[    0.646575] Hardware name: HP Compaq 8100 Elite SFF PC
[    0.646575] pipe_off wait timed out
[    0.646576] Modules linked in:
[    0.646578] Pid: 1, comm: swapper/0 Not tainted 3.7.0-rc7-00113-gcc19528 #75
[    0.646578] Call Trace:
[    0.646583]  [<ffffffff81036899>] ? warn_slowpath_common+0x79/0xc0
[    0.646584]  [<ffffffff81036995>] ? warn_slowpath_fmt+0x45/0x50
[    0.646585]  [<ffffffff812b5ceb>] ? intel_wait_for_pipe_off+0x5b/0x170
[    0.646586]  [<ffffffff812b669f>] ? ironlake_crtc_disable+0xaf/0x8e0
[    0.646588]  [<ffffffff812c5ac9>] ? intel_dp_mode_fixup+0x249/0x270
[    0.646590]  [<ffffffff812bd4c6>] ? intel_set_mode+0x306/0x920
[    0.646592]  [<ffffffff812be1d1>] ? intel_crtc_set_config+0x6f1/0x950
[    0.646595]  [<ffffffff8127545f>] ? drm_fb_helper_set_par+0x6f/0xe0
[    0.646598]  [<ffffffff8120c7bf>] ? fbcon_init+0x55f/0x5f0
[    0.646600]  [<ffffffff8125af8c>] ? visual_init+0xac/0x110
[    0.646601]  [<ffffffff8125c7ec>] ? bind_con_driver+0x16c/0x340
[    0.646602]  [<ffffffff8125ca20>] ? take_over_console+0x60/0x70
[    0.646604]  [<ffffffff8120ab6b>] ? fbcon_takeover+0x5b/0xc0
[    0.646607]  [<ffffffff81059375>] ? notifier_call_chain+0x45/0x60
[    0.646608]  [<ffffffff81059555>] ? __blocking_notifier_call_chain+0x55/0x80
[    0.646609]  [<ffffffff8120415f>] ? register_framebuffer+0x1af/0x2e0
[    0.646611]  [<ffffffff812756c4>] ? drm_fb_helper_single_fb_probe+0x1f4/0x320
[    0.646612]  [<ffffffff81275999>] ? drm_fb_helper_initial_config+0x1a9/0x220
[    0.646615]  [<ffffffff810dd13d>] ? __kmalloc+0xed/0x130
[    0.646618]  [<ffffffff812d6ead>] ? intel_fbdev_init+0x7d/0xb0
[    0.646619]  [<ffffffff81298e55>] ? i915_driver_load+0xd95/0xf00
[    0.646622]  [<ffffffff81283fa5>] ? drm_get_pci_dev+0x185/0x2c0
[    0.646624]  [<ffffffff811f3d41>] ? pci_device_probe+0xd1/0x170
[    0.646625]  [<ffffffff812e9ed8>] ? driver_probe_device+0x68/0x220
[    0.646626]  [<ffffffff812ea123>] ? __driver_attach+0x93/0xa0
[    0.646627]  [<ffffffff812ea090>] ? driver_probe_device+0x220/0x220
[    0.646629]  [<ffffffff812e836d>] ? bus_for_each_dev+0x4d/0x80
[    0.646630]  [<ffffffff812e9648>] ? bus_add_driver+0x178/0x260
[    0.646631]  [<ffffffff812ea724>] ? driver_register+0x84/0x180
[    0.646634]  [<ffffffff8188c7c4>] ? drm_core_init+0x12f/0x12f
[    0.646636]  [<ffffffff810002e2>] ? do_one_initcall+0x122/0x170
[    0.646638]  [<ffffffff8142c6bc>] ? kernel_init+0x11c/0x2a0
[    0.646641]  [<ffffffff8186c54a>] ? do_early_param+0x83/0x83
[    0.646643]  [<ffffffff8105e761>] ? schedule_tail+0x21/0xb0
[    0.646644]  [<ffffffff8142c5a0>] ? rest_init+0x70/0x70
[    0.646645]  [<ffffffff814455ac>] ? ret_from_fork+0x7c/0xb0
[    0.646646]  [<ffffffff8142c5a0>] ? rest_init+0x70/0x70
[    0.646650] ---[ end trace ed6fe7a7042b42d8 ]---
[    0.702400] [drm:intel_disable_transcoder] *ERROR* failed to disable transcoder 0



-- 
Meelis Roos (mroos at ut.ee)      http://www.cs.ut.ee/~mroos/