[Bug 100378] [EXT][KBL][SKL] IGT pm_rpm at system-suspend

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=100378

--- Comment #14 from Imre Deak <imre.deak at intel.com> ---
(In reply to Bas Zoetekouw from comment #13)
> I'm now seeing this issue on my Dell E7470 with kernel 4.15.0 (Ubuntu bionic
> 18.04).
> 
> Exact error (during boot):

It looks like system resume. Could you attach a dmesg log containing the error
booting with drm.debug=0xe ?

> 
> mrt 02 17:50:46 regan systemd-journald[508]: Missed 51852 kernel messages
> mrt 02 17:50:46 regan kernel: [drm:gen8_irq_handler [i915]] *ERROR* Fault
> errors on pipe A: 0x00000080
> mrt 02 17:50:46 regan kernel: [drm:gen8_irq_handler [i915]] *ERROR* Fault
> errors on pipe A: 0x00000880
> [...repeat a few hundred times...]
> mrt 02 17:50:47 regan kernel: [drm:gen8_irq_handler [i915]] *ERROR* Fault
> errors on pipe A: 0x00000080
> mrt 02 17:50:47 regan kernel: e1000e: EEE TX LPI TIMER: 00000011
> mrt 02 17:50:47 regan kernel: ------------[ cut here ]------------
> mrt 02 17:50:47 regan kernel: Unexpected DBuf power power state (0x0000000a)
> mrt 02 17:50:47 regan kernel: WARNING: CPU: 2 PID: 5110 at
> /build/linux-LuqUgo/linux-4.15.0/drivers/gpu/drm/i915/intel_r
> mrt 02 17:50:47 regan kernel: Modules linked in: ccm rfcomm bridge stp llc
> devlink ebtable_filter ebtables ip6table_filt
> mrt 02 17:50:47 regan kernel:  dell_smbios_wmi btusb snd btrtl dell_wmi
> btbcm sparse_keymap btintel dell_smbios serio_ra
> mrt 02 17:50:47 regan kernel:  drm_kms_helper syscopyarea aesni_intel
> sysfillrect sysimgblt e1000e fb_sys_fops aes_x86_6
> mrt 02 17:50:47 regan kernel: CPU: 2 PID: 5110 Comm: kworker/u8:7 Tainted: G
> U  W        4.15.0-10-generic #11-Ubunt
> mrt 02 17:50:47 regan kernel: Hardware name: Dell Inc. Latitude
> E7470/0T6HHJ, BIOS 1.18.5 12/11/2017
> mrt 02 17:50:47 regan kernel: Workqueue: events_unbound async_run_entry_fn
> mrt 02 17:50:47 regan kernel: RIP:
> 0010:gen9_dc_off_power_well_enable+0x201/0x240 [i915]
> mrt 02 17:50:47 regan kernel: RSP: 0000:ffffbd1f0450fc68 EFLAGS: 00010282
> mrt 02 17:50:47 regan kernel: RAX: 0000000000000000 RBX: ffff9f17b1668000
> RCX: ffffffffb0e62708
> mrt 02 17:50:47 regan kernel: RDX: ffffffffb0e62708 RSI: 0000000000000096
> RDI: 0000000000000202
> mrt 02 17:50:47 regan kernel: RBP: ffffbd1f0450fc88 R08: 0000000000000000
> R09: 000000000000002e
> mrt 02 17:50:47 regan kernel: R10: ffffbd1f0450fe38 R11: 000000000000d95f
> R12: ffff9f17b1668000
> mrt 02 17:50:47 regan kernel: R13: 0000000400000000 R14: aaaaaaaaaaaaaaab
> R15: 0000000000000022
> mrt 02 17:50:47 regan kernel: FS:  0000000000000000(0000)
> GS:ffff9f17cfd00000(0000) knlGS:0000000000000000
> mrt 02 17:50:47 regan kernel: CS:  0010 DS: 0000 ES: 0000 CR0:
> 0000000080050033
> mrt 02 17:50:47 regan kernel: CR2: 0000000000000000 CR3: 00000001c620a001
> CR4: 00000000003606e0
> mrt 02 17:50:47 regan kernel: DR0: 0000000000000000 DR1: 0000000000000000
> DR2: 0000000000000000
> mrt 02 17:50:47 regan kernel: DR3: 0000000000000000 DR6: 00000000fffe0ff0
> DR7: 0000000000000400
> mrt 02 17:50:47 regan kernel: Call Trace:
> mrt 02 17:50:47 regan kernel:  intel_power_well_enable+0x40/0x50 [i915]
> mrt 02 17:50:47 regan kernel:  __intel_display_power_get_domain+0x82/0xa0
> [i915]
> mrt 02 17:50:47 regan kernel:  intel_display_power_get+0x33/0x50 [i915]
> mrt 02 17:50:47 regan kernel: 
> intel_display_set_init_power.part.14+0x21/0x40 [i915]
> mrt 02 17:50:47 regan kernel:  intel_display_set_init_power+0x1b/0x20 [i915]
> mrt 02 17:50:47 regan kernel: [drm:gen8_irq_handler [i915]] *ERROR* Fault
> errors on pipe A: 0x00000080
> mrt 02 17:50:47 regan kernel:  i915_drm_suspend+0x4f/0x170 [i915]
> mrt 02 17:50:47 regan kernel: [drm:gen8_irq_handler [i915]] *ERROR* Fault
> errors on pipe A: 0x00000080
> mrt 02 17:50:47 regan kernel:  i915_pm_suspend+0x28/0x40 [i915]
> mrt 02 17:50:47 regan kernel: [drm:gen8_irq_handler [i915]] *ERROR* Fault
> errors on pipe A: 0x00000080
> mrt 02 17:50:47 regan kernel:  pci_pm_suspend+0x8c/0x150
> mrt 02 17:50:47 regan kernel:  dpm_run_callback+0x5a/0x150
> mrt 02 17:50:47 regan kernel:  ? pci_pm_resume+0xb0/0xb0
> mrt 02 17:50:47 regan kernel:  __device_suspend+0x11f/0x450
> mrt 02 17:50:47 regan kernel:  async_suspend+0x1f/0xa0
> mrt 02 17:50:47 regan kernel:  async_run_entry_fn+0x3c/0x150
> mrt 02 17:50:47 regan kernel:  process_one_work+0x1ef/0x410
> mrt 02 17:50:47 regan kernel:  worker_thread+0x32/0x410
> mrt 02 17:50:47 regan kernel:  kthread+0x121/0x140
> mrt 02 17:50:47 regan kernel:  ? process_one_work+0x410/0x410
> mrt 02 17:50:47 regan kernel:  ? kthread_create_worker_on_cpu+0x70/0x70
> mrt 02 17:50:47 regan kernel:  ? do_syscall_64+0x76/0x130
> mrt 02 17:50:47 regan kernel:  ? SyS_exit_group+0x14/0x20
> mrt 02 17:50:47 regan kernel:  ret_from_fork+0x35/0x40
> mrt 02 17:50:47 regan kernel: Code: fe ff ff 48 c7 c6 20 0b 65 c0 48 c7 c7
> 66 20 64 c0 e8 74 a3 53 ef 0f ff e9 6e fe ff 
> mrt 02 17:50:47 regan kernel: ---[ end trace 8b40df64d7086aad ]---
> mrt 02 17:50:47 regan kernel: [drm:gen8_irq_handler [i915]] *ERROR* Fault
> errors on pipe A: 0x00000080
> mrt 02 17:50:47 regan kernel: [drm:gen8_irq_handler [i915]] *ERROR* Fault
> errors on pipe A: 0x00000080
> mrt 02 17:50:47 regan kernel: [drm:gen8_irq_handler [i915]] *ERROR* Fault
> errors on pipe A: 0x00000080
> mrt 02 17:50:47 regan kernel: [drm:gen8_irq_handler [i915]] *ERROR* Fault
> errors on pipe A: 0x00000080
> 
> 
> After this, the system boots fine, but DRI seems disabled.  E.g., Xorg says:
> 
> [    27.868] (II) Module glamoregl: vendor="X.Org Foundation"
> [    27.868]    compiled for 1.19.6, module version = 1.0.0
> [    27.868]    ABI class: X.Org ANSI C Emulation, version 0.4
> [    27.868] (II) glamor: OpenGL accelerated X.org driver based.
> [    27.915] (EE) modeset(0): eglGetDisplay() failed
> [    27.916] (EE) modeset(0): glamor initialization failed
> [...]
> [    28.030] (II) AIGLX: Screen 0 is not DRI2 capable
> [    28.030] (EE) AIGLX: reverting to software rendering

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