[Bug 92171] New: vblank not available on crtc

[bugzilla-daemon at bugzilla.kernel.org]

https://bugzilla.kernel.org/show_bug.cgi?id=92171

            Bug ID: 92171
           Summary: vblank not available on crtc
           Product: Drivers
           Version: 2.5
    Kernel Version: 3.19
          Hardware: All
                OS: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Video(DRI - Intel)
          Assignee: intel-gfx-bugs at lists.freedesktop.org
          Reporter: t.osiara+kernel at gmail.com
                CC: intel-gfx-bugs at lists.freedesktop.org
        Regression: No

Compiled 3.19 and started seeing this exception in dmesg (lots of them):

[    3.788611] ------------[ cut here ]------------
[    3.788652] WARNING: CPU: 0 PID: 39 at drivers/gpu/drm/drm_irq.c:1121
drm_wait_one_vblank+0x127/0x160 [drm]()
[    3.788655] vblank not available on crtc 0, ret=-22
[    3.788658] Modules linked in: ata_piix ahci libahci uhci_hcd libata i915
ehci_hcd usbcore usb_common drm_kms_helper rtc_cmos drm i2c_algo_b
it video thermal i2c_core processor button thermal_sys hwmon scsi_dh_alua
scsi_dh_emc scsi_dh_hp_sw scsi_dh_rdac scsi_dh
[    3.788687] CPU: 0 PID: 39 Comm: kworker/u4:1 Not tainted
3.19.0-rc6-1.40-default+ #1
[    3.788690] Hardware name: QCI             00000000000000000              
/EF6                             , BIOS Q3B81 10/11/2005
[    3.788699] Workqueue: events_unbound async_run_entry_fn
[    3.788702]  00000000 00000000 c144bacc c071c711 00000000 c144bafc c0246609
f81ec02c
[    3.788709]  c144bb28 00000027 f81ea8cd 00000461 f81c7c47 f81c7c47 f408d400
f408d5fc
[    3.788717]  00000000 c144bb14 c02466be 00000009 c144bb0c f81ec02c c144bb28
c144bb58
[    3.788724] Call Trace:
[    3.788735]  [<c071c711>] dump_stack+0x41/0x52
[    3.788740]  [<c0246609>] warn_slowpath_common+0x89/0xc0
[    3.788762]  [<f81c7c47>] ? drm_wait_one_vblank+0x127/0x160 [drm]
[    3.788781]  [<f81c7c47>] ? drm_wait_one_vblank+0x127/0x160 [drm]
[    3.788786]  [<c02466be>] warn_slowpath_fmt+0x2e/0x30
[    3.788806]  [<f81c7c47>] drm_wait_one_vblank+0x127/0x160 [drm]
[    3.788888]  [<f93f27a1>] intel_enable_tv+0x21/0x60 [i915]
[    3.788946]  [<f93c2f35>] i9xx_crtc_enable+0x365/0x420 [i915]
[    3.789006]  [<f93c1905>] __intel_set_mode+0x855/0xa40 [i915]
[    3.789032]  [<f81cfc89>] ? drm_mode_object_get+0x59/0x80 [drm]
[    3.789091]  [<f93c6a9b>] intel_set_mode+0x6b/0x90 [i915]
[    3.789150]  [<f93c6dbc>] intel_get_load_detect_pipe+0x1fc/0x490 [i915]
[    3.789215]  [<f93f30d6>] intel_tv_detect+0xe6/0x5a0 [i915]
[    3.789273]  [<f93b898c>] ? intel_user_framebuffer_destroy+0x4c/0x80 [i915]
[    3.789330]  [<f93b898c>] ? intel_user_framebuffer_destroy+0x4c/0x80 [i915]
[    3.789355]  [<f81ce001>] ? drm_framebuffer_free+0x41/0x60 [drm]
[    3.789370]  [<f8134688>]
drm_helper_probe_single_connector_modes_merge_bits+0x2c8/0x3c0 [drm_kms_helper]
[    3.789381]  [<f81347b2>] drm_helper_probe_single_connector_modes+0x12/0x20
[drm_kms_helper]
[    3.789393]  [<f813ca39>]
drm_fb_helper_probe_connector_modes.isra.3+0x39/0x60 [drm_kms_helper]
[    3.789406]  [<f813dc58>] drm_fb_helper_initial_config+0x38/0x360
[drm_kms_helper]
[    3.789411]  [<c0265171>] ? dequeue_task+0x91/0xa0
[    3.789417]  [<c071ef5b>] ? __schedule+0x41b/0x750
[    3.789476]  [<f93d3494>] intel_fbdev_initial_config+0x14/0x20 [i915]
[    3.789481]  [<c025fafa>] async_run_entry_fn+0x4a/0x170
[    3.789487]  [<c02590ec>] ? pwq_dec_nr_in_flight+0x3c/0x90
[    3.789492]  [<c0259252>] process_one_work+0x112/0x340
[    3.789497]  [<c025959d>] worker_thread+0xed/0x3a0
[    3.789502]  [<c0279d0a>] ? __wake_up_locked+0x1a/0x20
[    3.789507]  [<c02594b0>] ? process_scheduled_works+0x30/0x30
[    3.789512]  [<c025dbb6>] kthread+0x96/0xb0
[    3.789518]  [<c07222c1>] ret_from_kernel_thread+0x21/0x30
[    3.789522]  [<c025db20>] ? kthread_worker_fn+0x110/0x110
[    3.789525] ---[ end trace 89788b5610c976c6 ]---

-- 
You are receiving this mail because:
You are on the CC list for the bug.
You are the assignee for the bug.