[Bug 92171] [i915gm] vblank not available on crtc

[bugzilla-daemon at bugzilla.kernel.org]

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

--- Comment #24 from Christian Hartmann <cornogle at googlemail.com> ---
tested on lenovo yoga 851f

still present in 
* 3.19.8
* 4.0.2 and
* 4.1.0-rc3 (torvalds/master)

[    0.000000] Kernel command line: BOOT_IMAGE=/vmlinuz-3.19.8.6
root=UUID=6c3bcf92-5a26-4dde-95e3-78ceb9aaa35b ro i915.modeset=1 rhgb quiet
i915.forc
e_backlight_pmic=1 audit=1 enforcing=1 selinux=1 LANG=de_DE.UTF-8


[    1.208478] [drm] Initialized drm 1.1.0 20060810
[    1.210290] [drm] Memory usable by graphics device = 2048M
[    1.210300] checking generic (80000000 8ca000) vs hw (80000000 10000000)
[    1.210305] fb: switching to inteldrmfb from simple
[    1.210353] Console: switching to colour dummy device 80x25
[    1.210520] [drm] Replacing VGA console driver
[    1.212259] [drm] Supports vblank timestamp caching Rev 2 (21.10.2013).
[    1.212265] [drm] Driver supports precise vblank timestamp query.
[    1.212294] [drm:intel_parse_bios] *ERROR* Unknown element
[    1.212306] [drm:intel_parse_bios] *ERROR* Sequence elements going beyond
block itself. Sequence block parsing failed
[    1.243185] vgaarb: device changed decodes:
PCI:0000:00:02.0,olddecodes=io+mem,decodes=io+mem:owns=io+mem
[    1.269996] ACPI: Video Device [GFX0] (multi-head: yes  rom: no  post: no)
[    1.271416] acpi device:21: registered as cooling_device4
[    1.271615] input: Video Bus as
/devices/LNXSYSTM:00/LNXSYBUS:00/PNP0A08:00/LNXVIDEO:00/input/input1
[    1.271688] [drm] Initialized i915 1.6.0 20141121 for 0000:00:02.0 on minor
0

...
[    1.333124] [drm] GMBUS [i915 gmbus dpb] timed out, falling back to bit
banging on pin 5
[    1.346402] fbcon: inteldrmfb (fb0) is primary device

...
[    2.462517] Console: switching to colour frame buffer device 150x120
[    2.511414] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device
[    2.511417] i915 0000:00:02.0: registered panic notifier
...

[    3.666539] usb 1-1.2.3: SerialNumber: 00000000000001
[    3.714416] ------------[ cut here ]------------
[    3.714434] WARNING: CPU: 3 PID: 265 at drivers/gpu/drm/drm_irq.c:1130
drm_wait_one_vblank+0x177/0x180()
[    3.714437] vblank wait timed out on crtc 0
[    3.714440] Modules linked in: usbnet mii
[    3.714452] CPU: 3 PID: 265 Comm: plymouthd Not tainted 3.19.8.6 #123
[    3.714455] Hardware name: LENOVO 60072/INVALID, BIOS 02WT18WW 08/01/2014
[    3.714459]  c0e11947 957b1170 00000000 f689dc98 c0afb870 f689dcd8 f689dcc8
c0449ad7
[    3.714469]  c0d78220 f689dcf8 00000109 c0d4b618 0000046a c07bffa7 c07bffa7
00000000
[    3.714479]  f400c800 00000000 f689dce4 c0449b4e 00000009 f689dcd8 c0d78220
f689dcf8
[    3.714490] Call Trace:
[    3.714502]  [<c0afb870>] dump_stack+0x41/0x52
[    3.714510]  [<c0449ad7>] warn_slowpath_common+0x87/0xc0
[    3.714516]  [<c07bffa7>] ? drm_wait_one_vblank+0x177/0x180
[    3.714521]  [<c07bffa7>] ? drm_wait_one_vblank+0x177/0x180
[    3.714527]  [<c0449b4e>] warn_slowpath_fmt+0x3e/0x60
[    3.714533]  [<c07bffa7>] drm_wait_one_vblank+0x177/0x180
[    3.714541]  [<c0841772>] ? intel_psr_flush+0x72/0xd0
[    3.714547]  [<c04804f0>] ? prepare_to_wait_event+0xc0/0xc0
[    3.714553]  [<c08313a0>] intel_pipe_set_base+0x120/0x1f0
[    3.714559]  [<c083b9ec>] intel_crtc_set_config+0x9bc/0xd80
[    3.714566]  [<c07c7cbe>] drm_mode_set_config_internal+0x4e/0xc0
[    3.714572]  [<c07cb636>] drm_mode_setcrtc+0xc6/0x560
[    3.714578]  [<c07cb570>] ? drm_mode_setplane+0x230/0x230
[    3.714583]  [<c07be55f>] drm_ioctl+0x1cf/0x520
[    3.714590]  [<c055f705>] ? kmem_cache_alloc_trace+0x175/0x1e0
[    3.714597]  [<c0521952>] ? free_hot_cold_page_list+0x42/0x90
[    3.714602]  [<c07cb570>] ? drm_mode_setplane+0x230/0x230
[    3.714609]  [<c06864a2>] ? bio_clone_bioset+0x82/0x2b0
[    3.714615]  [<c07be390>] ? drm_getmap+0xc0/0xc0
[    3.714621]  [<c0580b9a>] do_vfs_ioctl+0x30a/0x510
[    3.714628]  [<c0652582>] ? inode_has_perm.isra.32+0x32/0x40
[    3.714633]  [<c06526d7>] ? file_has_perm+0x97/0xa0
[    3.714639]  [<c065342c>] ? selinux_file_ioctl+0x4c/0xf0
[    3.714645]  [<c0580e00>] SyS_ioctl+0x60/0x90
[    3.714650]  [<c06864a2>] ? bio_clone_bioset+0x82/0x2b0
[    3.714655]  [<c06864a2>] ? bio_clone_bioset+0x82/0x2b0
[    3.714662]  [<c0b044cf>] sysenter_do_call+0x12/0x12
[    3.714667]  [<c06864a2>] ? bio_clone_bioset+0x82/0x2b0
[    3.714672]  [<c06864a2>] ? bio_clone_bioset+0x82/0x2b0
[    3.714678]  [<c0b00000>] ? __schedule+0x620/0x730
[    3.714682] ---[ end trace 4d2ee9409150afdc ]---

need more debugs? please ask I provide more logs and infos if needed..

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