[Intel-gfx] 4.3-rc5 triggering warning in i915 driver

Oliver Neukum oneukum at suse.com
Tue Oct 13 01:59:13 PDT 2015


Hi,

I got this warning, which 4.2 didn't show on boot:

[    6.882835] [drm:intel_pipe_config_compare [i915]] *ERROR* mismatch
in has_drrs (expected 1, found 0)
[    6.882836] ------------[ cut here ]------------
[    6.882854] WARNING: CPU: 0 PID: 6 at
drivers/gpu/drm/i915/intel_display.c:12691 intel_modeset_check_state
+0x4c7/0x8e0 [i915]()
[    6.882855] pipe state doesn't match!
[    6.882863] Modules linked in: crc32c_intel(E) ahci(E) libahci(E)
libata(E) i915(E) i2c_algo_bit(E) drm_kms_helper(E) syscopyarea(E)
sysfillrect(E) ehci_pci(E) sysimgblt(E) fb_sys_fops(E) ehci_hcd(E)
usbcore(E) drm(E) usb_common(E) wmi(E) video(E) button(E) sg(E)
scsi_mod(E) autofs4(E)
[    6.882865] CPU: 0 PID: 6 Comm: kworker/u16:0 Tainted: G            E
4.3.0-rc5-default+ #4
[    6.882865] Hardware name: Hewlett-Packard HP EliteBook 8780w/190A,
BIOS L70 Ver. 93.01 05/17/2013
[    6.882870] Workqueue: events_unbound async_run_entry_fn
[    6.882872]  ffffffffa02863f0 ffff880692cc3878 ffffffff812e3e26
ffff880692cc38c0
[    6.882872]  ffff880692cc38b0 ffffffff810647a6 ffff880691f37400
ffff88068de86000
[    6.882873]  ffff880692eeec00 0000000000000000 ffff88068e568a00
ffff880692cc3910
[    6.882874] Call Trace:
[    6.882878]  [<ffffffff812e3e26>] dump_stack+0x44/0x5e
[    6.882881]  [<ffffffff810647a6>] warn_slowpath_common+0x86/0xc0
[    6.882882]  [<ffffffff8106482c>] warn_slowpath_fmt+0x4c/0x50
[    6.882897]  [<ffffffffa021be47>] intel_modeset_check_state
+0x4c7/0x8e0 [i915]
[    6.882914]  [<ffffffffa0227538>] intel_atomic_commit+0x598/0x5f0
[i915]
[    6.882928]  [<ffffffffa0098067>] drm_atomic_commit+0x37/0x60 [drm]
[    6.882933]  [<ffffffffa018836e>] drm_atomic_helper_set_config
+0x38e/0x400 [drm_kms_helper]
[    6.882941]  [<ffffffffa0087cb4>] drm_mode_set_config_internal
+0x64/0x100 [drm]
[    6.882945]  [<ffffffffa018af3b>] restore_fbdev_mode+0xab/0x110
[drm_kms_helper]
[    6.882949]  [<ffffffffa018cce5>]
drm_fb_helper_restore_fbdev_mode_unlocked+0x25/0x70 [drm_kms_helper]
[    6.882952]  [<ffffffffa018cd5c>] drm_fb_helper_set_par+0x2c/0x50
[drm_kms_helper]
[    6.882972]  [<ffffffffa023b51a>] intel_fbdev_set_par+0x1a/0x60
[i915]
[    6.882974]  [<ffffffff8134f646>] fbcon_init+0x4c6/0x550
[    6.882976]  [<ffffffff813cb7fa>] visual_init+0xca/0x130
[    6.882977]  [<ffffffff813cddd6>] do_bind_con_driver+0x146/0x310
[    6.882979]  [<ffffffff813ce2c1>] do_take_over_console+0x141/0x1b0
[    6.882980]  [<ffffffff8134a847>] do_fbcon_takeover+0x57/0xb0
[    6.882981]  [<ffffffff8135004b>] fbcon_event_notify+0x60b/0x750
[    6.882983]  [<ffffffff81082db9>] notifier_call_chain+0x49/0x70
[    6.882984]  [<ffffffff810830dd>] __blocking_notifier_call_chain
+0x4d/0x70
[    6.882985]  [<ffffffff81083116>] blocking_notifier_call_chain
+0x16/0x20
[    6.882987]  [<ffffffff8135579b>] fb_notifier_call_chain+0x1b/0x20
[    6.882988]  [<ffffffff8135760e>] register_framebuffer+0x1de/0x300
[    6.882991]  [<ffffffffa018cfd7>] drm_fb_helper_initial_config
+0x257/0x3a0 [drm_kms_helper]
[    6.883008]  [<ffffffffa023c5fb>] intel_fbdev_initial_config
+0x1b/0x20 [i915]
[    6.883010]  [<ffffffff810848c8>] async_run_entry_fn+0x48/0x150
[    6.883012]  [<ffffffff8107c119>] process_one_work+0x149/0x3e0
[    6.883014]  [<ffffffff8107c94a>] worker_thread+0x11a/0x460
[    6.883015]  [<ffffffff8107c830>] ? max_active_store+0x60/0x60
[    6.883016]  [<ffffffff81081d69>] kthread+0xc9/0xe0
[    6.883017]  [<ffffffff81081ca0>] ? kthread_park+0x60/0x60
[    6.883019]  [<ffffffff815a705f>] ret_from_fork+0x3f/0x70
[    6.883020]  [<ffffffff81081ca0>] ? kthread_park+0x60/0x60
[    6.883021] ---[ end trace 2a13d8ac0ddd1cac ]---
[    6.886953] Console: switching to colour frame buffer device 200x56
[    6.889577] i915 0000:00:02.0: fb0: inteldrmfb frame buffer device


00:02.0 0300: 8086:0416 (rev 06) (prog-if 00 [VGA controller])
        Subsystem: 103c:190a
        Control: I/O+ Mem+ BusMaster+ SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B- DisINTx+
        Status: Cap+ 66MHz- UDF- FastB2B+ ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
        Latency: 0
        Interrupt: pin A routed to IRQ 31
        Region 0: Memory at cc400000 (64-bit, non-prefetchable)
[size=4M]
        Region 2: Memory at a0000000 (64-bit, prefetchable) [size=256M]
        Region 4: I/O ports at 6000 [size=64]
        Expansion ROM at <unassigned> [disabled]
        Capabilities: [90] MSI: Enable+ Count=1/1 Maskable- 64bit-
                Address: fee00018  Data: 0000
        Capabilities: [d0] Power Management version 2
                Flags: PMEClk- DSI+ D1- D2- AuxCurrent=0mA
PME(D0-,D1-,D2-,D3hot-,D3cold-)
                Status: D0 NoSoftRst- PME-Enable- DSel=0 DScale=0 PME-
        Capabilities: [a4] PCI Advanced Features
                AFCap: TP+ FLR+
                AFCtrl: FLR-
                AFStatus: TP-
        Kernel driver in use: i915
        Kernel modules: i915

01:00.0 0300: 10de:11b6 (rev a1) (prog-if 00 [VGA controller])
        Subsystem: 103c:190a
        Control: I/O- Mem- BusMaster- SpecCycle- MemWINV- VGASnoop-
ParErr- Stepping- SERR- FastB2B- DisINTx-
        Status: Cap+ 66MHz- UDF- FastB2B- ParErr- DEVSEL=fast >TAbort-
<TAbort- <MAbort- >SERR- <PERR- INTx-
        Interrupt: pin A routed to IRQ 10
        Region 0: Memory at cb000000 (32-bit, non-prefetchable)
[disabled] [size=16M]
        Region 1: Memory at 50000000 (64-bit, prefetchable) [disabled]
[size=256M]
        Region 3: Memory at 60000000 (64-bit, prefetchable) [disabled]
[size=32M]
        Region 5: I/O ports at 5000 [disabled] [size=128]
        Expansion ROM at cc080000 [disabled] [size=512K]
        Capabilities: [60] Power Management version 3
                Flags: PMEClk- DSI- D1- D2- AuxCurrent=0mA
PME(D0-,D1-,D2-,D3hot-,D3cold-)
                Status: D0 NoSoftRst+ PME-Enable- DSel=0 DScale=0 PME-
        Capabilities: [68] MSI: Enable- Count=1/1 Maskable- 64bit+
                Address: 0000000000000000  Data: 0000
        Capabilities: [78] Express (v2) Endpoint, MSI 00
                DevCap: MaxPayload 256 bytes, PhantFunc 0, Latency L0s
unlimited, L1 <64us
                        ExtTag+ AttnBtn- AttnInd- PwrInd- RBE+ FLReset-
                DevCtl: Report errors: Correctable- Non-Fatal- Fatal-
Unsupported-
                        RlxdOrd+ ExtTag+ PhantFunc- AuxPwr- NoSnoop+
                        MaxPayload 128 bytes, MaxReadReq 512 bytes
                DevSta: CorrErr- UncorrErr- FatalErr- UnsuppReq- AuxPwr-
TransPend-
                LnkCap: Port #0, Speed 8GT/s, Width x16, ASPM L0s L1,
Exit Latency L0s <512ns, L1 <4us
                        ClockPM+ Surprise- LLActRep- BwNot-
                LnkCtl: ASPM L0s L1 Enabled; RCB 64 bytes Disabled-
CommClk+
                        ExtSynch- ClockPM- AutWidDis- BWInt- AutBWInt-
                LnkSta: Speed 8GT/s, Width x16, TrErr- Train- SlotClk+
DLActive- BWMgmt- ABWMgmt-
                DevCap2: Completion Timeout: Range AB, TimeoutDis+,
LTR-, OBFF Not Supported
                DevCtl2: Completion Timeout: 50us to 50ms, TimeoutDis-,
LTR-, OBFF Disabled
                LnkCtl2: Target Link Speed: 8GT/s, EnterCompliance-
SpeedDis-
                         Transmit Margin: Normal Operating Range,
EnterModifiedCompliance- ComplianceSOS-
                         Compliance De-emphasis: -6dB
                LnkSta2: Current De-emphasis Level: -3.5dB,
EqualizationComplete+, EqualizationPhase1+
                         EqualizationPhase2+, EqualizationPhase3+,
LinkEqualizationRequest+
        Capabilities: [b4] Vendor Specific Information: Len=14 <?>
        Capabilities: [100 v1] Virtual Channel
                Caps:   LPEVC=0 RefClk=100ns PATEntryBits=1
                Arb:    Fixed- WRR32- WRR64- WRR128-
                Ctrl:   ArbSelect=Fixed
                Status: InProgress-
                VC0:    Caps:   PATOffset=00 MaxTimeSlots=1
RejSnoopTrans-
                        Arb:    Fixed- WRR32- WRR64- WRR128- TWRR128-
WRR256-
                        Ctrl:   Enable+ ID=0 ArbSelect=Fixed TC/VC=ff
                        Status: NegoPending- InProgress-
        Capabilities: [128 v1] Power Budgeting <?>
        Capabilities: [600 v1] Vendor Specific Information: ID=0001
Rev=1 Len=024 <?>
        Capabilities: [900 v1] #19
        Kernel modules: nouveau

The system has a dual GPU setup. X works despite the warning.
I am using the internal display and a docking station but no external
monitors.

	Regards
		Oliver

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