[Bug 89878] [HSW] wakeup after STR causes drivers/gpu/drm/i915/intel_uncore.c:528 hsw_unclaimed_reg_debug.isra.11+0x78/0x90()

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=89878

--- Comment #4 from Thomas Kaergel <kaergel at b1-systems.de> ---
this time i tried 3.14.36-gerntoo... X11 screen is unusable drectly after
booting. Dmesg shows this trace:

[   18.506870] ------------[ cut here ]------------
[   18.506875] WARNING: CPU: 2 PID: 2482 at drivers/gpu/drm/i915/i915_drv.c:480
i915_semaphore_is_enabled+0x6f/0x80()
[   18.506876] Modules linked in: ipt_MASQUERADE iptable_nat nf_nat_ipv4 nf_nat
vboxnetadp(O) vboxnetflt(O) vboxdrv(O) x86_pkg_temp_thermal
[   18.506888] CPU: 2 PID: 2482 Comm: X Tainted: G        W  O 3.14.36-gentoo
#1
[   18.506889] Hardware name: LENOVO 20BX000TGE/20BX000TGE, BIOS JBET39WW (1.04
) 12/09/2014
[   18.506890]  0000000000000009
[   18.506891]  ffff880330cf3bc0
[   18.506891]  ffffffff81995a63
[   18.506892]  0000000000000000

[   18.506893]  ffff880330cf3bf8
[   18.506893]  ffffffff8108afc8
[   18.506894]  ffff88008c075b10
[   18.506894]  ffff88034be51000

[   18.506895]  ffff88008c074000
[   18.506896]  0000000000000250
[   18.506896]  ffff88034b437b00
[   18.506897]  ffff880330cf3c08

[   18.506903] Call Trace:
[   18.506909]  [<ffffffff81995a63>] dump_stack+0x45/0x56
[   18.506914]  [<ffffffff8108afc8>] warn_slowpath_common+0x78/0xa0
[   18.506919]  [<ffffffff8108b0a5>] warn_slowpath_null+0x15/0x20
[   18.506925]  [<ffffffff814ebb6f>] i915_semaphore_is_enabled+0x6f/0x80
[   18.506929]  [<ffffffff8154fdc0>] gen6_add_request+0x50/0x160
[   18.506933]  [<ffffffff814fc80d>] __i915_add_request+0x5d/0x240
[   18.506939]  [<ffffffff81506365>]
i915_gem_do_execbuffer.isra.21+0x995/0x1090
[   18.506944]  [<ffffffff811b14fa>] ? file_update_time+0x8a/0xd0
[   18.506950]  [<ffffffff81506f37>] i915_gem_execbuffer2+0x97/0x270
[   18.506965]  [<ffffffff814d0b22>] drm_ioctl+0x4c2/0x5f0
[   18.506971]  [<ffffffff810ae046>] ? __remove_hrtimer+0x46/0xa0
[   18.506977]  [<ffffffff811aa448>] do_vfs_ioctl+0x2c8/0x4a0
[   18.506983]  [<ffffffff811aa6a1>] SyS_ioctl+0x81/0xa0
[   18.506989]  [<ffffffff819a6682>] system_call_fastpath+0x16/0x1b
[   18.506992] ---[ end trace 4f4f6b03cb08791b ]---

Switching one minor up to 3.14.37-gentoo (~amd64) does not change much. X11
screnn still unusable after booting. Dmesg shows:

[  320.930151] ------------[ cut here ]------------
[  320.930171] WARNING: CPU: 0 PID: 2482 at drivers/gpu/drm/i915/i915_drv.c:480
i915_semaphore_is_enabled+0x6f/0x80()
[  320.930174] Modules linked in: ipt_MASQUERADE iptable_nat nf_nat_ipv4 nf_nat
vboxnetadp(O) vboxnetflt(O) vboxdrv(O) x86_pkg_temp_thermal
[  320.930194] CPU: 0 PID: 2482 Comm: X Tainted: G        W  O 3.14.37-gentoo
#1
[  320.930197] Hardware name: LENOVO 20BX000TGE/20BX000TGE, BIOS JBET39WW (1.04
) 12/09/2014
[  320.930201]  0000000000000009 ffff880085cb7bc0 ffffffff81995c33
0000000000000000
[  320.930207]  ffff880085cb7bf8 ffffffff8108afc8 ffff88008c055810
ffff88034c6cc800
[  320.930212]  ffff88008c054000 000000000001a028 ffff88034b5cb080
ffff880085cb7c08
[  320.930218] Call Trace:
[  320.930228]  [<ffffffff81995c33>] dump_stack+0x45/0x56
[  320.930238]  [<ffffffff8108afc8>] warn_slowpath_common+0x78/0xa0
[  320.930245]  [<ffffffff8108b0a5>] warn_slowpath_null+0x15/0x20
[  320.930252]  [<ffffffff814ebc4f>] i915_semaphore_is_enabled+0x6f/0x80
[  320.930259]  [<ffffffff8154fe74>] gen6_add_request+0x24/0x160
[  320.930265]  [<ffffffff814fc8ed>] __i915_add_request+0x5d/0x240
[  320.930274]  [<ffffffff81506445>]
i915_gem_do_execbuffer.isra.21+0x995/0x1090
[  320.930282]  [<ffffffff811ab090>] ? poll_select_copy_remaining+0x130/0x130
[  320.930289]  [<ffffffff81507017>] i915_gem_execbuffer2+0x97/0x270
[  320.930299]  [<ffffffff814d0c02>] drm_ioctl+0x4c2/0x5f0
[  320.930306]  [<ffffffff810ae106>] ? __remove_hrtimer+0x46/0xa0
[  320.930312]  [<ffffffff811aa508>] do_vfs_ioctl+0x2c8/0x4a0
[  320.930317]  [<ffffffff811aa761>] SyS_ioctl+0x81/0xa0
[  320.930324]  [<ffffffff819a6842>] system_call_fastpath+0x16/0x1b
[  320.930328] ---[ end trace 4117b446a9da6b20 ]---

So i'm back at 3.17.8-gentoo-r1 which works best so far, but still shows  trace
after wakeup from STR

Let me know if can provide more infos.

Best regards

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