[Bug 93782] [i9xx TV][BISECT] vblank wait timeout on crtc

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=93782

Erik Koennecke <erik.koennecke at gmail.com> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |erik.koennecke at gmail.com

--- Comment #21 from Erik Koennecke <erik.koennecke at gmail.com> ---
The bug is still in 4.9.0-rc2, on a Dell Latitude D830 with i915 graphics. It
gets triggered during the boot process 14 times and is delaying considerably,
sometimes freezing the machine.

[   12.100251] ------------[ cut here ]------------
[   12.100292] WARNING: CPU: 0 PID: 6 at
/home/kernel/COD/linux/drivers/gpu/drm/drm_irq.c:1252
drm_wait_one_vblank+0x1aa/0x1b0 [drm]
[   12.100294] vblank wait timed out on crtc 0
[   12.100295] Modules linked in: uas usb_storage psmouse ahci libahci
firewire_ohci pata_acpi firewire_core crc_itu_t tg3 ptp pps_core i915 wmi
i2c_algo_bit drm_kms_helper syscopyarea sysfillrect sysimgblt video fb_sys_fops
drm
[   12.100329] CPU: 0 PID: 6 Comm: kworker/u4:0 Not tainted
4.9.0-040900rc2-generic #201610232131
[   12.100331] Hardware name: Dell Inc. Latitude D830                  
/0HN341, BIOS A17 06/19/2013
[   12.100339] Workqueue: events_unbound async_run_entry_fn
[   12.100342]  ffffaf220065f9d0 ffffffff86416f32 ffffaf220065fa20
0000000000000000
[   12.100348]  ffffaf220065fa10 ffffffff860835ab 000004e49276e000
ffff8a7992730000
[   12.100354]  0000000000000000 0000000000000000 0000000001000001
ffff8a799271fc08
[   12.100359] Call Trace:
[   12.100367]  [<ffffffff86416f32>] dump_stack+0x63/0x81
[   12.100372]  [<ffffffff860835ab>] __warn+0xcb/0xf0
[   12.100376]  [<ffffffff8608362f>] warn_slowpath_fmt+0x5f/0x80
[   12.100383]  [<ffffffff860c82d6>] ? finish_wait+0x56/0x70
[   12.100405]  [<ffffffffc02a1a2a>] drm_wait_one_vblank+0x1aa/0x1b0 [drm]
[   12.100408]  [<ffffffff860c86f0>] ? wake_atomic_t_function+0x60/0x60
[   12.100487]  [<ffffffffc040fb4b>] intel_get_load_detect_pipe+0x5fb/0x610
[i915]
[   12.100518]  [<ffffffffc044b0b5>] intel_tv_detect+0x155/0x550 [i915]
[   12.100525]  [<ffffffffc034315f>]
drm_helper_probe_single_connector_modes+0x3ff/0x4f0 [drm_kms_helper]
[   12.100537]  [<ffffffffc0351a8e>] drm_fb_helper_initial_config+0xae/0x430
[drm_kms_helper]
[   12.100565]  [<ffffffffc0424d88>] intel_fbdev_initial_config+0x18/0x30
[i915]
[   12.100566]  [<ffffffff860a7d37>] async_run_entry_fn+0x37/0x150
[   12.100568]  [<ffffffff8609e40c>] process_one_work+0x1fc/0x4b0
[   12.100569]  [<ffffffff8609e70b>] worker_thread+0x4b/0x500
[   12.100571]  [<ffffffff8609e6c0>] ? process_one_work+0x4b0/0x4b0
[   12.100573]  [<ffffffff860a4a69>] kthread+0xd9/0xf0
[   12.100575]  [<ffffffff860a4990>] ? kthread_park+0x60/0x60
[   12.100577]  [<ffffffff86890f35>] ret_from_fork+0x25/0x30
[   12.100579] ---[ end trace 6070e1592611415d ]---
[   12.245461] ------------[ cut here ]------------

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