[Bug 90951] [snb] Display connected to displayport doesn't wake up when it's turn off and on or enters power saving mode

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=90951

--- Comment #15 from Thomas Mann <rauchwolke at gmx.net> ---
i found this in my latest 3.19.0 log

[29279.887541] ------------[ cut here ]------------
[29279.887555] WARNING: CPU: 0 PID: 22736 at
drivers/gpu/drm/i915/intel_display.c:9713 intel_check_page_flip+0xbc/0xd0()
[29279.887557] Kicking stuck page flip: queued at 521920, now 521926
[29279.887563] CPU: 0 PID: 22736 Comm: crypter Not tainted 3.19.0-gentoo #3
[29279.887565] Hardware name: LENOVO 4291UYX/4291UYX, BIOS 8DET69WW (1.39 )
07/18/2013
[29279.887568]  0000000000000000 ffffffff81f683a0 ffffffff81b60554
ffff88041e203de8
[29279.887572]  ffffffff811024a2 ffff88040bfe3800 ffff88040b625000
0000000000000001
[29279.887575]  0000000000000001 0000000000000001 ffffffff81102555
ffffffff81f6b090
[29279.887579] Call Trace:
[29279.887580]  <IRQ>  [<ffffffff81b60554>] ? dump_stack+0x40/0x50
[29279.887592]  [<ffffffff811024a2>] ? warn_slowpath_common+0x72/0xb0
[29279.887596]  [<ffffffff81102555>] ? warn_slowpath_fmt+0x45/0x50
[29279.887602]  [<ffffffff815f7bac>] ? __intel_pageflip_stall_check+0xbc/0x100
[29279.887605]  [<ffffffff8160a29c>] ? intel_check_page_flip+0xbc/0xd0
[29279.887611]  [<ffffffff815dfffd>] ? ironlake_irq_handler+0x31d/0x1040
[29279.887616]  [<ffffffff81143f39>] ? handle_irq_event_percpu+0x29/0xf0
[29279.887619]  [<ffffffff8114402c>] ? handle_irq_event+0x2c/0x50
[29279.887623]  [<ffffffff81146b5f>] ? handle_edge_irq+0x6f/0x110
[29279.887628]  [<ffffffff8103ec25>] ? handle_irq+0x15/0x20
[29279.887631]  [<ffffffff8103e642>] ? do_IRQ+0x42/0xe0
[29279.887636]  [<ffffffff81b6a9ea>] ? common_interrupt+0x6a/0x6a
[29279.887637]  <EOI> 
[29279.887639] ---[ end trace eea2bdafb747793a ]---

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